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phyBOARD -Wega-AM335x Application Guide Preliminary

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1. Abbreviation Definition Audio Video BSP Board Support Package Software delivered with the Development Kit including an operating system Windows or Linux preinstalled on the module and Development Tools CB Carier Board used in reference to the phyBOARD Wega Development Kit Carrier Board DFF D flip flop DSC Direct Solder Connect EMB External memory bus EMI Electromagnetic Interference GPI General purpose input GPIO General purpose input and output GPO General purpose output IRAM Internal RAM the internal static RAM on the Texas Instruments AM335x microcontroller J Solder jumper these types of jumpers require solder equipment to remove and place JP Solderless jumper these types of jumpers can be removed and placed by hand with no special tools NC Not Connected PCB Printed circuit board PDI PHYTEC Display Interface defined to connect PHYTEC display adapter boards or custom adapters PEB PHYTEC Extension Board PMIC Power management IC PoE Power over Ethernet PoP Package on Package POR Power on reset RTC Real time clock SBC Single Board Computer used in reference to the PBA CD 02 phyBOARD Wega AM335x module SMT Surface mount technology SOM System on Module used in reference to the PCL 051 phyCORE AM335x module Sx User button Sx e g S1 S2 used in reference to the available user buttons
2. 37 31 Concept or the phy BOAR DW 37 3 2 Overview of the phy BOARD Weea Peripherals ttt tanen 38 32 1 Connectors and Pin Pager acea deed No s etd 38 322 MM cv rr RD 39 3 3 Functional Components on the phyBOARD Wega 40 S08 Power Supply REA 40 3 3 1 1 Power Connectors X67 and 72 40 3 01 Power LED DIS ascia ES uen M Ria pH id 42 333 VBA Rand e am 42 3 32 RS 232 Connectivity 43 3 3 2 1 Software Implementation sus serere ro Rhet ra eii o ei ku psu 44 3 33 Ethernet Connectivity X16 and 17 nennen nenne 44 3 3 3 1 Software Implementation eese 45 3 3 4 USB Connectivity X15 and 4 a ostecssideusdv luci i 45 3 3 4 1 Software Implementation e Qnin UNE MR ERE ed wg ERES 45 333 Audio Interface X55 and en eer e NN EN PR n 47 3 3 5 1 Software Implementation 48 CAN Connectivity bod 48 PHYTEC Messtechnik GmbH 2013 L 792e 0 1 phyBOARD Wega AM335x PB 00802 xxx 3 3 5 2 Software Implementation 49 3 3 6 Audio Video connectors X70 and 71 eese 51 3 3 7 Expansion 21 3 3 8 Secure Digital Memory Card MultiMedia Card X11
3. Pin Signal Pin Signal 1 NC 2 NC 3 UARTI RXD RS232 4 UARTI RTS RS232 5 TXD 5232 6 UARTI CTS RS232 7 NC 8 NC 9 GND 10 NC Table 6 Pin Assignment of RS 232 Connector X66 An adapter cable is included in phyBOARD Wega Am335x Kit to facilitate the use of the UARTI interface The following figure shows the signal mapping of the adapter 1 6 2 Pin 2 RxD RS232 7 Pin 7 RTS RS232 3 Pin 3 TxD RS232 8 Pin 8 CTS RS232 4 9 5 5 GND Figure 5 RS 232 Connector Signal Mapping Note The UARTO interface which is required for debugging is routed to expansion connector X69 The Evaluation Board PEB EV AL 01 delivered with the kit allows easy use of this interface Please find additional information on the Evaluation Board in Application Guide for phyBOARD Wega AM335x Expansion Boards L 793e 0 PHYTEC Messtechnik GmbH 2013 L 792e 0 43 phyBOARD Wega AM335x PB 00802 xxx 3 3 2 1 Software Implementation The AM335x SOM supports up to 6 so called UART units On the phyBOARD Wega UARTI is routed to pin header connector X66 and UART 2 are routed to the expansion connector X69 Only dev ttyOO for UARTO and dev ttyO1 for UARTI have been implemented within the BSP dev ttyOO is the standard console mainly used for debugging and control of software updates dev ttyO1 is intended for use by customer s applications Usage of dev ttyO2 for UART2 d
4. essen 48 Figure 10 CAN Connector Signal Mapping o iere e ERR EVANS TENIS Oaertn dra EH UHR RIA 49 Figure 11 SD MM Card interface at connector X11 51 Figure 12 System Reset S2 55 List of Tables Table 1 Abbreviations and Acronyms used in this Table2 phyBOARD Wega Connectors and Pin 38 Table 3 phyBOARD Wega LEDs 39 Table 4 Pin Assignment of the 2 pole PHOENIX Connector at 7 41 5 Pin Assignment of the 6 pole WAGO Connector at X67 42 Table 6 Pin Assignment of R5 252 Connector X60 teen I n er dirae ar ned 43 Table 7 Pin Assignment or CAN Connector X65 48 Table 8 PHYTEC A V connector X70 neurone 70 Table PHYTEC A V connector 70 Table T0 Connectivity 71 Table 11 TC Addresses in tid 72 Table 12 PHY TEC Expansion Connector X69 one 74 PHYTEC Messtechnik GmbH 2013 L 792e 0 lil phyBOARD Wega AM335x PB 00802 xxx Conventions Abbreviations and Acronyms This hardware manual describes the PB 00802 xxx Singe Board Computer SBC in the following referred to as phyBOARD Wega AM335x The manual specifies the phyBOARD Wega AM335x s design and function Precise specificat
5. ib EG phyBOARD Wega AM335x Application Guide Document No L 792e 0 SBC Prod No PB 00802 xxx CB PCB No 1405 0 SOM PCB No 1397 0 Preliminary Edition November 2013 A product of a PHYTEC Technology Holding company phyBOARD Wega AM335x PB 00802 xxx Copyrighted products are not explicitly indicated in this manual The absence of the trademark or and copyright symbols does not imply that a product is not protected Additionally registered patents and trademarks are similarly not expressly indicated in this manual The information in this document has been carefully checked and is considered to be entirely reliable However PHYTEC Messtechnik GmbH assumes no responsibility for any inaccuracies PHYTEC Messtechnik GmbH neither gives any guarantee nor accepts any liability whatsoever for consequential damages resulting from the use of this manual or its associated product PHYTEC Messtechnik GmbH reserves the right to alter the information contained herein without prior notification and accepts no responsibility for any damages that might result Additionally PHYTEC Messtechnik GmbH offers no guarantee nor accepts any liability for damages arising from the improper usage or improper installation of the hardware or software PHYTEC Messtechnik GmbH further reserves the right to alter the layout and or design of the hardware without prior notification and accepts no liability for doing so Copyr
6. 51 3 3 8 1 Software Implementation sese 52 32182 Adressme ie 53 Boo Boot Mode er 53 3 3 10 CPU core frequency Sen stu peque poete ei I dpa bein URN 53 SSL ISIE Qi T n a E EE 55 3 3 12 System Reset Button 55 3 3 12 1 Software Implementation 56 A Adya nced nf rmati n sssssssssssssssssosssncosissonsssusssvosssn ssussonessossansskassssosssidisoossssco sessies esisi 57 41 57 4 2 SoftWare OVePVIOWM 57 4 3 Getting Started with the BSP 57 4 3 1 Working with the Kernel sesso rete i o Pelri as bn pet Re Reve re i 57 4 3 0 Working with the 58 4 3 3 Writing the Images into the Target s 61 44A Updating the SOT AEG tam artc R tu eed eu an AU age TER Un NB QR DEN UU 64 4 4 1 Creating a bootable SD Ql NU ERRANT 64 4 4 2 Flashing the nennen enne 65 4 4 3 Writing the Kernel Root File System into 65 45 Setup your own Lmux Host PG 66 4 9 Essential settings ERU KV dria ptu Ur eerie a 66 4 5 1 1 Installation of software 66 4 5 1 2 Setting up Eclipse and integrate plug 67 4 5 1 3 Setting up a TFTP Server 68 45 2 Optional Setting 68 4 6 Syst
7. Linker General Libraries Miscellaneous Shared Library Settings GCC Assembler General 16 lt 1 Binary Parsers 9 Error Parsers Command arm cortexa8 linux gnueabihf as All options Expert settings Command line pattern S COMMAND S FLAGS S OUTPUT FLAG 5 Cancel PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Started Click Apply Select the Build Steps tab Enter the following command in the Post build steps Command input field scp myHelloWorld root 192 168 3 11 home ssh root 2 192 168 3 11 myHelloWorld Properties foi myHelloworld Settings Qv v gt Resource E 2 Builders Tool Settings Build Steps PBuild Artifact Error Parsers C C Build Pre build steps Build Variables Command Discovery Options Environment Description Logging Settings Tool Chain Editor Post build steps gt General Command Project References scp myHelloworld rook 192 168 3 11 home ssh root 192 168 3 11 myHelloworld Run Debug Settings Description Be sure to enter semicolon before ssh command Ensure that the file myHelloWorld on the target will have execution rights because otherwise 55 will fail Click Apply Click OK Select Project Clean from the menu bar PHYTEC Messtechnik GmbH 2013 L 792e 0 17 phyBOARD Wega AM335x
8. Enter root 192 168 3 11 myHelloWorld into the Arguments field External Tools Configurations Create manage and run configurations Q Run a program p 3 X B Sey Name myHelloworld Target a El main Refresh ay Build B Environment 2 Common Ant Build Location API Use Report ust bin ssh Program Browse Workspace Browse File System Variables New configuration Working Directory Browse Workspace BrowseFileSystem Variables root 192 168 3 11 myHelloworld Variables Note Enclose an argument containing spaces using double quotes Revert Filter matched 4 of 4 item Ly 0 Close Run Select Apply PHYTEC Messtechnik GmbH 2013 L 792e 0 23 phyBOARD Wega AM335x PB 00802 xxx Select Run If you want to execute the program the next time you can use the Run External Programs button from the menu bar You have successfully created your own Eclipse project and you learned how to execute a program on the target 2 2 2 Debugging an Example Project In this chapter you will learn using the GNU debugger GDB on the host for remote debugging in conjunction with the GDB server on the target GDB is the symbolic debugger of the GNU project and is arguably the most important debugging tool for any Linux system First you will start the GDB ser
9. Index 38 Pin 38 PARI 45 RVG rc 44 Pipe 44 Poo A 45 Ei a 43 Pire X 40 m 40 SPEED sarete inicia 44 USB 2 o 45 77 phyBOARD Wega AM335x PB 00802 xxx 78 PHYTEC Messtechnik GmbH 2013 L 792e 0 Suggestions for Improvement Document phyBOARD Wega AM335x Document number L 792e 0 November 2013 How would you improve this manual Did you find any mistakes in this manual page Submitted by Customer number Name Company Address Return to PHYTEC Messtechnik GmbH Postfach 100403 D 55135 Mainz Germany Fax 449 6131 9221 33 PHYTEC MesstechnikGmbH 2013 L 792e 0 Published by VIEL PHYTEC Messtechnik GmbH 2013 Ordering No L 792e_0 Printed in Germany 81
10. S CYLINDERS echo 9 0x0C echo prr sfdisk D H 255 S 63 C SCYLINDERS SDRIVE mkfs vfat F 32 n boot S DRIVE 1 lke2fs j L rootfs S DRIVE 2Z fi fi It s important that after that you ll copy image MLO to partition named boot at first so that it will be written to the right sectors of the SD card You may freely choose the order in which you copy all further images but MLO must always be the very first Copy barebox image linuximage and root ubi to partition boot too In case that you want to boot the whole Linux from SD card furthermore untar root tgz to partition rootfs sudo tar zxf root tgz C media rootfs 64 PHYTEC Messtechnik GmbH 2013 L 792e 0 Advanced Information 4 4 3 Flashing the Bootloader Use bootable SD card in order to boot into Barebox Without any valid Bootloader in NAND board will automatically try SD card for booting Otherwise you need to force booting from SD card by connecting X LCD D2 pin 8 at X70 to a high level e g VCC3V3 pin 13 at X71 during the power up sequence Partition boot of the SD card should automatically be mounted by Barebox as directory mnt disk Otherwise you can mount manually using the following Barebox commands mkdir mnt disk 10 1 mount dev disk0 0 mnt disk Flash x loader MLO by typing erase dev nand0 xload bb cp mnt disk MLO dev nand0 xload bb Write Barebox into flash by typing erase dev
11. tpboot The TFTP server will access this folder later mkdir tftpboot At last we must set the right permissions chmod 777 tftpboot phyBOARD Wega AM335x can access to the tftpboot folder to load the 25 You have successfully set up the TFTP server In the future the images 4 5 2 Optional settings In the following we show the optional settings These settings are not needed for a successful operation of this Quickstart They only simplify the handling and the look of the system For this reason we show the modifications without big explanation Installation of vim the improved vi editor Creation of desktop icons for faster and easier start of required programs The following modifications were made to the look of Ubuntu Other wallpaper and associated options were adjusted with the help of gsettings Changing the color ofthe Gnome terminal History search backward and history search forward in etc inputrc is activated This allows you to search through your history with the entered string Also there are some scripts that will be executed at the first start after the installation These scripts ensure that the right permissions are set for created user 25 Congratulations You have successfully configured your Ubuntu to work with 68 PHYTEC Messtechnik GmbH 2013 L 792e 0 Advanced Information 4 6 System Level Hardware Information 4 6 Audio Video connectors The Audio V
12. 6520576 726 6420 62662074 BEF9EC60 68652070 68794341 52442D4D 21202873 7 65726961 6C290A00 00000000 88ECF9BE BEF9EC80 D8AF0340 9C840000 00301440 DA4EDFOBE BEF9EC90 01000000 90840000 F0840000 00000000 BEF9ECAO 8C830000 00000000 00000000 00000000 00500240 09000000 88ECF9BE 90AF0340 Click Add Rendering 34 PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Started Select ASCII and click OK Memory Monitor Oxbef9ec47 OXBEF9EC47 Select rendering s to create m Integer Unsigned Integer Hex Integer You can see the contents of the variable buffer at the address Oxbef9ec47 or whatever address is used on your system Console 2 Tasks Problems Executables 0 Memory 53 gt 5 vy mo 2 New Renderings BEF9ECS0 o th e Wo BEF9EC60 he p s BEF9EC70 eria 1 6 BEFSECSO 0 mome O ui BEF9EC90 onn t BEF9ECAO ER Now click the Resume button from menu bar The debugger stops at breakpoint in the last line of main PHYTEC Messtechnik GmbH 2013 L 792e 0 35 phyBOARD Wega AM335x PB 00802 xxx c HelloWorld c 23 m int out a out 1 0 RDWR write out buffer count close out int main void printf Welcome to the Wo
