Home

Keil μVision and Microsemi SmartFusion Application Note

Contents

1. Data Write 20000012H 00000052H QOO0004F4H A 67176287249 68546211478 Data Read 20000012H 00000052H DIIIHECH A 6 72 5153245 686481 15556 Data Write 20000012H 00000053H QOO0004F4H A G6 2 5287245 686482 522790 Data Read 20000012H 00000053H DO0004ECH 67379153257 687501 56304 Data Write 20000012H 00000054H QOO0004F4H A 67375206399 68 7502 92243 Data Read 20000012H 00000054H QO0004ECH A 6 74 5153245 68852197188 Data Write 20000012H 00000055H 0000F 4H A GM75287167 680523 33043 Data Read 20000012H 00000055H OIOIHECH A 6 6 615325 689542 38017 Data Write 20000012H 00000056H QOO0004F4H A 67575206729 689543 74273 El Figure 14 Trace Records displaying read and write operations to variable count 15 Copyright 2011 ARM Ltd All rights reserved www keil com 6 Watchpoints also known as Access Points This is an excellent opportunity to show how the Watchpoints work in Keil u Vision Watchpoints are also known as Access Breaks and are indicated by an A in Figure 16 They are set in the Breakpoints Window Watchpoints can be thought of as conditional breakpoints when compared to an Execution breakpoint Execution breakpoints stop the CPU when a specified instruction is fetched but not executed Watchpoints stop the CPU when a specified data access occurs and any specified expression becomes true There might be some Program Counter skid This is useful for locating read and write operations you do not expect Smar
2. Fl 4 Figure 9 Variable count TIP The changes you made can be saved in the File menu by selecting Save All It will also be saved if you close the source file change to a different project or shut u Vision down TIP You can edit a source file while in Debug or Edit mode You must be in Edit mode to compile it TIP The Serial Wire Viewer is unable to display local variables and DMA transfers It can see static volatile and global variables structures and peripheral read and write operations See the Appendix for details TIP To see a local variable simply make it static static int variable_name 12 Copyright 2011 ARM Ltd All rights reserved eil uVision and Microsemi SmartFusion www keil com Keil uV dM SmartF keil 2 Watch Windows Updated in Real time Blinky should still be running from the adding of the global variable count on the previous page 1 Open a Watch window if not already open select View Watch Windows Watchl In the Watch window double click or press F2 and enter count Press Enter You can do this while the program is running The CPU is not slowed down or stopped You can also Drag n Drop a variable into various windows The value of count will be displayed and updated in real time without stealing any CPU cycles Double click on the value of count and enter 0 and press Enter See Figure 10 oe Se oF 0 will be inserted into the memory where count is stored and will continue incrementing 100000000
3. 00 00 00 00 00 00 00 00 00 00 00 00 00 OO 00 00 00 00 00 00 00 00 00 00 00 00 00 O00 O00 OO 00 00 00 00 00 oo 00 oo 00 00 00 00 00 00 00 00 0O O00 00 00 00 00 0O Oxz0000097 OO 00 00 00 00 Oxz200000B2 00 00 OO OO OO Oxz00000CcD OO 00 00 00 00 00 00 00 00 00 00 00 OO OO OO 00 00 00 00 O00 Figure 11 Memory Window How It Works Read and Write to Memory Locations Vision has the ability to read and write memory locations on the fly and without stealing CPU cycles by using the Debug Access Port DAP The Cortex M3 is a Harvard architecture this means it has separate code and data address busses While the CPU is fetching instructions at full speed from the code space u Vision can access the data space via JTAG or SWD This feature is active even while the CPU is halted SWV is not used It can be disabled This feature is used to display data in the Watch and Memory windows Event Counters as well as the RTX Awareness window Not only can values of memory locations be displayed and updated in real time you can also insert values while the program is running The only instance real time will be violated is in the unlikely event the CPU accesses a memory location the exact same time as u Vision does Copyright 2011 ARM Ltd All rights reserved www keil com 13 Keil uVision and Microsemi SmartFusion 4 Logic Analyzer Window Updated in Real time The Logic Analyzer LA displays up to four variables in
4. Call Keil Sales for special university pricing For the ARM University program go to www arm com and search for university All products include Technical Support for 1 year This can be renewed Keil Real Time Library RL ARM Included win MDK Professional USB J TAG adapter for Flash programming too gt KEIL ULINK2 395 ULINK2 and ME SWV only no ETM IS KEIL Development Tools _ULINK ME sold only with a board by Keil or OEM ULINKpro 1 395 Cortex Mx SWV amp ETM trace k watt lV Note USA prices Contact sales intl keil com for pricing in other countries Prices are for reference only and are subject to change without notice For the entire Keil catalog see www keil com or contact Keil or your local distributor For more information Keil Sales In USA sales us keil com or 800 348 8051 Outside the US sales intl keil com Keil Technical Support in USA support us keil com or 800 348 8051 Outside the US support intl keil com For comments or corrections please email bob boys arm com For the latest version of this document contact the author Keil Technical support or www keil com M S l S EO COMPLIANT C E E E uE ARM Cortex Microcontroller z Software Interface Standard O i tex Intelligent Processors by ARM gt K E i TM Tools by ARM 34 Copyright 2011 ARM Ltd All rights reserved Keil Vision and Microsemi SmartFusion www keil com
5. FC Sample k BOO0033EH 3034072898 31937 60945263 PC Sample m BOOO033EH 3034089282 31937 78191579 PC Sample m 00003238H 3034105666 31937 9543 7895 PC Sample mi BOO00338H 30341722050 31938 1 2664711 PC Sample ka BOO00336H 30341 36434 31938 29930526 PC Sample m BOOO033EH 3034754878 319368 471 76842 PC Sample ps BOO0033EH 3034171202 31938 644297 58 PC Sample ri BO0O033EH 3034137556 319338 81669474 PC Sample kas BOOO033EH 3034203970 31938 98915789 PC Sample a BOOO0338H 3034220354 31939 16162105 PC Sample mi BOO00338H 3034236738 31939 33408421 PC Sample ka BOO00336H 30342531 22 31939 50654737 PC Sample m BOOO033EH 3034269506 31939 67901053 PC Sample bs BOO0033EH 30342895390 31939 951 47368 PC Sample a BOO0033EH 30343022 74 315940 02393684 PC Sample kas BOOO0S3EH 3034318658 31940 1 9640000 Figure 22 PC Samples from the ULINK2 or ULINK ME TIP PC Samples are very liable to overload the SWO pin because of the relatively low 98 KHz speed of the current A2F200 silicon The A2F500 displays PC Samples much easier All other functions including the Logic Analyzer must be turned off in order for the PC Samples to update with the A2F200 Otherwise the program must be stopped to display the PC Samples Note the X in the Ovf column indicates many PC Sample frames were lost This is still useful information The A2F500 SmartFusion can display PC Samples without any overloading conditions It is still a good idea to limit those SWV features selected to
6. a Sy stem_azhocemd h Right click on Source Files and select Add files to Group Source Files a ae Select the file Blinky c core_cm3 c and system_A2FxxxMs3 c and click on Add bea ia stdint h once and then Close These will show up in the Project Workspace when you E E system_a2hoxxma c click on the beside Source Files H pa Select Options For Target and select the Debug tab Make sure ULINK Cortex e a stdint h Debugger is selected Select this by checking the circle just to the left of the vo gl system _azfxxxm3 h F 3 i a mss_assert h word Use a assert h At this point you could build this project Configure the ULINK for SW and you can program the flash and run it on your SmartFusion board Figure 29 Project Menu 24 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 2 Running Blinky from RAM It is possible to run your program in the SmartFusion Cortex M3 RAM rather than Flash uVision makes it easy to create different target settings We will create one using RAM in the Blinky project There are six simple steps to accomplish this 1 Create a New Target Configuration in p Vision L 2 3 Open the project Blinky uvproj Open Project from the main menu and select Manage and then select Components Environment Books In the Project Targets box click on the Insert icon i Enter the name of your target I chose RAM and press
