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RabbitCore RCM4300 User`s Manual

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1. Header Description Pins Connected aun 1 2 LN2 RCM4300 JP6 LN2 or PD2 on J4 pin 42 2 3 PD2 RCM4310 1 2 LN3 RCM4300 JP7 LN3 or PD3 on J4 pin 43 2 3 PD3 RCM4310 1 2 LN4 RCM4300 JP8 LN4 or PD4 on J4 pin 44 2 3 PD4 RCM4310 1 2 LN6 RCM4300 JP9 LN6 or PD6 on J4 pin 46 2 3 PD6 RCM4310 1 2 LNS5 RCM4300 JP10 LN5 or PDS on J4 pin 45 2 3 PD5 RCM4310 1 2 LN7 RCM4300 JP11 LN7 or PD7 on J4 pin 47 2 3 PD7 RCM4310 jp 2 PC4 TxB or PC2_TxC to A D bee Cees RCM4300 converter SDI 2 3 PC2 TxC jpi3 POS_RxB or PC3_RxC to A D Ie Fes RCM4300 converter BUSY 2 3 PC3 RxC PBO or PD2 to A D converter 1 2 PBO RCM4300 JP14 LK SC 2 3 PD2 1 2 FDX COL displayed by LED DS2 x JP15 LED DS2 Display 7 optional ACT displayed by LED aoe DS2 NOTE The jumper connections are made using 0 2 surface mounted resistors RabbitCore RCM4300 User s Manual 99 A 6 Conformal Coating The areas around the 32 kHz real time clock crystal oscillator have had the Dow Corning silicone based 1 2620 conformal coating applied The conformally coated area is shown in Figure A 6 The conformal coating protects these high impedance circuits from the effects of moisture and contaminants over time Conformally coated area Figure A 6 RCM4300 Areas Receiving Conformal Coa
2. 116 JP16 PB4 Switch S2 116 JP17 LN3 buffer filter to RCM4300 116 MAC addresses 79 microSD Card adapter moies iiien 46 formatting 53 software SDFLASH LIB 53 use in mass storage applica TOM 4 oi do teg 53 use with SD Card reader 46 real time clock battery backup 119 Run Mode 39 switching modes 39 S sample programs 19 A D converter AD CAL ALL C 24 112 AD CAL CHAN 24 JP18 PB5 Switch S2 116 P A coetus ALL C 24 JP19 LN4 buffer filter to 1 1 2 E RCM4300 116 pinout AD SAMPLEC 24 JP2 3 3 V current mea Ethernet port 37 THERMISTOR C 25 112 surement 115 Prototyping Board 107 AJD convertercalibration JP20 LNS buffer filter to RCM49005 aos 29 DNLOADCALIB C 25 RCM4300 116 alternate configurations 31 UPLOADCALIB C 25 JP21 LN6 buffer filterto power supplies FAT file system 27 RCM4300 oss 116 48 3 V ati 118 getting to know the RCM4300 JP22 LN7 buffer filter to battery backup 118 CONTROLLED C 19 RCM4300 116 Program Mode 39 FLASHLEDI C 19 JP23 analog inputs LN4 switching modes 39 FLASHLED2 C
3. TXA PC6 PC7 PD6 TXE PD6 PE6 PC6 Serial Port A RXA PC7 PD7 PE7 RXE PD7 PE7 PC7 Serial Port E SCLKA PB1 RCLKE PD5 PES PC5 TXB PC4 PC5 PDA TCLKE PD4 PE4 PC4 Serial Port B RXB PC5 PD5 PES TXF PD2 PE2 PC2 SCLKB PBO RXF PD3 PE3 PC3 Serial Port F TXC PC2 PC3 RCLKF PD1 PEI PCI Serial Port C RXC PC3 PD3 PE3 TCLKF PDO PEO PCO SCLKC PD2 PE2 PE7 PC7 TXD PCO PCI RCLKE and RCLKF must be selected to be on the Serial Port D RXD PCI PD1 PE1 same parallel port as TXE and TXF respectively SCLKD PDO PEO PE3 PC3 4 2 2 Ethernet Port Figure 8 shows the pinout for the RJ 45 Ethernet port J2 Note that some Ethernet con nectors are numbered in reverse to the order used here RJ 45 Plug ETHERNET Figure 8 RJ 45 Ethernet Port Pinout Three LEDs are placed next to the RJ 45 Ethernet jack one to indicate Ethernet link activity LINK ACT one to indicate when the RCM4300 is connected to a functioning 100Base T network SPEED and one FDX COL to indicate that the current connection is in full duplex mode steady on or that a half duplex connection is experiencing collisions blinks The RJ 45 connector is shielded to minimize EMI effects to from the Ethernet signals RabbitCore RCM4300 User s Manual 37 4 2 3 Programming Port The RCM4300 is programmed via the 10 pin header labeled J1 The programming port uses the Rabbit 4000 s Serial Port A for communication Dynamic C uses the
4. Tpuzv Tpvuzi Figure A 4 I O Read and Write Cycles No Extra Wait States NOTE IOCSx can be programmed to be active low default or active high RabbitCore RCM4300 User s Manual 96 Table A 7 lists the delays in gross memory access time for several values of VDDjo Table A 7 Preliminary Data and Clock Delays Clock to Address Worst Case us Output Delay Data Setup Spectrum Spreader Delay in ns Time Delay ns W moo GE 30 pF 60 pF 90 pF 0 5 ns setting 1 ns setting 2 ns setting no dbl dbl no dbl dbl no dbl dbl 3 3 6 8 11 1 2 3 2 3 3 4 5 4 5 9 1 8 18 24 33 3 716 5 8 12 11 22 The measurements are taken at the 50 points under the following conditions e T 40 C to 85 C V VDDyo 10 e Internal clock to nonloaded CLK pin delay lt 1 ns 85 C 3 0 V The clock to address output delays are similar and apply to the following delays e Tap the clock to address delay Tos the clock to memory chip select delay e Trocsx gt the clock to I O chip select delay e Tiorp the clock to I O read strobe delay e Tiowr the clock to I O write strobe delay e TRurEN the clock to I O buffer enable delay The data setup time delays are similar for both Tyetyp and Thord When the spectrum spreader is enabled with the clock doubler every other clock cycle is shortened sometimes lengthened by a maximum amount given in the table above The shortening t
5. 10 11 16 47 hardware connections add on modules 11 73 install RCM4300 on Prototyp B installation 11 ing Board 13 battery backed SRAM 52 power supply 15 battery backup compiler options 16 47 programming cable 14 battery life 119 FAT file system 53 CICUIL cesesscsseentei irt eters 119 libraries l xternal batter nnections 5 A 1 mde ES EDEVSELASECEIB I O buffer sourcing and sinking real time clock 119 PACKETLIB 49 limits 95 reset generator 120 RCM43xx LIB 1 54 IP addresses emm 78 use of battery backed SRAM ESB esas 49 nee 52 DFLASHLLIB board initialization md e ndash o BONO SELES TE SHOERSO ccn function calls 54 sample programs 19 J brdImt tics 54 standard features bus loading 95 debugging 48 jumper configurations C telephone based technical sup Prototyping Board 115 DUI aeo DeR S 10 73 JP1 5 V current measure clock doubler 44 upgrades and patches 73 ment sse 115 RabbitCore RCM4300 User s Manual 122 JP1 LNO buffer filter to RCM4300 116 JP12 PB2 LED DS2 116 JP13 LN1 buffer filter to RCM4300 116 JP14 PB3 LED DS3 116 JP15 LN2 buffer filter to RCM4300
6. RabbitCore RCM4300 C Programmable Analog Core Module with microSD Card Storage and Ethernet User s Manual 019 0163 J RabbitCore RCM4300 User s Manual Part Number 019 0163 J Printed in U S A 2007 2010 Digi International Inc All rights reserved Digi International reserves the right to make changes and improvements to its products without providing notice Trademarks Rabbit RabbitCore and Dynamic C are registered trademarks of Digi International Inc Rabbit 4000 is are trademark of Digi International Inc SD is a trademark of the SD Card Association The latest revision of this manual is available on the Rabbit Web site www rabbit com for free unregistered download Digi International Inc www rabbit com TABLE OF CONTENTS Chapter 1 Introduction 6 LI REMA4300 FEAtUTES suscrita cesta de ii 7 1 2 Advantages of the RCEM4300 eee eere eh HER asain ala ESEE OEN ERE EUER ERES 8 1 3 Development and Evaluation Tools eese enne enne nnne nnn en nere eterne tentes 9 1 3 1 RCM4300 Development Kit cr etri hern nre ee eren eee eee ec cobre pe eere ern 9 BEI 10 1 3 3 Online Documentation ia 10 Chapter 2 Getting Started 11 2 1 Install Dynamic A 11 2 2 y EA A AAA n aen ree a eer E eae Ee EAEE ENEE E EE EEEE EEEE aE 12 2 2 1 Step 1 Prepare the Prototyping Board for Development sse 12 2 2 2 Step 2
7. Attach Module to Prototyping BoaldA cocccnocinocinoccconncooncnoncconncconcconnncnnccnnc non nennen 13 2 2 3 Step 3 Connect Programming Cable esee nennen nennen 14 2 244 Step 4 Connect POWert O nii 15 2 3 RUN a sanmple Program eene rtr rete eE EEEREN EEEE EEEO E Veg CR Ee eee ee ERE EE ERE er pa EE 16 2 3 1 Nee ror tiara 16 24 Where Do LGo From Here 5 eret eene eere te erronee eara eere taie e sep tone Eos e bep ces Ere e Eie oiire 17 2 4 T Technical Support 2 e en etre rtt tese tot Pert p eoe be alo ESEE ETE EE EE 17 Chapter 3 Running Sample Programs 18 3 1 UC n 18 3 2 Sample Programs EET 19 23 2 s T amper DelecL OD esee ts exnescec teetes eate sie tits eter tud A E EE EE e 20 3 2 2 Use of mcroSD M Cards iis eere Uti access choca re ter item tat eer ete edet en 20 3 2 3 Serial Communication ecrire rises te teda eene ches eee tpe te coepere sacos te sies EEE ERE 21 3 2 4 A D Converter Inputs RCM4300 only esses nennen neret enhn nnren tenen 24 3 2 4 1 Downloading and Uploading Calibration Constants essere 25 3 4 5 REA Time CLOCK iere teh e Fere E Ple Piet dee tenerte lee ESE e E E crues 27 3 2 6 TCP IP Sample Programs eter nt esr ives tnrba ei ete tne teet Hp do e EEEE Lente ise enia enia E 27 3 2 7 FAT File System Sample Programs essere nennen nennen nennen eren 27 Chapter 4 Hardware Reference 28 4 1
8. The sample programs in the Dynamic C SAMPLES RCM4300 folder provide further examples 5 2 2 Serial Communication Drivers Library files included with Dynamic C provide a full range of serial communications sup port The RS232 LIB library provides a set of circular buffer based serial functions The PACKET LIB library provides packet based serial functions where packets can be delimited by the 9th bit by transmission gaps or with user defined special characters Both libraries provide blocking functions which do not return until they are finished transmitting or receiving and nonblocking functions which must be called repeatedly until they are fin ished allowing other functions to be performed between calls For more information see the Dynamic C Function Reference Manual and Rabbit Semiconductor s Technical Note TN213 Rabbit Serial Port Software RabbitCore RCM4300 User s Manual 49 5 2 3 Serial Flash Memory Use The RCM4300 module has a serial flash memory that contains the user block and stores the application program Two function calls are provided to work with the serial boot flash These function calls are in the Dynamic C LIB Rabbit4000 BIOSLIB BOOTDEV SFLASH LIB library sbfRead sbfRead void dest unsigned long offset unsigned nbytes DESCRIPTION Reads up to 64K from anywhere on the serial boot flash This function call supports both the blocking mode for use with nC OS II and a mutex for preemptive m
9. 19 LN6 configuration 117 programming cable TOGGLESWITCH C 20 JP24 analog inputs LNO PROG connector 39 how to run TCP IP sample ENS Comme UHR s DET RCM4300 connections 14 programs 82 83 JP3 JP4 PCO TxD LED programming port 38 how to set IP address 83 D S2 sss 115 Prototyping Board 102 microSD Card JP5 JP6 PCI RxD Switch access to RCM4300 analog in SDFLASH INSPECT 20 BO tegis i qui nlg puis suecia 103 lt PONG C aan tato 16 JP7 JP8 PC2 TxC LED adding components 109 real time clock DS pss 116 dimensions 105 RTC TEST C 27 JP9 JP10 PC3 RxC expansion area 103 SETRTCKB C Mauer 27 Switch S3 wees 116 features eco outs 102 103 senal communication RCM4300 sss 98 jumper configurations 115 FLOWCONTROL C 21 JP1 PE6 or SMODE out jumper locations 115 IOCONFIG SWIT put on J 98 mounting RCM4300 13 CHECH Oc A MR 23 JPIO LNSorPD5onJA pinout css 107 BARI EO EI m 99 power supply 106 SERDMAC a 21 JP11 LN7 or PD7 on J4 prototyping area 108 SIMPLE3WIRE C 22 99 specifications 106 SIMPLESWIRE C 22 JP2 PE5 or SMODEO out use of Rabbit 4000 signals SWITCHCHAR 22 put on J 98 108 TCP IP TES EET Ob STATUS QUE BROWS
10. NOTE Instead of defining this macro is your application you may simply add the line CL FORCE MASTER MODE 1 underthe Dynamic C Options Project Options Defines tab then click OK When you recompile your program this will have the same effect as setting the macro to 1 within the CLONECONF IG LIB library See Rabbit Semiconductor s Technical Note TN207 Rabbit Cloning Board for addi tional information on Rabbit Semiconductor s cloning board and how cloning is done 5 2 7 microSD Card Drivers The Dynamic C LIB Rabbit 4000 SDflash SDFLASH LIB library is used to interface to microSD Card memory devices on an SPI bus More information on these function calls is available in the Dynamic C Function Reference Manual The microSD Card is ideally suited to store files with a directory structure The Dynamic C FAT file system module provides support for a file system and for formatting the microSD Card for use in a Rabbit based system This allows files to be read and written in a PC compatible manner Visit our Web site at www rabbit com or contact your Rabbit Semiconductor sales representative or authorized distributor for further information on the Dynamic C FAT File System and other Dynamic C modules The supporting documenta tion for the Dynamic C FAT File System and the sample programs in the SAMPLES FileSystem FAT folder illustrate the use of the Dynamic C FAT file system RabbitCore RCM4300 User s Manual 53 5 2
11. 3 2 5 Real Time Clock If you plan to use the real time clock functionality in your application you will need to set the real time clock Set the real time clock using the SETRTCKB C sample program from the Dynamic C SAMPLES RTCLOCK folder using the onscreen prompts The RTC TEST C sample program in the Dynamic C SAMPLES RTCLOCK folder provides additional examples of how to read and set the real time clock 3 2 6 TCP IP Sample Programs Section 6 4 describes the TCP IP sample programs available for the RCM4300 and how to run them 3 2 7 FAT File System Sample Programs The Dynamic C SAMPLES FileSystem FAT folder provides sample programs to illus trate the use of the Dynamic C implementation of the FAT file system The FAT File Sys tem document on the Dynamic C CD describes the FAT file system in detail describes the function calls and discusses how to run the sample programs RabbitCore RCM4300 User s Manual 27 4 HARDWARE REFERENCE Chapter 4 describes the hardware components and principal hardware subsystems of the RCM4300 Appendix A RCM4300 Specifica tions provides complete physical and electrical specifications Figure 5 shows the Rabbit based subsystems designed into the RCM4300 58 98 MHz osc Customer specific applications Fast SRAM program RABBIT CMOS level signals 4000 Level converter RS 232 RS 485 microSD A D Converter Card serial communication RabbitCore Module
12. define CINBUFSIZE 15 set size of circular buffers in bytes define COUTBUFSIZE 15 define DINBUFSIZE 15 define DOUTBUFSIZE 15 define MYBAUD 115200 set baud rate endif main serCopen _MYBAUD open Serial Ports C and D serDopen _MYBAUD serCwrFlush flush their input and transmit buffers serCrdFlush serDwrF lush serDrdFlush serCclose MYBAUD close Serial Ports C and D serDclose MYBAUD RabbitCore RCM4300 User s Manual 114 B 5 Prototyping Board Jumper Configurations Figure B 8 shows the header locations used to configure the various Prototyping Board options via jumpers e gt U gt V U gt UU UU DEDEDERDBREI P J J JP J J JP J J P J P e TODTNONO TEE NNAST A D 0 0 0 0 0 0 0 os JP24 JuP23 Figure B 8 Location of Configurable Jumpers on Prototyping Board Table B 6 lists the configuration options using either jumpers or 0 Q surface mount resistors Table B 6 RCM4300 Prototyping Board Jumper Configurations Header Description Pins Connected Factory Default JP1 5 V Current Measurement 1 2 Via trace or jumper Connected JP2 3 3 V Current Measurement 1 2 Via trace or jumper Connected y TxD on header J4 x m PCO TxD LED DS2 JP4 JP4 12 PCO to LED DS2 n c PCO available on header J2 RabbitCore RCM4300 User s Manual 115 Table B 6 RCM4300 P
13. 10 0 0 0 to 10 255 255 255 172 16 0 0 to 172 31 255 255 and 192 168 0 0 to 192 168 255 255 The RCM4300 uses a 10Base T type of Ethernet connection which is the most common scheme The RJ 45 connectors are similar to U S style telephone connectors except they are larger and have 8 contacts An alternative to the direct connection using a crossover cable is a direct connection using a hub The hub relays packets received on any port to all of the ports on the hub Hubs are low in cost and are readily available The RCM4300 uses 10 Mbps Ethernet so the hub or Ethernet adapter can be a 10 Mbps unit or a 10 100 Mbps unit In a corporate setting where the Internet is brought in via a high speed line there are typi cally machines between the outside Internet and the internal network These machines include a combination of proxy servers and firewalls that filter and multiplex Internet traf fic In the configuration below the RCM4300 could be given a fixed address so any of the computers on the local network would be able to contact it It may be possible to configure the firewall or proxy server to allow hosts on the Internet to directly contact the controller but it would probably be easier to place the controller directly on the external network out side of the firewall This avoids some of the configuration complications by sacrificing some security RabbitCore RCM4300 User s Manual 76 Firewall Adapter P
14. ADSPIBUSY 4094 if the A D converter is locked out or if the SPI port is in use if more than SPI MAXTIME milliseconds elapse since the last attempt to grab the port semaphore by the A D converter a fatal runtime error ETIME results ADTIMEOUT 4095 if the conversion is incomplete or busy bit timeout ADOVERFLOW 4096 for overflow or out of range SEE ALSO anaInCalib anaIn anaInVolts RabbitCore RCM4300 User s Manual 68 anaInEERd root int anaInEERd unsigned int channel unsigned int opmode unsigned int gaincode DESCRIPTION Reads the calibration constants gain and offset for an input based on their designated position in the flash memory and places them into global tables_adcCalibS adc CalibD and adcCalibM for analog inputs Depending on the flash size the fol lowing macros can be used to identify the starting address for these locations ADC CALIB ADDRS address start of single ended analog input channels ADC CALIB ADDRD address start of differential analog input channels ADC CALIB ADDRM address start of milliamp analog input channels NOTE This function cannot be run in RAM PARAMETER channel the channel number 0 to 7 corresponding to LNO to LN7 opmode the mode of operation SINGLE single ended input DIFF differential input mAMP 4 20 mA input channel SINGLE DIFF mAMP 0 AINO AINO AINI AINO 1 AIN1 AIN1 AINO AIN1 2
15. Board First prepare the AC adapter for the country where it will be used by selecting the plug The RCM4300 Development Kit presently includes Canada Japan U S Australia N Z U K and European style plugs Snap in the top of the plug assembly into the slot at the top of the AC adapter as shown in Figure 4 then press down on the spring loaded clip below the plug assembly to allow the plug assembly to click into place Release the clip to secure the plug assembly in the AC adapter Connect the AC adapter to 3 pin header J1 on the Prototyping Board as shown in Figure 4 The connector may be attached either way as long as it is not offset to one side the center pin of J1 is always connected to the positive terminal and either edge pin is ground Plug in the AC adapter The PWR LED on the Prototyping Board next to the power con nector at J1 should light up The RCM4300 and the Prototyping Board are now ready to be used NOTE A RESET button is provided on the Prototyping Board next to the battery holder to allow a hardware reset without disconnecting power To power down the Prototyping Board unplug the power connector from J1 You should disconnect power before making any circuit adjustments in the prototyping area changing any connections to the board or removing the RCM4300 from the Prototyping Board RabbitCore RCM4300 User s Manual 15 2 3 Run a Sample Program Once the RCM4300 is connected as described in the preceding pag
16. RabbitCore RCM4300 User s Manual 113 B 4 4 1 RS 232 RS 232 serial communication on header J4 on both Prototyping Boards is supported by an RS 232 transceiver installed at U3 This transceiver provides the voltage output slew rate and input voltage immunity required to meet the RS 232 serial communication protocol Basically the chip translates the Rabbit 4000 s signals to RS 232 signal levels Note that the polarity is reversed in an RS 232 circuit so that a 43 3 V output becomes approxi mately 10 V and O V is output as 10 V The RS 232 transceiver also provides the proper line loading for reliable communication RS 232 can be used effectively at the RCM4300 module s maximum baud rate for distances of up to 15 m RS 232 flow control on an RS 232 port is initiated in software using the serXflowcon trolon function call from RS232 LIB where X is the serial port C or D The locations of the flow control lines are specified using a set of five macros SERX RTS PORT Data register for the parallel port that the RTS line is on e g PCDR SERA RTS SHADOW Shadow register for the RTS line s parallel port e g PCDRShadow SERA RTS BIT The bit number for the RTS line SERA CTS PORT Data register for the parallel port that the CTS line is on e g PCDRShadow SERA CTS BIT The bit number for the CTS line Standard 3 wire RS 232 communication using Serial Ports C and D is illustrated in the following sample code