13. system PTXdist creates a complete runable operating system with the root filesystem and all it s applications After building the BSP on your host PC you can download it to and execute it on the target 4 3 Getting Started with the BSP In this chapter you will go through some software topics First you will configure and compile your own kernel and root file system With the help of PTXdist you can add additional features or disable them if they are not needed After compiling the new images you will learn how to write the newly created kernel and root file system into target s flash memory and how to start from 431 Working with the Kernel In this part you will learn how to configure and build a new Linux kernel and a root file system Then you will configure the kernel and the root file system with the help of PTXdist a tool to build the Board Support Package and to create your own image After the configuration you will create your own image PHYTEC Messtechnik GmbH 2013 L 792e 0 57 phyBOARD Wega AM335x PB 00802 xxx To configure your images the following files are already pre installed ptxdist XXXX XX X tgz Tool from our partner Pengutronix that configures and compiles BSPs arm cortexa8 linux gnueabihf Toolchain phyBOARD WEGA AMG335x PDXX X X tar gz BSP for the phyBOARD 4 3 2 Working with the filesystem Let s start by opening a new terminal if you haven t already opened it and change into the directory
14. the mount and umount command work as expected The cards are always mounted as being writable Setting of write protection of MMC SD cards is not recognized 32 PHYTEC Messtechnik GmbH 2013 L 792e 0 Accessing the phyBOARD Wega Interfaces 3 3 8 2 Adressing the RTC The RTC RV 4162 C7 on the phyCORE AM335x can be accessed as dev rtc0 It also has the entry sys class rtc rtc0 in the sysfs file system where you can read for example the name Date and time can be manipulated with the wclock tool using the w systohc and s hctosys options For more information about this tool refer to the manpage of hwclock To set the date first use date see man date on the PC and then run hwclock w u to store the new date into the RTC Please note that in case you need to use RTC s interrupt you need to shortcut pin 37 x intr and pin 40 x intr RTCn of the expansion connector X69 But this can only be done if you don t need this interrupt line for a touch controller 3 3 9 Boot Mode The pyhBOARD Wega has a defined boot sequence 1 NAND 2 SD MMC The exact choosen boot mode in the processor is SYSBOOT 4 0 10011b NAND NANDI2C UARTO 3 3 10 CPU core frequency Scaling The phyCORE AM335x supports dvfs dynamic voltage and frequency scaling Four different frequencies are supported Type cat sys devices system cpu cpu0 cpufreq scaling available frequencies and you ll get them all l
15. then type saveenv and reboot the board 62 PHYTEC Messtechnik GmbH 2013 L 792e 0 Advanced Information Now we download the images from the TFTP server to the target s RAM then we erase the required flash and write the images from the RAM into the flash Type erase dev nand0 kernel bb to erase the kernel partition Type cp mnt tftp linuximage dev nand0 kernel bb to download the kernel using TFTP and write it into the target s flash The copy process can take up to several minutes Now we flash the root filesystem type ubiformat y dev nand0 root ubiattach dev nand0 root ubimkvol dev ubi0 root 0 cp mnt tftp root ubifs dev ubi0 root Type boot to boot the phyBOARD Wega AM335x with the new kernel and root file system After the target has successfully finished booting type root to log in Now we can test our new editor nano by trying to open a file with it nano etc profile environment Close nano by pressing CTRL X Close Microcom when nano is closed Troubleshooting If any problem occurs after writing the kernel or the root file system into the flash memory you can restore the original kernel inuximage and root file system root ubifs from the tfipboot directory files are also downloadable from our ftp server or you can find them on our Linux phyBOARD Wega AMG35x Kit DVD under PHYTEC BSP If you want other versions check our ftp server too ftp ftp phytec de pub Produ
16. Contro 4x analog in Control MM Power LED A 0911313117 0 NU A V Connector 1 Display Interface ri ries rir aM Line in Line out CAN 21010101121210 101 0 5 Speaker Connector Back Side 11111739 1 serial Ethernet OTG TTL level USB Host micro SD Figure 1 View of the phyBOARD Wega AM335x Reset 2 PHYTEC Messtechnik GmbH 2013 L 792e 0 Introduction 113 Block Diagram phyBOARD Wega AM335x 5V 2 pole Combicon CAN Transceiver RS232 Transceiver CAN 5x2 Pin Header RS232 5x2 Pin Header USB Micro AB Connector Supply Power Power Module 6 pole Parallel Display FS 0 FC 0 Touch Reset Interrupt Audio e Reset 5 Video Different Supply Voltages inc Backlight PWM Connector Goldcap 2x20 and 2x8 forRTC Socket phyCORE AM335x VCC3V3 UART 0 SPIO FC 0 JTAG MMC 2 UART 2 UART 3 GPIOs Interrupt Reset Expansion Analog Inputs Different Supply Voltages Connector 2x30 Socket Host Standard A with DSC Technology Line In Line Out 3x2 Pin Header Audio Mono Speaker Codec 2 pole Molex Ethernet 1 10 100 MMC SD 0 Ethernet 0 10 100 Figure 2 Block Diagram of the phy BOARD Weg
17. Includes include lt stdio h gt gt Debug gt myHelloworld c write n bytes to the serial interface void write_tty char buffer int count E E amp c ces 1 aw write unistd h fcntl h stdio h int out variable for file describtor out open dev console 0 RDWR write out buffer count close out open interface write n bytes close the serial interface 1 1 1 1 5 int main void char buf Welcome to the World of PHYTEC serial n write tty buf sizeof buf 1 write buffer to tty printf Welcome to the World of write to stdout output variable 9 return 0 E NI Problems Tasks Bl Console 7 E Properties p i CDT Build Console myHelloworld A Burtu rinismneu lz TEN n Writable Smart Insert 43 1 To grab input press Ctrl G Save your program after changing the code The application will be compiled built copied to the target and executed Click the Microcom icon on the desktop Microcom 20 Beri PHYTEC Messtechnik GmbH 2013 e main voic L 792e_0 Getting Started f you are not logged in enter root and press Enter myHelloWorld to start the application You will see the following output Welcome to the World of PHYTEC serial Welcome to the World of
18. OTG devices are capable to initiate a session control the connection and exchange host and peripheral roles between each other This interface is compliant with USB revision 2 0 USB 1 is accessible on the top at connector X15 USB Standard A and is configured as USB Host 22 USB OTG Figure 7 Components supporting the USB Interfaces LED 8 displays the status of USBO VBUS and LED D7 the status of 0581 VBUS For later expansion boards the USB1 interface can be routed to the expansion connector X69 by populating J72 and J73 2 3 3 3 4 1 Software Implementation 3 3 4 1 1 USB Host The AM335x CPU embeds a USB 2 0 EHCI controller that is also able to handle low and full speed devices USB 1 1 The BSP includes support for mass storage devices and keyboards Other USB related device drivers must be enabled in the kernel configuration on demand PHYTEC Messtechnik GmbH 2013 L 792e 0 45 phyBOARD Wega AM335x PB 00802 xxx Due to udev connecting various mass storage devices get unique IDs and can be found in dev disk by id These IDs can be used in etc fstab to mount different USB memory devices in a different way 3 3 4 1 2 USB OTG The BSP includes support for USB OTG In order to activate it you need to load appropriate module with modprobe for example the mass storage gadget g file storage which lets phyBOARD Wega behave like an USB stick dd if dev zero of tmp file img bs 1M count 64 mod
19. PHYTEC Close Microcom When you start the application via an SSH session you only see one output line When you execute the program with Microcom you see two output lines The first line is a direct output on the serial interface You can not see this line in a SSH session because you are connected over a TCP IP a connection to the target With Microcom however you have direct access to the serial interface so you can also see the line that is written to the serial console In this section you have changed an existing application You also learned how to access the serial interface First you called the function open on the device dev console The return value of this function was a file descriptor With the file descriptor you called the function write to send n bytes to the device dev console After that the file descriptor was closed with the function close This procedure is in principle quite typical for Linux because Linux treats everything like a file PHYTEC Messtechnik GmbH 2013 L 792e 0 21 phyBOARD Wega AM335x PB 00802 xxx 2 2 1 4 Starting a Program out of Eclipse on the Target After compiling a project in Eclipse the program is copied to the target and directly executed A program can also be executed on the target without compiling a project In the following section you will learn how to start a program on the target as an external tool Select Run External Tools Extern
20. Settings S COMMAND S FLAGS S OUTPUT FLAG S c PHYTEC Messtechnik GmbH 2013 L 792e 0 15 phyBOARD Wega AM335x PB 00802 xxx Select GCC C Linker Enter arm cortexa 8 linux gnueabihf gcc into the Command input field gt Resource Builders C C Build Build Variabl Discovery Environment Logging Settings Tool Chain gt General Project Refere Run Debug Sel Settings Configuration Debug Active V Tool Settings Build Steps f Build Artifact Binary Parsers Error amp C Compiler Preprocessor Symbols Includes Optimization Debugging 28 warnings Miscellaneous GCC CLinker General Libraries G3 Miscellaneous Shared Library Settings Select GCC Assembler n the Command input field change the default as to arm cortexa8 linux gnueabihf as Command arm cortexa8 linux gnueabihf gcc All options Expert settings Command lite netten S COMMAND S FLAGS S OUTPUT FLAG 5 Cancel Properties for myHelloworld gt Resource Builders C C Build Build Variabl Discovery Of Environment Logging Settings Tool Chain Ec gt General Project Refere Run Debug Sel Settings t Tool Settings Build Steps Build Artifact v amp GCC C Compiler Preprocessor 28 Symbols Includes Optimization 8 Debugging warnings Miscellaneous v
21. VCCS5V IN 5V power supply 2 GND Ground Table 4 Pin Assignment of the 2 pole PHOENIX Connector at X67 3 3 1 1 2 USB Micro AB If your board provides an USB Micro AB female connector at the upper side of the board a standard USB Micro power supply with 5 V DC can be used to supply the phyBOARD Wega Caution Do not confuse the USB Micro connector on the upper side of the board with the one on the back side of the board which provides USB OTG connectivity The USB Micro connector on the upper side is exclusively used for power supply and has no other USB functionality 3 3 1 1 3 WAGO 6 pole Male Header If a WAGO 6 pole male header is mounted on your board see Figure and Figure 3 your board is prepared to connect to a phyBOARD Wega Power Module PEB POW 01 or a custom power supply circuitry The mating connector from WAGO has 4045454120610 Use of the 6 pole connector has the following advantages e Higher and wider operate range of the input voltage External scaling potential to optimize the electrical output current e 5 V 3 3 V and backlight power supply PHYTEC Messtechnik GmbH 2013 L 792e 0 4 phyBOARD Wega AM335x PB 00802 xxx Pin assignment of the 6 pole WAGO connector Pin Signal Description 1 5 IN 5 V power supply 2 GND Ground 3 VCC3V3 PMOD 3 3 V power supply 4 VCC BL Backlight power supply 5 PMOD PWRGOOD jars Y sign
22. View of the 35 2 MR EE nc ghirucu mme ccr 3 1 2 Software easiest 4 Los Ubun eT 4 Poe ML 4 123 The GNU Cross Development Tool 5 MEME C uideri e ON 6 2 1 Installing our modified Ubuntu LiveDVD enne 6 2 2 Working with Eclipse 7 241 Programming in the C C perspeollVesuaesdenvsraiiside diia hadas ee addi 7 2 2 1 1 Work with the demo Project 7 24212 Creating a New uen a iip Di 12 2 2 1 5 Modifying the Demo 19 2 2 1 4 Starting a Program out of Eclipse on the Target 22 2 2 2 Debugging an Example Project 24 2 2 2 1 Starting the GDB server on the 25 2 2 2 2 Configuring and starting the debugger in Eclipse 25 22 23 Betting 3 Breakpoint re oria Hd adeb a t ade i nra eios 30 2 2 2 4 Stepping through and Watching Variable Contents 31 2 2 2 5 Stepping through and Changing Variable Contents 33 2 2 2 6 Using the Memory 34 Accessing the phyBOARD Wega Interfaces
23. of our phyCORE Carrier Board PCM 953 reference schematics 1 1 1 Features of the phyBOARD Wega AM335x The phyBOARD Wega AM335x supports the following features PHYTEC s phyCORE AM335x SOM with Direct Solder Connect DSC Pico ITX standard dimensions 100 mm x 72 mm Boot from MMC or NAND Flash Max 1 GHz core clock frequency Three different power supply options 5 V only with 3 5 mm combicon or micro USB connector external power module e g 12 V 24 V input voltage Two RJ45 jacks for 10 100 Mbps Ethernet e One USB Host interface brought out to an upright USB Standard A connector or at the expansion connector One USB OTG interface available at an USB Micro AB connector at the back side e One Secure Digital Multi Media Memory Card interface brought out to a Micro SD connector at the back side e CAN interface at 5x2 pin header 2 54 mm PHYTEC Messtechnik GmbH 2013 L 792e 0 1 phyBOARD Wega AM335x PB 00802 xxx Audiocodec with Stereo Line In and Line Out 3x2 pin header 2 54 mm and mono speaker 2 pole Molex RS 232 transceiver supporting UARTI incl handshake signals with data rates of up to 1 Mbps 5x2 pin header 2 54 mm Reset Button Audio Video A V connectors Expansion connector Backup battery supply for RTC with Goldcap lasts approx 17 V2 days 1 1 2 View of the phyBOARD Wega AM335x Expansion Connector A V Connector 2 3x serial TTL level SPI USB Host 4x GPIO PS Touch