7. 7 0 M ma ioe Figure 8 Trace Configuration window Fields 6 through 8 6 Trace Events Enables various CPU counters All except EXCTRC are 8 bit counters Each counter is cumulative and an event is created when this counter overflows every 256 cycles These values are displayed in the Counter window The event created when a counter wraps around is displayed in the Trace Records window or the Instruction Trace window ULINKpro Event Counters are updated using the DAP and not SWV These events are memory mapped and can be read by your program or the u Vision Memory window a CPI Cycles per Instruction The cumulative number of extra cycles used by each instruction beyond the first one plus any instruction fetch stalls b Fold Cumulative number of folded instructions This will result from a predicted branch instruction removed and flushed from the pipeline giving a zero cycle execution time c Sleep Cumulative number of cycles the CPU is in sleep mode Uses FCLK for timing EXC Cumulative cycles CPU spent in exception overhead not including total time spent processing the exception code Includes stack operations and returns LSU Cumulative number of cycles spent in load store operations beyond the first cycle EXCTRC Exception Trace This is different than the other items in this section This enables the display of exceptions in the Instruction Trace and Exception windows It is not a counter This is a very useful featur
8. All rights reserved Keil uVision and Microsemi SmartFusion www keil com 8 Top Seven Reasons why you can t get SWV working Symptoms can range from an inability to enter a known variable in the Logic Analyzer corrupted trace frames or no information at all 1 Core Clock is wrong This is the number 1 reason The SmartFusion A2F500 has a higher SWO speed than the current 98 KHz Normally the SWO speed is derived from the Core Clock speed For the next version of SmartFusion devices you would enter 50 MHz or whatever your clock speed is in Core Clock and the SWO speed will be calculated from that With A2F200 silicon code date 0952 calculate Core Clock speed as CPU Speed 1024 100 MHz 1024 98 KHz With A2F500 devices running at a CPU speed of 100 MHz set Core Clock to 50 MHz Periodic Update is not enabled Your windows update only when the processor is stopped Trace Enable is not checked Using JTAG instead of SWD uVision will complain about this if you try it SWV needs SWD or SW selected SWD speed too high Try a slower speed This is not usually the problem oS ea ae You have selected too many SWV items and it is extremely seriously overloaded This effect often manifests itself when you stop the program and the Trace Records window is updated 7 Certain portions of u Vision in MDK are in the process of being updated This is particularly true of the Logic Analyzer and ULINKpro features With the current limited band
9. Connect the ULINK to J3 the standard JTAG adapter as shown in Figure 4 SW9 to S W Debug ON the right most position JP7 set to 2 3 RVI the other position is to program the FPGA Flash JP6 must be in position 2 3 VIP5_EXT JP5 both jumpers to C1 Single Prog See Figure 4 for a close up of these jumpers a a ee Power the board with the Microsemi provided 5 volt AC adapter If you see a Found New Hardware Wizard message click Cancel to ignore it as we will not be using the on board USB port a J3 RVI Header Figure 3 EVAL KIT Jumper Settings for Keil ULINK operation ULINK ME a aa i K ya A lt k eet n Ay woe a Figure 4 DEV KIT Jumpers Settings for ULINK operation 5 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com Software Update MDK 4 20 and later contains several enhancements The first are updated CMSIS compliant header files from Microsemi The other is a FLASH programming algorithm to move the example files from the area of 0x6000_0000 to 0x0 This is more consistent with typical Cortex M3 programming Programs must be run at less than Ox2000_0000 in order for the hardware breakpoints to work reliably You should use MDK 4 20 or later MDK Lite is available free on www keil com arm and click on the Download icon No license is required RTX RTOS is not configured for SmartFusion in MDK 4 20 It is compatible with
10. Debugging to turn off automatic Flash programming when entering Debug mode 25 Click OK Select File Save All Options for Target RAM x Device Target Output Listing User C C Asm Linker Debug Utilities Use Simulator Settings f Use JULINK Cortes Debugger Settings m Beara _ _ i Load Application at Startup Aun to maint Initialization File PO El Edit Restore Debug Session Settings W Breakpoints W Toolbox M watch amp Perfomance Analyzer Windows IY Memory Display Load Application at Startup T Run to maini Initialization File Gestore Debug Session Settings IY Watch Windows IY Memory Display CPU DLL Parameter Driver DLL Parameter SARMCM3 DLL SARMCM3 DLL Dialog DLL Parameter Dialog DLL Parameter DLM DLL EMBER TLM DLL pEMBER Figure 31 Selecting ram ini 6 Compile and RUN the program 26 Rebuild and enter Debug mode Do not use Load Load is only for programming Flash 27 Note the disassembly window will show an address in the area of 0Ox2000_0000 28 This is the Blinky program located in RAM 29 Breakpoints set will be software breakpoints and can be as many as you want You cannot set them on the fly as with hardware breakpoints You must stop the program to set unset them 26 Copyright 2011 ARM Ltd All rights reserved eil uVision and Microsemi SmartFusion www keil com Keil pV dM SmartF keil 3 SmartFusion eNVM
11. MDK 4 13a RTX will be reconfigured to work with SmartFusion after 4 20 Contact Keil Technical Support for the status of this project You can access the solution to use RTX with MDK 4 20 at www keil com support docs 3551 htm If you do not use RTX there are no problems 1 Blinky example program using Microsemi SmartFusion Now we will run the Keil MDK development system using a SmartFusion evaluation board You do not need anything programmed in the FPGA Flash to run Cortex M3 programs Connect the hardware as in Figure 1 or 2 Use a ULINK2 or ULINK ME Start u Vision by clicking on its desktop icon i Select Project Open Project from the main menu a Open the file C Keil ARM Boards Actel SmartFusion Blinky Blinky uvproj On DEV KIT change the 6 1n this line in Blinky c to a 0 1 2 or 3 const unsigned long led_mask 1 lt lt 6 ee w NY eB NY 4 Compile the source files by clicking on the Rebuild icon Load 5 Program the SmartFusion eNVM flash by clicking on the Load icon 4 Progress is indicated in bottom left corner 6 Enter Debug mode by clicking on the Debug icon Q Select OK if the Evaluation Mode notice appears 7 Click on the RUN icon to start the Blinky program Ey Blinky is now running 8 If the FPGA is programmed to connect the GPIO port to the LEDs at least one LED will blink 9 Stop the program with the STOP icon i Now you know how to compile a program load it into the SmartFusion Flash run
12. Programming for the Cortex M3 u Vision provides an integral FLASH programming feature The source files are in C Keil ARM Flash A2FxxxM3 Configuring Flash Programming 1 Click on the Target Options icon aN You must be in Edit and not in Debug mode 2 Click on the Utilities tab The rear window of Figure 33 opens up 3 Click on Settings The front window of Figure 33 opens up 4 Under description is the Flash programming algorithm Figure 33 is correct 5 If this field is blank you will receive an error when you try to program the SmartFusion eNVM 6 Ifitis blank or you need to make a change click on Add Select the appropriate algorithm and select OK 7 Click on OK twice to return to the main menu TIP To program the flash when entering Debug mode select Update Target before Debugging as shown in the rear Figure 33 If not selected you will need to program it manually with the Load icon TIP The setting Verify Code Download in the Target Options window Settings must be deselected for SmartFusion eNVM programming Verify is now performed by the programming algorithm If Verify Code Download is enabled an error will result because it will test the Actel bootloader code rather than the user flash Device Target Output Listing User C C Asm Linker Debug Utilities Configure Flash Menu Command Use Target Driver for Flash Programming JULINK Cortex Debugger Settings Update Target before Deb
13. Up to four variables can be displayed in real time using the Serial Wire Viewer in the SmartFusion RTX_Blinky uses four tasks to create the waveforms We will graph these four waveforms 1 Close the RTX Viewer windows Stop the program and exit debug mode 2 Add 4 global variables unsigned int phasea through unsigned int phased to Blinky c as shown here 3 Add 2 lines to each of the four tasks Task1 through Task4 in Blinky c as shown Z below phasea 1 and phasea 0 the first two lines are shown added at lines 0E OS TID t phasec 053 and 056 Gust after LED_On and LED_Off function calls For each of the Wy S Tm T paue four tasks add the corresponding variable assignment statements phasea TME eee phaseb phasec and phased EE 01 unsigned int phaseb 4 We do this because in this simple program there are not enough suitable O unsigned int phasec variables to connect to the Logic Analyzer 23 unsigned int phased TIP The Logic Analyzer can display static and global variables structures and arrays It pe Parr can t see locals just make them static To see peripheral registers merely read or write to 026 define LED E 0x02 them and enter them into the Logic Analyzer 5 Rebuild the project Program the Flash 6 Enter debug mode Q 049 task void phaseA void i You can run the program at this point O50 for 77 Open View Analysis Windows and select Logic Analyzer or select the LA 051 DA SVE WAIE a