17. The instructions are specifically for Windows 2000 but the interface is similar for other versions of Windows TIP If you are using a PC that is already on a network you will disconnect the PC from that network to run these sample programs Write down the existing settings before changing them to facilitate restoring them when you are finished with the sample pro grams and reconnect your PC to the network 1 Go to the control panel Start gt Settings gt Control Panel and then double click the Network icon 2 Select the network interface card used for the Ethernet interface you intend to use e g TCP IP Xircom Credit Card Network Adapter and click on the Properties button Depending on which version of Windows your PC is running you may have to select the Local Area Connection first and then click on the Properties button to bring up the Ethernet interface dialog Then Configure your interface card for a 10Base T Half Duplex or an Auto Negotiation connection on the Advanced tab NOTE Your network interface card will likely have a different name 3 Now select the IP Address tab and check Specify an IP Address or select TCP IP and click on Properties to assign an IP address to your computer this will disable obtain an IP address automatically IP Address 10 10 6 101 Netmask 255 255 255 0 Default gateway 10 10 6 1 4 Click OK or Closes to exit the various di
18. applies only to Prototyping Board Gain Code Actual Gain 2 ange 0 1 0 22 5 1 1 8 0 11 25 2 3 6 0 5 6 3 4 5 0 4 5 4 7 2 0 2 8 5 9 0 0 2 25 6 14 4 0 1 41 7 18 0 1 126 RabbitCore RCM4300 User s Manual 64 anaInVolts continued RETURN VALUE A voltage value corresponding to the voltage on the analog input channel ADSPIBUSY 4094 if the A D converter is locked out or if the SPI port is in use if more than SPI MAXTIME milliseconds elapse since the last attempt to grab the port semaphore by the A D converter a fatal runtime error ETIME results ADTIMEOUT 4095 if the conversion is incomplete or busy bit timeout ADOVERFLOW 4096 for overflow or out of range SEE ALSO analInCalib anaIn anaInmAmps brdInit RabbitCore RCM4300 User s Manual 65 float anaInDiff unsigned int channel DESCRIPTION Reads the state of differential analog input channels and uses the previously set calibra anaInDiff tion constants to convert it to volts unsigned int gaincode PARAMETERS channel the channel number 0 to 7 corresponding to LNO to LN7 channel DIFF Voltage Range V 0 AINO AINI 22 5 to 422 5 1 AIN1 AIN1 2 AIN2 AIN3 22 5 to 22 5 3 AIN3 AIN3 4 AIN4 AINS 22 5 to 22 5 5 AINS AINS5 6 AIN6 AIN7 7 AIN7 AIN7 Accessible on Prototyping Board gaincode the gain code of 0 to 7 applies only to Prototy
19. 2 LSB 2 5 LSB Differential Linearity 0 5 LSB Dynamic Characteristics Throughput Rate 52 ksamples s Voltage Reference Accuracy V ef 2 048 V and 2 5 V 0 05 0 25 Buffer Amp Source Current 20 mA Buffer Amp Sink Current 200 uA Short Circuit Current 20 mA RabbitCore RCM4300 User s Manual A 1 2 Headers The RCM4300 uses headers at J1 and J4 for physical connection to other boards J4 is a 2 x 25 SMT header with a 1 27 mm pin spacing J1 the programming port is a 2 x 5 header with a 1 27 mm pin spacing Figure A 3 shows the layout of another board for the RCM4300 to be plugged into These reference design values are relative to the mounting hole 1 56 39 0 016 Y 0 4 94 0 050 Y RCM4300 Series 1 27 4 7 Footprint A 0 875 ean 22 2 Y k 0 19 y 6 gt 0 284 7 2 0 334 0 72 62 E 8 5 18 E 16 Figure A 3 User Board Footprint for RCM4300 RabbitCore RCM4300 User s Manual 93 A 2 Rabbit 4000 DC Characteristics Table A 3 Rabbit 4000 Absolute Maximum Ratings Symbol Parameter Maximum Rating Ta Operating Temperature 40 to 85 C Ts Storage Temperature 55 to 125 C Vi Maximum Input Voltage js oy VDDio Maximum Operating Voltage 3 6 V Stresses beyond those listed in Table A 3 may cause permanent damage The ratings are stress ratings only and functional operation of th
20. 3 6 2 75 0 4 506 x5 4 5 2 20 0 2 816 x8 7 2 1 375 0 2 253 x10 9 0 1 100 0 1 408 x16 14 4 0 688 0 1 126 x20 18 0 550 RabbitCore RCM4300 User s Manual 111 B 4 3 2 Thermistor Input Analog input LN7_IN on the Prototyping Board was designed specifically for use with a thermistor at JP25 in conjunction with the THERMISTOR C sample program which demon strates how to use the analog input to measure temperature which will be displayed in the Dynamic C STDIO window The sample program is targeted specifically for the thermistor included with the Development Kit with Rg 25 C 3 KQ and p 25 85 3965 Be sure to use the applicable Ro and f values for your thermistor if you use another thermistor BVREF Inline jumper is 470 Q resistor LN7_IN ADC RCM4300 22m 13 3389803 Q mermistor Figure B 7 Prototyping Board Thermistor Input B 4 3 3 A D Converter Calibration To get the best results form the A D converter it is necessary to calibrate each mode single ended or differential for each of its gains It is imperative that you calibrate each of the A D converter inputs in the same manner as they are to be used in the application For example if you will be performing floating differential measurements or differential mea surements using a common analog ground then calibrate the A D converter in the corre sponding manner The calibra
21. 4 for the header pinouts NOTE The same Prototyping Board can be used for several series of RabbitCore mod ules and so the signals at J2 depend on the signals available on the specific RabbitCore module Analog Inputs Header The Prototyping Board s analog signals are presented at header J3 These analog signals are connected via attenuator filter circuits on the Proto typing Board to the corresponding analog inputs on the RCM4300 module Developers can solder wires directly into the appropriate holes or for more flexible development a 2 x 7 header strip with a 0 1 pitch can be soldered into place See Figure B 4 for the header pinouts RabbitCore RCM4300 User s Manual 103 e RS 232 Two 3 wire or one 5 wire RS 232 serial ports are available on the Prototyp ing Board at header J4 A 10 pin 0 1 pitch header strip installed at J4 allows you to connect a ribbon cable that leads to a standard DE 9 serial connector e Current Measurement Option You may cut the trace below header JP1 on the bottom side of the Prototyping Board and install a 1 x 2 header strip from the Develop ment Kit to allow you to use an ammeter across the pins to measure the current drawn from the 5 V supply Similarly you may cut the trace below header JP2 on the bottom side of the Prototyping Board and install a 1 x 2 header strip from the Development Kit to allow you to use an ammeter across the pins to measure the current drawn from the 43 3 V supply e
22. AIN2 AIN2 AIN3 AIN2 3 AIN3 AIN3 AIN2 AIN3 4 AIN4 AIN4 AINS AIN4 5 AIN5 AINS AIN4 AIN5 6 AIN6 AIN6 AIN7 AIN6 7 AIN7 AIN7 AIN6 AIN7 ALLCHAN read all channels for selected opmode Not accessible on Prototyping Board RabbitCore RCM4300 User s Manual 69 anaInEERd continued gaincode the gain code of 0 to 7 The gaincode parameter is ignored when channel is ALLCHAN Gain Code Actual Gain uc di 0 1 0 22 5 1 1 8 0 11 25 2 3 6 0 5 6 3 4 5 0 4 5 4 7 2 0 2 8 5 9 0 0 2 25 6 14 4 0 1 41 7 18 0 1 126 Applies to Prototyping Board RETURN VALUE 0 if successful if address is invalid or out of range SEE ALSO analnEEWr analnCalib RabbitCore RCM4300 User s Manual 70 anaInEEWr int anaInEEWr unsigned int channel int opmode unsigned int gaincode DESCRIPTION Writes the calibration constants gain and offset for an input based from global tables _adcCalibS adcCalibD and adcCalibM to designated positions in the flash memory Depending on the flash size the following macros can be used to identify the starting address for these locations ADC_CALIB_ADDRS address start of single ended analog input channels ADC_CALIB_ADDRD address start of differential analog input channels ADC CALIB ADDRM address start of milliamp analog input channels NOTE This function cannot be run in RAM PARAMETER channel the channel n
23. Backup Battery A 2032 lithium ion battery rated at 3 0 V 220 mA h provides battery backup for the RCM4300 SRAM and real time clock RabbitCore RCM4300 User s Manual 104 B 2 Mechanical Dimensions and Layout Figure B 2 shows the mechanical dimensions and layout for the Prototyping Board 2 735 69 5 C3 E C 3V E mm s CITTA C20 NAT JP2 m E J 2 E i 3 Kat V IS Hee OO0000000000000000000000 OOO0000000000000000000000 1 C C i MO QO000000 Q 902000000 Q O00000000 OO Pe OOOOOOOO Px OCOOOOOOOOO000O re OOO0OOOOOOOOOOQgl Ps 900000000000000 90000000000000 90000000000000 OO0000000000000 sr 90000000000000 900000000000000 2900000000000000 0000000000000 s90000000000000 E 090000000900000 re OOoooooooooooo 9000000000000000 9000000000000000 0000000000000000 0000000000000000 z OOOOOOOOOOOOO LC 90000000 k 1 B 00000 000000 zz 2 2 9 MERCI 6 2 3 5 ULT gor TET P25 R23 R22 R24 OP am T NAM V VVJ og aeos RTT RTE DS2 o g E USOS MAS E UX29 J4 f l QQ HS E 3 10 78 8 3 80 97 es AN dT BOD
24. Dynamic C FAT file system module where data are stored and handled using the same directory file structure commonly used on PCs A removable microSD Card can be hot RabbitCore RCM4300 User s Manual 6 swapped to transfer data quickly and easily using a standardized file system that can be read away from the RCM4300 installation The RCM4300 receives its 3 3 V power from the customer supplied motherboard on which it is mounted The RCM4300 can interface with all kinds of CMOS compatible digital devices through the motherboard 1 1 RCM4300 Features e Small size 1 84 x 2 85 x 0 84 47 mm x 72 mm x 21 mm Microprocessor Rabbit 4000 running at up to 58 98 MHz e Up to 28 or 36 general purpose I O lines configurable with up to four alternate functions e 3 3 V I O lines with low power modes down to 2 kHz Up to six CMOS compatible serial ports four ports are configurable as a clocked serial ports SPI and one or two ports are configurable as SDLC HDLC serial ports Combinations of up to eight single ended or four differential 12 bit analog inputs RCM4300 only e Alternate I O bus can be configured for 8 data lines and 6 address lines shared with parallel I O lines I O read write e Upto 2 MB flash memory up to 1 MB fast program execution SRAM and 512K data SRAM e Removable microSD Card memory that may be used with the standardized directory structure supported by the Dynamic C FAT File System module and may
25. E I O Strobe I7 RCM4310 only D15 PWM3 RXA RXE Input Capture 47 PD7 Input Output A D converter 48 CONVERT Digital Input RCM4300 only 1 15 V 2 048 V 2 500 V on chip ref voltage RCM4300 only Analog reference 49 VREF voltage 50 GND Ground Analog ground 4 1 1 Memory I O Interface The Rabbit 4000 address lines A0 A19 and all the data lines DO D7 are routed inter nally to the onboard SRAM chips I 0 write IOWR and 1 0 read IORD are available for interfacing to external devices and are also used by the RCM4300 Parallel Port A can also be used as an external I O data bus to isolate external I O from the main data bus Parallel Port B pins PB2 PB7 can also be used as an auxiliary address bus When using the auxiliary I O bus for any reason you must add the following line at the beginning of your program define PORTA AUX IO required to enable auxiliary I O bus Selected pins on Parallel Ports C D and E as specified in Table 2 may be used for input capture quadrature decoder DMA and pulse width modulator purposes 4 1 2 Other Inputs and Outputs The PES5 PE7 pins can be brought out to header J4 instead of the STATUS and the two SMODE pins SMODEO and SMODEI as explained in Appendix A 5 RESET IN is normally associated with the programming port but may be used as an external input to reset the Rabbit 4000 microprocessor and the RCM4300 memory RESET OUT is
26. V power supply This allows the SRAM and the inter nal Rabbit 4000 real time clock to retain data with the RCM4300 powered down 43 3 VIN 4 External Battery P O a VBAT EXT 7 Figure C 1 External Battery Connections at Header J2 A lithium battery with a nominal voltage of 3 V and a minimum capacity of 165 mA h is recommended A lithium battery is strongly recommended because of its nearly constant nominal voltage over most of its life RabbitCore RCM4300 User s Manual 118 The drain on the battery by the RCM4300 is typically 7 5 uA when no other power is sup plied If a 165 mA h battery is used the battery can last about 2 5 years 165 mA h 75 HA 2 5 years The actual battery life in your application will depend on the current drawn by components not on the RCM4300 and on the storage capacity of the battery The RCM4300 does not drain the battery while it is powered up normally Cycle the main power off on after you install a backup battery for the first time and when ever you replace the battery This step will minimize the current drawn by the real time clock oscillator circuit from the backup battery should the RCM4300 experience a loss of main power NOTE Remember to cycle the main power off on any time the RCM4300 is removed from the Prototyping Board or motherboard since that is where the backup battery would be located Rabbit Semiconductor s Tech
27. coat as cn Sev inane eE O iia 47 5 2 Dynamic C Function Calls tico eie deed eee E E tte oye es 49 3 2 Digital NO ds ii be el iet Ee fecus 49 5 2 2 Serial Communication Drivers cccccccccccccssssccccecessececcecessececeecsessseccecesssuececcsessueceecessaseeesensaees 49 23 23 venal Flash Memory USE intei tree ie Beh nie t Pete pete te Pere 50 IL User Block neta stet a 52 5 2 5 SRAM A terere REB IEEE eI Roe get tied 52 23 2 6 RCMA300 Cloning oett oret rest er tenerte ires e peores 53 5 257 microSDTM Card Drivers ii erret rte petere rennen Ee ere Pret as tt RE rere pee Perg 53 5 2 8 Prototyping Board Function Calls eese ener enne entente 54 A EA retento rtr eri e etre eee oen 54 23 2 8 2 Al tii 55 5 2 9 Analog Inputs RCM4300 only oococoocccoconacononnnonncconoconnccnn ccoo nononccono non nennen entente tnnt ene nennen ner enne 56 5 3 Upgrading Dyn mic C ener e DU CRT EO HR P ette HORS 73 9 3 1 Add On Modules ccs NN 73 Chapter 6 Using the TCP IP Features 74 OA TCP IP ConneGtlons ia 74 6 2 TCP IP Primer on IP Addresses eere terrere PER ee ene ER R RE E E 76 6 2 1 IP Addresses Explamed tni miras 78 6 2 2 How IP Addresses are Used cee eessssencesseceesecescecesceenecesceceaeceneecneesseeesaeesseecsaeeeeeesseeeeaeceeeeeseens 79 6 2 3 Dynamically Assigned Internet Addresses oooocnoccnocnnonconnncncononononnccnnonnconnonno cono nennen 80 6 3 Placing Your Device on the Network eren eene treten n
28. com support If the sample programs ran fine you are now ready to go on Additional sample programs from the SAMPLES TCPIP folder are described in the Dynamic C TCP IP User s Manual Please refer to the Dynamic C TCP IP User s Manual to develop your own applications An Introduction to TCP IP provides background information on TCP IP and is available on the CD and on our Web site RabbitCore RCM4300 User s Manual 86 APPENDIX A RCM4300 SPECIFICATIONS Appendix A provides the specifications for the RCM4300 and describes the conformal coating RabbitCore RCM4300 User s Manual 87 A 1 Electrical and Mechanical Characteristics Figure A 1 shows the mechanical dimensions for the RCM4300 o 7e o A Please refer to the RCM4300 footprint diagram later in this appendix for precise header locations oe x3 R o co h 2 n j 3 of c Y y oS Fil dg ES Re we 1 84 S2sase 47 o Figure A 1 RCM4300 Dimensions NOTE All measurements are in inches followed by millimeters enclosed in parentheses All dimensions have a manufacturing tolerance of 0 01 0 25 mm RabbitCore RCM4300 User s Manual 88 It is recommended that you allow for an exclusion zone of 0 04 1 mm around the RCM4300 in all directions when the RCM4300 is i
29. reduce code size and improve processing speed this equates to a core module that is fast efficient and the ideal solution for a wide range of embedded applications The RCM4300 also fea tures an integrated 10 100Base T Ethernet port an optional A D converter and removable hot swappable memory cards Each production model has a Development Kit with the essentials that you need to design your own microprocessor based system and includes a complete Dynamic C software development sys tem The Development Kits also contains a Prototyping Board that will allow you to evaluate the specific RCM4300 module and to prototype circuits that interface to the module You will also be able to write and test software for the RCM4300 modules Throughout this manual the term RCM4300 refers to the complete series of RCM4300 RabbitCore modules unless other production models are referred to specifically The RCM4300 has a Rabbit 4000 microprocessor operating at up to 58 98 MHz a fast program execution SRAM data SRAM serial flash memory an 8 channel A D converter two clocks main oscillator and timekeeping and the circuitry necessary for reset and management of battery backup of the Rabbit 4000 s internal real time clock and 512K of static RAM One 50 pin header brings out the Rabbit 4000 I O bus lines parallel ports A D converter channels and serial ports The RCM4300 s mass storage capabilities make them suited to running the optional
30. several options You can either place the RCM4300 directly on the Internet with a real Internet address or place it behind the firewall If you place the RCM4300 behind the fire wall you need to configure the firewall to translate and forward packets from the Internet to the RCM4300 RabbitCore RCM4300 User s Manual 81 6 4 Running TCP IP Sample Programs We have provided a number of sample programs demonstrating various uses of TCP IP for networking embedded systems These programs require you to connect your PC and the RCM4300 module together on the same network This network can be a local private net work preferred for initial experimentation and debugging or a connection via the Internet RCM4300 System RCM4300 System User s PC Ethernet P Ethernet crossover To additional cable network Hub elements Direct Connection network of 2 computers Direct Connection Using a Hub RabbitCore RCM4300 User s Manual 82 6 4 1 How to Set IP Addresses in the Sample Programs With the introduction of Dynamic C 7 30 we have taken steps to make it easier to run many of our sample programs You will see a TCPCONFIG macro This macro tells Dynamic C to select your configuration from a list of default configurations You will have three choices when you encounter a sample program with the TCPCONF
31. the documentation menu and the third is for the Rabbit Field Utility a tool used to download precompiled software to a target system RabbitCore RCM4300 User s Manual 11 2 2 Hardware Connections There are four steps to connecting the Prototyping Board for use with Dynamic C and the sample programs 1 Prepare the Prototyping Board for Development 2 Attach the RCM4300 module to the Prototyping Board 3 Connect the programming cable between the RCM4300 and the PC 4 Connect the power supply to the Prototyping Board 2 2 1 Step 1 Prepare the Prototyping Board for Development Snap in four of the plastic standoffs supplied in the bag of accessory parts from the Devel opment Kit in the holes at the corners as shown in Figure 2 NOTE Pay attention to use the hole that is pointed out towards the bottom left of the Prototyping Board since the hole below it is used for a standoff when mounting the RCM4300 on the Prototyping Board 2COCOCOCOCOCOCOCOCO SSS D C LT CET ES SS omm o E ce CE o a P f 4 Y eccocooooo E n A 1 Figure 2 Insert Standoffs RabbitCore RCM4300 User s Manual 12 2 2 2 Step 2 Attach Module to Prototyping Board Turn the RCM4300 module so that the mounting holes line up with the corresponding holes on the Prototyping Board Insert the metal standoffs as shown in Figure 3 secure them from the bottom using the 4 40 x 3 16 screws and washers then insert the mod
32. the user begin instead by using a direct connection between a PC and the RCM4300 using an Ethernet crossover cable or a simple arrangement with a hub A crossover cable should not be confused with regular straight through cables In order to set up this direct connection the user will have to use a PC without networking or disconnect a PC from the corporate network or install a second Ethernet adapter and set up a separate private network attached to the second Ethernet adapter Disconnecting your PC from the corporate network may be easy or nearly impossible depending on how it is set up If your PC boots from the network or is dependent on the network for some or all of its disks then it probably should not be disconnected If a second Ethernet adapter is used be aware that Windows TCP IP will send messages to one adapter or the other depending on the IP address and the binding order in Microsoft products Thus you should have different ranges of IP addresses on your private network from those used on the cor porate network If both networks service the same IP address then Windows may send a packet intended for your private network to the corporate network A similar situation will take place if you use a dial up line to send a packet to the Internet Windows may try to send it via the local Ethernet network if it is also valid for that network The following IP addresses are set aside for local networks and are not allowed on the Internet