24. part are being evaluated in order to take the right masseurs in purchasing or within our HW SW design Our general philosophy here is We never discontinue a product as long as there is demand for it Therefore we have established a set of methods to fulfill our philosophy Avoiding strategies e Avoid changes by evaluating long livety of parts during design in phase e Ensure availability of equivalent second source parts e Stay in close contact with part vendors to be aware of roadmap strategies Change management in case of functional changes e Avoid impacts on product functionality by choosing equivalent replacement parts Avoid impacts on product functionality by compensating changes through HW redesign or backward compatible SW maintenance Provide early change notifications concerning functional relevant changes of our products Change management in rare event of an obsolete and non replaceable part Ensure long term availability by stocking parts through last time buy management according to product forecasts e Offer long term frame contract to customers Therefore we refrain from providing detailed part specific information within this manual which can be subject to continuous changes due to part maintenance for our products In order to receive reliable up to date and detailed information concerning parts used for our product please contact our support team through the contact information given within this manua
25. the local projectroot etc network can pre up instead and rebuild the BSP PHYTEC Messtechnik GmbH 2013 L 792e 0 49 phyBOARD Wega AM335x PB 00802 xxx The information for 0 which 18 used for AM335x s CANI routed to X65 looks like root8 phyCORE AM335x ifconfig 0 canO Link encap UNSPEC HWaddr 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 inet addr 127 42 23 180 Mask 255 255 255 0 UP RUNNING NOARP MTU 16 Metric 1 packets 1284643 errors 0 dropped 0 overruns 0 frame 0 TX packets 67450 errors 0 dropped 0 overruns 0 carrier 0 collisions 0 txqueuelen 10 bytes 5138560 4 9 MiB bytes 269767 263 4 KiB Interrupt 211 The output contains a standard set of parameters also shown for Ethernet interfaces so not all of these are necessarily relevant for CAN for example the MAC address The following output parameters contain useful information You can send messages with cansend or receive messages with candump cansend canO 0x03 0x12 0x06 candump 0 See cansend help and candump help help messages for further information about using and options 50 PHYTEC Messtechnik GmbH 2013 L 792e 0 Accessing the phyBOARD Wega Interfaces 3 3 6 Audio Video connectors X70 and X71 The Audio Video A V connectors X70 and 71 provide an easy way to add typical A V functions and features to the phyBOARD Wega Standard interfaces such as parallel display PS and as well
26. 3 11 10000 myHelloWorld You have started the GDB server on the target The GDB server is now waiting for connections on TCP port 10000 2 2 2 2 Configuring and starting the debugger in Eclipse In this passage you will learn how to configure your project settings to use Eclipse with the GNU debugger After the configuration of your project settings the GNU debugger will start and connect to the GDB server on the target Start Eclipse if the application is not started yet Right click on the myHelloWorld project in the Navigator window Select Debug As Debug Configurations A dialog to create manage and run applications appears PHYTEC Messtechnik GmbH 2013 L 792e 0 25 phyBOARD Wega AM335x PB 00802 xxx Select myHelloWorld Debug under C C Application to expand it double click on it Create manage and run configurations Multiple launchers available select one to continue Bf Name myHelloWorld type filter text Main Debugger amp Source amp Source Refresh Ci Common o BEP cn Project c C C Attach to Application URN Browse Postmortem Debugger C C Application Java Applet Debug myHelloWorld Search Project Browse Java Application Ju JUnit gt Launch Group 21 Remote Java Application Filter matched 9 of 9 items amp Select the Debugger tab Debug Configurati
27. A 4 i phylivedvd workspace Helloworld Create Folder Places Name v Size Modified Q search imi Debug Yesterday at 16 53 lt Recently Used iii phylivedvd Desktop Li File System WINXPSP3 Speicher E 52 GBFilesys 1 425 cn Select root directory of the projects to import PHYTEC Messtechnik GmbH 2013 L 792e 0 phyBOARD Wega AM335x PB 00802 xxx Select Finish to import the project Import Projects Select a directory to search for existing Eclipse projects 4 Select root directory home phylivedvd workspace Browse Select archive file Projects amp Helloworld home phylivedvd workspace Hellowc Select All Deselect All Refresh 1 Copy projects into workspace Working sets Add project to working sets OE cnet The HelloWorld program will be compiled and the HelloWorld executable is built for the target Then Hello World file is copied to the target using secure copy After file has been copied to the target the program is executed on the target using SSH Because this is our first SSH connection we must accept the fingerprint with yes 10 PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Started You will see the following content in the Console window VMware Player Non commercial use only File Virtual Machine Help C C HelloWorld HelloWorld
28. EC System on Module SOM modules phyBOARD Wega Boards are designed for evaluation testing and prototyping of PHYTEC System on Module in laboratory environments prior to their use in customer designed applications 3 1 Concept of the phyBOARD Wega The phyBOARD Wega provides a flexible development platform enabling quick and easy start up and subsequent programming of its soldered phyCORE AM335x System on Module The carrier board design allows easy connection of additional extension boards featuring various functions that support fast and convenient prototyping and software evaluation The carrier board is compatible with phy CORE AM335x only This modular development platform concept includes the following components the phyCORE AM335x module populated by default with the AM3354 processor and all applicable SOM circuitry such as DDR SDRAM Flash PHYs and transceivers to name a few the phyBOARD Wega which offers all essential components and connectors for start up including A power socket which enables connection to an external power adapter interface connectors such as DB 9 USB and Ethernet allowing for use of the SOM s interfaces with standard cable The following sections contain specific information relevant to the operation of the phyCORE AM335x mounted on the phyBOARD Wega Carrier Board PHYTEC Messtechnik GmbH 2013 L 792e 0 37 phyBOARD Wega AM335x PB 00802 xxx 3 2 Overview of the phyBOARD Wega Peripherals Th
29. PB 00802 xxx Clean will discard all build problems and built Lee The projects will be rebuilt from scratch Clean all projects Clean projects selected below HelloWorld m y H Wo d Confirm with OK The project will be rebuilt Select the Console tab If no errors occur while building the project you will see the following output Problems Tasks El Console 82 amp Properties 9 A GE BB r Bw rj CDT Build Console myHelloworld Build of configuration Debug for project myHelloWorld make all Building file myHelloWorld c Invoking GCC C Compiler arm cortexa8 linux gnueabihf gcc 00 g3 Wall c fmessage length 0 MMD MP MF myHelloWorld d MT myHelloWorld d o myHelloWorld o myHelloWorld c Finished building myHelloWorld c Building target myHelloWorld Invoking GCC C Linker arm cortexa8 linux gnueabihf gcc o myHelloworld myHelloWorld o Finished building target myHelloWorld make no print directory post build scp myHelloWorld root 192 168 3 11 home ssh root 192 168 3 11 myHelloWorld Welcome to the World of PHYTEC Build Finished You have successfully created your first own project with the Eclipse IDE You have configured the project to create an application for your target platform 18 PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Started 2 2 1 3 Modifying the Demo Application No
30. PB 00802 xxx Ordering Information Ordering numbers phyBOARD Wega AM335x Development Kit KPB 00802 xxx phyBOARD Wega AM335x SBC PB 00802 xxx In order to receive product specific information on changes and updates in the best way also in the future we recommend to register at http www phytec de de support registrierung html or http www phytec eu europe support registration html For technical support and additional information concerning your product please visit the support section of our web site which provides product specific information such as errata sheets application notes FAQs etc http www phytec de de support faq faq phy BOARD Wega AM335x html or http www phytec eu europe support faq faq phy BOARD Wega AM335x html Declaration of Electro Magnetic Conformity of the PHYTEC phyBOA RD Wega AM335x PHYTEC Single Board Computers henceforth products are designed for installation in electrical appliances or as dedicated Evaluation Boards 1 for use as a test and prototype platform for hardware software development in laboratory environments Caution PHYTEC products lacking protective enclosures are subject to damage by ESD and hence may only be unpacked handled or operated in environments in which sufficient precautionary measures have been taken in respect to ESD dangers It is also necessary that only appropriately trained personnel such as electricians technicians and engineers handle and or operate
31. SYNC LCD Vertical Synchronisation 36 GND Ground 37 GND Ground 38 X OUT Pulse Wide Modulation 39 VCC BL Backlight power supply 40 5 5 V power supply Table 8 PHYTEC A V connector X70 Pin Signal Name Description 1 X DS PS Clock 2 125 PS Frame 3 X DS ADC PS Analog Digital converter microfone 4 X DS DAC PS Digital Analog converter speaker 9 X AV INT GPIOI 30 A V interrupt GPIO1_30 6 X MCASPO AHCLKX McASPO high frequency clock 7 GND Ground 8 nRESET OUT Reset 9 TS Touch X 10 TS X Touch X 11 TS Touch Y 12 TS Y Touch Y 13 VCC3V3 3 3 V power supply 14 GND Ground 15 X 12 0 SCL PC Clock 16 X 12 0 SDA PC Data Table 9 PHYTEC A V connector X71 70 PHYTEC Messtechnik GmbH 2013 L 792e 0 Advanced Information 4 6 2 Software Implementation 4 6 3 Audio 15 Audio support on the module is done via the I2S interface and controlled via I2C On the phyBOARD Wega the audio codec s registers can be accessed via the I2CO interface at address 0x18 7 bit MSB addressing As of the printing of this manual the BSP delivered with the phyCARD Wega Am335x does not support the audio interfaces Please visit the PHY TEC website for a road map of the BSP 4 6 4 Connectivity The interface of the AM335x is available at different connectors on the phyBOARD Wega The following table provides a list of the connectors and pins with connectivity Connector Location Expansion conn
32. a AM335x PHYTEC Messtechnik GmbH 2013 L 792e 0 3 phyBOARD Wega AM335x PB 00802 xxx 1 2 Software Overview 1 21 Ubuntu Ubuntu which you can find on the phyBOARD Wega AM335x Kit DVD is a free and open source operating system based on Debian Linux Basically it is designed for desktop use Web statistics suggest that Ubuntu is one of the most popular operating systems in the Linux desktop environment The Ubuntu release which we deliver is 12 04 3 and was released on 15 February 2013 Ubuntu 12 04 code name Precise Pangolin is designated as a Long Term Support LTS release and the first stable release was on 26 April 2012 LTS means that it will be supported and updated for five years Our Ubuntu version comes with Unity as desktop environment dpkg as package management system the update method is based on APT Advanced Packaging Tool and the user space uses GNU 1 2 2 Eclipse The Eclipse platform provides support for development Because the Eclipse platform is only a framework for developer tools it doesn t support directly instead it uses external plug ins This Application Guide shows you how to make use of the CDT set of plug ins for development in conjunction with the GCC tool chain The CDT is an open source project licensed under the Common Public License implemented purely in Java as a set of plug ins for the Eclipse SDK platform These plug ins add a perspective to
33. al connected 10 reset 6 PMOD PWRFAIL Power fail signal Table 5 Pin Assignment of the 6 pole WAGO Connector at X67 A detailed description of the Power Module for phyCORE Wega can be found in the Application Guide for phyBOARD Wega AM335x Expansion Boards L 793e_0 3 3 1 2 Power LED 058 The red LED 058 right next to the power connector see Figure indicates the presence of the 3 3 V supply voltage generated from the 5 V input voltage 3 3 1 3 VBAT and RTC On the phyBOARD Wega the internal RTC of the AM335x is used for real time or time driven applications To backup the RTC on the module a goldcap C339 is placed on the phyBOARD Wega This voltage source supplies the backup voltage domain VBAT of the AM335x which supplies the RTC and some critical registers when the primary system power VCC5V_IN is removed The backup supply lasts approximately 17 1 days 42 PHYTEC Messtechnik GmbH 2013 L 792e 0 Accessing the phyBOARD Wega Interfaces 3 3 2 RS 232 Connectivity X66 E Figure 4 RS 232 Interface Connector X66 Pin header connector X66 located next to the USB host connector see Figure 1 provides the UARTI signals of the AM335x at RS 232 level The serial interface is intended to be used as data terminal equipment DTE and allows for a 5 wire connection including the signals RTS and CTS for hardware flow control Table 6 below shows the signal mapping of the RS 232 level signals at connector X66