14. a graphical format When a variable is placed in the LA it is also displayed in the Trace Records window L 9 10 Figure 13 Explanation A count is incrementing Note Range 100K sec Ec Logic Analyzer E Performance Analyzer u Vision must be in Debug mode The program can be running Open View Analyzer Windows Logic Analyzer or by the drop down menu if the E LA is not already displayed Code Coverage Select the LA tab and select Setup in the LA window Figure 12 will open up Click on the Insert icon in Figure 12 or press the PC keyboard INSERT key Enter our global variable count You can also drag and drop the variable into the LA window Select the Display Range max OxFF and Min 0 Click on x Close Click on RUN if not already running LA window will be updating as in Figure 13 Current Logic Analyzer Signals If necessary click on Zoom Out for an appropriate X axis Try 2 or 5 seconds or for the A2F200 much higher Add count to the Watch window if it is not already there 4 In the Watch window change the value of count to various Signal Display values to change LA values Display Type Analg ee Hexadecimal Display B count is manually set to zero in Watch window Display Formula Signal amp Mask gt gt Shift C count is manually set to OxFO in the Watch window And Mask OF FFFFFFF Shift Right 0 D count is manually set to zero in the Watch wi
15. it and stop it LEDs No LEDs will blink on the EVAL KIT or the DEV KIT when the Blinky program is running unless the FPGA is programmed with a hardware design to connect the GPIO port to the LED This is the one exception where you need some design programmed into the FPGA See under 4 Hardware on page 4 for a suitable design Something Extra to do setting a Hardware Breakpoint on the fly Run the program again Ey 1 2 Open the Blinky c tab Itis probably already open 3 Scroll down to near Line 43 num dir 4 Note on the left of the line numbers are darker grey blocks This indicates there is assembly code present and you can set a hardware breakpoint on this line You can also see these in the Disassembly window 5 While the program is still running double click to the left of the 43 and a red block will be created This is a hardware breakpoint SmartFusion has 6 but u Vision uses one or two and sometimes more 6 The cyan arrow is where the source and disassembly windows are matching You set this with your mouse 7 Note that the program will soon stop at line 43 The yellow arrow is the current program counter position This will be the next instruction executed when the CPU is started again 4 for 22 4 f Loop forever oe 4 f Calculate num O 1 L8D NUM 1 LED NUM i 1 0 0 E num dir 44 if num LED NUM i dir 1 num LED NUM 1 TIP You can set and unset breakpoints on the
16. the program SmartFusion does not support ETM a Serial Wire Viewer SWV SWV is a term used to describe some debugging features of CoreSight Specifically this refers to the real time display of PC Samples Exceptions including interrupts data reads and writes ITM CPU counters and a timestamp These features will be described presently Most of the SWV information comes out the SWO pin The Read and Write to Memory Locations described below can also be thought of as part of SWV However this data comes out of the processor via the SWD or JTAG DAP port rather than the SWO pin The Event Counters also come out the DAP b Read and Write to Memory Locations u Vision has the ability to read and write memory locations on the fly and without stealing CPU cycles by using the Debug Access Port DAP The Cortex M3 is a Harvard architecture this means it has separate code and data address busses While the CPU is fetching instructions at full speed from the code space u Vision can access the data space via JTAG or SWD This feature is active even while the CPU is halted This feature is used to display data in the Watch and Memory windows as well as the RTX awareness window Not only can values of memory locations be displayed and updated in real time you can also insert values while the program is running The only instance real time will be violated is in the unlikely event the CPU accesses a memory location the exact same time as u Vision doe
17. 008 Port 31 24 M Port 23 16 Port 15 8 I Port 7 0 Figure 6 Trace Configuration window TIP How to open this window again to modify trace selections 1 In Edit mode The Target Options icon as already described aN 2 In Debug Mode Select Debug Debug Settings from the main menu You select various SWV elements in Figure 6 It is important to note that it is easy to overload the single wire Serial Wire Output SWO pin This is more pronounced with the A2F200 than the A2F500 device The general rule is to activate only those features you need TIP You can only enable disable trace from Edit mode You can change the rest while in either mode The next page describes in detail the various fields of the Trace Configuration window Two pages after that describes some of the attributes of Serial Wire Viewer and the Debug Access Port DAP data read and write operations Testing SWV Run the program and open the Trace Records window It should like similar to Figure 21 on page 18 If it is not working correctly usually you get either nothing or spurious frames If you see ITM frames with numbers other than O or 31 or other frames that do not make sense the Core Clock speed is probably wrong This test assumes you have SYSTICK running g Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 4 Trace Configuration Fields Cortex M Target Driver Setup z x Debug Trace Flash Down
18. 0x00000369 SystemFrequency 0x04 count lt double click or F2 to add gt Figure 10 Watch Window TIP To Drag n Drop into a tab that is not active such as the Logic Analyzer Watch or Memory windows pick up the variable by blocking it click and hold and move it over the tab you want to open when the tab opens move your mouse into the window and release the variable Gawatch1 Boas TIP Periodic Windows Update in the View menu must be activated else the windows are updated only when you stop 3 Memory Windows also are updated in Real time 1 Click on the Memory tab to open it Enter count in the space provided The program can be running See Figure 11 Note that as count increments the address it points to changes This is useful for work with pointers Add an ampersand amp in front of count i e amp count Note the memory address changes to 0x2000 0010 in this case This is the physical address where the variable count is stored eo a i Note you can right click to vary the format the data is displayed You can also insert a new value A unt i 00 00 00 00 00 Oxz20000010 50 PO 00 00 O1 00 9C F4 01 00 00 00 00 00 00 O00 000025 00 00 00 00 Oxz0000046 00 00 00 00 00 Oxz0000061 00 00 00 OO OO Oxz000007C OO 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 OO OO 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 OO OO OO 00 00 00 00 00 oo oo o0 oo
19. 130 CEZ 10 0x080003F6 1756156648 24 39106456 30485 PC Sample OxO80003F6 E FEA B 0x080003CE 1756173032 24 39129211 EF Instruction Trace Figure 23 Instruction Trace window from ULINKpro 19 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 10 Debug printf Viewer ITM Stimulus Port 0 is available for a printf type of instrumentation that requires minimal user code After the write to the ITM port zero CPU cycles are required to get the data out of the processor and into the u Vision Debug printf Viewer for display L 2 Soe A Trace Records These writes to the ITM will be displayed in the Trace Records window ITM Conclusion The writes to ITM Stimulus Port 0 are intrusive and are usually one cycle It takes zero additional CPU cycles to get the data displayed in the Debug printf Viewer You write ASCII values to Port 0 Stop the program and exit debug mode if necessary Add this code to Blinky c A good place is right after the place where you declared count variable the following code is a pointer to ITM Port 0 define ITM Port8 n volatile unsigned char 0xE0000000 4 n Near line 51 enter these three lines Just after the line count that you entered is a good place ITM Port8 0 0x35 while ITM Port8 0 0 ITM Port8 0 Ox0OD while ITM Port8 0 0 ITM Port8 0 Ox0A Rebuild the source files program the Flash memory and e