33. 00 ka X ADE LNO_IN ANN e E Um LN1 IN AN e E 400 kQ g bs 22nF 22nF J 5 i i JP23 JP24 a BVREF JL JL 2 048 V 3 1 AGND Figure B 6 A D Converter Inputs The A D converter chip can make either single ended or differential measurements depending on the value of the opmode parameter in the software function call Adjacent A D converter inputs are paired to make differential measurements The default setup on the Prototyping Board is to measure only positive voltages for the ranges listed in Table B 3 Table B 3 Positive A D Converter Input Voltage Ranges Min Voltage RUPES SONAD Gain A D Converter Resolution V V Multiplier Actual Gain mV 0 0 122 528 x1 1 11 0 0 111 264 x2 1 8 5 5 0 0 45 632 x4 3 6 2 75 0 0 4 506 x5 4 5 2 20 0 0 12 816 x8 7 2 1 375 0 0 12 253 x10 9 0 1 100 0 0 1 408 x16 14 4 0 688 0 0 1 126 x20 18 0 550 RabbitCore RCM4300 User s Manual 110 Many other possible ranges are possible by physically changing the resistor values that make up the attenuator circuit NOTE Analog input LN7_IN does not have the 10 kQ resistor installed and so no resistor attenuator is available limiting its maximum input voltage to 2 V This input is intended to be used for a thermistor that you may install at header location JP25 It is also possible to read a negative voltage on LNO IN LNS IN by moving the 0 Q jumper see
34. 1 2 Tied to analog ground x JP23 LN4_IN LN6_IN 2 3 Tied to VREF 1 2 Tied to analog ground x JP24 LNO IN LN3 IN 2 3 Tied to VREF JP25 Thermistor Location 1 2 n c NOTE Jumper connections JP3 JP10 JP12 JP14 JP16 JP18 JP23 and JP24 are made using 0 O surface mounted resistors Jumper connections JP11 JP13 JP15 JP17 and JP19 JP22 are made using 470 Q surface mounted resistors RabbitCore RCM4300 User s Manual 117 APPENDIX C POWER SUPPLY Appendix C provides information on the current requirements of the RCM4300 and includes some background on the chip select circuit used in power management C 1 Power Supplies The RCM4300 requires a regulated 3 0 V 3 6 V DC power source The RabbitCore design presumes that the voltage regulator is on the user board and that the power is made available to the RCM4300 board through header J2 An RCM4300 with no loading at the outputs operating at 58 98 MHz typically draws 240 mA and may draw up to 275 mA at 3 6 V and 85 C the corresponding current draw for the RCM4210 is typically 200 mA and up to 225 mA at 3 6 V and 85 C C 1 1 Battery Backup The RCM4300 does not have a battery but there is provision for a customer supplied bat tery to back up the data SRAM and keep the internal Rabbit 4000 real time clock running Header J2 shown in Figure C 1 allows access to the external battery This header makes it possible to connect an external 3
35. 4 using the T dz T jumpers supplied in the Development Kit you will also Sour lo e NORD tie TxE PD6 and RxE PD7 together with a soldered pe 3 PootNo PD1 LN1 O PD2 LN2 wire or with a wire jumper if you have soldered in the PDSILN3 o o PDALNA PDS LNS O PD6 LN6 IDC header supplied with the accessory parts in the mu WEICH C dip Development Kit Once you have compiled and run this program press and release switches S2 or S3 on the Prototyping Board The data echoed between the serial ports will be displayed in the STDIO window RabbitCore RCM4300 User s Manual 23 3 2 4 A D Converter Inputs RCM4300 only The following sample programs are found in the SAMPLES RCM4300 aDc folder AD CAL ALL C Demonstrates how to recalibrate all the single ended analog input channels with one gain using two known voltages to generate the calibration constants for each channel The constants will be written into the user block data area Connect a positive voltage from 0 20 V DC for example the power supply positive out put to analog input channels LNOIN LNGIN on the Prototyping Board and connect the ground to GND Use a voltmeter to measure the voltage and follow the instructions in the Dynamic C STDIO window once you compile and run this sample program Remember that analog input LN7 on the Prototyping Board is used with the thermistor and is not be used with this sample program NOTE The a
36. 8 Prototyping Board Function Calls The functions described in this section are for use with the Prototyping Board features The source code is in the Dynamic C LIB Rabbit4000 RCM4xxx RCM43xx LIB library if you need to modify it for your own board design There are several internal function calls denoted by an underscore at the start of the func tion name that should not be modified These internal function calls control the SPI port sharing NOTE The analog input function calls are supported only by the RCM4300 model since the RCM4310 does not have an A D converter The sample programs in the Dynamic C SAMPLES RCM4300 folder illustrate the use of the function calls Other generic functions applicable to all devices based on Rabbit microprocessors are described in the Dynamic C Function Reference Manual 5 2 8 1 Board Initialization brdInit void brdInit void DESCRIPTION Call this function at the beginning of your program This function initializes Parallel Ports A through E for use with the Prototyping Board and on the RCM4300 model loads the stored calibration constants for the A D converter This function call is intended for demonstration purposes only and can be modified for your applications Summary of Initialization 1 I O port pins are configured for Prototyping Board operation Unused configurable I O are set as tied outputs RS 232 is not enabled LEDs are off Uus cuo pc pp The slave port is disabled
37. C OS IT NOTE This function call is not power fail safe The writeUserBlock function call provides a safer way to store critical data using redundant copies PARAMETERS flashDst the physical address of the flash destination Src near pointer to the source dat5a len the number of bytes to write RETURN VALUE 0 if successful if an attempt was made to write to the user ID block or program area The return values below apply only if SPI USE UCOS MUTEX is not defined EBUSY to indicate a busy writing to the serial flash positive N to indicate that the SPI port is being used by device n if more than SPI MAXTIME milliseconds elapse while waiting for the SPI port to become available one of the following two runtime errors will occur ERR SPI MUTEX ERROR when using n C OS IT or ETIME if not using nC OS II RabbitCore RCM4300 User s Manual 51 5 2 4 User Block Certain function calls involve reading and storing calibration constants from to the simulated EEPROM in flash memory located at the top 2K of the reserved user block memory area 3800 39FF This leaves the address range 0 37FF in the user block available for your application These address ranges may change in the future in response to the volatility in the flash memory market in particular sector size The sample program USERBLOCK_INFO C in the Dynamic C SAMPLES USERBLOCK folder can be used to determine the version of the ID block the size of the ID and user bloc
38. CON BOR BOD A A TETOS BO GOO GOO6 GOOD amp Y O C ver vx 1 R1 R12 cara Lo RZD R2BE 0000 IFFI EM J e d 4563333 S2 53 Go eno 0 15 3 8 0 165 L 4 2 Figure B 2 Prototyping Board Dimensions RabbitCore RCM4300 User s Manual 105 Table B 1 lists the electrical mechanical and environmental specifications for the Proto typing Board Table B 1 Prototyping Board Specifications Parameter Specification Board Size 3 80 x 3 80 x 0 48 97 mm x 97 mm x 12 mm Operating Temperature 0 C to 70 C Humidity 5 to 95 noncondensing Input Voltage 8 V to 24 V DC Maximum Current Draw 800 mA max for 3 3 V supply including user added circuits 1 A total 3 3 V and 5 V combined 1 3 x 2 0 33 mm x 50 mm throughhole 0 1 spacing BEIDE UNE additional space for SMT components One 2 x 25 header socket 1 27 mm pitch to accept RCM4300 One 1 x 3 IDC header for power supply connection Connectors One 2 x 5 IDC RS 222 header 0 1 pitch Two unstuffed header locations for analog and RCM4300 signals 25 unstuffed 2 pin header locations for optional configurations B 3 Power Supply The RCM4300 requires a regulated 3 0 V 3 6 V DC power source to operate Depending on the amount of current required by the application different regulators can be used to supply this voltage The Prototyping Board has an onb
39. D converter conformal coating 99 100 Ethernet cables 74 access via Prototyping Board how to tell them apart 74 110 Ethernet connections 74 76 function calls 10 100Base T 76 apnaln 4 eee 60 Development APP M E 3 10Base T Ethernet card 74 analnCalib 62 312 MB microSD Card 9 additional resources 86 analInConfig 56 AC adapten a 3 direct connection 76 ata lnDEHE Luciae 66 DC power Supply cutus Ethernet cables 76 analnDriver 58 Getting rc instructions 3 Ethernet hub 74 analnEERd coco 69 Programming cable IP addresses coc 76 78 analnEEWr cocos ME PM ss p MAC addresses coc 79 analnmAmps 68 function calls T p e c 75 analnVolts 64 digInAlert A 22 Ethernet port 37 inputs timedAlert EAS 55 pinout sess 37 differential measurements Vo buffer sourcing a exclusion ZONE 89 111 ing limits 95 negative voltages 111 s b ad mM as E F is ended measurements SMODE ns 35 38 os vem E dios rd additional information dimensions a a online documentation 10 Prototyping Board deseos ana H analog inputs See A D converter RCM4300 wp d bus 88 auxiliary I O bus 35 Dynamic C
40. ED DS4 above the microSD Card is on to indi cate that the microSD Card is mounted The LED will go off when the microSD Card is unmounted indicating that it is safe to remove it RabbitCore RCM4300 User s Manual 45 Figure 14 Insertion Removal of microSD Card Rabbit Semiconductor recommends that you use the microSD Card holder at header J3 only for the microSD Card since other devices are not supported Be careful to remove and insert the card as shown and be careful not to insert any foreign objects which may short out the contacts and lead to the destruction of your card It is possible to hot swap microSD Cards without removing power from the RCM4300 modules The file system must be closed before the cards can be hot swapped The chip selects associated with the card must be set to their inactive state and read write opera tions addressed to the microSD Card port cannot be allowed to occur These operations can be initiated in software by sensing an external switch actuated by the user and the card can then be removed and replaced with a different one Once the application program detects a new card the file system can be opened These steps allow the microSD Card to be installed or removed without affecting either the program which continues to run on the RCM4300 module o
41. ELED C 85 put on JA sse og R Teer AV MAC 0 IFEN or EPA on JA eM TAT VT PINGLED C e 85 JP5 LN1 or PD1 on J4 98 spectrum spreader time delays PINGME 85 er Mr 97 SMTP C e stes 85 n a E on is i a tamper detection 20 45 USERBLOCK_CLEAR C 52 JP9 LN6 or PD6 on J4 99 VBAT RAM memory 20 45 USERBLOCK_INFO C 52 Rabbit subsystems 30 SD Card adapter 46 a 28 RCM4300 serial communication 36 mounting on Prototyping function calls 49 Board 13 Prototyping Board RabbitCore RCM4300 User s Manual 123 RS 232 onenn 114 software PACKET LIB 49 RS232 LIB 49 serial flash memory function calls 50 sbfRead 50 sbfWriteFlash 51 software BOOTDEV SFLASH LIB 50 serial ports sss 36 Ethernet port 37 programming port 38 Serial Port B shared 36 Serial Ports E F configuration information 23 36 SOMA ia 10 auxiliary I O bus 35 49 VO drivers 49 libraries ADC ADS7870 LIB 56 BOOTDEV SFLASH LIB 50 RCMA3xx LIB 54 SDFLASH LIB 53 microSD Card 53 serial communication drivers 49 serial flash boot drivers 50 specifications 87 A D convert
42. Figure B 6 on header JP23 or JP24 associated with the A D converter input from analog ground to the reference voltage generated and buffered by the A D converter Adjacent input channels are paired moving the jumper on JP 23 changes both of the paired channels LN4 IN CLN5 IN and moving the jumper on JP24 changes LNO IN LNI IN and LN2 IN LN3 IN At the present time Rabbit Semiconductor does not offer the software drivers to work with single ended negative voltages but the differential mode described below may be used to measure negative voltages Differential measurements require two channels As the name differential implies the dif ference in voltage between the two adjacent channels is measured rather than the differ ence between the input and analog ground Voltage measurements taken in differential mode have a resolution of 12 bits with the 12th bit indicating whether the difference is positive or negative The A D converter chip can only accept positive voltages as explained in Section 4 4 Both differential inputs must be referenced to analog ground and both inputs must be positive with respect to analog ground Table B 4 provides the differential voltage ranges for this setup Table B 4 Differential Voltage Ranges Min Differential Max Differential 3 Voltage with Gain A D Converter Resolution Voltage Te prescaler Multiplier Actual Gain mV 0 22 528 x1 1 11 0 11 264 x2 1 8 5 5 0 5 632 x4
43. IG macro 1 You can replace the TCPCONFIG macro with individual MY IP ADDRESS MY NET MASK MY GATEWAY and MY NAMESERVER macros in each program You can leave TCPCONF IG at the usual default of 1 which will set the IP configurations to 10 10 6 100 the netmask to 255 255 255 0 and the nameserver and gateway to10 10 6 1 If you would like to change the default values for example to use an IP address of 10 1 1 2 for the RCM4300 module and 10 1 1 1 for your PC you can edit the values in the section that directly follows the General Configuration com ment in the TCP CONFIG LIB library You will find this library in the LIB Rabbit4000 TCPIP directory You can create a CUSTOM CONFIG LIB library and use a TCPCONFIG value greater than 100 Instructions for doing this are at the beginning of the TCP_CONFIG LIB library in the LIB Rabbit 4000 TCPIP directory There are some other standard configurations for TCPCONFIG that let you select different features such as DHCP Their values are documented at the top of the TCP CONFIG LIB library in the LIB Rabbit4000 TCPIP directory More information is available in the Dynamic C TCP IP User s Manual RabbitCore RCM4300 User s Manual 83 6 4 2 How to Set Up your Computer for Direct Connect Follow these instructions to set up your PC or notebook Check with your administrator if you are unable to change the settings as described here since you may need administrator privileges
44. InCalib continued the gain code of 0 to 7 applies only to Prototyping Board Gain Code Actual Gain Eure ange 0 1 0 22 5 1 1 8 0 11 25 2 3 6 0 5 6 3 4 5 0 4 5 4 73 0 2 8 5 9 0 0 2 25 6 14 4 0 1 41 7 18 0 1 126 the first A D converter channel raw count value 0 2047 the voltage or current corresponding to the first A D converter channel value 0 to 20 V or 4 to 20 mA the second A D converter channel raw count value 0 2047 the voltage or current corresponding to the first A D converter channel value 0 to 20 V or 4 to 20 mA 1 if not able to make calibration constants SEE ALSO analn anaInVolts anaInmAmps anaInDiff anaInCalib brdInit RabbitCore RCM4300 User s Manual 63 anaInVolts float anaInVolts unsigned int channel unsigned int gaincode DESCRIPTION Reads the state of a single ended analog input channel and uses the previously set calibration constants to convert it to volts PARAMETERS channel the channel number 0 to 7 corresponding to LNO to LN7 Single Ended t Channel Code gekneed Voltage Range Input Lines V 0 AINO 0 22 5 1 AIN1 0 22 5 2 AIN2 0 22 5 3 AIN3 0 22 5 4 AIN4 0 22 5 5 AINS 0 22 5 6 AIN6 0 22 5 J AIN7 0 2 Negative input is ground T Applies to Prototyping Board t Used for thermistor in sample program gaincode the gain code of 0 to 7
45. Manual 125 Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery amp Lifecycle Information Rabbit Semiconductor 20 101 1153
46. Port B Clock Doubler Backup Battery Support Figure 7 Use of Rabbit 4000 Ports The ports on the Rabbit 4000 microprocessor used in the RCM4300 are configurable and so the factory defaults can be reconfigured Table 2 lists the Rabbit 4000 factory defaults and the alternate configurations RabbitCore RCM4300 User s Manual 30 Table 2 RCM4300 Pinout Configurations Pin Pin Name Default Use Alternate Use Notes 1 3 3 V_IN 2 GND Reset output from Reset 3 RES_OUT Reset output Reset input Generator or external reset input 4 ORD Output External I O read strobe 5 IOWR Output External I O write strobe 6 RESET_IN Input Input to Reset Generator 7 VBAT_EXT Battery input Slave port data bus 8 15 PA 0 7 Input Output SD SD i STD External I O data bus IDO ID7 16 PBO Input Output M Duc BP External I O AddressIA6 e gt A D converter 17 PBI Input Output ARA P i t CLKA DEAN External YO Address IA7 LS por 18 PB2 Input Output NES UIS External I O Address IAO 19 PB3 Input Output nd NEUEM External I O Address IA1 20 PB4 Input Output a DOS External O Address IA2 21 PB5 Input Output e DOR External I O Address IA3 SCS 22 PB Input Output S Ue UDS External O Address IA4 23 PB7 Input Output ELD aa External I O Address LAS RabbitCore RCM4300 User s Manual 31 Table 2 RCM4300 Pinout Configurations continued Pin Pin Name Defa
47. RCLKE Input Capture PES is the default configuration 38 PE6 SMODEI Input Output I O Strobe I6 PWM2 TXE DREQO PE6 is the default configuration 39 PE7 STATUS Input Output I O Strobe I7 PWM3 RXA RXE SCLKC DREQI Input Capture PE7 STATUS is the default configuration 40 47 LN 0 7 Analog Input A D converter RCM4300 only RabbitCore RCM4300 User s Manual 33 Table 2 RCM4300 Pinout Configurations continued Pin Pin Name Default Use Alternate Use Notes 40 PDO Input Output T O Strobe IO Timer CO D8 INTO SCLKD TCLKF QRDIB 41 PD1 Input Output IA6 I O Strobe I1 Timer C1 D9 INTI RXD RCLKF QRDIA Input Capture RCM4310 only 42 PD2 Input Output I O Strobe I2 Timer C2 D10 DREQO TXF SCLKC QRD2B SCLKC Serial Port F RCM4310 only 43 PD3 Input Output IA7 I O Strobe I3 Timer C3 D11 DREQ1 RXC RXF QRD2A Input Capture Serial Port F RCMA4310 only 44 PD4 Input Output T O Strobe I4 D12 PWMO TXB TCLKE 45 PD5 Input Output IA6 I O Strobe I5 D13 PWMI RXB RCLKE Input Capture RCM4310 only RabbitCore RCM4300 User s Manual 34 Table 2 RCM4300 Pinout Configurations continued Pin Pin Name Default Use Alternate Use Notes T O Strobe I6 D14 PWM2 TXA TXE 46 PD6 Input Output IA7 Serial Port
48. RCM4300 Digital Inputs and Outputs eeseeeeeeeeeeseeee eene nennen nnne enne ennt nne tenen rnnt nenne 29 4 1 1 Memory I O Interface inne deer tree terere te reed Hind tete Ere Re diane dadas 35 4 1 2 Other Inputs and Outputs irssi eesriie n a e E K E e EE eE E K E Kaa EE 35 4 2 Serial COMMUNICALION x c svc c cessacestveseredacsvennssdecouseevecesvnepvocaesndaatebunecenstanovesshvedesvensivedesnecebereevecedyconstes 36 ADL Senal POTS EPIRI 36 A 22 A MEER 37 4 2 3 Programming Port oe ee IRR DER EET IRE GU DDR ODD UE 38 abu uctus MC ERU 39 4 3 1 Changing Between Program Mode and Run Mode eeeeeeeeeeeneeeen nennen 39 4 3 2 Standalone Operation of the RCMA300 essere enne nene enne nenne 40 RabbitCore RCM4300 User s Manual 3 4 4 A D Converter RCM4300 only eese esee eene enne enne ner en nnne ocn eren ettet tenen rnnt ennt A 4 4 1 A D Converter Power Supply iret pneter n e EET ETERS 43 ADO MA tee Pe ete ok ERU E TEC Ee cubre doce 44 4 9 1 Clock Doublet 5i nee emere o i 44 4 3 2 Spectrum Spreader ferri der torte ti e i Ree pi et ee Ree p edere 44 46 MeMO Y eere PESCE LH EE 45 4 6 SRAM anena ian aE R E etu N t pro ae eee eet 45 4 6 2 Flash Memoty ennen a ope 45 4 6 3 NBAT RAM Memoty eee etim bend ee RR OEO ETE EE aT toed 45 A64 microS DIM Cards eet pe ie 45 Chapter 5 Software Reference 47 5 1 More A bout Dynamic C uio eee r chek utes eed ok ete
49. RETURN VALUE None RabbitCore RCM4300 User s Manual 54 5 2 8 2 Alerts These function calls can be found in the Dynamic C LIB Rabbit4000 RCM4xxx RCM4xxx LIB library timedAlert void timedAlert unsigned long timeout DESCRIPTION Polls the real time clock until a timeout occurs The RCM4400W will be in a low power mode during this time Once the timeout occurs this function call will enable the normal power source PARAMETER timeout the duration of the timeout in seconds RETURN VALUE None diglInAlert void digInAlert int dataport int portbit int value unsigned long timeout DESCRIPTION Polls a digital input for a set value or until a timeout occurs The RCM4400W will be in a low power mode during this time Once a timeout occurs or the correct byte is received this function call will enable the normal power source and exit PARAMETERS dataport the input port data register to poll e g PADR portbit the input port bit 0 7 to poll value the value of 0 or 1 to receive timeout the duration of the timeout in seconds enter 0 for no timeout RETURN VALUE None RabbitCore RCM4300 User s Manual 55 5 2 9 Analog Inputs RCM4300 only The function calls used with the Prototyping Board features and the A D converter on the RCM4300 model are in the Dynamic C LIB Rabbit 4000 RCM4xxx ADC_ADS7870 LIB library Dynamic C v 10 07 or later is required to use the A D converter function calls anaI