34. al Tools Configurations from the menu bar External Tools Configurations Create manage and run configurations Q Run a program v Configure launch settings from this dialog Press button to create a configuration of the selected type B Press the Duplicate button to copy the selected configuration Ant Build pep Use Report X Press the Delete button to remove the selected configuration 3 Press the Filter button to configure filtering options Q New configuratiol Edit or view an existing configuration by selecting it Configure launch perspective settings from the Perspectives preference page Filter matched 4 of 4 iten Close Under Program select New configuration 1 22 PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Started n the Name input field enter myHelloWorld Target Create manage and run configurations Q Please specify the location of the external tool you would like bd configure Ant Build Location API Use Report A29 Y Q Program Browse Workspace Browse File System Variables Q New configuration Working Directory Browse Workspace Browse File System Variables Arguments Variables Note Enclose an argument containing spaces using double quotes Appl Revert Filter matched 4 of 4 item 9 Close Enter usr bin ssh in the Location input field
35. ariables window Registers Modules Breakpoints 09 Variables 23 amp buf i Oxbedd3c47 buf 0 69 buf 1 buf 2 69 buf 3 buf 4 66 69 buf 5 09 buf 6 09 buf 7 buf 8 09 buf 9 buf 10 69 buf 11 Click Step Over button in the Debug window to step to the next line You will see the content of the buf variable in the Variables window PHYTEC Messtechnik GmbH 2013 L 792e 0 31 phyBOARD Wega AM335x 00802 Click on the variable buf 69 buf 0 buf 1 09 buf 2 buf 3 09 buf 4 69 buf 5 09 buf 6 69 buf 7 09 buf 8 69 buf 9 09 buf 10 60 buf 11 09 buf 12 69 buf 13 4 gt welcome to the World of PHYTEC serial n Then click the button Step into to enter the function write tty The debugger stops in write_tty You will see the following variable window Breakpoints 09 Variables 53 gt i Registers m Modules buffer i Oxbef9ec47 69 count 48 69 out 10 32 PHYTEC Messtechnik GmbH 2013 1 792 0 Getting Started Click on the variable buffer You will probably see a different address on the buffer pointer Remember what address is shown in your case you will need this address later 2 2 2 5 Stepping through and Changing Variable Contents In this section you will change the value of a variable At the end o
36. articular connector interface and associated jumpers for configuring that interface 3 31 Power Supply Caution Do not change modules or jumper settings while the phyBOARD Wega is supplied with power 3 3 1 1 Power Connectors X67 and X72 The phyBOARD Wega is available with three different power supply connectors Depending on your order you will find one of the following connectors on your SBC 1 a 2 pole PHOENIX base strip 3 5 mm connector suitable for a single 5 V supply voltage or 2 an USB Micro AB connector to connect a standard 5 V USB power supply or 3 6 pole WAGO male header to attach the Power Module for phyBOARD Wega PEB POW 01 which provides connectivity for 12 V 24 V The required current load capacity for all power supply solutions depends on the specific configuration of the phyCORE mounted on the phyBOARD Wega the particular interfaces enabled while executing software as well as whether an optional expansion board is connected to the carrier board A 5 V adapter with a minimum supply of 1 5 A is recommended PHOENIX base strip WAGO male header 6 pole Figure 3 Power Supply Connectors 40 PHYTEC Messtechnik GmbH 2013 L 792e 0 Accessing the phyBOARD Wega Interfaces 3 3 1 1 1 PHOENIX 2 pole Base Strip The permissible input voltage is 5 V DC if your SBC is equipped with a 2 pole PHOENIX connector Figure 3 and the following table show the pin assignment Pin Signal Description 1
37. as different supply voltages are available at the two A V female dual entry connectors Special feature of these connectors are their connectivity from the bottom or the top For further information of the A V connectors see chapter 4 6 1 Information on the expansion boards available for the A V Connecctors can be found in the Application Guide for phyBOARD Wega Expansion Boards L 793e 0 3 3 7 Expansion connector X69 The expansion connector X69 provides an easy way to add other functions and features to the phyBOARD Wega Standard interfaces such as JATG UART 2 SPI and as well as different supply voltages and some GPIOs and Analog Inputs are available at the expansion female connector The pinout of the expansion connector is shown in Secure Digital Memory Card MultiMedia Card X11 For further information of the expansion connector see see chapter 4 6 5 Information on the expansion boards available for the expansion connecctor can be found in the Application Guide for phyBOARD Wega Expansion Boards L 793e 0 3 3 8 Secure Digital Memory Card MultiMedia Card X11 ANTE De ime i h 1 5 er Figure 11 SD Card interface at connector X11 The phyBOARD Wega provides a standard microSDHC card slot at 11 for connection to SD MMC interface cards It allows easy and convenient connection to peripheral devices like SD and MMC cards Power to the SD interface is supplied by inser
38. bug perspective opens and the debugger stops automatically at the first line The host s GDB is now connected to the GDB server on the target LiveDVD_tester VMware Player Non commercial use only e VirtualMachine Help Debug myHelloWorld myHelloWorld c Eclipse Platform W 14 9 4 32PM 0 File Edit Source Refactor Navigate Search Run Project Window Help riv 4 By Ov Gy vr sd E ss pebug 1010 vr pe 4 1010 3 3 Debug X o gt iai gt o Variabl 23 N 9e Breakp Regist B Module g 1 Mi v c myHelloworld Debug C C Application xs Em E F3 amp 1 nis n scis A 1 read uspended Breakpoint hit gt bur exbeneccsa 1main myHelloworld c 36 0x000084e8 i pl opt OSELAS Toolchain 2012 12 1 arm cortexa8 linux gnueabihf gcc 4 7 3 2 opt PHYTEC_Tools myHelloworld Debug myHelloworld 11 21 13 4 32 F D erem gt E 8 myHelloworld c lt Outline lt EI int out variable for file describtor 2 XV out open dev console 0 RDWR open interface unistd h write out buffer count write n bytes a3 fcntLh close out close the serial interface stdio h int main void 1 char buf EIUS output variable Welcome to the World of PHYTEC serial n write tty buf sizeof buf 1 wri
39. c Eclipse Platform de Tp D 3 55 File Edit Source Refactor Navigate Search Run Project Window Help ri Gv Gy amp v Br Hr OF Q 7 ME Biv t Oy Projec XN Qt ce 7 o 19 Helloworld c 5 2 Es A wx Y Vs stdio h gt 3 Binaries include lt stdio h gt e main void int gt igi Includes gt amp Debug gt Helloworld c printf Welcome to the World of PHYTEC n return 0 z 7 z B sc 0 72 int main void m Problems 4 Tasks El Console X EiProperties 4 4 5 LB BB E Elv CDT Build Console Helloworld Build of configuration Debug for project HelloWorld make all Building target HelloWorld Invoking GCC C Linker arm cortexa8 linux gnueabihf gcc o HelloWorld HelloWorld o Finished building target HelloWorld make no print directory post build scp HelloWorld root 192 168 3 11 home ssh root 192 168 3 11 HelloWorld Warning Permanently added 192 168 3 11 RSA to the list of known hosts Welcome to the World of PHYTEC Build Finished y Writable Smartinsert 27 2 grab input press Ctrl G Bom ELFE select Project Clean You have successfully passed the first steps with the Eclipse IDE You are now able to import existing projects into the Eclipse workspace You If the project
40. can see faster which changes are important to execute this Quickstart in case you don t want to use our modified Ubuntu version You can find a step by step instruction of the essential changes in order to modify your own distribution distributions or versions If you want to use another distribution it might take a lot of individual initiative We do not support other distributions We can t guarantee that the presented changes are compatible to other You should be sure about what you do 4 5 1 Essential settings In the following you see a short instruction of the important settings which are essential to guarantee the execution of the examples in this Application Guide 4 5 1 4 Installation of software packages At first various software packages required must be installed using the package manager APT To gain a better understanding of the packages required they are installed separately according to their function 1 Packages which are needed for compiling and building the Board Support Package sudo apt get y install libncurses dev gawk flex bison texinfo gettext 2 Packages fordevelopoment sudo apt get y install vim eclipse 3 Packeges to set up the TFTP server sudo apt get y install tftpd hpa During installation it can happen that some programs ask for a license agreement Just go threw the steps The first preparations are completed In the next sections you will proceed with the installation of E
41. clipse and the set up of the TFTP server 66 PHYTEC Messtechnik GmbH 2013 L 792e 0 Advanced Information 4 5 1 2 Setting up Eclipse and integrate plug ins The instructions in this chapter show how to setup Eclipse and integrate the plug ins for QT and C C Thereby you can assign own programs written in Eclipse to the target First you must create a workspace folder in which you can save your Eclipse projects In the example this is done in the home folder mkdir home USER workspace Thereafter you can open Eclipse and insert the path to the created workspace in the pop up window eclipse Eclipse is started and now we click at Help in the menu nstall new Software Thereupon a window was opened and in the text field Work with we enter the following address http download eclipse org tools cdt releases indigo and click on Add After a while the software which we can integrate appears in the area with a scrollbar Wecheck Main Features and click at Now the system shows us an overview ofthe installation details which we skip with a click on Next At last the system shows us the licensing agreement which we accept and after we have clicked on Finish it begins to install the required software The CDT plug in is installed We close Eclipse and go on with the QT integration Forthe QT integration you must use an external package from the Nokia website This package is already available o
42. ct Select Paste Double click on HelloWorld c in the myHelloWorld project 14 PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Started If Build Automatically from the Project menu is selected the HelloWorld application will now be compiled and created with the standard GCC compiler suitable for your host machine You will find the executable file which can only run on your host system in the workspace myHelloWorld Debug directory To compile your project for the phyCORE AM335x instead you will have to use the GNU cross compiler Right click the myHelloWorld project and choose Properties The Properties dialog appears Select C C Build Enter arm cortexa8 linux gnueabihf gcc into the Command input field Properties for myHelloworld Settings gt Resource Builders Configuration Debug Active 2 M C C Build Build Variabl Discovery v Tool Settings Steps Build Artifact Binary Parsers Error Parsers Environment 5 TM gt GCC C Compiler Command arm cortexa8 linux gnueabihf gcc ogging m Preprocessor Alloptions O0 g3 Wall c fmessage length o Settings N Symbols Tool Chain Includes gt General Project Refere Debugging Run Debug Se 8 Warnings Optimization Expert settings Command 5 Mi Miscellaneous line pattern v GCCCLinker General Libraries Miscellaneous Shared Library
43. cts In this section you learned how to download images from a tftp server into the RAM of the target The images have been written from RAM to flash and finally the target was started with the new images PHYTEC Messtechnik GmbH 2013 L 792e 0 63 phyBOARD Wega AM335x PB 00802 xxx 4 4 Updating the software If you found a newer BSP on our ftp server ftp ftp phytec de pub Products and want to flash it this chapter shows how to do Also in case that your phyBOARD Wega AM335x doesn t start anymore because you damaged its software during the previous chapter you re right here too In the latter case you ll find all needed original images on the DVD under PHYTEC BSP 441 Creating a bootable SD card In case that your phyBOARD Wega AM335x doesn t start anymore due to a damaged bootloader you need to boot from an SD card This SD card must be formatted in a special way because the AM335x doesn t know anything about file systems Instead it s hard coded at which sectors of the SD card the AM335x expects the bootloader to be Use the following script on order to get an SD card properly formatted bin bash if SI dev sda then unset LANG DRIVE 1 umount SDRIVE 1 umount SDRIVE 2 if b SDRIVE then dd if dev zero of SDRIVE bs 1024 count 1024 SIZE fdisk 1 SDRIVE grep Disk awk print 5 echo DISK SIZE SSIZE bytes CYLINDERS echo SIZE 255 63 512 bc echo CYLINDERS
44. d Pin Headers Note Ensure that all module connections are not to exceed their expressed maximum voltage or current Maximum signal input values are indicated in the corresponding controller User s Manual Data Sheets As damage from improper connections varies according to use and application it is the user s responsibility to take appropriate safety measures to ensure that the module connections are protected from overloading through connected peripherals 38 PHYTEC Messtechnik GmbH 2013 L 792e 0 3 2 2 LEDs Accessing the phyBOARD Wega Interfaces The phyBOARD Wega is populated with three LEDs to indicate the status of the USB VBUS voltages as well as of the power supply voltage Figure I shows the location of the LEDs Their function is listed in the table below LED Color Description D7 green Indicates presence of VBUSI at the USB Host interface 3 3 4 D8 green Indicates presence of VBUSO at the USB interface 3 3 4 D58 red 3 3 V voltage generation of the phyBOARD Wega Le m Table3 phyBOARD Wega LEDs Descriptions Note Detailed descriptions of the assembled connectors jumpers and switches can be found in the following chapters PHYTEC Messtechnik GmbH 2013 L 792e 0 39 phyBOARD Wega AM335x PB 00802 xxx 3 3 Functional Components on the phyBOARD Wega Board This section describes the functional components of the phyBOARD Wega Each subsection details a p