20. 138209 12875004160 12875137545 12975003159 12975137073 13075002160 13075135261 13175001159 13175134659 13275000160 13275133226 13374999159 13375132790 13474998160 13475131841 13574997159 13575131030 129336 79755 129338 15445 130357 19550 130358 55315 131377 59346 131378 95454 132397 991 41 132399 35788 133418 38938 133413 74756 134438 78733 134440 14958 135459 18530 135460 54312 136479 58325 136480 94683 137499 981 22 137501 34537 138520 37917 138521 74520 Figure 17 Trace Records with data write of 0x22 to variable count 16 Copyright 2011 ARM Ltd All rights reserved www keil com 7 Breakpoints Execution Breakpoints These breakpoints can be set on the fly while the program is running just double clink in the left margin of a source window When the PC points to this instruction the CPU will be stopped before that instruction is executed These are called Execution Breakpoints indicated by the E in Figure 19 They are set on instructions in the code space Never on Data See Watchpoints for operations on data accesses Setting Breakpoints There are two ways to set a breakpoint BP E Blinky c system AZFxxxM3xc GPIO gt CONFIG 6 5 1 Double click on the left margin in a source or disassembly file even while the program is running UT ere ae ae tapes anu TEI 7 num dir Figure 18 shows the se
21. I0314F_coresight_component_trm pdf Many customers are now using this new smaller connector Hi Density connector part numbers can be found here www samtec com ftppub pdf ftsh_mt pdf The 10 pin part number that Keil uses in its boards is Samtec FTSH 105 A 20 pin is available FTSH 110 TIP TRSTN resets the JTAG module inside the processor Most better debug adapters do not need it 3 3V 3 3V 3 3V e B 3 a ee eee o SW I O Tw LS GN SW CLK E GNO O R m A CET a Figure 33 Legacy JTAG Connector showing location of the Serial Wire signals Top view A D D een 2 TMS SWDIO 3 3vVi 3 Voc oe 4 ICK SWDCLK GND SWCLK TCK aT aD swomo ae KEY NCD gt s GNDdetect nRESET Cortex Debug Figure 34 10 pin Hi Density JTAG SWD SWO connector Top view The new ULINK ME The current ULINK ME does not 3 3 volts to a target board through JTAG connector pin 1 Older versions of the ME did You can remove this feature by cutting the pin 1 lead or remove the diode on the ME This diode is on the bottom right corner of the ME beside the JTAG connector This will not affect the EVAL KIT The DEV KIT is affected more with its complicated power supplies The ULINK2 or ULINKpro are not affected as neither provides power to a target The new ULINK ME also incorporates a connector and cable as shown in Figure 35 for the new compact 10 pin JTAG SWD connector It does not supply the 3 3 volts to pin 1 It is shipp
22. Logic Analyzer TIP You can also enter these variables into the Watch and Memory windows to display and change them in real time 23 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 1 Creating a new project Using the Blinky source files All examples provided by Keil are pre configured All you have to do is compile them You can use them as a starting point for your own projects However we will start this example project from the beginning to illustrate how easy this process 1s We will use the existing source code files so you will not have to type them in Once you have the new project configured you can build load and run the Blinky example as usual You can use this process to create any new project from your own source files created with u Vision s editor or any other editor Create a new project called Mytest See ee ee 12 13 14 With u Vision running and not in debug mode select Project New u Vision Project In the window Create New Project go to the folder C Keil ARM Boards Actel SmartFusion Right click and create a new folder by selecting New Folder I named this new folder FAE Double click on the newly created folder FAE to enter this folder as is shown below Name your project I called mine Mytest You can choose your own name Click on Save Select Device for Target 1 window opens up This is the Keil Device Database which lists all the de
23. Microsemi Actel SmartFusion X KEIL Tools by ARM TM TM n Cortex M3 Lab ARM Keil MDK toolkit featuring Serial Wire Viewer Spring 2011 Version 2 6 by Robert Boys bob boys arm com Introduction This note describes the process of operating ARM Keil MDK toolkit featuring uVision and Microsemi s Actel new SmartFusion family which contains an embedded ARM Cortex M3 processor SmartFusion implements ARM Serial Wire Viewer SWV debug technology that is available on Cortex Mx processors and supported by Keil This note describes how to get all the components of this important technology working with u Vision This article needs MDK 4 20 or later Keil Vision u Vision is the IDE and is a component of the Keil MDK toolkit development system Keil supports all 8051 ARM7 Cortex M1 and Cortex M3 processors as used in various Microsemi Actel products MDK ARM components include the u Vision 4 IDE ARM Realview compiler assembler and Keil RTX RTOS The Keil ULINK JTAG SWD adapter family includes the ULINK2 ULINK ME and the ULINKpro RL ARM contains the sources for RTX plus a TCP IP stack a FLASH file system USB and CAN drivers At this time RTX TCP IP and Flash file support is available USB and CAN support is not yet completed Why Use Keil MDK MDK provides these features particularly suited for Microsemi FPGAs 1 uVision IDE with Integrated Debugger Flash programmer and the RealView ARM compiler S
24. TOS task switches Usually these techniques allow finding bugs without stopping the program These are the types of problems that can be found with a quality trace 1 2 3 4 5 6 7 8 9 Pointer problems Illegal instructions and data aborts such as misaligned writes Code overwrites writes to Flash unexpected writes to peripheral registers SFRs A corrupted stack Out of bounds data Uninitialized variables and arrays Stack overflows What causes the stack to grow bigger than it should Runaway programs your program has gone off into the weeds and you need to know what instruction caused this This is probably the most important use of trace Needs ETM to be most useful Communication protocol and timing issues System timing problems Profile analysis and code coverage Available only with ETM trace 3 What kind of data can the Serial Wire Viewer display 1 2 3 4 5 6 Global variables Static variables Structures Can see Peripheral registers just read or write to them The same is true for memory locations Can see executed instructions SWV only samples them CPU counters Folded instructions extra cycles and interrupt overhead What Kind of Data the Serial Wire Viewer can t display 1 8 9 Can t see local variables just make them global or static Can t see register to register operations PC Samples records some of the instructions but not the data value
25. WV Trace configuration is not enabled and configured properly The Core Clock needs to be accurately set Each variable will have its read and write operations displayed in the Trace Records window You must enter a variable name Raw memory addresses are allowed See the TIP below You might have to fully qualify a variable An example is Blinky AD_dbg Number 1 reason you can t enter a variable is Trace not properly set Test SWV using PC Samples You can drag and drop variables into the LA Variables must be global static or a structure You may need to modify the range to greater than 5 seconds to clearly display most variables 10 The LA is updated at a fixed rate of approximately 500 msec TIP Raw addresses can also be entered into the Logic Analyzer An example is unsigned long 0x20000000 5 Data Reads and Writes in the Trace Records for variable count When a variable is entered into the Logic Analyzer the associated data reads and or writes are displayed in the Trace Records window This is the method to enter reads and writes in the Trace Records window l a oY ee Select Debug Debug Settings and the Trace tab Unselect EXCTRC and PC Samples Click on OK twice to return to the main menu Click on RUN Open the Trace Records window with View Trace Records or the pull down menu Exceptions Counters Figure 14 opens up Data Reads and Writes to variable count at Ox2000_0010 in this case are displa