50. a and the computed equivalent voltages will be displayed Remember that analog input LN7 on the Prototyping Board is used with the thermistor and is not be used with this sample program AD SAMPLE C Demonstrates how to how to use a low level driver on single ended inputs The program will continuously display the voltage averaged over 10 samples that is present on an A D converter channel except LN7 which is reserved for use with a thermistor see Appendix B 4 3 2 The constants used to compute equivalent voltages are read from the user block data area so the sample program cannot be run using the Code and BIOS in RAM compiler option Compile and run this sample program once you have connected a positive voltage from 0 20 V DC to an analog input except LN7 on the Prototyping Board and ground to GND Follow the prompts in the Dynamic C STDIO window Raw data and the computed equiv alent voltages will be displayed If you attach a voltmeter between the analog input and ground you will be able to observe that the voltage in the Dynamic C STDIO window tracks the voltage applied to the analog input as you vary it RabbitCore RCM4300 User s Manual 24 THERMISTOR C Demonstrates how to use analog input LN7 to calculate temperature for display to the Dynamic C STDIO window This sample program assumes that the thermistor is the one included in the Development Kit whose values for beta series resistance and resistance at st
51. ace 4 3 1 Changing Between Program Mode and Run Mode The RCM4300 is automatically in Program Mode when the PROG connector on the pro gramming cable is attached and is automatically in Run Mode when no programming cable is attached When the Rabbit 4000 is reset the operating mode is determined by the state of the SMODE pins When the programming cable s PROG connector is attached both the SMODE pins are pulled high placing the Rabbit 4000 in the Program Mode When the programming cable s PROG connector is not attached the SMODEO pin is pulled low and the SMODEI pin is high so that the Rabbit 4000 powers up in the clocked serial bootstrap mode to load the program from the serial flash when the RCM4300 is operating in the Run Mode RESET RCM4300 when changing mode Press RESET button if using Prototyping Board OR Cycle power off on after removing or attaching programming cable 3 pin power connector mus xs Cable Colored edge T O a tQ de o 64 di O A QOO 0000000 O O 000 oo OOOOOOOOOOOOOOOOOOOOOOOO0 000000000 Figure 9 Switching Between Program Mode and Run Mode RabbitCore RCM4300 User s Manual 39 A program runs in ei
52. ailable on pin 48 of header J3 and can be used as a hardware means of forcing the A D converter to start a conversion cycle at a specific time The CONVERT signal is an edge triggered event and has a hold time of two CCLK periods for debounce A conversion is started by an active rising edge on the CONVERT pin The CONVERT pin must stay low for at least two CCLK periods before going high for at least two CCLK periods Figure 12 shows the timing of a conversion start The double falling arrow on CCLK indicates the actual start of the conversion cycle Conversion starts BUSY o So CONV j Figure 12 Timing Diagram for Conversion Start Using CONVERT Pin Appendix B explains the implementation examples of these features on the Prototyping Board RabbitCore RCM4300 User s Manual 42 4 4 1 A D Converter Power Supply The analog section is isolated from digital noise generated by other components by way of a low pass filter composed of C17 L3 and C28 on the RCM4300 as shown in Figure 13 The V analog power supply powers the A D converter chip 3 3 V V L3 L C28 C17 100 nF T nF Figure 13 Analog Supply Circuit RabbitCore RCM4300 User s Manual 43 4 5 Other Hardware 4 5 1 Clock Doubler The RCM4300 takes advantage of the Rabbit 4000 microprocessor s internal clock doubler A built in clock doubler allows half frequency crystals to be used to reduce radiated emissions The 58 98 MHz f
53. akes place by shortening the high part of the clock If the doubler is not enabled then every clock is shortened during the low part of the clock period The maxi mum shortening for a pair of clocks combined is shown in the table Rabbit Semiconductor s Technical Note TN227 Interfacing External I O with Rabbit 2000 3000 Designs contains suggestions for interfacing I O devices to the Rabbit 3000 and Rabbit 4000 microprocessors RabbitCore RCM4300 User s Manual 97 A 5 Jumper Configurations Figure A 5 shows the jumper locations used to configure the various RCM4300 options The black square indicates pin 1 RCM4300 O JP JP JP JP MO gen C CCCCC CC UUUUUUU NWE LIN Figure A 5 Location of RCM4300 Configurable Positions Table A 8 lists the configuration options Table A 8 RCM4300 Jumper Configurations NS Factory Header Description Pins Connected Default PE6 or SMODEI Output 1 2 PE6 x JP1 on J4 pin 38 2 3 SMODEI PES or SMODEO Output 1 2 PES x JP2 on J4 pin 37 2 3 SMODEO PE7 or STATUS Output l 2 PE7 x JP3 on J4 pin 39 2 3 STATUS 1 2 LNO RCM4300 JP4 LNO or PDO on J4 pin 40 2 3 PDO RCM4310 1 2 LNI RCM4300 JP5 LN1 or PD1 on J4 pin 41 2 3 PD1 RCM4310 RabbitCore RCM4300 User s Manual 98 Table A 8 RCM4300 Jumper Configurations
54. alog boxes RCM4300 IP 10 10 6 101 System Netmask Ed 255 255 255 0 User s PC Ethernet crossover cable Direct Connection PC to RCM4300 Module RabbitCore RCM4300 User s Manual 84 6 5 Run the PINGME C Sample Program Connect the crossover cable from your computer s Ethernet port to the RCM4300 mod ule s RJ 45 Ethernet connector Open this sample program from the SAMPLES TCPIP ICMP folder compile the program and start it running under Dynamic C The crossover cable is connected from your computer s Ethernet adapter to the RCM4300 module s RJ 45 Ethernet connector When the program starts running the green LINK light on the RCM4300 module should be on to indicate an Ethernet connection is made Note If the LNK light does not light you may not be using a crossover cable or if you are using a hub with straight through cables perhaps the power is off on the hub The next step is to ping the module from your PC This can be done by bringing up the MS DOS window and running the pingme program ping 10 10 6 101 or by Start Run and typing the entry ping 10 10 6 101 The ping routine will ping the module four times and write a summary message on the screen describing the operation 6 6 Running Additional Sample Programs With Direct Connect The following sample programs are in the Dynamic C SAMPLES RCM4300 TCPIP folder BROWSELED C This program demonstrates a bas
55. am uses the active copy of the variable pointed to by its associated flag The sample code below shows how a protected variable is defined and how its value can be restored main protected int statel state2 state3 _sysIsSoftReset restore any protected variables The bbram keyword may also be used instead if there is a need to store a variable in battery backed SRAM without affecting the performance of the application program Data integrity is not assured when a reset or power failure occurs during the update process Additional information on bbram and protected variables is available in the Dynamic C User s Manual RabbitCore RCM4300 User s Manual 52 5 2 6 RCM4300 Cloning The RCM4300 does not have a pull up resistor on the PB1 CLKA line of the program ming port Because of this the procedure to generate clones from the RCM4300 differs from that used for other RabbitCore modules and single boards computers You must set the CL FORCE MASTER MODE macro to 1 in the Dynamic C LIB Rabbit4000 BIOSLIB CLONECONFIG LIB library to use the RCM4300 as a master for cloning An RCM4300 master will not run the application and further debugging is not possible as long as the CL FORCE MASTER MODE macro is set to 1 Any cloned RCM4300 modules will be sterile meaning that they cannot be used as a master for cloning To develop and debug an application on an RCM4300 comment out the CL FORCE MASTER MODE macro or set it to 0
56. an output from the reset circuitry that can be used to reset other peripheral devices RabbitCore RCM4300 User s Manual 35 4 2 Serial Communication The RCM4300 module does not have any serial driver or receiver chips directly on the board However a serial interface may be incorporated on the board the RCM4300 is mounted on For example the Prototyping Board has an RS 232 transceiver chip 4 2 1 Serial Ports There are six serial ports designated as Serial Ports A B C D E and F All six serial ports can operate in an asynchronous mode up to the baud rate of the system clock divided by 8 An asynchronous port can handle 7 or 8 data bits A 9th bit address scheme where an additional bit is sent to mark the first byte of a message is also supported Serial Port A is normally used as a programming port but may be used either as an asyn chronous or as a clocked serial port once application development has been completed and the RCM4300 is operating in the Run Mode Digi recommends that you limit the use of Serial Port A to a programming port to avoid any possible conflicts with the PIC micro controller during boot up while the program is loaded If you intend to use Serial Port A as a regular serial port with the RCM4300 operating in the Run Mode Serial Port A must be disconnected from the external device during boot up in order for the program to load Serial Port B shared by the RCM4300 module s serial flash microSD card an
57. andard temperature are given in the part specification Install the thermistor at location JP25 on the Prototyping Board before running this sample program Observe the temperature changes shown in the Dynamic C STDIO window as you apply heat or cold air to the thermistor 3 2 4 1 Downloading and Uploading Calibration Constants The Tera Term utility called for in these sample programs can be downloaded from hp vector co jp authors VA00241 6 teraterm html These sample programs must be compiled to run from the fast SRAM To do so select Options gt Project Options in Dynamic C then select the Compiler tab and select Code and BIOS in Flash Run in RAM for the BIOS Memory Setting Before you compile and run these sample programs you will also need to connect the RS 232 header at J4 to your PC as shown in the diagram using the serial to DB9 cable Colored supplied in the Development Kit edge DNLOADCALIB C Demonstrates how to retrieve analog calibration data to rewrite it back to the user block using a terminal emulation utility such as Tera Term 29 Start Tera Term or another terminal emulation program JA ooo on your PC and configure the serial parameters as 29 8 follows Baud rate 19 200 bps 8 bits no parity 1 stop bit Enable Local Echo option e Feed options Receive CR Transmit CR LF Now compile and run thi
58. anual RabbitCore RCM4300 User s Manual 18 3 2 Sample Programs Of the many sample programs included with Dynamic C several are specific to the RCM4300 modules These programs will be found in the SAMPLES RCM4300 folder CONTROLLED c Demonstrates use of the digital outputs by having you turn LEDs DS2 and DS3 on the Prototyping Board on or off from the STDIO window on your PC Parallel Port B bit 2 LED DS2 Parallel Port B bit 3 LED DS3 Once you compile and run CONTROLLED C the following display will appear in the Dynamic C STDIO window lt lt Proto board LEDs Hae From PC keyboard Select 22052 or 30053 to toggle LEDs amp Press GQ To Quit gt Press 2 or 3 on your keyboard to select LED DS2 or DS3 on the Prototyping Board Then follow the prompt in the Dynamic C STDIO window to turn the LED ON or OFF A logic low will light up the LED you selected FLASHLED1 C demonstrates the use of assembly language to flash LEDs DS2 and DS3 on the Prototyping Board at different rates Once you have compiled and run this program LEDs DS2 and DS3 will flash on off at different rates FLASHLED2 C demonstrates the use of cofunctions and costatements to flash LEDs DS2 and DS3 on the Prototyping Board at different rates Once you have compiled and run this program LEDs DS2 and DS3 will flash on off at different rates RabbitCore RCM4300 User s Manual 19 e TOGGLESWITCH C demonstrates the use o
59. ar pattern should print out in the STDIO window The program will periodically switch flow control on or off to demonstrate the effect of flow control If you have two Prototyping Boards with modules run this sample program on the sending board then disconnect the programming cable and reset the sending board so that the module is operating in the Run mode Connect TxC TxD and GND on the sending board to RxC RxD and GND on the other board using jumper wires then with the programming cable attached to the other module run the sample program PARITY C This program demonstrates the use of parity modes by repeatedly sending byte values 0 127 from Serial Port C to Serial Port D Rone The program will switch between generating parity or not on Serial UB E Port C Serial Port D will always be checking parity so parity errors should occur during every other sequence To set up the Prototyping Board you will need to tie TxC and RxD together on the RS 232 header at J4 using one of the jumpers supplied in the Development Kit as shown in the diagram The Dynamic C STDIO window will display the error sequence SERDMA C This program demonstrates using DMA to transfer data from a circular buf fer to the serial port and vice versa The Dynamic C STDIO window is used to view or clear the buffer Before you compile and run the sample program you will need to connect the RS 232 header at J4 to your PC as shown in
60. aved to a master processor Real Time Clock Yes Ten 8 bit timers 6 cascadable from the first Timers one 10 bit timer with 2 match registers and one 16 bit timer with 4 outputs and 8 set reset registers Watchdog Supervisor Yes Pulse Width Modulators 4 PWM registers with 10 bit free running counter and priority interrupts Input Capture 2 channel input capture can be used to time input signals from various port pins Quadrature Decoder 2 channel quadrature decoder accepts inputs from external incremental encoder modules Power pins unloaded 3 0 3 6 V DC 350 mA typ 3 3 V 385 mA 3 6 V and 85 C max Operating Temperature 20 C to 85 C Humidity 5 to 95 noncondensing One 2 x 25 1 27 mm pitch IDC signal header Connectors One microSD Card socket One 2 x 5 1 27 mm pitch IDC programming header Board Size 1 84 x 2 85 x 0 84 47 mm x 72 mm x 21 mm RabbitCore RCM4300 User s Manual 91 A 1 1 A D Converter Table A 2 shows some of the important A D converter specifications For more details refer to the ADS7870 data sheet Table A 2 A D Converter Specifications Parameter Test Conditions Typ Max Analog Input Characteristics Input Capacitance 4 9 7 pF Input Impedance Common Mode 6 MO Differential Mode 7 MO Static Accuracy Resolution Single Ended Mode 11 bits Differential Mode 12 bits Integral Linearity
61. be driven low during an interrupt acknowledge cycle 3 t can also serve as a general purpose output once a program has been downloaded and is running The reset pin is an external input that is used to reset the Rabbit 4000 Alternate Uses of the Programming Port AII three Serial Port A signals are available as asynchronous serial port an asynchronous serial port with the clock line usable as a general CMOS I O pin The programming port may also be used as a serial port once the application is running The SMODE pins may then be used as inputs and the status pin may be used as an output Once the application code is running the application must then manage sharing Serial Port A with the programming port for example disconnecting the external serial device during programming and debugging The SMODE and STATUS pins are similarly not available during boot up in order to allow the program to load Refer to the Rabbit 4000 Microprocessor User s Manual for more information RabbitCore RCM4300 User s Manual 38 4 3 Programming Cable The programming cable is used to connect the programming port of the RCM4300 to a PC serial COM port The programming cable converts the RS 232 voltage levels used by the PC serial port to the CMOS voltage levels used by the Rabbit 4000 When the PROG connector on the programming cable is connected to the programming port on the RCM4300 programs can be downloaded and debugged over the serial interf
62. be read with a standard Windows SD Card reader Real time clock e Watchdog supervisor There are two RCM4300 production models Table 1 summarizes their main features Table 1 RCM4300 Features Feature RCM4300 RCM4310 Microprocessor Rabbit 4000 at 58 98 MHz Data SRAM 512K Fast Program Execution SRAM 1MB 512K Serial Flash Memory 2MB IMB program Flash Memory microSD Card microSD Card data storage 128MB 1GB 128MB 1GB A D Converter 12 bits RabbitCore RCM4300 User s Manual 7 Table 1 RCM4300 Features continued Feature RCM4300 RCM4310 Serial Ports 5 shared high speed CMOS compatible ports all 5 configurable as asynchro nous with IrDA 4 as clocked serial SPI and 1 as SDLC HDLC 1 clocked serial port shared with programming port 1 clocked serial port shared with A D converter serial flash and microSD card 6 shared high speed CMOS compatible ports all 6 configurable as asynchro nous with IrDA 4 as clocked serial SPI and 2 as SDLC HDLC e 1 clocked serial port shared with programming port e clocked serial port shared with serial flash and microSD card The RCM4300 is programmed over a standard PC USB port through a programming cable supplied with the Development Kit NOTE The RabbitLink cannot be used to program RabbitCore modules based on the Rabbit 4000 microprocessor Appendix A provide
63. bove sample program will overwrite the existing calibration constants AD CAL CHAN C Demonstrates how to recalibrate one single ended analog input channel with one gain using two known voltages to generate the calibration constants for that channel The constants will be rewritten into the user block data area Connect a positive voltage from 0 20 V DC for example the power supply positive out put to an analog input channel on the Prototyping Board and connect the ground to GND Use a voltmeter to measure the voltage and follow the instructions in the Dynamic C STDIO window once you compile and run this sample program Remember that analog input LN7 on the Prototyping Board is used with the thermistor and is not be used with this sample program NOTE The above sample program will overwrite the existing calibration constants for the selected channel e AD_RDVOLT_ALL C Demonstrates how to read all single ended A D input channels using previously defined calibration constants The constants used to compute equivalent voltages are read from the user block data area so the sample program cannot be run using the Code and BIOS in RAM compiler option Compile and run this sample program once you have connected a positive voltage from 0 20 V DC for example the power supply positive output to analog input channels LNOIN LNOIN on the Prototyping Board and ground to GND Follow the prompts in the Dynamic C STDIO window Raw dat
64. c C User s Manual Since the RCM4300 has a serial flash memory all software development must be done in the static SRAM The flash memory and SRAM options are selected with the Options gt Program Options Compiler menu NOTE An application should be compiled directly to the battery backed data SRAM on the RCM4300 module using the Code and BIOS in RAM BIOS memory compiler option while debugging for faster download times but should be recompiled to run from the fast SRAM after the serial programming cable is disconnected Your final code must always be stored in flash memory for reliable operation RCM4300 modules have a fast program execution SRAM that is not battery backed Select Code and BIOS in Flash Run in RAM from the Dynamic C Options gt Project Options gt Compiler menu to store the code in flash and copy it to the fast program execution SRAM at run time to take advantage of the faster clock speed This option optimizes the performance of RCM4300 modules running at 58 98 MHz Developing software with Dynamic C is simple Users can write compile and test C and assembly code without leaving the Dynamic C development environment Debugging occurs while the application runs on the target Alternatively users can compile a program to an image file for later loading Dynamic C runs on PCs on PCs under Windows NT and later note that Dynamic C is still being evaluated for compatibility with Windows Vista at the time of writing and sho
65. certet EAE 106 RabbitCore RCM4300 User s Manual 4 B 4 Using the Prototyping Board essent nennen nente enin rennen etr en nene 107 B 4 1 Adding Other Components nce teres tre er rearen EE r e i eaii as 109 B 4 2 Measuring Current Draws eorias ade konii ie e Saa o E a iie eeri 109 B 4 3 Analog Features RCM4300 only sese ener enne 110 B 4 3 1 A D Converter Inputs oo eee eter etre Eod epit eto RE ver Fere Hes 110 B 4 3 2 Thermistor Ipods 112 B 4 3 3 A D Converter Calibration vrai ici 112 B 4 4 Serial Communication sesiis E E REEE i e irei 113 BAG RS O iet Pere eda ede ie a oet o ee td e eere tpe 114 B 5 Prototyping Board Jumper Configurations sese 115 Appendix C Power Supply 118 E Power Supplies er IRR HRSG E 118 AA e EO POR ep dr te Pt rere dert eire 118 ox Eurer snc m 119 C13 Reset Gen ra T a 2 ridet re RERO RERO REP ER GER EUH CREE ce E ea da 120 Index 122 Schematics 125 RabbitCore RCM4300 User s Manual 5 1 INTRODUCTION The RCM4300 series of RabbitCore modules is one of the next generation of core modules that take advantage of new Rabbit 4000 features such as hardware DMA clock speeds of up to 60 MHz VO lines shared with up to six serial ports and four levels of alternate pin functions that include variable phase PWM auxiliary I O quadrature decoder and input capture Coupled with more than 500 new opcode instructions that help to