45. dditional information on the A V connector Please refer to the audio codec s reference manual for additional information regarding the special interface specification PHYTEC Messtechnik GmbH 2013 L 792e 0 47 phyBOARD Wega AM335x PB 00802 xxx 3 3 5 1 Software Implementation Audio support on the module is done via the I2S interface and controlled via I2C On the phyBOARD Wega the audio codec s registers can be accessed via the I2CO interface at address 0x18 7 bit MSB addressing As of the printing of this manual the BSP delivered with the phyCARD Wega Am335x does not support the audio interfaces Please visit the PHYTEC website for a road map of the BSP CAN Connectivity The CANI interface of the phyBOARD Wega AM335x is accessible at connector X65 2x5 2 54 mm pin header Jumper JP3 can be installed to add a 120 Ohm termination resistor across the CAN data lines if needed JP Figure 9 Components supporting the CAN Interface Table 7 below shows the signal mapping of the CANI signals at connector X65 Pin Signal Pin Signal 1 NC 2 GND 3 X CANL 4 X CANH 5 GND 6 NC 7 NC 8 NC 9 Shield 10 NC Table 7 Pin Assignment of CAN Connector X65 48 PHYTEC Messtechnik GmbH 2013 L 792e 0 Accessing the phyBOARD Wega Interfaces An adapter cable is included in the phyBOARD Wega Am335x Kit to facilitate the use of the CAN interface The following figure shows the sig
46. e Choose a workspace folder to use for this session Workspace 20701 E Browse Use this as the default and do not ask again PHYTEC Messtechnik GmbH 2013 L 792e 0 7 phyBOARD Wega AM335x PB 00802 xxx Now you can see the Eclipse workbench Eclipse Platform File Edit Source Refactor Navigate Search Run Project Window Help r Gv 8 Gy 0 4 gt 2 An outline is not available Problems j Tasks El Console X Properties ri Bn No consoles to display at this time First we will import an existing project Select File Import from the menu bar Select Existing Projects into Workspace and click Next Select 24 Create new projects from an archive file or directory 151 Select an import source amp General Archive File C3 File System EX Preferences Y amp 8 PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Started Select Browse Import Projects Select a directory to search for existing Eclipse projects 7 6 Select root directory Browse Browse Select archive file Projects Select All Deselect All Refresh 1 Copy projects into workspace Working sets Add project to working sets Select Back Next gt Cancel Finish Double click the Hello World directory under home phylivedvd workspace Click OK E
47. e phyBOARD Wega is depicted in Figure It features many different interfaces and is equipped with the components as listed in Table 2 and Table 3 For more detailed description of each peripheral refer to the appropriate chapter listed in the applicable table Figure 1 highlights the location of each peripheral for easy identification 3 2 1 Connectors and Pin Header Table 2 lists all available connectors on the phyBOARD Wega Figure 1 highlights the location of each connector for easy identification Description Eee Designator Section Secure Digital Multi Media Card Micro slot 3 3 8 X15 USB Host connector USB 2 0 Standard A 3 3 4 X16 Ethernet 0 connector RJ45 with speed and link LED 3 3 3 X17 Ethernet 1 connector RJ45 with speed and link LED 3 3 3 X42 USB On The Go connector USB Micro AB 3 3 4 X55 Mono Speaker output 2 pole Molex 4 2 X65 CAN connector 5x2 pin header 0 X66 RS 232 with RTS and CTS UARTI 5x2 pin header 222 Power supply 5 V only 6 pole WAGO male header 3 3 7 7 2 pole PHOENIX base strip X69 Expansion connector 2x30 socket connector 3 3 7 X70 A V connector 1 2x20 socket connector 3 3 6 X71 A V connector 2 2x8 socket connector 3 3 6 X72 Optional 5 V power supply via USB Micro AB connector 3 3 1 1 X73 Stereo Line Out and Line In connector 3 3 5 2x3 pin header Table 2 phyBOARD Wega Connectors an
48. ect platforms and configurations you wish to deploy on Project type Executable Toolchains Linux GCC Configurations Debug Release 22 Use Advanced settings button to edit project s properties Additional configurations can be added after project creation Use Manage configurations buttons either on toolbar or on property pages 0 PHYTEC Messtechnik GmbH 2013 1 792 0 13 phyBOARD Wega AM335x PB 00802 xxx You will see the IDE with the myHelloWorld project Double Click the Hello World project which we have worked with previously Eclipse Platform k File Edit Source Refactor Navigate Search Run Project Window Help Fiv D G v dv Gr Br Hr Or Qv e 83 B BEE O xN ELI An outline is not available gt i Helloworld myHelloworld Problems Tasks El Console X E Properties 9 5 ER Ga CDT Build Console myHelloworld Build of configuration Debug for project myHelloWorld Nothing to build for project myHelloWorld myHelloworld Right click on HelloWorld c in the HelloWorld project Select Copy Project Explorer x 285 v HelloWorld P Binaries Includes g Debug lt HelloWorld c HelloWorld myHelloworld a Includes Select the myHelloWorld project Right click the myHelloWorld proje
49. ector X69 pin 11 SDA pin 13 SCL A N connector X71 pin 16 SDA pin 15 SCL Table 10 Connectivity To avoid any conflicts when connecting external devices to phyBOARD Wega the addresses of the on board devices must be considered Table 11 lists the addresses already in use The table shows only the default address PHYTEC Messtechnik GmbH 2013 L 792e 0 71 phyBOARD Wega AM335x PB 00802 xxx Board Prod No Device Address used 7 MSB EEPROM 0x52 phyCORE AM335x PCL 051 RTC 0x68 PMIC Ox2D 0x12 phyBOARD Wega PBA CD 02 Audio 0 18 AV Adapter HDMI PEB AV 01 an CEC Core 0x34 AV Adapter Display PEB AV 02 GPIO Expander 0x41 Evaluation Board PEB EV AL 01 EEPROM 0x56 GPIO Expander 0x20 M2M Board PEB C 01 GPIO Expander 0x21 GPIO Expander 0x22 Table 11 Addresses in Use 4 6 5 Expansion connector The expansion connector X69 provides an easy way to add other functions and features to the phyBOARD Wega Standard interfaces such as UART SPI and as well as different supply voltages and some GPIOs are available at the expansion female connector The pinout of the expansion connector is shown in Secure Digital Memory Card MultiMedia Card X11 Pin Signal Name Description 1 VCC3V3 3 3 V power supply 2 5 5 V powe
50. em Level Hardware Information esses eene eene enne 69 4 6 1 Audio Video CODHOCIOES iuc a eet rer hb Ri A Ha UU d ded PRESE 69 4 0 2 Software ImplermentatlODL 71 DRE Ua e E 71 1045 WC 71 4 6 5 Expansion Connector ccce catene equis veo rbd dire pete 12 4 6 5 1 Software Implementation seen 74 4 6 0 SPI Connectivity 74 4 6 7 User programmable 74 4 6 7 1 Software Implementation 74 MEME A2 IBI CURRO 76 Inr A 77 PHYTEC Messtechnik GmbH 2013 L 792e 0 Contents List of Figures Figure 1 View of the 335 teta tne totae aen nean 2 Figure 2 Block Diagram of the 35 3 Figure 3 Power Supply Connectors 40 Figure 4 RS 232 Interface Connector X66 43 Figure 5 RS 232 Connector Signal Mapping sess esee eene eene entente 43 Figure 6 Ethernet Interfaces at Connectors X16 and X17 sese 44 Figure 7 Components supporting the USB 45 Figure 8 Audio Interfaces at Connectors X55 and X73 eese 47 Figure 9 Components supporting the CAN Interface
51. ered disk probe buswidth nand ONFI param page 0 valid nand ONFI flash detected device Manufacturer ID 2 Chip ID Micron 29 4608 4 512MiB page size 2048 00 size 64 booting from NAND barebox 2013 11 0 PD13 0 0 phyBOARD WEGA 1 Fri Nov 15 09 09 47 2013 Board Phytec phyBOARD WEGA AM335x omap hsmmc omap4 hsmmc0 registered as omap4 hsmmco mci0 registered 915 0 cpsw cpsw0 detected phy mask 0x3 mdio bus miibus0 probed eth0 got preset MAC address C4 ED BA 88 BA 9D i2c omap i2c am33xx0 bus 0 rev0 11 at 100 kHz probe buswidth nand ONFI param page 0 valid nand ONFI flash detected nand NAND device Manufacturer ID 2 Chip ID Micron MT29F4G08ABADAHA 512MiB page size 2048 00 size 64 malloc space 0x83ff4000 0x87ff3fff size 64 MiB envfs wrong magic on no valid environment found on dev env Using default environment running env bin init Hit m for menu or any other key to stop autoboot 3 type exit to get to the menu barebox Phytec phyBOARD WEGA AM335x Check the network settings with following command 0 devinfo eth The target should present the this lines ipaddr 192 168 3 11 netmask 255 255 255 0 gateway 255 255 255 0 serverip 192 168 3 10 If you need to change something type edit env network eth0 edit the settings save them by leaving the editor with Strg D
52. ese drivers might be helpful for you even though they are usually not tested 4 67 User programmable GPIOs There are different User programmable GPIOs available The signals are available on the expansion connector or the corresponding expansion boards like PEB EVAL 01 For more information look at Application Guide for the Expansion Boards or section Expansion connector in the System Guide 4 6 7 1 Software Implementation For setting and resetting the green user LED on the expansion board just enter cd sys devices platform leds gpio leds peb eval O01 green led3 echo 1 brightness echo 0 brightness 74 PHYTEC Messtechnik GmbH 2013 L 792e 0 Advanced Information For getting values from the three user buttons on the expansion board just enter cd sys class gpio echo 20 export echo 7 export echo 106 export and get the values with cat gpio20 value cat gpio7 value cat gpiol06 value PHYTEC Messtechnik GmbH 2013 L 792e 0 75 76 phyBOARD Wega AM335x PB 00802 xxx 5 Revision History Changes in this manual 25 11 2013 Manual First edition L 792e 0 Describes phyBOARD Wega AM335x SOM 1397 0 with phyBOARD Wega Carrier Board PCB PHYTEC Messtechnik GmbH 2013 L 792e 0 Index B ertet eee eee e teet eo vete dva us 1 L LINK LED isorinis 44 P phyBOARD Wega Connectors La esser m m EE Fb ita 3 PHYTEC Messtechnik GmbH 2013 L 792e 0
53. eset button at S2 Pressing this button will toggle the X nRESET IN pin X64A11 of the phyCORE SOM low causing the module to reset Additionally a reset is generated on nRESET OUT to reset peripherals Figure 12 System Reset Button S2 PHYTEC Messtechnik GmbH 2013 L 792e 0 55 phyBOARD Wega AM335x PB 00802 xxx 3 3 12 1 Software Implementation See chapter 3 3 9 1 56 PHYTEC Messtechnik GmbH 2013 L 792e 0 Advanced Information 4 Advanced Information 4 1 About this Section This Section addresses advanced developers who want to configure build and install a new kernel and file system design custom expansion boards or display adapters It includes the following information Step by step instructions on how to configure build and install a new kernel and file system using the Live DVD An explanation on how to set up PTXdist and the BSP on your Linux Host PC description how to update the Bootloader and how to write the Kernel and Root File System into the Flash from within your own Linux system Detailed information on the different interfaces and features of the phyBOARD Wega at a system level 4 2 Software Overview In the chapter 2 you have learned how to work with Eclipse The following section shows you how to work with PTXdist PTXdist is a GPL licensed tool for userlands started by Pengutronix a close partner of PHYTEC It is mainly a development environment to build your own embedded linux
54. eup 40 X INT RTCn Interrupt from the RTC 4 GND Ground 42 X GPIO3 7 GPIO3 7 Caution Also connected to power fail signal through R415 43 nRESET IN Push button reset AA X GPIO3 8 GPIO 3 8 Caution Also connected to power down circuit through R412 45 X_AM335_NMIn AM335x non maskable interrupt 46 GND Ground 47 X_AIN4 Analog input 4 PHYTEC Messtechnik GmbH 2013 L 792e_0 13 phyBOARD Wega AM335x PB 00802 xxx 48 X AIN5 Analog input 5 49 AIN6 Analog input 6 50 X_AIN7 Analog input 7 51 GND Ground 52 X_USB1_DRVVBUS USB 1 bus control output 53 X_USB1_ID USB 1 port identification 54 USB1_VBUS USB 1 bus voltage 55 X_USB1_CE USB 1 charger enable 56 GND Ground 57 X_PMIC_POWER_EN Enable Power Management IC for AM335x 58 X PB POWER Power On for Power Management IC for AM335x 59 GND Ground 60 5 IN 5 V input supply voltage Table 12 Expansion Connector X69 4 6 5 1 Software Implementation 4 6 6 SPI Connectivity The driver for SPI can be accessed by its API within the kernel If you connect a chip to SPI you should implement its driver into the kernel as well The SPI driver offers no dev spi entry in userspace because using it would mean to place the driver for your chip in userspace too what most probably would not be useful Please note that the BSP already includes a couple of deactivated drivers for various chips Th
55. ev ttyO5 for 5 would need some development 3 3 3 Ethernet Connectivity X16 and X17 The Ethernet interfaces of the phyBOARD Wega are accessible at two RJ45 connectors X16 and X17 on the board 1 Figure 6 Ethernet Interfaces at Connectors X16 and X17 Ethernet O interface is available at X16 while Ethernet 1 interface is brought out at X17 Both Ethernet interfaces are configured as 10 100Base T networks The LEDs for LINK green and SPEED yellow indication are integrated in the connector Both LANS 710AI Ethernet transceivers support HP Auto MDIX technology eliminating the need for the consideration of a direct connect LAN cable or a cross over path cable They detect the TX and RX pins of the connected device and automatically configure the PHY TX and RX pins accordingly 44 PHYTEC Messtechnik GmbH 2013 L 792e 0 Accessing the phyBOARD Wega Interfaces 3 3 3 1 Software Implementation The two 10 100 Mbit Ethernet interfaces are being provided as network interfaces eth0 with static IP 192 168 3 11 and with static IP 192 168 4 11 by default Both interfaces offer a standard Linux network port which can be programmed using the BSD socket interface 3 3 4 USB Connectivity X15 and X42 The phyBOARD Wega provides one USB Host and one USB OTG interface USBO is accessible at connector X42 USB Micro AB located at the back side of the phyBOARD Wega It is configured as USB OTG USB