26. all DbgMon PendS SysTick ExtIRQ 0 ExtIRQ 1 ExtIRQ 2 ExtIRQ 3 ExtIRO 4 ExtIRQ 5 ExtIRQ 6 ExtIRO 7 1 139 1 139 1 967 3294 s 147168 9130 155367 8952 icoaocooooetFoococsoo Figure 20 SysTick Timer Right click on the Trace Records window and filter out Data Read and Write frames Exceptions will be left as in Figure 121 Note the X in the OVF column Some frames were lost due to overloading the SWO pin Remove TimeStamp in the Trace Configuration window Return and run the program and overflows will be gone But so will the timestamps Type Ove Num Address Data PC Dy Cyces Exception Entry ka 1430400087 Exception Return 3 0 Ea 1430400087 14595 91925510 Exception Return i 1430400087 14595 917925510 Exception Return 0 Ea 1430491376 14596 85077551 Exception Return 0 Es 1430572522 14597 67879592 Exception Entry 15 Ea 1430684095 14598 81 729592 Exception Return 0 Es 1430684095 14598 81 729592 Exception Entry 15 Ea 1430795669 14599 95680612 Exception Return 3 0 Ea 1430795669 14599 9558061 2 Exception Return 0 m 1430876814 14600 78381633 Exception Entry 15 14350988394 14601 92238776 Exception Return 0 st 1430988394 14601 92238776 Exception Entry 15 1431099972 14603 06093878 Exception Return 0 i 1431099972 14603 06093878 Exception Return 0 m 1431181118 14603 89895918 Exception Entry 15 m 1431292692 14605 02746939 Exception Return 0 n 1431292692 14605 02746939 Exce
27. ding or an incorrect Core Clock setting Here are some hints on reducing traffic to minimize SWO overruns 1 Reduce the number of variables in the Logic Analyzer 2 Reduce the number of items selected in the Trace Configuration window These include a PC Sampling Turn this off or increase the Prescaler to reduce the sampling rate b On Data R W Sample c EXCTRC Exception Tracing d Any Trace Events the Counters e ITM Stimulus Ports 31 and 0 Viewer and RTX Awareness respectively Set the Timestamp Prescaler to 1 Turn the timestamps off Sometimes this will turn the trace off though But it is worth a try Lower the rate of reads writes and exception calls in your software Turn off the SYSTICK timer in your software if you are not using it Reduce the Range setting in the Logic Analyzer Sometimes a very large number overloads u Vision The General Rule is activate only those SWV features you need eS ee ee Using a faster computer can help in some cases SWV can create a great deal of information that must be processed quickly This is especially true where the Logic Analyzer window is concerned 10 We will be making continuous improvements to u Vision to provide you with a better SWV experience TIP If you are seriously overloading the SWO there will usually be at least some data coming out u Vision recovers easily and painlessly from data overruns You are made aware when frames are lost 30 Copyright 2011 ARM Ltd
28. e Debug Viewer It is found in the header core_CM3 h in the directory C Keil ARM RV3 I INC 20 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 11 Opening and Using RTX Kernel Awareness The RTX Viewer Keil has its own full feature RTOS called RTX It is provided as part of Keil MDK full tool suite for no charge and can have up to 255 tasks No royalty payments are required If the RTX source code is required this is included in the Keil RL ARM Real Time Library which also includes USB CAN TCP IP networking and a Flash File system Vision will work with any RTOS Users often want to know the number of the current operating task and Debug Peripherals Tools SVCS Window the status of the other tasks This information is usually stored in a RS mg memory area by the RTOS Keil provides Task Awareness windows for R Reset cpu RTX Rur uVision s RTX Viewer is a kernel awareness feature with live update se This uses both the Serial Wire Viewer ITM Stimulus Port and the DAP ry Debug Access Port OHS RTX Viewer windows are available while in Debug mode by selecting eae Debug OS Support See Figure 23 ETEA An example using RTX is available for SmartFusion Execution Profiling E Event viewer RTX is easy to configure with SmartFusion This integration is made easy by the Cortex M3 architecture Figure 26 Opening the RTX Viewer Configuring V
29. e and is often used in debugging 7 ITM Stimulus Ports Enables the thirty two 32 bit registers used to output data in a printf type statement to uVision Port 0 is used for the Debug printf Viewer Port 31 is used for the Keil RTX real time kernel awareness window Only Ports O and 31 are currently implemented in u Vision and should normally be checked Ports 1 through 30 are not currently implemented and are Don t Care a Port 31 Enables the ITM port used for the RTX Viewer b Port 0 Enables the ITM port used for the Debug printf Viewer A small amount of instrumentation code is needed in your project See 10 Debug printf Viewer in Part 4 for information on using this feature 10 Copyright 2011 ARM Ltd All rights reserved Keil Vision and Microsemi SmartFusion www keil com 5 Program STOP Control Breakpoints SmartFusion has six hardware breakpoints The uy Vision debugger will use one perhaps two for its operation u Vision will alert you if you attempt to use more breakpoints than are available Breakpoints can be set on the fly while the program is running as long as the program is located at addresses 0x2000 0000 or lower For addresses greater than this you must stop the program to set a hardware breakpoint Watchpoints Sometimes referred to as Access Breaks in Keil documents These can be thought of conditional breakpoints Two are available in SmartFusion processors They can t be set on the fly You must stop the pro
30. ed as in Figure 6 1 If necessary stop the CPU and exit debug mode Er 2 Click on the Target Options icon aN or select Project Options for Target 3 Click on the Debug tab 4 Click Settings beside the USE ULINK Cortex Debugger box Confirm SWJ and SW are selected 5 Click on the Trace tab to open Figure 6 6 For A2F200 parts set Core Clock to 0 098 MHz For the A2F500 set Core Clock to 50 MHz 7 Select Trace Enable and EXCTRC 8 Set the Timestamps Prescaler to 1 to lessen data overruns 9 Unselect Periodic and on Data R W Sample Window will look like Figure 6 10 Click on OK twice to return to the main screen 11 The Serial Wire Viewer is now activated 12 Click on File Save All to save these settings Cortex M Target Driver Setup E X Debug Trace Fash Download Core Clock 0 038000 MHz M Trace Enable Trace Port Trace Events T CPI Cycles per Instruction EXC Exception overhead SLEEP Sleep Cycles LSU Load Store Unit Cycles FOLD Folded Instructions Iv EXCTRC Serial Wire Output UART NRZ gt SWO Clock Prescaler 1 V Autodetect SWO Clock 0 096000 MHz Prescaler 102416 Periodic Period lt Disabled gt T on Data R W Sample Exceotion Tracing ITM Stimulus Ports 31 Fort 24 23 Port 16 15 Port a7 Port 0 Enable xFFFFFFFF Joe Pot Poet i Poe Poet i Pot ae fi Poet ie fi Por fie it fie i Pie fie i fie Ji i fi ie i ie ie e Privilege o lt 00000
31. er for ULINK to work with the examples in this lab The other jumpers on both boards must be in their default positions m az Ea roe ay l 5 AECA 08 ne oT pa we Ff 2 si Figure 1 DEV KIT with Keil URN iiare 2 EVAL KIT T with Keil ULINK2 4 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 5 Software You must use Keil MDK 4 20 or later to get all the required SmartFusion files The evaluation version MDK Lite is available free from www keil com A license is not needed You can compile code up to 32K The Keil examples are all less than this Please install MDK into the default directory of C Keil to easier follow the directories in this note Normally you install MDK anywhere You can also install multiple copies and they will not interfere with each other Keil provides two examples Blinky and one using the RTOS RTX_Blinky These are found in C Keil ARM Boards Actel SmartFusion A TCP IP example is available on www keil com See page 28 for details 6 Connecting the Hardware A2F EVAL KIT the Small Blue Board See Figure 3 1 Connect the debugging adapter to J3 RVI Header the standard JTAG adapter as shown 2 JP7 and JP10 jumpers set to position 2 3 They are labeled RVI and M3 respectively 3 JP6 2 3 J6 installed J5 and J8 are not installed 4 Connect a USB cable to power the board to J14 Some LEDs will illuminate A2F DEV KIT the Big Green Board See Figure 4 1
32. erial Wire Viewer is configured properly TIP To view the exception SysTick enable EXCTRC in the Trace Configuration window Select View Trace and select the Exception window SysTick will also be displayed in the Instruction Trace window RTX Tasks and System Property Value E System Timer Number 0 Tick Timer 10 000 mSec Round Robin Timeout 50 000 mSec Stack Size 200 Stack with User provided Stack 0 Stack Overflow Check Yes Task Usage Available 7 Used 2 User Timers Available 0 Used 0 E Tasks Priority State Delay Event Value Event Mask Stack Load 255 os ide_demen C 3 ledoff 2 blink Eve ower Figure 27 RTX Viewer RTX Tasks and System window RTX Tasks and System Event iewer RARA U Min Time 260 6924 Mas Time 239033 2 Range 5000 000 Grd 250 0000 z init blink ledoff Idle RTs Tasks and System Figure 28 RTX Viewer Event Viewer window TIP The RTX Viewer gets its data from the DAP read write port This is not SWV The Event Viewer gets its data from SWV therefore SWV must be configured Remember A2F200 Core Clock 0 098 MHz and A2F500 50 MHz 22 Copyright 2011 ARM Ltd All rights reserved eil uVision and Microsemi SmartFusion www keil com Keil pV dM SmartF keil 12 Logic Analyzer Window View variables real time in a graphical format u Vision has a graphical Logic Analyzer window