66. d A D converter is set up as a clocked serial port Since this serial port is set up for synchronous serial communication you will lose the peripheral functionality if you try to use the serial port in the asynchronous mode NOTE Since Serial Port B is shared exercise care if you attempt to use Serial Port B for other serial communication Your application will have to manage the sharing negotia tions to avoid conflicts when reading or writing to the devices already using Serial Port B Any conflict with Serial Port B while the RCM4300 is powering up may prevent an application from loading from the serial flash when the RCM4300 powers up or resets Do not drive or load the Serial Port B or SCLKB PC4 PC5 and PBO pins while the RCM4300 is powering up Serial Ports C and D may be used synchronously or asynchronously The IrDA protocol is supported by all six serial ports Serial Ports E and F can also be configured as SDLC HDLC serial ports Serial Ports E and F must be configured before they can be used The sample program IOCONFIG SWITCHECHO C in the Dynamic C SAMPLES RCM4300 SERIAL folder shows how to configure Serial Port F RabbitCore RCM4300 User s Manual 36 Table 3 summarizes the possible parallel port pins for the serial ports and their clocks Remember that the Parallel Port D pins are available only on the RCM4310 Table 3 Rabbit 4000 Serial Port and Clock Pins
67. d indicate that the following IP addresses belong to the local network 216 103 126 0 216 103 126 1 216 103 126 2 etc 216 103 126 254 216 103 126 255 The lowest and highest address are reserved for special purposes The lowest address 216 102 126 0 is used to identify the local network The highest address 216 102 126 255 is used as a broadcast address Usually one other address is used for the address of the gateway out of the network This leaves 256 3 253 available IP addresses for the example given RabbitCore RCM4300 User s Manual 78 6 2 2 How IP Addresses are Used The actual hardware connection via an Ethernet uses Ethernet adapter addresses also called MAC addresses These are 48 bit addresses and are unique for every Ethernet adapter manufactured In order to send a packet to another computer given the IP address of the other computer it is first determined if the packet needs to be sent directly to the other computer or to the gateway In either case there is an Ethernet address on the local network to which the packet must be sent A table is maintained to allow the protocol driver to determine the MAC address corresponding to a particular IP address If the table is empty the MAC address is determined by sending an Ethernet broadcast packet to all devices on the local network asking the device with the desired IP address to answer with its MAC address In this way the table entry can be filled in If no dev
68. d is found p print out the contents of a specified page on the microSD Card r print out the contents of a range of pages on the microSD Card c clear set to zero all of the bytes in a specified page f sets all bytes on the specified page to the given value t write user specified text to a selected page The sample program prints out a single line for a page if all bytes in the page are set to the same value Otherwise it prints a hex ASCII dump of the page This utility works with the microSD Card at its lowest level and writing to pages will likely make the microSD Card unreadable by a PC For PC compatibility you must use the Dynamic C FAT file system module which allows you to work with files on the microSD Card in a way that they will be PC compatible RabbitCore RCM4300 User s Manual 20 3 2 3 Serial Communication The following sample programs are found in the SAMPLES RCM4300 SERIAL folder FLOWCONTROL C This program demonstrates how to configure Serial Port C for CTS RTS flow control with serial data coming from Serial Port D TxD at 115 200 bps The serial data received are displayed in the STDIO window To set up the Prototyping Board you will need to tie TxD and RxD together on the RS 232 header at J4 and you will also tie TxC and ee RxC together using the jumpers supplied in the Development Kit as roo shown in the diagram A repeating triangul
69. dd on Dynamic C modules including the popular uC OS II real time operating system as well as PPP Advanced Encryption Standard AES FAT file system Rabbit Web and other select libraries NOTE Version 2 13 or later of the Dynamic C FAT file system module is required for the RCM4300 modules Each Dynamic C add on module has complete documentation and sample programs to illustrate the functionality of the software calls in the module Visit our Web site at ww w rabbit com for further information and complete documentation for each module In addition to the Web based technical support included at no extra charge a one year telephone based technical support module is also available for purchase RabbitCore RCM4300 User s Manual 73 6 USING THE TCP IP FEATURES 6 1 TCP IP Connections Programming and development can be done with the RCM4300 without connecting the Ethernet port to a network However if you will be running the sample programs that use the Ethernet capability or will be doing Ethernet enabled development you should connect the RCM4300 module s Ethernet port at this time Before proceeding you will need to have the following items If you don t have Ethernet access you will need at least a 10Base T Ethernet card available from your favorite computer supplier installed in a PC Two RJ 45 straight through Ethernet cables and a hub or an RJ 45 crossover Ethernet cable Figure 15 shows how to identify the tw
70. ded or four differential inputs to Serial Port B on the Rabbit 4000 The eight analog input pins LNO LN7 each have an input impedance of 6 7 MQ depending on whether they are used as single ended or differential inputs The input signal can range from 2 V to 2 V differential mode or from 0 V to 2 V single ended mode Use a resistor divider such as the one shown in Figure 10 to measure voltages above 2 V on the analog inputs ADC RCM4300 LN1 3 BVREF ess 1 AGND E RO LNO AAN ANA RO Figure 10 Resistor Divider Network for Analog Inputs The R1 resistors are typically 20 kQ to 100 kQ with a lower resistance leading to more accuracy but at the expense of a higher current draw The RO resistors would then be 180 kQ to 900 kQ for a 10 1 attenuator The capacitor filters noise pulses on the A D converter input The actual voltage range for a signal going to the A D converter input is also affected by the 1 2 4 5 8 10 16 and 20 V V software programmable gains available on each channel of the ADS7870 A D converter Thus you must scale the analog signal with an attenuator circuit and a software programmable gain so that the actual input presented to the A D converter is within the range limits of the ADS7870 A D converter chip 2 V to 2 V or 0 V to 2 V The A D converter chip can only accept positive voltages With the R1 resistors connected to ground your ana
71. drivers on motherboard Figure 5 RCM4300 Subsystems RabbitCore RCM4300 User s Manual 28 4 1 RCM4300 Digital Inputs and Outputs Figure 6 shows the RCM4300 pinouts for header J4 3 3 V IN RESET OUT NOWR VBAT_EXT PA1 PA3 PA5 PA7 PB1 SCLKA PB3 PB5 PB7 PC1 PC3 RxC PC5 RxB n c PC7 RxA PE1 PE3 PE5 SMODEO PE7 STATUS PD1 LN1 PD3 LN3 PD5 LN5 PD7 LN7 VREF GND ORD RESET_IN PAO PA2 PA4 PAG PBO SCLKB n c PB2 PB4 PB6 PCO PC2_TxC PC4_TxB n c PC6_TxA PEO n c PE2 ENET EN PE4 PE6 SMODE1 PDO LNO PD2 LN2 PD4 LN4 PD6 LN6 CONVERT GND n c not connected Note These pinouts are as seen on the Bottom Side of the module Figure 6 RCM4300 Pinout Headers J4 is a standard 2 x 25 IDC header with a nominal 1 27 mm pitch RabbitCore RCM4300 User s Manual 29 Figure 7 shows the use of the Rabbit 4000 microprocessor ports in the RCM4300 modules PAO PA7 PB2 PB7 PDO PD7 RCM4310 only Port B PCO PC2 Port C Port E PEO PE1 Serial Port E 4000 Serial Port F RCM4310 only RES_IN PB1 PC6 STATUS Programming NES PC7 RES Port Mc SMODEO SMODE1 Ara po 11 Timers IRESET OUT PBO PC4 AID Converter NORD Serial Flash miniSD Slavikai IOWR PC5 Serial
72. e Rabbit 4000 chip at these or any other conditions beyond those indicated in this section is not implied Exposure to the absolute maximum rating conditions for extended periods may affect the reliability of the Rabbit 4000 chip Table A 4 outlines the DC characteristics for the Rabbit 4000 at 3 3 V over the recom mended operating temperature range from T4 40 C to 85 C VDDjo 3 0 V to 3 6 V Table A 4 3 3 Volt DC Characteristics Symbol Parameter Min Typ Max I O Ring Supply Voltage 3 3 V 3 0V 33V 3 6 V VDDjo I O Ring Supply Voltage 1 8 V 1 65 V 1 8 V 1 90 V High Level Input Voltage Vin VDD jo 3 3 V 20V Low Level Input Voltage VIL vpp5 33 V 0 8 V High Level Output Voltage Von VDDio 3 3 V ZEV v Low Level Output Voltage 04V OL VDDj9 3 3 V I O Ring Current 29 4912 MHz I IO 13 3 V 25 C eine All other I O I DRIVE except TXD TXDD TXD TXDD di RabbitCore RCM4300 User s Manual 94 A 3 VO Buffer Sourcing and Sinking Limit Unless otherwise specified the Rabbit I O buffers are capable of sourcing and sinking 8 mA of current per pin at full AC switching speed Full AC switching assumes a 29 4 MHz CPU clock with the clock doubler enabled and capacitive loading on address and data lines of less than 70 pF per pin The absolute maximum operating voltage on all I O is 3 6 V A 4 Bus Loading You must pay careful attention to bus l
73. ed for tamper detection 4 6 4 microSD Cards The RCM4300 supports a removable microSD Card up to a 1 GB to store data and Web pages The microSD Card is particularly suitable for mass storage applications but is generally unsuitable for direct program execution Unlike other flash devices the microSD Card has some intelligence which facilitates working with it You do not have to worry about erased pages All microSD Cards sup port 512 byte reads and writes and handle any necessary pre erasing internally Figure 14 shows how to insert or remove the microSD Card The card is designed to fit easily only one way do not bend the card or force it into the slot While you remove or insert the card take care to avoid touching the electrical contacts on the bottom of the card to prevent electrostatic discharge damage to the card and to keep any moisture or other contaminants off the contacts You will sense a soft click once the card is completely inserted To remove it gently press the card towards the middle of the RCM4300 you will sense a soft click and the card will be ready to be removed Do not attempt to pull the card from the socket before pressing it in otherwise the ejection mechanism will get damaged The ejection mechanism is spring loaded and will partially eject the card when used correctly NOTE When using the optional Dynamic C FAT file system module do not remove or insert the microSD M Card while L
74. ennen trennen trees 81 6 4 Running TCP IP Sample Programs eese eerte no conc E E T terere tnnt enne 82 6 4 1 How to Set IP Addresses in the Sample Programs sseeeeeeeeeeeeeeen 83 6 4 2 How to Set Up your Computer for Direct Connect essere nene 84 6 5 Run the PINGME C Sample Program sesesseseseeeee ener nennen retenti eerte ene 85 6 6 Running Additional Sample Programs With Direct Connect 85 6 7 Where Do I Go From Here ini eee oa io chier subsea doch sable vere b qe dde iia 86 Appendix A RCM4300 Specifications 87 A 1 Electrical and Mechanical Characteristics cessescececcessecesceceneecseeseeeeecesaeeenceceeeeneceeecsaeeeneceaeers 88 ACT lL A D Converter ue ERI DRE 92 LN MEI M cesveustontantess 93 A 2 Rabbit 4000 DC Characteristics e nennen nnne ron nennen tenter ettet en rese nennen nne 94 A 3 I O Buffer Sourcing and Sinking Limit eeseeseseeeseeeeeeer ener enne entree 95 AA BusiLoading a 95 AS Jumper ConfiBUratlons 51cm re eee ente id 98 A 6 Conformal Coating oe e ete erre ree ete oreet de S 100 Appendix B Prototyping Board 101 B CIntfod CtioTE 3 soe e qe ee c P RU e UE RU Up S 102 B 1 1 Prototyping Board Features iieiaeie orri eei a ener emen EE es EE trennen 103 B 2 Mechanical Dimensions and LayOUt ooooonnoccnoccnoncconnanonononononnncnnnconnnonnncnnncnnnnron nano non nennen enne enne 105 B 3 PowerSupply ii ii ege etre
75. er chip 92 bus loading 95 digital I O buffer sourcing and sinking limits 95 dimensions 88 electrical mechanical and en vironmental 90 exclusion zone 89 header footprint 93 headers sseeess 93 Prototyping Board 106 Rabbit 4000 DC characteris CICS RO 94 Rabbit 4000 timing diagram 96 relative pin 1 locations 93 spectrum spreader 97 SENES sro eR 44 subsystems digital inputs and outputs 29 switching modes 39 T tamper detection 20 45 TCP IP primer 76 technical support 17 U user block determining size 52 function calls 52 readUserBlock 45 writeUserBlock 45 reserved area for calibration constants sesssesse 32 V VBAT RAM memory 20 45 RabbitCore RCM4300 User s Manual SCHEMATICS 090 0229 RCM4300 Schematic www rabbit com documentation schemat 090 0229 pdf 090 0230 Prototyping Board Schematic www rabbit com documentation schemat 090 0230 pdf 090 0252 USB Programming Cable Schematic www rabbit com documentation schemat 090 0252 pdf You may use the URL information provided above to access the latest schematics directly RabbitCore RCM4300 User s
76. er on the RS 232 header at J4 and you will also tie TxC and Ra RxC together using the jumpers supplied in the Development Kit as aloo shown in the diagram Once you have compiled and run this program you can test flow con trol by disconnecting the TxC jumper from RxC while the program is running Charac ters will no longer appear in the STDIO window and will display again once TxC is connected back to RxC If you have two Prototyping Boards with modules run this sample program on the sending board then disconnect the programming cable and reset the sending board so that the module is operating in the Run mode Connect TxC TxD and GND on the sending board to RxC RxD and GND on the other board using jumper wires then with the programming cable attached to the other module run the sample program Once you have compiled and run this program you can test flow control by disconnect ing TxC from RxC as before while the program is running Since the J4 header locations on the two Prototyping Boards are connected with wires there are no slip on jumpers at J4 on either Prototyping Board e SWITCHCHAR C This program demonstrates transmitting and then receiving an ASCII string on Serial Ports C and D It also displays the serial data received from both ports in the STDIO window To set up the Prototyping Board you will need to tie TxD and RxC together on the RS 232 header at J4 and you will also tie RxD and LR TxC together usi
77. es start Dynamic C by double clicking on the Dynamic C icon on your desktop or in your Start menu Select Code and BIOS in RAM on the Compiler tab in the Dynamic C Options gt Project Options menu Then click on the Communications tab and verify that Use USB to Serial Converter is selected to support the USB programming cable Click OK NOTE The Code and BIOS in RAM BIOS memory compiler option is recommended while debugging for faster download times Remember to recompile the working appli cation using the Code and BIOS in Flash Run in RAM option once you are ready to use the RCM4300 in a standalone installation Determine which COM port was assigned to the USB programming cable on your PC Open Control Panel gt System gt Hardware gt Device Manager gt Ports and identify which COM port is used for the USB connection In Dynamic C select Options Project Options then select this COM port on the Communications tab then click OK You may type the COM port number followed by Enter on your computer keyboard if the COM port number is outside the range on the dropdown menu Use the File menu to open the sample program PONG C which is in the Dynamic C SAMPLES folder Press function key F9 to compile and run the program The STDIO window will open on your PC and will display a small square bouncing around in a box This program shows that the CPU is working The sample program described in Section 6 5 Run the PINGME C Sample Pr
78. f Direct Mode bit D7 is not set PARAMETERS cmd contains a gain code and a channel code as follows D7 1 D6 D4 Gain Code D3 D0 Channel Code Use the following calculation and the tables below to determine cmd cmd 0x80 gain code 16 channel code Gain Code Actual Gain 0 1 1 1 8 2 3 6 3 4 5 4 7 2 5 9 0 6 14 4 7 18 RabbitCore RCM4300 User s Manual 58 anaInDriver continued Channel Code E ae Channel Code eee ee 0 AINO AINI 8 AINO AINO 1 AIN2 AIN3 9 AIN1 AIN1 2 AIN4 AINS 10 AIN2 AIN2 31 AIN6 AIN7 11 AIN3 AIN3 4 AINO AIN1 12 AIN4 AIN4 5 AIN2 AIN3 13 AIN5 AIN5 6 AIN4 AIN5 14 AIN6 AIN6 T AIN6 AIN7 15 AINT AIN7 Negative input is ground T Not accessible on Prototyping Board t Not accessible on Prototyping Board RETURN VALUE A value corresponding to the voltage on the analog input channel 0 2047 for 11 bit conversions 2048 2047 for 12 bit conversions ADSPIBUSY 4094 if the A D converter is locked out or if the SPI port is in use if more than SPI MAXTIME milliseconds elapse since the last attempt to grab the port semaphore by the A D converter a fatal runtime error ETIME results ADTIMEOUT 4095 if the conversion is incomplete or busy bit timeout ADOVERFLOW 4096 for overflow or out of range SEE ALSO analInConfig analn brdInit RabbitCore RCM4300 User s Man
79. f costatements to detect switch presses using the press and release method of debouncing LEDs DS2 and DS3 on the Proto typing Board are turned on and off when you press switches S2 and S3 S2 and S3 are controlled by PB4 and PB5 respectively Once you have loaded and executed these five programs and have an understanding of how Dynamic C and the RCM4300 modules interact you can move on and try the other sample programs or begin building your own 3 2 1 Tamper Detection The tamper detection feature of the Rabbit 4000 microprocessor can be used to detect any attempt to enter the bootstrap mode When such an attempt is detected the VBAT RAM memory on the Rabbit 4000 chip is erased The serial bootloader on RCM4300 Rab bitCore modules uses the bootstrap mode to load the SRAM which erases the VBAT RAM memory on any reset and so it cannot be used for tamper detection Therefore no tamper detection sample program is available for RCM4300 RabbitCore modules 3 2 2 Use of microSD Cards The following sample program can be found in the SAMPLESNVRCM4300NSD Flash folder SDFLASH_INSPECT c This program is a utility for inspecting the contents of a microSD Card It provides examples of both reading and writing pages or sectors to the microSD M Card When the sample program starts running it attempts to initialize the microSD Card on Serial Port B The following five commands are displayed in the Dynamic C STDIO window if a microSD Car
80. he Communications tab in the Dynamic C Options gt Project Options menu Choose a lower debug baud rate Click OK to save Press lt Ctrl Y gt to force Dynamic C to recompile the BIOS You should receive a Bios compiled successfully message once this step is completed successfully 2 4 Where Do Go From Here If the sample program ran fine you are now ready to go on to the sample programs in Chapter 3 and to develop your own applications The sample programs can be easily modi fied for your own use The user s manual also provides complete hardware reference infor mation and software function calls for the RCM4300 series of modules and the Prototyping Board For advanced development topics refer to the Dynamic C User s Manual also in the online documentation set 2 4 1 Technical Support NOTE If you purchased your RCM4300 through a distributor or through a Rabbit Semiconductor partner contact the distributor or partner first for technical support If there are any problems at this point Use the Dynamic C Help menu to get further assistance with Dynamic C Check the Rabbit Semiconductor Technical Bulletin Board and forums at www rabbit com support bb and at www rabbit com forums Use the Technical Support e mail form at www rabbit com support RabbitCore RCM4300 User s Manual 17 3 RUNNING SAMPLE PROGRAMS To develop and debug programs for the RCM4300 and for all other Rabbit Semiconductor hardware yo
81. he last attempt to grab the port semaphore by the A D converter a fatal runtime error ETIME results ADTIMEOUT 4095 if the conversion is incomplete or busy bit timeout ADOVERFLOW 4096 for overflow or out of range SEE ALSO analn anaInConfig anaInDriver RabbitCore RCM4300 User s Manual 61 anaInCalib int anaInCalib int channel int opmode int gaincode int valuel float voltsl int value2 float volts2 DESCRIPTION Calibrates the response of the desired A D converter channel as a linear function using the two conversion points provided Four values are calculated and placed into global tables adcCalibS adcCalibD and adcCalibM to be later stored into simulat ed EEPROM using the function anaInEEWr Each channel will have a linear con stant and a voltage offset PARAMETERS channel the channel number 0 to 7 corresponding to LNO to LN7 opmode the mode of operation SINGLE single ended input DIFF differential input mAMP 4 20 mA input channel SINGLE DIFF mAMP 0 AINO AINO AIN1 AINO 1 AIN1 AIN1 AINO AIN1 2 AIN2 AIN2 AIN3 AIN2 3 AIN3 AIN3 AIN2 AIN3 4 AIN4 AIN4 AINS AIN4 5 AIN5 AINS AIN4 AIN5 6 AIN6 AIN6 AIN7 AIN6 7 AIN7 AIN7 AIN6 AIN7 Not accessible on Prototyping Board RabbitCore RCM4300 User s Manual 62 gaincode valuel voltsl value2 volts2 RETURN VALUE 0 if successful ana