56. f this part you will see the effect of this change Select the count variable in the Variables window Right click on count and select Change Value Change the value of count to 7 and click OK Enter a new value for count 7 Open Microcom if the application is not already opened Go back to Eclipse Click the Step Overbutton two times Switch to Microcom root phyBOARD WEGA AM335x gdbserver 192 168 3 11 10000 myHelloWorld Process myHelloWorld created pid 827 Listening on port 10000 Welcome to the World of PHYTEC serial Remote debugging from host 192 168 3 10 Welcome You will see the output Welcome in the Microcom window This shows when changing the counter vanable s value to 7 only the first seven characters of the buffer are displayed instead of the whole sentence PHYTEC Messtechnik GmbH 2013 L 792e 0 33 phyBOARD Wega AM335x 00802 2 2 2 6 Using the Memory Monitor In the last section of this chapter you will use the memory monitor to control the content at a memory address Select the Memory tab Click Add Memory Monitor Enter the address of buffer and click OK Remember that the variable s address might be different on your system Enter address or expression to monitor o Change the size of the window Console j Tasks Problems Executables 0 Memory 53 gt 5 r4 tov Y BEF9ECSO 6F207468
57. he drop down box Debug Configurations Create manage and run configurations Bp Name myHelloworld Debug Main Arguments 8 Environment 5 Debugger 5 Source Refresh v E Application Debugger gdbserver 5 c myHelloworld Debug Attach to Applica Stop onstartup at main Advanced 2 C C Postmortem Deb Debugger Options C C Remote Applicati Eclipse Application Java Applet TCP G1 Java Application Je J nit address 192 168 3 11 Ju JUnit Plug in Test Main Shared Libraries Connection 10000 Launch Group OSGi Framework Z Remote Java Applicatio N sing Standard Create Process Launcher Select other Apply Revert Filter matched 13 of 13 item Enter 192 168 3 11 the target s IP address in the Host name input field The host s GDB will connect to this IP address to communicate with the target s GDB server Click Apply Click Debug A new dialog appears Select Yes to switch to the Debug perspective This kind of launch is configured to open the Debug perspective when it es suspends This Debug perspective is designed to support application debugging It incorporates views for displaying the debug stack variables and breakpoint management Do you want to open this perspective now Remember my decision 28 PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Start ed The de
58. ideo A V connectors X70 and 71 provide an easy way to add typical A V functions and features to the phyBOARD Wega Standard interfaces such as parallel display PS and as well as different supply voltages are available at the two A V female dual entry connectors Special feature of these connectors are their connectivity from the bottom or the top The pinout of the A V connectors are shown in Table 8 and Table 9 Pin Signal Name Description 1 GND Ground 2 X LCD 021 LCD D21 3 X LCD 018 LCD D18 4 X LCD 16 LCD D16 5 X LCD DO LCD DO 6 GND Ground 7 X LCD DI LCD DI 8 X LCD D2 LCD D2 9 X LCD D3 LCD D3 10 X LCD 4 LCD D4 11 GND Ground 12 X LCD D22 LCD D22 13 X LCD 019 LCD D19 14 X LCD D5 LCD D5 15 X LCD D6 LCD D6 16 GND Ground 17 X LCD D7 LCD D7 18 X LCD D LCD D8 19 X LCD D9 LCD D9 20 X LCD DIO LCD D10 21 GND Ground 22 X LCD D23 LCD D23 23 X LCD D20 LCD D20 24 X LCD 17 LCD D17 23 X LCD DII LCD D11 26 GND Ground 21 X LCD 12 LCD D12 PHYTEC Messtechnik GmbH 2013 L 792e 0 69 phyBOARD Wega AM335x PB 00802 xxx 28 X LCD D13 LCD D13 29 X LCD 014 LCD 014 30 X LCD 015 LCD 15 31 GND Ground 32 X LCD PCLK LCD Pixel Clock 33 X LCD BIAS EN LCD BIAS 34 X LCD HSYNC LCD Horizontal Synchronisation 35 X LCD V
59. ight 2013 PHYTEC Messtechnik GmbH D 55129 Mainz Rights including those of translation reprint broadcast photomechanical or similar reproduction and storage or processing in computer systems in whole or in part are reserved No reproduction may occur without the express written consent from PHYTEC Messtechnik GmbH EUROPE NORTH AMERICA Address PHYTEC Messtechnik GmbH PHYTEC America LLC Robert Koch Str 39 203 Parfitt Way SW Suite G100 D 55129 Mainz Bainbridge Island WA 98110 GERMANY USA Ordering 49 6131 9221 32 1 800 278 9913 Information sales phytec de sales phytec com Technical 49 6131 9221 31 1 800 278 9913 Support support phytec de support phytec com Fax 49 6131 9221 33 1 206 780 9135 http www phytec de Web Site phyiecen http www phytec com Preliminary Edition November 2013 PHYTEC Messtechnik GmbH 2013 L 792e 0 Contents List of iii List of T HORN iii Conventions Abbreviations and Acronyms ee eren ee eee eere eaaet etas esee teen assetto sos e o iv e vii p 1 LI Hardware URNA 1 1 1 1 Features of the 35 1 1 1 3
60. images are written from the RAM to the flash In the default configuration you will find four partitions on the target The first partition contains the boot loader the second is used to store the boot loader settings the third partition stores the Linux kernel and the fourth contains the root file system You should never erase the Barebox partition If this partition is erased you won t be able to start your target anymore In such a case refer to Versions of Barebox and Linux kernel must match Therefore the following steps should only be done using the hardware that was shipped together with the DVD and thus already contains the same version of the BSP chapter 3 the software Terminal First open a new terminal window if it is not opened yet Then change to the directory opt PHYTEC BSPs phyBOARD WEGA AM335x PD Copy the new images to the fipboot directory and exit cd platform phyBOARD WEGA AM335x images sudo cp linuximage tftpboot sudo cp root ubifs tftpboot exit Open Microcom and press the RESET button on the target You will see the output any key to stop autoboot Press any key to stop autoboot PHYTEC Messtechnik GmbH 2013 L 792e 0 61 phyBOARD Wega AM335x 00802 barebox 2013 11 0 PD13 0 0 phyBOARD WEGA MLO 1 Fri Nov 15 09 04 31 CET 2013 Board Phytec phyBOARD WEGA AM335x omap hsmmc omap4 hsmmc0 registered as omap4 hsmmco mci0 regist
61. ings you can click on Install now 6 PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Started While the installation is started Ubuntu asks for your location keyboard layout and login and password details Please insert this information and wait until the installation is finished Finally you must restart your system after the installation is finished After that the system boots up and you can log into Ubuntu Please configure your network connection now How to do that was shown in our Quickstart Guide 2 20 Working with Eclipse Now we start developing our own applications with the help of Eclipse First we take a look on the C programming language before we go on with programming a QT project At the end of this chapter we explain how to execute your written programs automatically when booting the target 2 2 1 Programming in the C C perspective We are starting with the workbench Therefore you will import an existing Eclipse project into your workspace The imported example project will be compiled with the cross compiler After compiling the project you will copy and execute the newly created program on the target 2 211 Work with the demo project Click the Eclipse icon to start the application You can find this icon on your desktop Eclipse Confirm the workspace directory with OK Workspace Launcher Select a workspace Eclipse Platform stores your projects a folder called a workspac
62. ions for the Texas Instruments AM335x microcontrollers can be found in the Texas Instrumenten s AM335x Data Sheet and Technical Reference Manual Conventions The conventions used in this manual are as follows Signals that are preceded by an or character e g nRD or RD or that have a dash on top of the signal name e g RD are designated as active low signals That is their active state is when they are driven low or are driving low 0 indicates a logic zero or low level signal while a 1 represents a logic one or high level signal The hex numbers given for addresses of devices always represent the 7 MSB of the address byte The correct value of the LSB which depends on the desired command read 1 or write 0 must be added to get the complete address byte E g given address in this manual 0x41 gt complete address byte 0x83 to read from the device and 0x82 to write to the device Tables which describe jumper settings show the default position in bold blue text Text in blue italic indicates a hyperlink within or external to the document Click these links to quickly jump to the applicable URL part chapter table or figure Abbreviations and Acronyms Many acronyms and abbreviations are used throughout this manual Use the table below to navigate unfamiliar terms used in this document iv PHYTEC Messtechnik GmbH 2013 L 792e 0 Conventions Abbreviations and Acronyms
63. is not built automatically you will have to check Project Build automatically from the menu bar To build it new can compile an existing project and execute the program on the target PHYTEC Messtechnik GmbH 2013 L 792e 0 11 phyBOARD Wega AM335x PB 00802 xxx 2 2 1 2 Creating a New Project In this section you will learn how to create a new project with Eclipse and how to configure the project for use with the GNU cross development toolchain Open Eclipse if it isn t already opened Select File New Project from the menu bar A new dialog opens Select C Project and click Next Select a wizard mmm Create a new C project Wizards FIUJCCLITUITI CXISUITIU ANC DUITUIT IE Plug in Project General Y amp Project Makefile Project with Existing Code gt gt CVS 12 PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Started Enter the project name myHelloWorld and click Next C Project mmm Create C project of selected type Project name myHelloworld Use default location Location Browse Project type Toolchains Executable Linux GCC Empty Project Hello World ANSI C Project gt Shared Library gt amp Static Library Show project types and toolchains only if they are supported on the p Bak Cancel Finish Click Finish Select Configurations lt gt Sel
64. isted In case you have an AM3354 or AM3359 with a maximum of 800MHz these are 300000 600000 720000 800000 The voltages are scaled according to the setup of the frequencies You can decrease the maximum frequency e g to 720000 echo 720000 gt sys devices system cpu cpu0 cpufreq scaling max freq PHYTEC Messtechnik GmbH 2013 L 792e 0 53 phyBOARD Wega AM335x PB 00802 xxx or increase the minium frequency e g to 600000 echo 600000 gt sys devices system cpu cpu0 cpufreq scaling min freq Asking for the current frequency will be done with cat sys devices system cpu cpu0 cpufreq scaling cur freq So called governors are selecting one of this frequencies in accordance to their goals automatically Available governors are performance Always selects the highest possible CPU core frequency powersave Always selects the lowest possible CPU core frequency ondemand Switches between possible CPU core frequencies in reference to the current system load When the system load increases above a specific limit it increases the CPU core frequency immediately This is the default governor when the system starts up userspace Allows the user or userspace program running as root to set a specific frequency e g to 600000 echo 600000 gt sys devices system cpu cpu0 cpufreq scaling setspeed So when you type cat sys devices system cpu cpu0 cpufreq scaling available governors you ll get the result userspace powe
65. l PHYTEC Messtechnik GmbH 2013 L 792e 0 phyBOARD Wega AM335x PB 00802 xxx X PHYTEC Messtechnik GmbH 2013 L 792e 0 Introduction 1 Introduction 11 Hardware Overview The phyBOARD Wega for phyCORE AM335x is a low cost feature rich software development platform supporting the Texas Instruments AM335x microcontroller Moreover due to the numerous standard interfaces the phyBOARD Wega AM335x can serve as bedrock for your application At the core of the phyBOARD Wega is the PCL 05 1 phyCORE AM335x System On Module SOM in a direct solder form factor containing the processor DRAM NAND Flash power regulation supervision transceivers and other core functions required to support the AM335x processor Surrounding the SOM is the PBA CD 002 phyBOARD Wega carrier board adding power input buttons connectors signal breakout and Ethernet connectivity amongst other things The PCL 051 System On Module is a connector less BGA style variant of the PCM 051 phyCORE AM335x SOM Unlike traditional PHYTEC SOM products that support high density connectors the PCL 051 SOM is directly soldered down to the phyBOARD Wega using PHYTEC s Direct Solder Connect technology This solution offers an ultra low cost Single Board Computer for AM335x processor while maintaining most of the advantages of the SOM concept Adding the phyCORE AM335x SOM into your own design is as simple as ordering the connectored version PCM 051 and making use
66. lled on your PC as described in the next section Nontheless if you want to use your already existing environment we explain how to modify your system to get the same experience like our LiveDVD in the System Guide in section Setup your own host PC 2 1 Installing our modified Ubuntu LiveDVD As described above this step is not needed to successfully finish this chapter but for more in depth development it is better to install our LiveDVD on your computer If another operating system is installed on your computer you should first make a backup of your important files Before we can start make sure that your computer is set to boot from DVD before it boots from a hard disk drive Insert the Linux phyBOARD Wega AM335x Kit DVD into your DVD drive Start or restart your computer Your system finds a bootable DVD and starts from it After a while a language screen appears Select your desired language and click Install PHYLiveDVD The Preparing to install PHYLiveDVD window appears From Ubuntu it s adviced that you select Download updates while installing and Install this third party software now Click on Continue The Installation type window appears You now have different options how to install Ubuntu Depending on your system you have a number of possibilities that are shown in the dialog After you have choose one click on Continue The Install PHYLiveDVD window appears After you have checked the sett