33. fly No need to stop the CPU This is an important feature 8 Double click on the red box to remove the breakpoint 6 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 1 Debug Ports JTAG SWD SWJ and SWO JTAG The JTAG port is used to access the internal CoreSight debug module from the outside world and uses from 4 to 5 pins A USB to JTAG adapter such as the ULINK2 connects the debugger software to the target chip Serial Wire Debug SWD SWD is a two wire alternative to the JTAG port SWD has a bi directional signal plus a clock It shares the JTAG signals TMS and TCK respectively on the JTAG connector SWD can do everything JTAG can except for boundary scan You must use SWD to use the Serial Wire Viewer It is called SW in pu Vision SWJ This switches between JTAG and SWD mode SWJ must be enabled to select either JTAG and SWD SWO Serial Wire Output This is a single pin high speed output that provides the Serial Wire Viewer trace data It is easily overloaded with excessive amounts of data SWO shares a pin with the JTAG signal TDO JTAG and SWD The example above uses the SmartFusion JTAG port to communicate with the ARM CoreSight debugging module To use Serial Wire Viewer we will need to use the Serial Wire Debug SWD port SWD can do everything JTAG can except Boundary Scan See the next page to activate it TIP SmartFusion eval boards have a 510 ohm resistor from the nTRST pi
34. for the status of this issue Open RTX_Blinky and configure the RTX Viewer 1 Open the RTX_Blinky project from C Keil ARM Boards Actel SmartFusion RTX_Blinky Blinky uvpro j 2 Ensure the SWV is configured in the Trace Configuration window Use SW and not JTAG Enable ITM Port 31 g s Q 3 Compile L and load the project into the Flash Enter Debug mode 4 Click on the RUN icon to run RTX_Blinky 5 Four LEDs will blink sequentially TIP If RTX_Blinky does not run and when you stop it the PC is on the Hard Fault vector see the NOTE above 21 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com Open the RTX Viewer Windows 1 Open Debug OS Support and select RTX Tasks and System and the window in Figure 27 opens up RTOS visibility is updated in real time using the same CoreSight DAP technology as used to update and modify the Watch and Memory windows 2 Open Debug OS Support and select Event Viewer and the window in Figure 28 opens up 3 Note the tabs at the bottom left to switch between the two windows 1 The Event Viewer is updated with the ITM Stimulus Port 31 is part of the Serial Wire Viewer 2 Ifthe RTX Tasks and System window is updated only when you stop the program check View Update Periodic Window This setting will not affect the Event Viewer 3 If the Event Viewer shows no data click on the ALL icon and adjust the range with and Make sure the S
35. gram execution TIP See Watchpoints and Breakpoints in Part 4 TIP Breakpoints and Watchpoints are different they originate in different parts of CoreSight For instance killing all breakpoints inside u Vision does not kill the Watchpoints Breakpoints can be set by clicking in the left column where assembly instructions arte indicated as shown below Or they can be entered in the Breakpoints window Watchpoints also known as Access Points must be entered in the Breakpoints window This window is opened only in Debug mode by selected Debug Breakpoints or pressing Ctrl B Shown below are three breakpoints and one watchpoint The three breakpoints are shown as red blocks in the source window on the side You can temporarily unselect entries in this window 17 volatile unis xX 19 void SysTic Curent Breakpoints 20 SysTicktno 00 E O lt 0000042C B gt 01 E Ox00000410 gt 7 02 E 0x00000418 n ee E EE w 03 A readwrite Ox20000013 len 4 Sys lickCnt x24 23 void Delay 24 unsigned 25 26 systickcn Wo7 while 5 j 20 29 Bores Ticket Oc M Read 7 White at int main w a z 532 int num Count fi Size Bo int dir a4 Command 5 O ai al I Objects 35 WATCHDOG a SysTick C Define Kill Selected Kill A Help 6 Debug Information Display When we speak of trace we can refer to Serial Wire Viewer SWV or ETM Both produce historical records concerning the execution of
36. gt gt Actel POWER MATTERS Hew Project Project Name KeilSmartFusion_STP Project Location CADesktop KeilSmartFusion_5STP Browse Programming mode f Single device k t Chain l ca ony Trey Me meter it 7 Browse the PC file system to find the SmartFusion Eval Kit mss_101 stp file This file is attached to this PDE or is available on Wwww actel com or www keil com 32 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com Load Programming File Kei_STP All Programming Files pdb stp s enpe Created new and Settings wickershent Desktop Kei LSmactPusion STP Kei lfmartfusion STP pes STAPL file D Keil Keil STP mes I0i stp has been loaded successfully Tai CHECKSUM DS33 ALC VERSION 20 9 Allow FlashPro to program the Eval board until the Run Passed text can be seen on the FlashPro Interface 33 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 8 Keil Products Keil Microcontroller Development Kit MDK ARM MDK Professional Includes RL ARM Promotion with ULINKpro until September 30 2011 9 995 MDK Standard with included RTX RTOS 4 895 MDK Basic 256K Compiler Limit No debug Limit No included RTX 2 695 MDK Lite Evaluation version 0 Call Keil Sales for more details on current pricing All products are available
37. ial Wire Output UART NRZ ULINK2 and ULINLK ME must use this UART NRZ encoding is not supported by ULINKpro An error will result when you enter debug mode with ULINKpro b Serial Wire Output Manchester Use Manchester encoding ULINKpro only 4 Timestamps Enables timestamps and selects a Prescaler 1 is the default Selecting a higher value can but not always lessen SWO overloads Completely disabling the timestamps can lessen data overruns but can disable other SWV features Itis worth a try if you are having overload problems 5 PC Sampling Samples the program counter and displays in the Trace Records window a Prescaler 1024 16 the default means every 16 384 PC is displayed The rest are lost b Periodic Enables PC Sampling c Period Automatically derived from Prescaler and Core Clock settings d On Data R W Sample Displays the address of the instruction that made a data read or write of a variable entered in the Logic Analyzer in the Trace Records window This is not connected with PC Sampling TIP It is important to ensure the Serial Wire Output SWO pin is not overloaded u Vision will alert you when an overflow occurs with a X in the Trace Records window or with a D or a O in the ULINKpro Instruction Trace window u Vision easily recovers from these overflows and immediately continues displaying the next available trace frame Dropped frames are somewhat the normal situation especially with many data
38. ing now Figure 35 ULINK ME with the new 10 pin connector and cable 29 Copyright 2011 ARM Ltd All rights reserved Keil Vision and Microsemi SmartFusion www keil com 6 Acronym List BP Break Point DAP Debug Access Port eNVM_ SmartFusion Flash embedded nonvolatile memory ETM Embedded Trace Macrocell GPIO General Purpose Input Output ITM Instrumentation Trace Macrocell SWD Serial Wire Debug SWV Serial Wire Viewer SWO Serial Wire Output TPIU Trace Port Interface Unit WP Watch Points They are also called Access Breaks Macrocell A macrocell is a pre built black box of gates used by the chip designer to add a function or peripheral to a processor Examples are ETM ITM and memory Macrocells can also be thought of as building blocks This is a term used by chip designers and not end users Hardware Design This is Microsemi s terminology for the FPGA program It is similar to a microcontroller project 7 Overloading the SWO pin The Serial Wire Output pin SWO is just that a single bit high speed line that is expected to handle all the data sent to it A Cortex M3 can read and write data much faster than the SWO can process Overloads have an X in the Ovf or Dly overflow or Delay column in the Trace Records window but not always Sometimes the frames have corrupt missing or have wrong information and this is easy to spot ITM frames with IDs other than 0 or 31 are a sure sign of either overloa