82. ic controller running a Web page Two device LEDs are created along with two buttons to toggle them Users can use their Web browser to change the state of the lights The DS2 and DS3 LEDs on the Pro totyping Board will match those on the Web page As long as you have not modified the TCPCONFIG 1 macro in the sample program enter the following server address in your Web browser to bring up the Web page served by the sample program http 10 10 6 100 Otherwise use the TCP IP settings you entered in the TCP_CONFIG LIB library PINGLED C This program demonstrates ICMP by pinging a remote host It will flash LEDs DS2 and DS3 on the Prototyping Board when a ping is sent and received e SMTP C This program demonstrates using the SMTP library to send an e mail when the S2 and S3 switches on the Prototyping Board are pressed LEDs DS2 and DS3 on the Prototyping Board will light up when e mail is being sent RabbitCore RCM4300 User s Manual 85 6 7 Where Do Go From Here NOTE If you purchased your RCM4300 through a distributor or through a Rabbit Semi conductor partner contact the distributor or partner first for technical support If there are any problems at this point Use the Dynamic C Help menu to get further assistance with Dynamic C Check the Rabbit Semiconductor Technical Bulletin Board and forums at www rabbit com support bb and at www rabbit com forums Use the Technical Support e mail form at www rabbit
83. ice answers then the device is nonexistent or inoperative and the packet cannot be sent Some IP address ranges are reserved for use on internal networks and can be allocated freely as long as no two internal hosts have the same IP address These internal IP addresses are not routed to the Internet and any internal hosts using one of these reserved IP addresses cannot communicate on the external Internet without being connected to a host that has a valid Internet IP address The host would either translate the data or it would act as a proxy Each RCM4300 RabbitCore module has its own unique MAC address which consists of the prefix 0090C2 followed by a code that is unique to each RCM4300 module For exam ple a MAC address might be 0090C2C002C0 TIP You can always obtain the MAC address on your module by running the sample program DISPLAY MAC C from the SAMPLES TCPIP folder RabbitCore RCM4300 User s Manual 79 6 2 3 Dynamically Assigned Internet Addresses In many instances devices on a network do not have fixed IP addresses This is the case when for example you are assigned an IP address dynamically by your dial up Internet service provider ISP or when you have a device that provides your IP addresses using the Dynamic Host Configuration Protocol DHCP The RCM4300 modules can use such IP addresses to send and receive packets on the Internet but you must take into account that this IP address may only be valid for the durat
84. ion of the call or for a period of time and could be a private IP address that is not directly accessible to others on the Internet These addresses can be used to perform some Internet tasks such as sending e mail or browsing the Web but it is more difficult to participate in conversations that originate elsewhere on the Internet If you want to find out this dynamically assigned IP address under Windows NT or later you can run the ipconfig command Start gt Run gt cmd while you are connected and look at the interface used to connect to the Internet Many networks use IP addresses that are assigned using DHCP When your computer comes up and periodically after that it requests its networking information from a DHCP server The DHCP server may try to give you the same address each time but a fixed IP address is usually not guaranteed If you are not concerned about accessing the RCM4300 from the Internet you can place the RCM4300 on the internal network using an IP address assigned either statically or through DHCP RabbitCore RCM4300 User s Manual 80 6 3 Placing Your Device on the Network In many corporate settings users are isolated from the Internet by a firewall and or a proxy server These devices attempt to secure the company from unauthorized network traffic and usually work by disallowing traffic that did not originate from inside the net work If you want users on the Internet to communicate with your RCM4300 you have
85. ithout modifying the RCM4300 module The Prototyping Board is shown below in Figure B 1 with its main features identified Current Measurement Headers Power Backup 5 V 3 3 V and Input Battery GND Buses Power RCM4300 Module Connector Header P x Through Hole RCM4300 OO Prototyping Area xo Standoff O 00000000009990 SMT Prototyping Mounting Area SMT Prototyping Area RCM4300 Module User Extension Header Switches Figure B 1 Prototyping Board RabbitCore RCM4300 User s Manual 102 B 1 1 Prototyping Board Features Power Connection A a 3 pin header is provided for connection to the power supply Note that the 3 pin header is symmetrical with both outer pins connected to ground and the center pin connected to the raw V input The cable of the AC adapter provided with the North American version of the Development Kit is terminated with a header plug that connects to the 3 pin header in either orientation The header plug leading to bare leads provided for overseas customers can be connected to the 3 pin header in either orientation Users providing their own power supply should ensure that it delivers 8 24 V DC at 8 W The voltage regulators will get warm while in use Regulated Power Supply The raw DC vo
86. ks whether or not the ID user blocks are mir rored the total amount of flash memory used by the ID and user blocks and the area of the user block available for your application The USERBLOCK CLEAR C sample program shows you how to clear and write the con tents of the user block that you are using in your application the calibration constants in the reserved area and the ID block are protected NOTE Since RCM4300 RabbitCore modules have a serial boot flash that shares the serial flash SPI lines with other devices exercise care when accessing the user block Pay attention to the instructions associated with the user block function calls in the Dynamic C LIB Rabbit4000 BIOSLIB IDBLOCK LIB library 5 2 5 SRAM Use The RCM4300 module has a battery backed data SRAM and a program execution SRAM Dynamic C provides the protected keyword to identify variables that are to be placed into the battery backed SRAM The compiler generates code that maintains two copies of each protected variable in the battery backed SRAM The compiler also generates aflag to indicate which copy of the protected variable is valid at the current time This flag is also stored in the battery backed SRAM When a protected variable is updated the inactive copy is modified and is made active only when the update is 10096 complete This assures the integrity of the data in case a reset or a power failure occurs during the update process At power on the application progr
87. log circuit is well suited to perform positive A D conversions When the R1 resistors are tied to ground for differential measurements both differential inputs must be referenced to analog ground and both inputs must be positive with respect to analog ground RabbitCore RCM4300 User s Manual 41 If a device such as a battery is connected across two channels for a differential measurement and it is not referenced to analog ground then the current from the device will flow through both sets of attenuator resistors without flowing back to analog ground as shown in Figure 11 This will generate a negative voltage at one of the Figure 11 Current Flow from Ungrounded or Floating Source inputs LN1 which will almost certainly lead to inaccurate A D conversions To make such differential measurements connect the R1 resistors to the A D converter s internal reference voltage which is software configurable for 1 15 V 2 048 V or 2 5 V This internal reference voltage is available on pin 49 of header J3 as VREF and allows you to convert analog input voltages that are negative with respect to analog ground NOTE The amplifier inside the A D converter s internal voltage reference circuit has a very limited output current capability The internal buffer can source up to 20 mA and sink only up to 200 uA Use a separate buffer amplifier if you need to supply any load current The A D converter s CONVERT pin is av
88. ltage provided at the 3 pin header is routed to a 5 V switching voltage regulator then to a separate 3 3 V linear regulator The regulators provide stable power to the RCM4300 module and the Prototyping Board Power LED The power LED lights whenever power is connected to the Prototyping Board Reset Switch A momentary contact normally open switch is connected directly to the RCM4300 s RESET IN pin Pressing the switch forces a hardware reset of the system I O Switches and LEDs Two momentary contact normally open switches are con nected to the PB4 and PBS pins of the RCM4300 module and may be read as inputs by sample applications Two LEDs are connected to the PB2 and PB3 pins of the RCM4300 module and may be driven as output indicators by sample applications Prototyping Area A generous prototyping area has been provided for the installation of through hole components 3 3 V 5 V and Ground buses run around the edge of this area Several areas for surface mount devices are also available Note that there are SMT device pads on both top and bottom of the Prototyping Board Each SMT pad is connected to a hole designed to accept a 30 AWG solid wire Module Extension Header The complete pin set of the RCM4300 module is duplicated at header J2 Developers can solder wires directly into the appropriate holes or for more flexible development a 2 x 25 header strip with a 0 1 pitch can be sol dered into place See Figure B
89. m in the docs folder found in the Dynamic C installation folder The latest versions of all documents are always available for free unregistered download from our Web sites as well RabbitCore RCM4300 User s Manual 10 2 GETTING STARTED This chapter describes the RCM4300 hardware in more detail and explains how to set up and use the accompanying Prototyping Board NOTE This chapter and this manual assume that you have the RCM4300 Development Kit If you purchased an RCM4300 module by itself you will have to adapt the infor mation in this chapter and elsewhere to your test and development setup 2 1 Install Dynamic C To develop and debug programs for the RCM4300 series of modules and for all other Rabbit Semiconductor hardware you must install and use Dynamic C If you have not yet installed Dynamic C version 10 21 or a later version do so now by inserting the Dynamic C CD from the Development Kit in your PC s CD ROM drive If autorun is enabled the CD installation will begin automatically If autorun is disabled or the installation does not start use the Windows Start Run menu or Windows Disk Explorer to launch setup exe from the root folder of the CD ROM The installation program will guide you through the installation process Most steps of the process are self explanatory Once your installation is complete you will have up to three new icons on your PC desk top One icon is for Dynamic C another opens
90. m reset generator 4 IORD External read strobe 5 IOWR _ External write strobe 6 RESET_IN Input to reset generator 8 15 PAO PA7 Output pulled low 16 PBO CLKB shared by serial flash microSD Card and A D converter if equipped 17 PBI Programming port CLKA 18 PB2 LED DS2 normally high off 19 PB3 LED DS3 normally high off 20 PB4 Switch S2 normally open pulled up 21 PB5 Switch S3 normally open pulled up 22 23 PB6 PB7 Output pulled high 24 25 PCO PCI Serial Port D RS 232 header J4 high 26 27 PC2 PC3 Serial Port C high 28 29 POCPCS AAD on aa Tae o 30 31 PC6 PC7 Serial Port A programming port high 32 33 PEO PE1 Output high 34 PE2 Not brought out to Prototyping Board 35 39 PE3 PE7 Output high 40 47 LNO LN7 A D converter inputs RCM4300 only 48 CONVERT A D converter CONVERT input RCM4300 only 49 VREF A D converter reference voltage RCM4300 only 50 AGND A D converter ground RCM4300 only PDO PD7 output high are available on these pins for the RCM4310 There is a 1 3 x 2 through hole prototyping space available on the Prototyping Board The holes in the prototyping area are spaced at 0 1 2 5 mm 3 3 V 5 V and GND traces run along the top edge of the prototyping area for easy access Small to medium circuits can be prototyped using point to point wiring with 20 to 30 AWG wire between the proto typing area the 3 3 V 5 V and GND traces and the surrounding area
91. nConfig unsigned int anaInConfig unsigned int instructionbyte unsigned int cmd long brate DESCRIPTION Use this function to configure the A D converter This function will address the A D converter chip in Register Mode only and will return an error if you try the Direct Mode Appendix B 4 3 provides additional addressing and command information ADS7870 Signal ADS7870 State RCM4300 Function State LNO Input AINO LNI Input AINI LN2 Input AIN2 LN3 Input AIN3 LN4 Input AIN4 LN5 Input AINS LN6 Input AIN6 LN7 Input AIN7 RESET Input Board reset device RISE FALL Input Pulled up for SCLK active on rising edge 1 00 Input Pulled down I O1 Input Pulled down 1 02 Input Pulled down 1 03 Input Pulled down CONVERT Input Pulled down when not driven BUSY Output PEO pulled down logic high state converter is busy CCLKCNTRL Input Pulled down 0 state sets CCLK as input CCLK Input Pulled down external conversion clock SCLK Input PBO serial data transfer clock SDI Input PC4 3 wire mode for serial data input SDO Output PCS serial data output CS driven ICS Input BUFEN pulled up active low enables serial interface BUFIN Input Driven by VREF VREF Output Connected to BUFIN and BUFOUT BUFOUT Output Driven by VREF RabbitCore RCM4300 User s Manual 56 anaInConfig continued PARAMETERS instructionbyte the instruction byte that will i
92. ncorporated into an assembly that includes other printed circuit boards An exclusion zone of 0 08 2 mm is recom mended below the RCM4300 when the RCM4300 is plugged into another assembly Figure A 2 shows this exclusion zone Exclusion Zone Figure A 2 RCM4300 Exclusion Zone NOTE All measurements are in inches followed by millimeters enclosed in parentheses RabbitCore RCM4300 User s Manual 89 Table A 1 lists the electrical mechanical and environmental specifications for the RCM4300 Table A 1 RabbitCore RCM4300 Specifications Parameter RCM4300 RCM4310 Microprocessor Rabbit 4000 at 58 98 MHz EMI Reduction Spectrum spreader for reduced EMI radiated emissions Ethernet Port 10 100Base T RJ 45 3 LEDs Data SRAM 512K 8 bit Program Execution Fast SRAM 1MB 8 bit 512K 8 bit Serial Flash Memory program 2MB 1MB Memory microSD Card microSD Card data storage 128MB 1GB 128MB 1GB LED Indicators LINK ACT link activity FDX COL full duplex collisions SPEED on for 100Base T Ethernet connection SD microSD mounted status Backup Battery Connection for user supplied backup battery to support RTC and data SRAM General Purpose I O 28 parallel digital I O lines 36 parallel digital I O lines e configurable with four configurable with four layers of alternate layers of alternate functions functio
93. ng the jumpers supplied in the Development Kit as n LE El shown in the diagram Once you have compiled and run this program press and release switches S2 and S3 on the Prototyping Board The data sent between the serial ports will be displayed in the STDIO window RabbitCore RCM4300 User s Manual 22 IOCONFIG_SWITCHECHO C This program demonstrates how to set up Serial Port E which then transmits and then receives an ASCII string when switch S2 is pressed The echoed serial data are displayed in the Dynamic C STDIO window Note that the I O lines that carry the Serial Port E signals are not the Rabbit 4000 defaults The Serial Port E I O lines are configured by calling the library function serEconfig that was generated by the Rabbit 4000 IOCONFIG EXE utility program Serial Port E is configured to use Parallel Port E bits PD6 and PD7 These signals are available on the Prototyping Board s Module Extension Header header J2 Serial Port D is left in its default configuration using Parallel Port C bits PCO and PC1 These signals are available on the Prototyping Board s RS 232 connector header J4 Serial Port D transmits and then receives an ASCII string when switch S3 is pressed Also note that there is one library generated by IOCONFIG EXE in the Dynamic C SAMPLES RCM4300 SERIAL folder for the 22 MHz RCM4210 To set up the Prototyping Board you will need to tie TxD and RxD together on the RS 232 header at J
94. nical Note TN235 External 32 768 kHz Oscillator Circuits provides additional information about the current draw by the real time clock oscillator circuit C 1 2 Battery Backup Circuit Figure C 2 shows the battery backup circuit External Battery D2 R54 VBAT EXT gt Figure C 2 RCM4300 Backup Battery Circuit The battery backup circuit serves three purposes t reduces the battery voltage to the SRAM and to the real time clock thereby limiting the current consumed by the real time clock and lengthening the battery life e It ensures that current can flow only out of the battery to prevent charging the battery e A voltage VOSC is supplied to U14 which keeps the 32 768 kHz oscillator working when the voltage begins to drop RabbitCore RCM4300 User s Manual 119 C 1 3 Reset Generator The RCM4300 uses a reset generator to reset the Rabbit 4000 microprocessor when the volt age drops below the voltage necessary for reliable operation The reset occurs between 2 85 V and 3 00 V typically 2 93 V Since the RCM4300 will operate at voltages as low as 3 0 V exercise care when operating close to the 3 0 V minimum voltage for example keep the power supply as close as possible to the RCM4300 since your RCM4300 could reset unintentionally The RCM4300 has a reset output pin 3 on header J2 RabbitCore RCM4300 User s Manual 120 A cloning seen 53 E compiler options 16 47 A
95. nitiate a read or write operation at 8 or 16 bits on the designated register address For example checkid anaInConfig 0x5F 0 9600 read ID and set baud rate cmd the command data that configure the registers addressed by the in struction byte Enter 0 if you are performing a read operation For example i analnConfig 0x07 Ox3b 0 write ref osc reg and enable brate the serial clock transfer rate of 9600 to 115 200 bytes per second brate must be set the first time this function is called Enter 0 for this parameter thereafter for example anaInConfig 0x00 0x00 9600 resets device and sets byte rate RETURN VALUE 0 on write operations data value on read operations ADSPIBUSY 4094 if the SPI port is already in use if more than SPI MAXTIME milliseconds elapse since the last attempt to grab the port semaphore by the A D converter a fatal runtime error ETIME results SEE ALSO analInDriver anaIn brdInit RabbitCore RCM4300 User s Manual 57 analInDriver int anaInDriver unsigned int cmd DESCRIPTION Reads the voltage of an analog input channel by serial clocking an 8 bit command to the A D converter by its Direct Mode method This function assumes that Model most significant byte first and the A D converter oscillator have been enabled See anaIn Config for the setup The conversion begins immediately after the last data bit has been transferred An ex ception error will occur i
96. ns Additional Inputs 2 startup mode reset in CONVERT 2 startup mode reset in Additional Outputs Status reset out analog VREF Status reset out Analog Inputs A D Converter Resolution A D Conversion Time including 120 us raw count 8 channels single ended or 4 channels differential Programmable gain 1 2 4 5 8 10 16 and 20 V V 12 bits 11 bits single ended 180 us Auxiliary I O Bus Can be configured for 8 data lines and 5 address lines shared with parallel I O lines plus I O read write RabbitCore RCM4300 User s Manual 90 Table A 1 RabbitCore RCM4300 Specifications continued Parameter RCM4300 RCM4310 Serial Ports 5 shared high speed CMOS compatible ports e all 5 configurable as asyn chronous with IrDA 4 as clocked serial SPI and 1 as SDLC HDLC e clocked serial port shared with programming port e clocked serial port shared with A D converter serial flash and microSD card 6 shared high speed CMOS compatible ports e all 6 configurable as asyn chronous with IrDA 4 as clocked serial SPI and 2 as SDLC HDLC e clocked serial port shared with programming port e clocked serial port shared with serial flash and microSD card Serial Rate Maximum asynchronous baud rate CLK 8 Slave Interface Slave port allows the RCM4300 to be used as an intelligent peripheral device sl