67. n our DVD under PHYTEC Applications Unpack the compressed archive in the usr lib folder cd usr lib tar xzf PHYTEC Applications qt eclipse integration linux x86 1 6 1 tar gz After that start Eclipse with the option clean which cleans any cached data eclipse clean Eclipseis started and now you must include two path variables In the menu bar click on Window Preferences and enter the following QT specific information Name 074 Bin Path opt PHYTEC BSPs phyCORE AM335x PD13 1 0 platform phyCORE AM3 35x sysroot cross bin Include Path opt PHYTEC_BSPs phyCORE AM335x PD13 1 0 platform phyCORE AM335x sysroot host include Finally close Eclipse and start it again with the clean option Congratulations You have successfully integrated two new plugins in Eclipse and now you can start programming in C C and QT in an Eclipse environment In the next sub section you will find a short introduction on how to setup a TFTP server PHYTEC Messtechnik GmbH 2013 L 792e 0 67 phyBOARD Wega AM335x PB 00802 xxx 4 5 1 3 Setting up a TFTP server In the chapter Installation of software packages you have installed the required packages to set up a server Now we must change some short settings First change the file etc default tfip hpa as follows TFTP_USERNAME tftp TFTP_DIRECTORY tftpboot TFTP_ADDRESS 0 0 0 0 69 TFTP_OPTIONS secure Then create a folder called
68. nal mapping of the adapter 1 6 Pin 6 GND 2 Pin 2 X CANL 7 Pin 7 X 3 Pin 3 GND 8 4 9 5 Pin 5 Shield Figure 10 Connector Signal Mapping 3 3 5 2 Software Implementation The phyCORE AM335x provides a CAN feature which is supported by drivers using the proposed Linux standard CAN framework Socket CAN Using this framework CAN interfaces can be programmed with the BSD socket API The CAN Controller Area Network bus offers a low bandwidth prioritized message fieldbus for communication between microcontrollers Unfortunately CAN was not designed with the ISO OSI layer model in mind so most CAN APIs available throughout the industry don t support a clean separation between the different logical protocol layers like for example known from ethernet The Socket CAN framework for Linux extends the BSD socket API concept towards CAN bus The Socket CAN interface behaves like an ordinary Linux network device with some additional features special to CAN Thus for example you can use lfconrig in order to see if the interface 15 up or down but the given MAC and IP addresses are arbitrary and obsolete Configuration happens within the script etc network can pre up This script will be called when etc init d networking is running at system start up To change default used bitrates on the target change the variable BITRATE etc network can pre up For a persistent change of default bitrates change
69. nand0 barebox bb cp mnt disk barebox bin dev nand0 barebox bb 44 3 Writing the Kernel Root File System into Flash Flash Linux kernel by typing erase dev nandO kernel bb cp mnt disk linuximage dev nandO kernel bb Write root file system into flash by typing Note that normally you should not flash Linux s root file system into NAND the way described below Ubifs keeps erase counters within the NAND in order to be able to balance write cycles equally over all NAND sectors So if there s already an ubifs on your module and you want to replace it by a new one using erase and cp will also erase these erase counters and this brute way should be avoided and only be used for troubleshooting i e if the procedure described in section 4 3 3 causes errors erase dev nand0 root bb cp mnt disk root ubi dev nand0 root bb PHYTEC Messtechnik GmbH 2013 L 792e 0 65 phyBOARD Wega AM335x PB 00802 xxx 4 5 Setup your own Linux Host PC This chapter is for developers who want to use there own existing environment and not our modified Ubuntu version It is not needed if you have already installed our modified Ubuntu version like explained in the Application Guide We give an overview in this chapter of the modifications which we made to the Ubuntu version on the phyBOARD WEGA AM335x Tool DVD in comparison to the original Ubuntu In the following we distinguish between optional and essential modifications So you
70. ng Y includes N excludes M modularizes features Press Esc Esc to exit for Help for Search Legend built in excluded M module lt gt hexedit jed lt gt joe P gem lt Exit gt lt Help gt Leave the menu by selecting lt Exit gt at the bottom with the arrow right key and press Enter Repeat this until a question appears to save the new configuration Select Yes and press Enter to save the configuration Do you wish to save your new configuration lt ESC gt lt ESC gt to continue 60 PHYTEC Messtechnik GmbH 2013 L 792e 0 Advanced Information Now we can start building the configured BSP In the terminal type ptxdist go After it is finished you can finally create the root file system by calling ptxdist images You will find the kernel named inuximage and the root file system named root ubi in the directory platform phyBOARD WEGA AM335x images 4 3 3 Writing the Images into the Target s Flash In this section you will find a description on how to write the newly created images into the phyBOARD Wega AM335x s flash memory Before the images can be written into the flash the target will have to download them from a TFTP server This will be done from the command line of the boot loader The images will be copied into target s RAM Then you will have to erase the part of the flash to which you want to copy the images Finally the
71. ng lt Exit gt at the bottom with the arrow right key and press Enter Now let s take a look into the user space and add a new program in the root file system Type the following ptxdist menuconfig You should see the following output Terminal PTXdist 2012 03 0 Arrow keys navigate the menu lt Enter gt selects submenus gt Highlighted letters are hotkeys Pressing lt Y gt includes lt N gt excludes lt M gt modularizes features Press lt Esc gt lt Esc gt to exit lt gt for Help lt gt for Search Legend built in excluded M module lt gt Project Name amp Version Host Options PTXdist Options Host Tools Cross Tools Debug Tools Root Filesystem Core libc locales Core initramfs Shell amp Console Tools Scripting Languages Bytecode Engines VMs Networking Tools Disk and File Utilities Communication Utilities gt System Libraries Middleware gt lt Exit gt Help gt For example we add nano to the user space which is another editor With the help of the up and down arrow key we select Editors and press Enter After that we navigate to nano in the list of editors By pressing Y we select nano as built in PHYTEC Messtechnik GmbH 2013 L 792e 0 59 phyBOARD Wega AM335x PB 00802 xxx OS Terminal Editors Arrow keys navigate the menu Enter selects submenus gt Highlighted letters are hotkeys Pressi
72. of the pre installed BSP Terminal Click the terminal icon on your desktop Type the following command to change to the cd opt PHYTEC BSPs phyBOARD WEGA AM335x PD13 0 0 Type the following to show deselected selected kernel ptxdist kernelconfig BSP directory features You should see the following output on the terminal Terminal Linux arm 3 2 0 Kernel Configuration Arrow keys navigate the menu Enter selects submenus gt Highlighted letters are hotkeys Pressing Y includes N excludes M modularizes features for Search General setup gt Enable loadable module support Enable the block layer System Type Bus support Kernel Features Boot options CPU Power Management Floating point emulation Userspace binary formats Power management options Networking support Device Drivers gt File systems Kernel hacking Security options Cryptographic API Library routines gt gt gt gt gt gt gt gt gt gt Press Esc Esc to exit lt gt for Help lt gt Legend built in M module excluded gt gt gt gt gt Load Alternate Configuration File Save an Alternate Configuration File Select 58 lt Exit gt Help gt PHYTEC Messtechnik GmbH 2013 L 792e 0 Advanced Information Leave the menu by selecti
73. onfigurations PHYTEC supports a variety of 8 16 and 32 bit controllers in two ways 1 basis for Rapid Development Kits which serve as a reference and evaluation platform 2 insertready fully functional phyBOARD OEM modules which can be embedded directly into the user s peripheral hardware design Implementation of an OEM able SBC subassembly as the core of your embedded design allows you to focus on hardware peripherals and firmware without expending resources to re invent microcontroller circuitry Furthermore much of the value of the phyBOARD SBC lies in its layout and test PHYTEC s new phyBOARD product family consists of a series of extremely compact embedded control engines featuring various processing performance classes Production ready Board Support Packages BSPs and Design Services for our hardware will further reduce your development time and risk and allow you to focus on your product expertise Take advantage of PHYTEC products to shorten time to market reduce development costs and avoid substantial design issues and risks With this new innovative full system solution you will be able to bring your new ideas to market in the most timely and cost efficient manner For more information go to http www phytec de de leistungen entwicklungsunterstuetzung html or www phytec eu europe oem integration evaluation start up html PHYTEC Messtechnik GmbH 2013 L 792e 0 vil phyBOARD Wega AM335x
74. ons Create manage and run configurations Multiple launchers available Select one Revert Name myHelloworld Debug pe e D a Arguments F Environment iR Source Refresh E c C C Application Debuggerd gdbserver j myHelloworld Debug 22 Attach to Applica Stop on startup at main Advanced C C Postmortem Deb Debugger Options C C Remote Applicati Eclipse Application Main Shared Libraries Connection Ej Java Applet GDB debugger gdb Browse Java Application X Jv JUnit GDB command file gdbinit 2 Browse Ju JUnit Plug in Test Warning Some commands in this file may interfere with the startup operation of Launch Group the debugger for example run OSGi Framework GDBcommandset Standard i Remote Java Applicatio Protocol mi _ Verbose console mode Using Standard Create Process Launcher Select other Revert Filter matched 13 of 13 items 9 26 PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Started Select gdbserver Debugger from the Debugger drop down box Debug Configurations Create manage and ruN configurations E 4 i x iv myHelloworld Debug EMain Arguments 8 En
75. or DIP Switches on the CB Sx y Switch y of DIP Switch Sx used in reference to the DIP Switch on the carrier board VSTBY SOM standby voltage input Table 1 Abbreviations and Acronyms used in this Manual PHYTEC Messtechnik GmbH 2013 L 792e 0 V phyBOARD Wega AM335x PB 00802 xxx At this icon you might leave the path of this Application Guide This is a warning It helps you to avoid annoying problems You can find useful supplementary information about the topic At the beginning of each chapter you can find information about the time required to read the following chapter You have successfully completed an important part of this Application Guide HCG You can find information to solve problems Note The BSP delivered with the phyBOARD Wega AM335x usually includes drivers and or software for controlling all components such as interfaces memory etc Therefore programming close to hardware at register level is not necessary in most cases For this reason this manual contains no detailed description of the controller s registers Please refer to the AM335x Technical Reference Manual if such information is needed to connect customer designed applications vi PHYTEC Messtechnik GmbH 2013 L 792e 0 Preface Preface As a member of PHYTEC new phyBOARD product family the phyBOARD Wega AM335x is one of a series of PHYTEC System on Modules SBCs that offers various functions and c
76. probe g file storage file tmp file img After connecting the USB OTG port to the USB host port of any other Linux computer use the following command in order to create a file system replace sdc by the device the computer really shows sudo mkfs vfat dev sdcl The BSP doesn t provide support for using USB OTG as host 46 PHYTEC Messtechnik GmbH 2013 L 792e 0 Accessing the phyBOARD Wega Interfaces 3 3 5 Audio Interface X55 and X73 The audio interface provides a method of exploring AM335x s audio capabilities The phyBOARD Wega is populated with an audio codec at U35 The audio codec is connected to the AM335x s McASPO interface to support stereo line input and stereo line output at connector X73 In addition to that the phyBOARD Wega has one direct mono speaker output 2 x 1 W at the Molex connector X55 X73 Line In Line Out Figure 8 Audio Interfaces at Connectors X55 and X73 Pin assignment at X73 Pin Signal Pin Signal 1 LINE IN L 2 LINE IN R 3 AGND 1 AGND 5 LINE OUT L 6 LINE OUT R Pin assignment at X55 Pin Signal Description 1 SPOP Class D positive differential output 2 SPOM Class D negative differential output For additional audio applications the McASPO interface of the AM335x including the signals X MCASPO AHCLKX X 125 X DS FRM X DS ADC X DS DAC are routed to the A V connector X71 please refer to section 4 6 1 for a
77. r supply 3 VDIG1_1P8V 1 8 V power supply 4 GND Ground 5 X SPIO CSO SPI 0 chip select 0 6 X SPIO MOSI SPI 0 master output slave input 7 X SPIO MISO SPI 0 master input slave output 8 X SPIO CLK SPI 0 clock output 9 GND Ground 10 X UARTO RXD UART 0 receive data standard debug interface 11 X I2C0 SDA PC 0 Data 12 X UARTO TXD UART 0 transmit data standard debug interface 72 PHYTEC Messtechnik GmbH 2013 L 792e 0 Advanced Information 13 X 12 0 SCL PC 0 Clock 14 GND Ground 15 X JTAG TMS JTAG Chain Test Mode Select signal 16 X nJTAG TRST JTAG Chain Test Reset 17 X JTAG TDI JTAG Chain Test Data Input 18 X JTAG TDO JTAG Chain Test Data Output 19 GND Ground 20 X JTAG TCK JTAG Chain Test Clock signal 21 X USBI DP EXP USBI data plus 22 X 0581 DM EXP USB1 data minus 23 nRESET OUT Reset 24 GND Ground 25 X_MMC2_CMD MMC command 26 X MMC2 DATO MMC data 0 27 X MMC2 CLK MMC clock 28 X MMC2 DATI MMC data 1 29 GND Ground 30 X MMC2 DAT2 MMC data 2 31 X UART2 RX GPIO3 9 UART 2 receive data GPIO3 19 32 X MMC2 DAT3 MMC data 3 33 X UART2 TX GPIO3 10 UART 2 transmit data GPIO3 10 34 GND Ground 35 X UART3 GPIO2 18 UART 3 receive data GPIO2 18 36 X UART3 TX GPIO2 19 UART 3 transmit data GPIO2 19 37 X GPIOO 20 Interrupt 1 GPIOO 20 38 X GPIOO 7 GPIOO 7 39 X 335 EXT WAKEUP External wak