39. ision to activate RTX Kernel Awareness The RTX Viewer has two components the RTX Tasks and System window which uses the DAP for access and the Event Viewer which uses SWV Serial Wire Viewer through the ITM Stimulus Port 31 Table 1 outlines the mandatory configuration items Table 1 uVision configuration items needed for RTX Viewer Window setting Enable RTX Periodic Update SWD SWV RTX Tasks amp System Yes Yes Notes for Table 1 1 Enable RTX Click on the Options for Target icon as and select the Target tab In the Operating System dialog box select RTX Kernel Viewer Periodic Update while in Debug mode select View Update Periodic Window On by default 3 SWD Serial Wire Debug Options for Target select Debug tab SWD is needed for SWV SWV Serial Wire Viewer Options for Target select Debug tab and then Settings The following items are mandatory everything else is optional a Trace Enable must be checked and a valid entry for Core Clock 0 098 MHz for SmartFusion A2F200 silicon date code 0952 and 50 MHz for A2F500 devices when the CPU is running at 100 MHz b ITM Stimulus 31 NOTE RTX RTOS is not configured for SmartFusion in MDK 4 20 It is compatible with MDK 4 13a RTX will be reconfigured to work with SmartFusion after 4 20 You can access the solution to use RTX with MDK 4 20 at www keil com support docs 355 1 htm If you do not use RTX there are no problems Contact Keil Technical Support
40. l com download docs 404 asp Instructions are included as well as a pre compiled sample executable Http_demo axf Do not attempt to rebuild the project unless you have RL ARM installed Http_demo axf will be deleted and no new version will be created You must then reload Http_demo axf from the example files again You can load this axf file into the evaluation version of u Vision and run and debug the http program A http demon will be installed on the SmartFusion and you can connect to it with your favourite browser as shown Embedded Development Tools YY KEIL An ARM Company Keil Embedded WEB Server Example for Actel POWER MATTERS Network System LED Button Language Statistics This Web pages are served by the Web server which is part of TCPnet in the Real Time Library Click on the links above to see some status information about the web server and the TCP IP stack This example is developed using the RealView Microcontroller Development Kit and the Real Time Library For additional information about Keil products please visit www keil com Copyright 2004 2010 KEIL An ARM Company All rights reserved 28 Copyright 2011 ARM Ltd All rights reserved eil uVision and Microsemi SmartFusion www keil com Keil uV d M SmartF keil 5 ARM JTAG SWD SWO Adapter Connector Schematics For the complete description of CoreSight and the new Hi Density debug connector search www arm com for this document DD
41. load 1 Core Clock 0038000 MHz 2 W Trace Enable Timestamp M Trace Events I Enable Prescaler 16 CPt Cycles per Instruction RE EXC Exception overhead SWO Clock Prescaler 5 Pc Sampling SLEEP Sleep Cycles 7 Autodetect a 102416 odete a EN ae 102416 I TF LSU Load Store Unit Cycles SWO Clock 0 038000 MHz fy F Periodic Period lt Disabled gt I FOLD Folded Instructions Enor lt S W Port not selected gt cl on Data R W Sample IY EXCTAC Exception Tracing ITM Stimulus Ports See 31 Port 2423 Pot 1615 Pod 8 7 Port 0 Enable OxFFFFFFFF rd fe ad od pe Cad td e dd dd ad a ed fa dd Od dd a Velie r viv Privilege 0x00000008 Port 31 24 fv Port 23 16 Port 15 8 Port 7 0 D rea e Figure 7 Trace Configuration window Fields 1 through 5 1 Core Clock The CPU clock speed for SWV SWO Clock signal is derived from and is a ratio of the Core Clock Current ratio for SmartFusion A2F200 is CPU 1024 100 MHz 1024 98 KHz For the A2F500 the ratio is 100 2 50 MHz If you change the speed the CPU is running at these values will obviously change 2 Trace Enable Enables SWV and ITM which is essentially everything on this window except Trace Port This does not affect the DAP Watch and Memory window display updates 3 Trace Port Selects the SWO trace output UART or Manchester protocol a Ser
42. move the diode on the ME that is connected to pin 1 SmartFusion boards have complex power supplies that can be confused when 3 3 volts is applied before 5 volts ULINK2 is not affected Blinky Alert You do not need a FPGA design programmed into SmartFusion parts to program and run the Cortex M3 processor with uVision You do need the FPGA programmed in order to have the LEDS blink as used by the Keil examples The file Keil_SmartFusion_tutorial_PF zip available from the Actel website contains the design file mss_101 stp This file is also attached to this pdf file Click on the paper clip icon in the bottom left hand corner If the LEDs do not light and the Blinky program is running correctly program mss_101 stp into the SmartFusion FPGA Instructions to program mss_101 stp into the FPGA Flash eNVM using the Microsemi program FlashPro are in Section 9 on page 32 on this document FlashPro is available stand alone or as part of the Libero IDE FPGA development software Both are free from the Actel com website mss_101 stp and instructions are also available from www keil com in the location where this document is stored TIP You must change two jumpers to program the FPGA Flash Remember to switch these jumpers back in order to connect successfully with a ULINK These jumpers are JP7 and JP10 in the EVAL board This is a common error On the DEV KIT switch SW9 must be set to S W Debug ON JP amp set to RVI and JP6 to VIP5_EXT in ord
43. n 3 on the JTAG connector to ground that might cause a Debug adapter to not function with JTAG selected This mostly affects the ULINKpro Either remove this resistor or put a 330 ohm between nTRST pin 3 and VTref pin 1 Alternatively just use SWD This is the easiest fix 2 Selecting SWD or JTAG You must use Single Wire Debug SWD mode to use Serial Wire Viewer This is configured in Vision as shown in Figure 5 You must first have a ULINK connected to a Cortex M3 target 1 If necessary stop the CPU x and exit debug mode Q 2 Click on the Target Options icon aN or select Project Options for Target or pressing Alt F7 3 Click on the Debug tab 4 Click Settings beside the USE ULINK Cortex Debugger box to open Figure 5 The box labeled SW Device or labeled JTAG Device Chain if JTAG is selected in Figure 5 will display the CoreSight devices detected in the processor or an error if none are found 5 Select SWJ and SW in the Port box Confirm SW DP is shown as in Figure 5 You must see SW DP before you continue to Step 6 Figure 5 shows that the ULINK is now successfully been connected to the CoreSight SWD port Urgent TIP If you don t see either SW DP or JTAG DP in this window and get an error message or device not found stop right now and fix this This section must work before you can continue any debugging Make sure the jumpers are set correctly and the board is properly powered See TRAP below Try re poweri
44. na 0x000 1 TET 052 LED On LED A window on the toolbar m 053 SS lt S 054 Signal func t_phaseEj Enter the Variables into the Logic Analyzer 055 LED Off LED A O56 phasea 0 4 9 Click on the Blinky c tab Block phasea click hold and drag up to the 057 Oo Logic Analyzer tab don t let go yet use 10 When it opens bring the mouse down anywhere into the Logic Analyzer window and release 11 Repeat for phaseb phasec and phased These variables will be listed on the left side of the LA window as shown Now we have to adjust the scaling 12 Click on the Setup icon and click on each of the four variables and set Max in the Display Range to 0x3 13 Click on Close to go back to the LA window 14 Using the OUT and In buttons set the range to 1000 seconds or 2 sec for the A2F500 15 You will see the following waveforms appear Click to mark a place See below Select Signal Info and Cursor Hover over one of the waveforms and get timing and other information as shown in the inserted box labeled phaseb Logic Analyzer Setup Load Min Time Max Time Grid Zoom eee ee ie Code I Screen el Cpe E Show Cycles s Cursor m 3 a a E s D Ti ra a S a Mouse Pos Reference Point Delta 107439 8 5 96686 24 5 10753 51 s 0 000093 Hz 1 0 1 g N A NYA ira 1 1 a iL m I I I I I 14459 7985 96686 24 5 102453 8 s 111453 8 5 4 F Eh Disassembly a
45. ndow Export J Import Export Signal Definitions Import Signal Definitions Figure 12 Logic Analyzer Setup window we Logic Analyzer Min Time Max Time Range Grid i nhas 080s 293643 9s 100000 0s 5000 000 s gallen US f 130000 0 s 240000 0 s 290000 0 s E Figure 13 Logic Analyzer windows displaying global variable count Crucial TIP If the Logic Analyzer data does not increment but the variable does in the Watch or Memory windows this can mean the SmartFusion SWO is overloaded Sometimes the LA will update only by clicking on the scroll bar or stopping the program Disable some of the SWV functions such as Exceptions EXCTRC Disabling Timestamps often stops the LA Try reducing the Range to 10 seconds or so as a high range can stop the LA update process TIP You can enter up to four variables in the LA window Try entering three more instances of the variable count TIP The A2F500 works better with SWV than does the A2F200 and its slower SWO pin 14 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com Logic Analyzer Notes L 2 Se oS The Logic Analyzer displays up to four variables in a graphical format SWV is used to obtain the data displayed SWV must be configured and it comes out the Serial Wire Output pin You will not be able to enter variables if the S