97. o Ethernet cables based on the wires in the trans parent RJ 45 connectors Same Different color order color order in connectors in connectors Straight Through Crossover Cable Cable Figure 15 How to Identify Straight Through and Crossover Ethernet Cables Ethernet cables and a 10Base T Ethernet hub are available from Rabbit Semiconductor in a TCP IP tool kit More information is available at www rabbit com Now you should be able to make your connections RabbitCore RCM4300 User s Manual 74 1 Connect the AC adapter and the serial programming cable as shown in Chapter 2 Get ting Started 2 Ethernet Connections There are four options for connecting the RCM4300 module to a network for develop ment and runtime purposes The first two options permit total freedom of action in selecting network addresses and use of the network as no action can interfere with other users We recommend one of these options for initial development NoLAN The simplest alternative for desktop development Connect the RCM4300 module s Ethernet port directly to the PC s network interface card using an RJ 45 crossover cable A crossover cable is a special cable that flips some connections between the two connectors and permits direct connection of two client systems A standard RJ 45 network cable will not work for this purpose Micro LAN Another simple alternative for desktop development Use a small Ethernet 10Ba
98. oading when designing an interface to the RCM4300 This section provides bus loading information for external devices Table A 5 lists the capacitance for the various RCM4300 I O ports Table A 5 Capacitance of Rabbit 4000 I O Ports Input Output 1 0 Ports Capacitance Capacitance pF pF Parallel Ports A to E 12 14 Table A 6 lists the external capacitive bus loading for the various RCM4300 output ports Be sure to add the loads for the devices you are using in your custom system and verify that they do not exceed the values in Table A 6 Table A 6 External Capacitive Bus Loading 40 C to 85 C Output Port Clock Speed Maximum External E MHz Capacitive Loading pF All I O lines with clock doubler enabled 58 98 100 RabbitCore RCM4300 User s Manual 95 Figure A 4 shows a typical timing diagram for the Rabbit 4000 microprocessor external I O read and write cycles External I O Read no extra wait states k T1 gt lt Tw gt lt T2 gt ak Ll LI LI A 15 0 57 Tadr Cok of OC T EE 0 gt Tosx Tesx 7 NOC E Tlocsx Tiocsx 7 NORD TioRD TioRDI 7 BUFEN BUFEN iBUFEN 7 setup D 7 0 holdi gt External I O Write no extra wait states le T1 gt lt Tw gt lt T2 gt TEREGA A 15 0 BEES Tadr Self F F w Ns 1 Tosx Tesx lt NOCSx X LL LL LO Tlocsx Tiocsx IOWR BUFEN TBUFEN TBUFEN D 7 0
99. oard 5 V switching power regulator from which a 3 3 V linear regulator draws its supply Thus both 5 V and 43 3 V are available on the Prototyping Board The Prototyping Board itself is protected against reverse polarity by a Shottky diode at D2 as shown in Figure B 3 LINEAR POWER REGULATOR 3 3 V J SWITCHING POWER REGULATOR PU nc 1 LM1117 ljJP2 a D2 JP1 zz Pt s PEN U2 a ui B4 Q 34 Di403 cS fYY ce ca i ee 47 pF 330 uH 330 pF 10 uF 10 pF Uu LM2575 ls D M a a de B140 Figure B 3 Prototyping Board Power Supply RabbitCore RCM4300 User s Manual 106 B 4 Using the Prototyping Board The Prototyping Board is actually both a demonstration board and a prototyping board As a demonstration board it can be used to demonstrate the functionality of the RCM4300 right out of the box without any modifications to either board The Prototyping Board comes with the basic components necessary to demonstrate the operation of the RCM4300 Two LEDs DS2 and DS3 are connected to PB2 and PB3 and two switches S2 and S3 are connected to PB4 and PB5 to demonstrate the interface to the Rabbit 4000 microprocessor Reset switch S1 is the hardware reset for the RCM4300 The Prototyping Board provides the user with RCM4300 connection points brought out con veniently to labeled points at header J2 on the Prot
100. ogram tests the TCP IP portion of the board 2 3 1 Troubleshooting If you receive the message No Rabbit Processor Detected the programming cable may be connected to the wrong COM port a connection may be faulty or the target system may not be powered up First check to see that the power LED on the Prototyping Board is lit If the LED is lit check both ends of the programming cable to ensure that it is firmly plugged into the PC and the programming header on the RCM4300 with the marked colored edge of the programming cable towards pin 1 of the programming header Ensure that the module is firmly and correctly installed in its connectors on the Prototyping Board If Dynamic C appears to compile the BIOS successfully but you then receive a communi cation error message when you compile and load a sample program it is possible that your PC cannot handle the higher program loading baud rate Try changing the maximum download rate to a slower baud rate as follows Locate the Serial Options dialog on the Communications tab in the Dynamic C Options Project Options menu Select a slower Max download baud rate Click OK to save If a program compiles and loads but then loses target communication before you can begin debugging it is possible that your PC cannot handle the default debugging baud rate Try lowering the debugging baud rate as follows RabbitCore RCM4300 User s Manual 16 Locate the Serial Options dialog on t
101. otyping Board Although header J2 is unstuffed a 2 x 25 header is included in the bag of parts RS 232 signals Serial Ports C and D are available on header J4 A header strip at J4 allows you to connect a ribbon cable and a ribbon cable to DB9 connector is included with the Development Kit The pinouts for these locations are shown in Figure B 4 J4 M TxD RxC RxD TxC RS 232 GND RCM4300 Signals AGND LN6IN OO LNSIN LN4IN OQ LN3IN LN2IN OQ LN1IN Q LNOIN Analog Inputs Figure B 4 Prototyping Board Pinout The analog signals are brought out to labeled points at header location J3 on the Prototyping Board Although header J3 is unstuffed a 2 x 7 header can be added Note that analog signals are only available from the RCM4300 included in the Development Kit the RCM4210 model does not have an A D converter RabbitCore RCM4300 User s Manual 107 All signals from the RCM4300 module are available on header J2 of the Prototyping Board The remaining ports on the Rabbit 4000 microprocessor are used for RS 232 serial communication Table B 2 lists the signals on header J2 and explains how they are used on the Prototyping Board Table B 2 Use of RCM4300 Signals on the Prototyping Board Pin Pin Name Prototyping Board Use 1 43 3 V 3 3 V power supply 2 GND 3 RST OUT Reset output fro
102. ping Board Gain Code Actual Gain SRST ange 0 1 22 5 422 5 1 1 8 11 25 11 25 2 3 6 5 6 45 6 3 4 5 4 5 4 5 4 7 2 2 8 42 8 5 9 0 2 25 42 25 6 14 4 1 41 1 41 7 18 1 126 1 126 RabbitCore RCM4300 User s Manual 66 anaInDiff continued RETURN VALUE A voltage value corresponding to the voltage differential on the analog input channel ADSPIBUSY 4094 if the A D converter is locked out or if the SPI port is in use if more than SPI MAXTIME milliseconds elapse since the last attempt to grab the port semaphore by the A D converter a fatal runtime error ETIME results ADTIMEOUT 4095 if the conversion is incomplete or busy bit timeout ADOVERFLOW 4096 for overflow or out of range SEE ALSO analInCalib anaIn anaInmAmps brdInit RabbitCore RCM4300 User s Manual 67 anaInmAmps float anaInmAmps unsigned int channel DESCRIPTION Reads the state of an analog input channel and uses the previously set calibration con stants to convert it to current PARAMETERS channel the channel number 0 to 7 corresponding to LNO to LN7 Channel Code VIRUS 0 AINO 1 AIN1 2 AIN2 3 A IN3 4 AIN4 5 AINS 6 AIN6 7 AIN7 Negative input is ground T Applies to Prototyping Board RETURN VALUE A current value between 4 00 and 20 00 mA corresponding to the current on the analog input channel
103. programming port to download and debug programs Serial Port A is also used for the following operations e Cold boot the Rabbit 4000 on the RCM4300 after a reset e Fast copy designated portions of flash memory from one Rabbit based board the master to another the slave using the Rabbit Cloning Board In addition to Serial Port A the Rabbit 4000 startup mode SMODEO SMODEI STATUS and reset pins are available on the programming port The two startup mode pins determine what happens after a reset the Rabbit 4000 powers up in the asynchronous serial bootstrap triplet mode with the programming cable attached and in the clocked serial bootstrap triplet mode without it In the Run Mode where the pro gramming cable is not attached the PIC microcontroller at U6 loads an initial loader that is stored on its internal flash to the RCM4300 SRAM The PIC microcontroller communi cates with the Rabbit 4000 in the clocked serial bootstrap triplet mode to load this loader then tells the Rabbit 4000 to exit the bootstrap mode and run the loader in SRAM where upon the loader loads the BIOS from the serial flash to the RCM4300 SRAM and runs it The BIOS then loads the rest of the program from the serial flash and runs it The status pin is used by Dynamic C to determine whether a Rabbit microprocessor is present The status output has three different programmable functions 1 It can be driven low on the first op code fetch cycle 2 It can
104. r the data stored on the card The Dynamic C FAT file system will handle this overhead automatically by unmounting the microSD Card LED DS4 above the microSD Card is used by the FAT file system to show when the media is mounted Standard Windows SD Card readers may be used to read the microSD M Card formatted by the Dynamic C FAT file system with the RCM4300 as long as it has not been parti tioned An SD Card adapter is included with the microSD Card in the in the RCM4300 Development Kit The SD Card adapter has a sliding switch along the left side that may be moved down to write protect the microSD Card while it is being used with an SD Card reader Sample programs in the SAMPLESNRCM4300NSD Flash folder illustrate the use of the microSD Cards These sample programs are described in Section 3 2 2 Use of microSD Cards RabbitCore RCM4300 User s Manual 46 5 SOFTWARE REFERENCE Dynamic C is an integrated development system for writing embedded software It runs on an IBM compatible PC and is designed for use with single board computers and other devices based on the Rabbit microprocessor Chapter 5 describes the libraries and function calls related to the RCM4300 5 1 More About Dynamic C Dynamic C has been in use worldwide since 1989 It is specially designed for program ming embedded systems and features quick compile and interactive debugging A com plete reference guide to Dynamic C is contained in the Dynami
105. reader add the line ENABLE_SPREADER 0 NOTE The strong spectrum spreading setting is not recommended since it may limit the maximum clock speed or the maximum baud rate It is unlikely that the strong set ting will be used in a real application 3 Click OK to save the macro The spectrum spreader will now remain off whenever you are in the project file where you defined the macro NOTE Refer to the Rabbit 4000 Microprocessor User s Manual for more information on the spectrum spreading setting and the maximum clock speed RabbitCore RCM4300 User s Manual 44 4 6 Memory 4 6 1 SRAM All RCM4300 modules have 512K of battery backed data SRAM installed at U10 and the RCM4300 model has 512K of fast SRAM installed at U12 4 6 2 Flash Memory All RCM4300 modules also have up to 2MB of serial flash memory installed at US A user block area is defined to store persistent data The functions writeUserBlock and readUserBlock are provided for this Refer to the Rabbit 4000 Microprocessor Designer s Handbook for additional information 4 6 3 VBAT RAM Memory The tamper detection feature of the Rabbit 4000 microprocessor can be used to detect any attempt to enter the bootstrap mode When such an attempt is detected the VBAT RAM memory in the Rabbit 4000 chip is erased The serial bootloader on RCM4300 RabbitCore modules uses the bootstrap mode to load the SRAM which erases the VBAT RAM mem ory on any reset and so it cannot be us
106. requency specified for the RCM4300 model is generated using a 29 49 MHz crystal The clock doubler may be disabled if 58 98 MHz clock speeds are not required Disabling the Rabbit 4000 microprocessor s internal clock doubler will reduce power consumption and further reduce radiated emissions The clock doubler is disabled with a simple config uration macro as shown below 1 Select the Defines tab from the Dynamic C Options gt Project Options menu 2 Add the line CLOCK_DOUBLED 0 to always disable the clock doubler The clock doubler is enabled by default and usually no entry is needed If you need to specify that the clock doubler is always enabled add the line CLOCK_DOUBLED 1 to always enable the clock doubler 3 Click OK to save the macro The clock doubler will now remain off whenever you are in the project file where you defined the macro 4 5 2 Spectrum Spreader The Rabbit 4000 features a spectrum spreader which helps to mitigate EMI problems The spectrum spreader is on by default but it may also be turned off or set to a stronger setting The means for doing so is through a simple configuration macro as shown below 1 Select the Defines tab from the Dynamic C Options gt Project Options menu 2 Normal spreading is the default and usually no entry is needed If you need to specify normal spreading add the line ENABLE_SPREADER 1 For strong spreading add the line ENABLE_SPREADER 2 To disable the spectrum sp
107. rototyping Board Jumper Configurations continued Header Description Pins Connected Factory Default t RxD on header J4 x s PCI RxD Switch S2 JP6 JP6 12 PCI to Switch S2 n c PCI available on header J2 de TxC on header J4 x TE PC2 TxC LED DS3 JP6 JP8 12 PC2 to LED DS3 n c PC2 available on header J2 3 PC3 to Switch S3 12 3E PC3 RxC Switch S3 JP10 JP10 L2 RxC on header J4 x n c PC3 available on header J2 JP11 LNO buffer filter to RCM4300 1 2 Connected 1 2 Connected PB2 to LED DS2 x JP12 PB2 LED DS2 n c PB2 available on header J2 JP13 LN1 buffer filter to RCM4300 1 2 Connected 1 2 Connected PB3 to LED DS3 x JP14 PB3 LED DS3 n c PB3 available on header J2 JP15 LN2 buffer filter to RCM4300 1 2 Connected 1 2 Connected PB4 to Switch S2 x JP16 PB4 Switch S2 n c PBA available on header J2 JP17 LN3 buffer filter to RCM4300 1 2 Connected 1 2 Connected PB5 to Switch S3 x JP18 PB5 Switch S3 n c PB5 available on header J2 JP19 LN4 buffer filter to RCM4300 1 2 Connected JP20 LNS buffer filter to RCM4300 1 2 Connected JP21 LN6 buffer filter to RCM4300 1 2 Connected JP22 LN7 buffer filter to RCM4300 1 2 Connected RabbitCore RCM4300 User s Manual 116 Table B 6 RCM4300 Prototyping Board Jumper Configurations continued Header Description Pins Connected Faciory Default
108. roxy Server ete Network Ethernet Ethernet ud RCM4300 Typical Corporate Network System If your system administrator can give you an Ethernet cable along with its IP address the netmask and the gateway address then you may be able to run the sample programs with out having to setup a direct connection between your computer and the RCM4300 You will also need the IP address of the nameserver the name or IP address of your mail server and your domain name for some of the sample programs RabbitCore RCM4300 User s Manual 77 6 2 1 IP Addresses Explained IP Internet Protocol addresses are expressed as 4 decimal numbers separated by periods for example 216 103 126 155 10 1 1 6 Each decimal number must be between 0 and 255 The total IP address is a 32 bit number consisting of the 4 bytes expressed as shown above A local network uses a group of adja cent IP addresses There are always 2 IP addresses in a local network The netmask also called subnet mask determines how many IP addresses belong to the local network The netmask is also a 32 bit address expressed in the same form as the IP address An example netmask is 255 255 255 0 This netmask has 8 zero bits in the least significant portion and this means that 28 addresses are a part of the local network Applied to the IP address above 216 103 126 155 this netmask woul
109. s detailed specifications for the RCM4300 1 2 Advantages of the RCM4300 e Fast time to market using a fully engineered ready to run ready to program micro processor core Competitive pricing when compared with the alternative of purchasing and assembling individual components Easy C language program development and debugging e Rabbit Field Utility to download compiled Dynamic C bin files and cloning board options for rapid production loading of programs Generous memory size allows large programs with tens of thousands of lines of code and substantial data storage ntegrated Ethernet port for network connectivity with royalty free TCP IP software RabbitCore RCM4300 User s Manual 1 3 Development and Evaluation Tools 1 3 1 RCM4300 Development Kit The RCM4300 Development Kit contains the hardware essentials you will need to use the RCM4300 module The items in the Development Kit and their use are as follows Cable Universal RCM4300 module Prototyping Board 1 GB microSD Card with SD Card adapter Universal AC adapter 12 V DC 1 A includes Canada Japan U S Australia N Z U K and European style plugs USB programming cable with 10 pin header Cat 5 Ethernet crossover cable 10 pin header to DB9 serial cable Dynamic C CD Getting Started instructions A bag of accessory parts for use on the Prototyping Board Rabbit 4000 Processor Easy Reference poster Registration card y
110. s oe microSD Card AC Adapter and SD Card Adapter with Plugs Cables E Y di LM y E 5 C terne Accessory Parts for Prototyping Board RabbitCore RCM4300 Getting Started Prototyping Board Instructions Figure 1 RCM4300 Development Kit RabbitCore RCM4300 User s Manual 1 3 2 Software The RCM4300 is programmed using version 10 21 or later of Dynamic C A compatible version is included on the Development Kit CD ROM Also now included on the CD are the add on Dynamic C modules containing the popular uC OS II real time operating system the FAT file system as well as PPP Advanced Encryption Standard AES and other select libraries In addition to the Web based technical support included at no extra charge a one year telephone based technical support module is also available for purchase Visit our Web site at www rabbit com or contact your Rabbit Semiconductor sales representative or authorized distributor for further information 1 3 3 Online Documentation The online documentation is installed along with Dynamic C and an icon for the docu mentation menu is placed on the workstation s desktop Double click this icon to reach the menu If the icon is missing use your browser to find and load default ht
111. s sample program Verify that the message Waiting Please Send Data file message is being displayed in the Tera Term display window before proceeding Within Tera Term select File gt Send File gt Path and filename then select the OPEN option within the dialog box Once the data file has been downloaded Tera Term will indicate whether the calibration data were written successfully UPLOADCALIB C Demonstrates how to read the analog calibration constants from the user block using a terminal emulation utility such as Tera Term Start Tera Term or another terminal emulation program on your PC and configure the serial parameters as follows RabbitCore RCM4300 User s Manual 25 e Baud rate 19 200 bps 8 bits no parity 1 stop bit e Enable Local Echo option e Feed options Receive CR Transmit CR LF Follow the remaining steps carefully in Tera Term to avoid overwriting previously saved calibration data when using same the file name e Enable the File APPEND option at the bottom of the dialog box e Select the OPEN option at the right hand side of the dialog box Tera Term is now ready to log all data received on the serial port to the file you specified You are now ready to compile and run this sample program A message will be displayed in the Tera Term display window once the sample program is running Enter the serial number you assigned to your RabbitCore module in the Tera Term displa
112. se T hub and connect both the PC s network interface card and the RCM4300 module s Ethernet port to it using standard network cables The following options require more care in address selection and testing actions as conflicts with other users servers and systems can occur LAN Connect the RCM4300 module s Ethernet port to an existing LAN preferably one to which the development PC is already connected You will need to obtain IP addressing information from your network administrator e WAN The RCM4300 is capable of direct connection to the Internet and other Wide Area Networks but exceptional care should be used with IP address settings and all network related programming and development We recommend that development and debugging be done on a local network before connecting a RabbitCore system to the Internet TIP Checking and debugging the initial setup on a micro LAN is recommended before connecting the system to a LAN or WAN The PC running Dynamic C does not need to be the PC with the Ethernet card 3 Apply Power Plug in the AC adapter The RCM4300 module and Prototyping Board are now ready to be used RabbitCore RCM4300 User s Manual 75 6 2 TCP IP Primer on IP Addresses Obtaining IP addresses to interact over an existing operating network can involve a num ber of complications and must usually be done with cooperation from your ISP and or network systems administrator For this reason it is suggested that