78. rld of the phyC IAn char buf Welcome to the World of the serial n write tty buf sizeof buf 1 return Click the Resume button to end the application You have successfully passed the debugging chapter You are now able to configure and use Eclipse for remote debugging You can step through a project watch and change the content of variables and you can use the memory monitor to view the content at a memory address Knowing how to work with Eclipse and how to develop and execute an application on the phyBOARD Wega Am335x you are now ready prepared to start your project The following section will give you detailed information on the different features and interfaces of the phyBOARD Wega and how to use them within your application If your project is more complex or if you crave more information about working with the BSP continue with chapter 4 Chapter 4ff inlcude step by step instructions on how to modify and download the BSP using PTXdist They also include system level information on the phyBOARD Wega AM335x 36 PHYTEC Messtechnik GmbH 2013 L 792e 0 Accessing the phyBOARD Wega Interfaces Accessing phyBOARD Wega Interfaces PHYTEC phyBOARD Wega is fully equipped with all mechanical and electrical components necessary for the speedy secure start up and subsequent communication to and programming of applicable PHYT
79. rsave ondemand performance In order to ask for the current governor type cat sys devices system cpu cpu0 cpufreq scaling governor and you ll normally get ondemand Switching over to another governor e g userspace will be done with echo userspace gt sys devices system cpu cpu0 cpufreqg scaling governor For more detailed information about the govenors refer to the linux kernel documentation in Documentation cpu freq governors txt 54 PHYTEC Messtechnik GmbH 2013 L 792e 0 Accessing the phyBOARD Wega Interfaces 3 3 11 Using Qt Nokia s Qtopia is very commonly used for embedded systems and it s supported by this BSP Please visit http qt nokia com in order to get all the documentation that are available about this powerful cross platform GUI toolkit Within the BSP come some demos that show what is possible with Qt version 4 8 4 They re located in usr bin qt4 demos In order to try them you need to connect an USB mouse to the board Please go into this directory with export QWS MOUSE PROTO tslib dev input eventO0 cd usr bin qt4 demos and then start demos with commands like spreadsheet spreadsheet qws Each of the Qt applications shows a standardized little green Qt icon at its upper left side that offers standard window functions like minimize maximize and close Demo fluidlauncher will be started automatically after booting 3 3 12 System Reset Button 52 The phyBOARD Wega is equipped with a system r
80. system is faster and has greater resources The platform where the actual development takes place is called host platform The platform where the final application is tested and run is called the target platform In this Quick Start we are using an x86 based Linux as the host platform As the target platform we are using the ARM Cortex A8 architecture on the phyBOARD Wega Am335x SBC Building a program for a CPU architecture different from the one used on the machine where the compilation is done is accomplished using a cross compiler tool chain and cross compiled libraries In this Application Guide we are using the GNU cross development tool chain PHYTEC Messtechnik GmbH 2013 L 792e 0 5 phyBOARD Wega AM335x PB 00802 xxx 2 Getting Started During this chapter you will learn how to build your own C C applications for the target with the help of Eclipse We establish that you have first played through our Quickstart Guide As all changes on the example projects will be lost if you proceed using the live environment we recommend to now install our modified Ubuntu LiveDVD If you only want to make your own fast experience with our phyBOARD Wega AM335x Kit you can go on with section 2 2 Working with Eclipse To ensure successful introduction to the development with the phyBOARD Wega AM335x we strongly recommend continuing with the modified Ubuntu either in a live environment or completely PS insta
81. te buffer to tty printf Welcome to the World of write to stdout return 0 Tasks Problems Executables 0 Memory grab input press Ctrl G e write tty char int void e main void int E 7n Bom You have configured your project for remote debugging You have started the GNU debugger in Eclipse and connected host s GDB with the target s GDB server You can now start to debug the project PHYTEC Messtechnik GmbH 2013 L 792e_0 29 phyBOARD Wega AM335x PB 00802 xxx 2 2 2 3 Setting a Breakpoint Now you will set a breakpoint in your program The breakpoint will be set on the last line of the function main If you resume the application the debugger will stop on this line Select the last line in main Right click into the small grey border on the left hand side and select Toggle Breakpoint to set a new breakpoint pi home ubuntu workspace myHelloWorld De Toggle Brea kpo nt Add Bookmark Add Task e Tila Diff 599 1751 351219 5 Console 33 Tasks Problems Execute 30 PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Started 2 2 2 4 Stepping through and Watching Variable Contents In this part you will step through the example project with the debugger You will also learn how to check the content of a variable Expand buf in the V
82. the Eclipse Workbench that can now support development with a number of views and wizards along with advanced editing and debugging support Due to its complexity the CDT is broken down into several components which take the form of separate plug ins Each component operates as an autonomous project with its own set of committers bug categories and mailing lists However all plug ins are required for the CDT to work properly Here is a list of the plug ins components e Primary CDT plug in is the framework for the CDT plug ins e CDT Feature Eclipse is the CDT Feature Component e CDT Core provides Core Model CDOM and Core Components e CDT Ul is the Core UI views editors and wizards e CDT Launch provides the launch mechanism for external tools such as the compiler and debugger 4 PHYTEC Messtechnik GmbH 2013 L 792e 0 Introduction e CDT Debug Core provides debugging functions e CDT Debug UI provides the user interface for the CDT debugging editors views and wizards e CDT Debug is the application connector for MI compatible debuggers 1 2 3 The GNU Cross Development Tool Chain Cross development in general refers to the overall software development process that produces a single application or a complete system running on a platform that is different from the development platform This is an important concept when the target system doesn t have a native set of compilation tools or when the host
83. these products Moreover PHYTEC products should not be operated without protection circuitry if connections to the product s pin header rows are longer than 3 m PHYTEC products fulfill the norms of the European Union s Directive for Electro Magnetic Conformity only in accordance to the descriptions and rules of usage indicated in this hardware manual particularly in respect to the pin header row connectors power connector and serial interface to a host PC Implementation of PHYTEC products into target devices as well as user modifications and extensions of PHYTEC products is subject to renewed establishment of conformity to and certification of Electro Magnetic Directives Users should ensure conformance following any modifications to the products as well as implementation of the products into target systems vili PHYTEC Messtechnik GmbH 2013 L 792e 0 Preface Product Change Management and information in this manual on parts populated on the SOM SBC When buying a PHYTEC SOM SBC you will in addition to our HW and SW offerings receive a free obsolescence maintenance service for the HW we provide Our PCM Product Change Management Team of developers is continuously processing all incoming PCN s Product Change Notifications from vendors and distributors concerning parts which are being used in our products Possible impacts to the functionality of our products due to changes of functionality or obsolesce of a certain
84. ting the appropriate card into the SD MMC connector who features a card detection a lock mechanism and a smooth extraction function by Push in out of card The AM335x processor on the phyBAORD Wega can boot from this interface PHYTEC Messtechnik GmbH 2013 L 792e 0 51 phyBOARD Wega AM335x PB 00802 xxx 3 3 8 1 Software Implementation The phyBOARD Wega supports a slot for Micro Secure Digital Cards and Micro Multi Media Cards to be used as general purpose blockdevices These devices can be used in the same way as any other blockdevice to unplug the device while it s still mounted This may result in data loss These kind of devices are hot pluggable so you must pay attention not After inserting an MMC SD card the kernel will generate new device nodes in dev The full device can be reached via its dev mmcblk0 device node MMC SD card partitions will occur in the following way dev mmcblkO0p Y Y counts as the partition number starting from 1 to the max count of partitions on this device partition table hard disk like handling If it does not contain one the whole device can be used for a filesystem floppy like handling In These partition device nodes will only occur if the card contains a valid this case dev mmcblk0 must be used for formatting and mounting The partitions can be formatted with any kind of filesystem and also handled in a standard manner e g
85. ver on the target Then you will configure the Eclipse platform and start the GNU debugger out of Eclipse using the Debug view The CDT extends the standard Eclipse Debug view with functions for debugging C C code The Debug view allows you to manage the debugging and running of a program in the workbench Using the Debug view you will be able to set breakpoints watchpoints in the code and trace variables and registers The Debug view displays the stack frame for the threads of each target you are debugging Each thread in your program appears as a node in the tree and the Debug view displays the process for each target you are running The GDB client is running on the host and is used to control the GDB server on the target which in turn controls the application running on the target GDB client and GDB server can communicate over a TCP IP network connection as well as via a serial interface In this Quickstart we will only describe debugging via TCP IP 24 PHYTEC Messtechnik GmbH 2013 L 792e 0 Getting Started 2 2 2 1 Starting the GDB server on the target In this passage you will learn how to start the GDB server on the target The GDB server will be used to start and control the myHelloWorld program To debug a program with GDB the program needs extended debugging symbols This has already been added while building the program Microcom Open Microcom Type root and press Enter Start the GDB server gdbserver 192 168
86. vironment Debugger amp Source 49 Refresh E Common 4 v C C Application 00000 5 c myHelloworld Debug Attach to Applical Stop onstartup at main Advanced Postmortem Debi a C C Remote Applicati Eclipse Application Debugger Options Main Shared Libraries Connection Ej Java Applet GDB debugger opt OSELAS Toolchain 2012 Browse G1 Java Application Jv JUnit GDB command file Browse Jv JUnit Plug in Test Warning Some commands in this file maf interfere with the startup operation of the amp Launch Group debugger for example run OsGi Framework GDB command set Standary Remote Java Applicatioi Protocol Verbose console Using Standard Filter matched 13 of 13 items 9 Process Launcher Select other Apply Revert Q Click the Browse button right beside the GDB debugger input field A new dialog opens to choose the GDB executable Click on File System Navigate to the directory opt OSELAS Toolchain arm cortexa8 linux gnueabihf gcc 4 7 3 glibc 2 16 0 binutils 2 22 kernel 3 6 sanitized bin Select the file arm cortexa8 linux gnueabihf gdb Click OK Keep the GDB command file field empty PHYTEC Messtechnik GmbH 2013 L 792e 0 21 phyBOARD Wega AM335x PB 00802 xxx Select the Connection tab and select TCP in t
87. w we will extend the myHelloWorld application The extended myHelloWorld application will write an output to the first serial interface as well as to the standard output Open Eclipse if it is not opened yet Double click Hello World c in the myHelloWorld project First include the following two additional header files include lt unistd h gt include lt fcntl h gt Then add the function write tty which writes n bytes to the first serial interface which on phyBOARD WEGA AM335x is connected to the system console dev console void write tty char buffer int count int out out open dev console O RDWR write out buffer count close out j Enter the following two lines in the main function to declare the buffer and call the write tty function char buf Welcome to the World of PHYTEC serial n write tty buf sizeof buf 1 In the next screenshot you can see the complete program PHYTEC Messtechnik GmbH 2013 L 792e 0 19 phyBOARD Wega AM335x PB 00802 xxx LiveDVD_tester VMware Player Non commercial use only Edit Source Run Window Help Project s nj tiv 83 lev Gr Qr tv 9 T Biv 1 Qv 5 7 Olle 2 Foundation Inc 51 Franklin Street Fifth Floor Boston m MA 02110 1301 USA gt i Helloworld include lt unistd h gt gt Binaries include lt fcntl h gt gt ial

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