113. that supply Once you are done measuring the current place a jumper across the header pins to resume normal operation Bottom Side O JP1 JP2 oR deam Cut traces CURRENT MEASUREMENT JP1 5 V 1 9 JP2 3 3 V Figure B 5 Prototyping Board Current Measurement Option NOTE Once you have cut the trace below header location JP1 or JP2 you must either be using the ammeter or have a jumper in place in order for power to be delivered to the Prototyping Board RabbitCore RCM4300 User s Manual 109 B 4 3 Analog Features RCM4300 only The Prototyping Board has typical support circuitry installed to complement the ADS7870 A D converter on the RCM4300 model the A D converter is not available on the RCM4210 model B 4 3 1 A D Converter Inputs Figure B 6 shows a pair of A D converter input circuits The resistors form an approx 11 1 attenuator and the capacitor filters noise pulses from the A D converter input The 470 inline jumpers allow other configurations see Table B 6 and provide digital isolation when you are not using an A D converter Parallel Port D is available These jumpers optimize using RabbitCore modules with or without A D converters if you are designing your own circuit the best performance for the A D converter would be realized with 0 2 resistors Inline jumpers are 470 Q resistors 1
114. the diagram using the serial to DB9 cable Colored supplied in the Development Kit edge gt Once you have compiled and run the sample program start Tera Term or another terminal emulation program to connect to the selected PC serial port at a baud rate of 115 200 bps You can observe the output in the Dynamic C STDIO window as you type in Tera Term and you can FE also use the Dynamic C STDIO window to clear the buf Ji eee fer QG 2 SIE e The Tera Term utility can be downloaded from hp vector co jp authors VA0024 16 teraterm html RabbitCore RCM4300 User s Manual 21 SIMPLE3WIRE C This program demonstrates basic RS 232 serial communication Lower case characters are sent on TxC and are DM received by RxD The received characters are converted to upper case M MM n TxD RxD GNI and are sent out on TxD are received on RxC and are displayed in the Dynamic C STDIO window To set up the Prototyping Board you will need to tie TxD and RxC together on the RS 232 header at J4 and you will also tie RxD and TxC together using the jumpers supplied in the Development Kit as shown in the diagram e SIMPLE5SWIRE C This program demonstrates 5 wire RS 232 serial communication with flow control on Serial Port C and data flow on Serial Port D To set up the Prototyping Board you will need to tie TxD and RxD togeth
115. ther mode but can only be downloaded and debugged when the RCM4300 is in the Program Mode Refer to the Rabbit 4000 Microprocessor User s Manual for more information on the pro gramming port 4 3 2 Standalone Operation of the RCM4300 Once the RCM4300 has been programmed successfully remove the programming cable from the programming connector and reset the RCM4300 The RCM4300 may be reset by cycling the power off on or by pressing the RESET button on the Prototyping Board The RCM4300 module may now be removed from the Prototyping Board for end use installation CAUTION Power to the Prototyping Board or other boards should be disconnected when removing or installing your RCM4300 module to protect against inadvertent shorts across the pins or damage to the RCM4300 if the pins are not plugged in cor rectly Do not reapply power until you have verified that the RCM4300 module is plugged in correctly NOTE If you used the Code and BIOS in RAM BIOS memory compiler option while debugging remember to recompile the working application using the Code and BIOS in Flash Run in RAM option once you are ready to use the RCM4300 in a standalone installation RabbitCore RCM4300 User s Manual 40 4 4 A D Converter RCM4300 only The RCM4300 has an onboard ADS7870 A D converter whose scaling and filtering are done via the motherboard on which the RCM4300 module is mounted The A D converter multiplexes converted signals from eight single en
116. ting Any components in the conformally coated area may be replaced using standard soldering procedures for surface mounted components A new conformal coating should then be applied to offer continuing protection against the effects of moisture and contaminants NOTE For more information on conformal coatings refer to Rabbit Semiconductor s Technical Note 303 Conformal Coatings RabbitCore RCM4300 User s Manual 100 APPENDIX B PROTOTYPING BOARD Appendix B describes the features and accessories of the Proto typing Board and explains the use of the Prototyping Board to demonstrate the RCM4300 and to build prototypes of your own circuits The Prototyping Board has power supply connections and also provides some basic I O peripherals RS 232 LEDs and switches as well as a prototyping area for more advanced hardware development RabbitCore RCM4300 User s Manual 101 B 1 Introduction The Prototyping Board included in the Development Kit makes it easy to connect an RCM4300 module to a power supply and a PC workstation for development It also pro vides some basic I O peripherals RS 232 LEDs and switches as well as a prototyping area for more advanced hardware development For the most basic level of evaluation and development the Prototyping Board can be used without modification As you progress to more sophisticated experimentation and hardware development modifications and additions can be made to the board w
117. tion must be done with the JP23 JP24 selection jumpers in the desired position see Figure B 6 If a calibration is performed and a jumper is subse quently moved the corresponding input s must be recalibrated The calibration table in software only holds calibration constants based on mode channel and gain Other factors affecting the calibration must be taken into account by calibrating using the same mode and gain setup as in the intended use Sample programs are available to illustrate how to read and calibrate the various A D inputs for the single ended operating mode Mode Read Calibrate Single Ended one channel AD CAL CHAN C Single Ended all channels AD RDVOLT ALL C AD CAL ALL C RabbitCore RCM4300 User s Manual 112 B 4 4 Serial Communication The Prototyping Board allows you to access the serial ports from the RCM4300 module Table B 5 summarizes the configuration options Note that Serial Ports F can be used only when the RCM4310 is installed on the Prototyping Board Table B 5 Prototyping Board Serial Port Configurations Serial Port Header Default Use Alternate Use A J2 Programming Port RS 232 Serial Flash 7 TM p L D Gane Nak if equipped C J2 J4 RS 232 D J2 J4 RS 232 E J2 RS 232 F J2 RS 232 Serial Ports E and F may be used as serial ports or the corresponding pins at header location J2 may be used as parallel ports
118. u must install and use Dynamic C This chapter provides a tour of its major features with respect to the RCM4300 3 1 Introduction To help familiarize you with the RCM4300 modules Dynamic C includes several sample programs Loading executing and studying these programs will give you a solid hands on overview of the RCM4300 s capabilities as well as a quick start with Dynamic C as an application development tool NOTE The sample programs assume that you have at least an elementary grasp of ANSI C If you do not see the introductory pages of the Dynamic C User s Manual for a sug gested reading list In order to run the sample programs discussed in this chapter and elsewhere in this manual 1 Your module must be plugged in to the Prototyping Board as described in Chapter 2 Getting Started 2 Dynamic C must be installed and running on your PC 3 The programming cable must connect the programming header on the module to your PC 4 Power must be applied to the module through the Prototyping Board Refer to Chapter 2 Getting Started if you need further information on these steps To run a sample program open it with the File menu if it is not still open then compile and run it by pressing F9 Each sample program has comments that describe the purpose and function of the pro gram Follow the instructions at the beginning of the sample program Complete information on Dynamic C is provided in the Dynamic C User s M
119. ual 59 anaIn int anaIn unsigned int channel int opmode int gaincode DESCRIPTION Reads the value of an analog input channel using the Direct Mode method of addressing the A D converter Note that it takes about 1 second to ensure an internal capacitor on the A D converter is charged when the function is called the first time PARAMETERS channel the channel number 0 to 7 corresponding to LNO to LN7 opmode the mode of operation SINGLE single ended input DIFF differential input mAMP 4 20 mA input channel SINGLE DIFF mAMP 0 AINO AINO AINI AINO 1 AIN1 AIN1 AINO AIN1 2 AIN2 AIN2 AIN3 AIN2 3 AIN3 AIN3 AIN2 AIN3 4 AIN4 AIN4 AIN5 AIN4 5 AIN5 AIN5 AIN4 AIN5 6 AIN6 AIN6 AIN7 AIN6 7 AIN7 AIN7 AIN6 AIN7 Not accessible on Prototyping Board gaincode the gain code of 0 to 7 applies only to Prototyping Board Gain Code Actual Gain X ange 0 1 0 22 5 1 1 8 0 11 25 2 3 6 0 5 6 3 4 5 0 4 5 4 7 2 0 2 8 5 9 0 0 2 25 6 14 4 0 1 41 7 18 0 1 126 RabbitCore RCM4300 User s Manual 60 anaIn continued RETURN VALUE A value corresponding to the voltage on the analog input channel 0 2047 for single ended conversions 2048 2047 for differential conversions ADSPIBUSY 4094 if the A D converter is locked out or if the SPI port is in use if more than SPI MAXTIME milliseconds elapse since t
120. uld not be expected to run correctly under Windows Vista at this time Programs can be downloaded at baud rates of up to 460 800 bps after the program compiles RabbitCore RCM4300 User s Manual 47 Dynamic C has a number of standard features Full feature source and or assembly level debugger no in circuit emulator required Royalty free TCP IP stack with source code and most common protocols e Hundreds of functions in source code libraries and sample programs gt Exceptionally fast support for floating point arithmetic and transcendental functions gt RS 232 and RS 485 serial communication gt Analog and digital I O drivers gt IC SPI GPS file system gt LCD display and keypad drivers Powerful language extensions for cooperative or preemptive multitasking Loader utility program to load binary images into Rabbit targets in the absence of Dynamic C Provision for customers to create their own source code libraries and augment on line help by creating function description block comments using a special format for library functions e Standard debugging features gt Breakpoints Set breakpoints that can disable interrupts P Single stepping Step into or over functions at a source or machine code level uC OS II aware gt Code disassembly The disassembly window displays addresses opcodes mnemonics and machine cycle times Switch between debugging at machine code level and source code level b
121. ule s header J4 on the bottom side into socket RCM1 on the Prototyping Board Programming Header RCM4300 iii Insert standoffs between mounting holes and Prototyping Board Do not press down here or on microSD Card holder Line up mounting holes with holes on Prototyping Board Figure 3 Install the Module on the Prototyping Board NOTE Itis important that you line up the pins on header J4 of the module exactly with socket RCM1 on the Prototyping Board The header pins may become bent or damaged if the pin alignment is offset and the module will not work Permanent electrical dam age to the module may also result if a misaligned module is powered up Press the module s pins gently into the Prototyping Board socket press down in the area above the header pins For additional integrity you may secure the RCM4300 to the stand offs from the top using the remaining three screws and washers RabbitCore RCM4300 User s Manual 13 2 2 3 Step 3 Connect Programming Cable The programming cable connects the module to the PC running Dynamic C to download programs and to monitor the module during debugging Connect the 10 pin connector of the programming cable labeled PROG to header J1 on the RCM4300 as shown in Figure 4 Be sure to orient the marked usuall
122. ult Use Alternate Use Notes 24 PCO Input Output TXD I O Strobe IO Timer CO TCLKF 25 PCI Input Output RXD TXD I O Strobe I1 Timer C1 RCLKF Input Capture Serial Port D 26 PC2 Input Output TXC TXF T O Strobe I2 Timer C2 27 PC3 Input Output RXC TXC RXF I O Strobe I3 Timer C3 SCLKD Input Capture Serial Port C 28 PC4 Input Output TXB I O Strobe I4 PWMO TCLKE 29 PC5 Input Output RXB TXB I O Strobe I5 PWMI RCLKE Input Capture Serial Port B shared by serial flash and by RCMA300 A D converter 30 PC6 Input Output TXA TXE T O Strobe I6 PWM2 31 PC7 Input Output RXA TXA RXE I O Strobe I7 PWM3 SCLKC Input Capture Programming port 32 PEO Input Output I O Strobe IO A20 Timer CO TCLKF INTO QRDIB RabbitCore RCM4300 User s Manual 32 Table 2 RCM4300 Pinout Configurations continued Pin Pin Name Default Use Alternate Use Notes 33 PEI Input Output I O Strobe I1 A21 Timer C1 RXD RCLKF INTI QRDIA Input Capture 34 PE2 ENET EN Input Ethernet enable not connected 35 PE3 Input Output I O Strobe I3 A23 Timer C3 RXC RXF SCLKD DREQI QRD2A Input Capture 36 PE4 Input Output I O Strobe I4 A0 INTO PWMO TCLKE 37 PES SMODEO Input Output I O Strobe I5 INTI PWMI RXB
123. ultitask ing and the nonblocking mode for cooperative multitasking See the description for sbfWriteFlash for more information on using a uC OS II and a mutex with the serial flash driver PARAMETERS dest pointer to the 16 bit address of the destination buffer offset the physical offset into the serial flash nbytes the number of bytes to read RETURN VALUE 0 if successful The return values below apply only if SPI USE UCOS MUTEX is not defined positive N to indicate that the SPI port is being used by device n if more than SPI MAXTIME milliseconds elapse while waiting for the SPI port to become available one of the following two runtime errors will occur ERR SPI MUTEX ERROR when using n C OS IT or ETIME if not using nC OS II RabbitCore RCM4300 User s Manual 50 sbfWriteFlash int sbfWriteFlash unsigned long flashDst void Src unsigned len DESCRIPTION Writes len bytes up to 64K to physical address flashDst from Src Keep calling sb WriteFlash until it returns zeroa or a negative error code A positive return value indicates that the serial flash SPI port is being used by another device If you are using uC OS II and SPI USE UCOS MUTEXis defined you may call sb WriteF lash just once If more than SPI MAXTIME milliseconds elapse while waiting for the SPI port to become available one of the following two run time errors will occur ERR_SPI_MUTEX_ERROR when using uC OS IT or ETIME if not using un
124. umber 0 to 7 corresponding to LNO to LN7 opmode the mode of operation SINGLE single ended input DIFF differential input mAMP 4 20 mA input channel SINGLE DIFF mAMP 0 AINO AINO AIN1 AINO 1 AIN1 AIN1 AINO AIN1 2 AIN2 AIN2 AIN3 AIN2 3 AIN3 AIN3 AIN2 AIN3 4 AIN4 AIN4 AINS AIN4 5 AINS AINS AIN4 AINS 6 AIN6 AIN6 AIN7 AIN6 7 AIN7 AIN7 AIN6 AIN7 ALLCHAN read all channels for selected opmode Not accessible on Prototyping Board RabbitCore RCM4300 User s Manual 71 anaInEEWr continued gaincode the gain code of 0 to 7 The gaincode parameter is ignored when channel is ALLCHAN Gain Code Actual Gain uc i d 0 1 0 22 5 1 1 8 0 11 25 2 3 6 05 6 3 4 5 0 4 5 4 7 2 0 2 8 5 9 0 0 2 25 6 14 4 0 1 41 7 18 0 1 126 Applies to Prototyping Board RETURN VALUE 0 if successful if address is invalid or out of range SEE ALSO analnEEWr analnCalib RabbitCore RCM4300 User s Manual 5 3 Upgrading Dynamic C Dynamic C patches that focus on bug fixes are available from time to time Check the Web site www rabbit com support for the latest patches workarounds and bug fixes 5 3 1 Add On Modules Dynamic C installations are designed for use with the board they are included with and are included at no charge as part of our low cost kits Rabbit Semiconductor offers for purchase a
125. where surface mount components may be installed Small holes are provided around the surface mounted components that may be installed around the prototyping area RabbitCore RCM4300 User s Manual 108 B 4 1 Adding Other Components There are pads for 28 pin TSSOP devices 16 pin SOIC devices and 6 pin SOT devices that can be used for surface mount prototyping with these devices There are also pads that can be used for SMT resistors and capacitors in an 0805 SMT package Each component has every one of its pin pads connected to a hole in which a 30 AWG wire can be soldered standard wire wrap wire can be soldered in for point to point wiring on the Prototyping Board Because the traces are very thin carefully determine which set of holes is con nected to which surface mount pad B 4 2 Measuring Current Draw The Prototyping Board has a current measurement feature available at header locations JP1 and JP2 for the 5 V and 3 3 V supplies respectively To measure current you will have to cut the trace on the bottom side of the Prototyping Board corresponding to the power supply or power supplies whose current draw you will be measuring Header loca tions JP1 and JP2 are shown in Figure B 5 Then install a 1 x 2 header strip from the Development Kit on the top side of the Prototyping Board at the header location s whose trace s you cut The header strip s will allow you to use an ammeter across their pins to measure the current drawn from
126. y red edge of the cable towards pin 1 of the connector Do not use the DIAG connector which is presently not supported by the RCM4300 AC Adapter f y Press down on clip snap plug into place 3 pin power connector Programming Cable Colored edge OO 00000 OO To PC USB port 000000000 000000000 0000 0000000000000000000 O ISO TU uud dd dd SS Figure 4 Connect Programming Cable and Power Supply NOTE Never disconnect the programming cable by pulling on the ribbon cable Carefully pull on the connector to remove it from the header Connect the other end of the programming cable to an available USB port on your PC or workstation Your PC should recognize the new USB hardware and the LEDs in the shrink wrapped area of the USB programming cable will flash if you get an error message you will have to install USB drivers Drivers for Windows XP are available in the Dynamic C Drivers Rabbit USB Programming Cable WinxP_2K folder double click DPInst exe to install the USB drivers Drivers for other operating systems are available online at www ftdichip com Drivers VCP htm RabbitCore RCM4300 User s Manual 14 2 2 4 Step 4 Connect Power Once all the other connections have been made you can connect power to the Prototyping
127. y simply opening or closing the disassembly window Watch expressions Watch expressions are compiled when defined so complex expres sions including function calls may be placed into watch expressions Watch expressions can be updated with or without stopping program execution gt Register window All processor registers and flags are displayed The contents of general registers may be modified in the window by the user gt Stack window shows the contents of the top of the stack gt Hex memory dump displays the contents of memory at any address gt STDIO window printf outputs to this window and keyboard input on the host PC can be detected for debugging purposes printf output may also be sent to a serial port or file RabbitCore RCM4300 User s Manual 48 5 2 Dynamic C Function Calls 5 2 1 Digital I O The RCM4300 was designed to interface with other systems and so there are no drivers written specifically for the I O The general Dynamic C read and write functions allow you to customize the parallel I O to meet your specific needs For example use WrPortI PEDDR amp PEDDRShadow 0x00 to set all the Port E bits as inputs or use WrPortI PEDDR amp PEDDRShadow OxFF to set all the Port E bits as outputs When using the auxiliary I O bus on the Rabbit 4000 chip add the line define PORTA AUX IO required to enable auxiliary I O bus to the beginning of any programs using the auxiliary I O bus
128. y window then press the ENTER key The Tera Term display window will now display the calibration data Now select CLOSE from within the Tera Term LOG window which will likely be a separate pop up window minimized at the bottom of your PC screen This finishes the logging and closes the file Open your data file and verify that the calibration data have been written properly A sample is shown below Serial port transmission Uploading calibration table Enter the serial number of your controller 9MN234 SN9MN234 ADSE 0 float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset 1 float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset l l ADDF 0 float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset 2 float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset l l ADMA 3 float_gain float_offset 4 float_gain float_offset l l END RabbitCore RCM4300 User s Manual 26

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