46. ng the board TRAP Top reason people can t get SW and or JTAG working is a wrong setting of the jumpers JP7 and JP9 on EVAL board and JP5 JP6 JP7 and SW9 on the larger DEV board This is because these must be switched to enable FPGA programming By default they are set to FPGA programming and not for standard SWD or JTAG operation 6 Click on OK twice to return x Debug Trace Flash Download ULINK USB JTAG SW Adapter m r SW Device 1 Serial No Mi 0475AE IDCODE Device Name Move SWDIO 0 1BA401477 ARM CoreSight Sw DP ULINK Version ULINK2 On ao Device Family Cortex M Firmware Version v1 40 eT ne Tem k M SWJ Port ew Manual Configuration Device Name Max Clock 1MHz Add Delete Ip Jate A len Download Options Verify Code Download Download to Flash r Cache Options V Cache Code V Cache Memory Debug Connect amp Reset Options Connect Normal v Reset Autodetect z JV Reset after Connect Figure 5 Selecting SWD Mode TIP To refresh this window switch between JTAG and SW in the Port drop down menu TIP The box Verify Code Download must be unchecked for SmartFusion Verify Code is done inside the programmer 7 Copyright 2011 ARM Ltd All rights reserved Keil Vision and Microsemi SmartFusion www keil com 3 Configuring the Trace In order to see the Serial Wire Viewer features the Trace must be configur
47. nter Debug mode Open Debug Debug Settings and select the Trace tab Confirm ITM Port 0 is selected unselect Periodic EXCTRC on Data R W Sample and TimeStamps Enable as shown in Figure 24 Corten M Target Driver Setup Debug Trace Core Clock 0 098000 MHz Z Trace Enable Trace Port Timestamps m Trace Events Serial Wire Output UART NAZ Y Enable Prescaler e4 J CPI Cycles per Instruction SWO Clock Prescaler a N EXC Exception overhead ie SLEEP Sleep Cycles utodetec x Prescaler 102416 F Lsu Load Store Unit Cycles SWO Clock 0 030000 Mhz Periodic Period lt Disabled gt FOLD Folded Instructions l on Data RAV Sample EXCTRC Exception Tracing ITM Stimulus Ports 31 Port 24 23 Port 16 15 Port 8 7 Part 0 Enable OxFFFFFFFF uadui Privilege 000000008 Port 31 24 V Port 23 16 Port 15 8 Port 7 0 T Figure 24 Trace Configuration for printf Click on View Serial Windows and select Debug printf Viewer Make sure Periodic Update is enabled or the window will only update when you stop the program Click on RUN In the Debug printf Viewer you will see the value 5 appear every few seconds as shown in Figure 25 You could add more ASCII characters to format your own messages Debug printf 9 X Figure 25 ITM writes of 5 with LF and CR TIP ITM_SendChar is a Keil supplied function you can use to send characters to th
48. odify Watchpoints TIP If an expression points to code space an execution or hardware breakpoint is created TIP If an expression points to a data address a Watchpoint or Access Break is created TIP If you attempt to enter more Breakpoints or Watchpoints than the device has u Vision will warn you usually when you attempt to execute your program 17 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 8 Exception Tracing Serial Wire Viewer displays exceptions and interrupts in real time without stealing any CPU cycles or needing instrumentation code Note that ARM interrupts are a subset of exceptions The Keil examples often have the SysTick timer running We will use this exception as an example L AA a ae Assume Blinky c is loaded and u Vision is in debug mode and the CPU is stopped Open the Trace Configuration window by clicking on Debug Debug Settings Enable EXCTRC Unselect Periodic and On R W Sampling Click on OK twice to return Click on RUN to start the program Instruction Trace Exceptions Counters Open the Exception Trace window and ensure the Trace Record window is still open The Exception Trace window will display the SysTick timer in Figure 18 Double click to reset Scroll up and down and you can see the listing of all potential exceptions available in the NVIC Exception trace x NMI HardF ault MemManage BusFault UsageF ault S C
49. ompany Keil An ARM Company Plano Texas Grasbrunn Germany 800 348 8051 Toll Free 49 89 456040 20 sales us keil com sales intl keil com support us keil com support intl keil com 1 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com INDEX Page Part 1 Introduction and Getting Ready 3 1 Serial Wire Summary 3 2 What the trace is useful for 3 3 What kind of data can the Serial Wire Viewer display 3 4 Hardware The SmartFusion boards and debug adapters 4 5 Software Keil MDK 4 20 5 6 Connecting the Hardware 5 Part 2 Tracing Examples and Useful Information 6 1 The Keil Blinky example 6 Part 3 Configuring the Serial Wire Trace 6 1 Debug Ports JTAG SWD SWJ and SWO A short tutorial 6 2 Selecting SWD or JTAG ports 7 3 Configuring the Trace 8 4 Trace Configuration Fields 9 5 Program STOP Control 1 6 Debug Information Display 1 Part 4 The Rest of the Tracing Examples 12 1 Creating a Global Variable to use in our examples 12 2 Watch window 13 3 Memory Windows 13 4 Logic Analyzer 14 5 Data Reads and Writes in the Trace Records window 15 6 Watchpoint Example Access Breaks 16 7 Breakpoints Execution Breaks 17 8 Exceptions Tracing 18 9 PC Samples Tracing 19 10 Debug printf Viewer 20 11 Opening and using RTX Kernel Awareness The RTX Viewer 21 12 Logic Analyzer Window View variables real time in a graphical format 23 Par
50. only those you actually need to minimize overloading and subsequently lost frames ULINKpro Instruction Trace Window The ULINKpro provides the Instruction Trace window shown in Figure 23 Figure 21 shows two Exceptions a Data Write and seven PC Samples Note disassembled instructions are shown and if available source code will also be displayed If you double click on a PC Sample you will be taken to that instruction in the disassembly and or source window The ULINKpro can process SWV data very fast and therefore is much less susceptible to data overruns Instruction Trace Filter fan al e tye Fag Num Pe Opcode irent Souc Code Adtiess Data __Cyces Tmeld __ 30474 Exception Return 0 1756069016 24 389847 44 30475 Exception Entry 34 1756069159 24 38984943 30476 Exception Exit 34 1756069219 24 38985026 30477 Exception Return 0 1756069228 24 38985039 30478 Data Write D 020000000 040481 1756069292 24 38985128 30479 PC Sample Ox080003CE 481C LDR D pc 112 0x080004 1756074728 24 38992678 30480 PC Sample 0x080003D0 8800 LDRH 0 r0 000 1756091112 24 39015433 30481 PC Sample 0x080003D4 D004 BEQ Ox080003E0 1756107496 24 39038189 30482 PC Sample OxO80003E2 4819 LDR O pe 100 0x080004 1756123880 24 39060944 30483 PC Sample OxO80003E4 7800 LDRB 0 r0 000 1756140264 24 39083700 30484 PC Sample OxO80003E6 B
51. ption Return 0 s 1431373834 14605 55544895 Exception Entry 15 es 1431485409 14606 99396939 Exception Return 0 1431485409 14606 99396939 Figure 21 Exceptions in the Trace Records window Explanation of Exception frames Keil uVision and Microsemi SmartFusion Entry when the exception enters Exit When it exits or returns Return When all the exceptions have returned including any Cortex M3 tail chaining 18 Copyright 2011 ARM Ltd All rights reserved www keil com 9 PC Samples Tracing u Vision can display a sampling of the program counter values in the Trace Records window PC Samples is configured in the Trace Records window This window is opened with View Trace Records or the drop down menu shown here 1 Open the Trace Configuration window by clicking on Debug Debug Settings Enable PC Samples by checking Periodic in the PC Sampling area Disable EXCTRC and the TimeStamps Click on OK twice to return Exceptions Counters ye E Click on RUN to start the program 6 Open the Trace Records window PC Samples will be displayed as shown in Figure 22 The values displayed in the PC column gives you an indication where the program is spending its time x Type Ove Num Address Daa PC Cycles PC Sample bs p0000336H 3034007362 31936 91 960000 PC Sample kas BOOO0S3EH 3034023746 31937 09206316 PC Sample m BOOO033EH 30340401 30 31937 26452632 PC Sample bs BOO0033EH 3034056514 31937 43698947
52. reads and or writes TIP ULINKpro can process SWV information much faster than the ULINK2 or ULINK ME can This results in fewer dropped frames especially with high data transfer rates out the SWO pin Data overruns are often associated with a fast stream of data reads and writes which are set in the Logic Analyzer Minimize these issues by displaying only the information you really need The A2F500 can output SWV frames much faster than the A2F200 therefore much less susceptible to overloading and dropping frames at high data rates 9 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com Cortex M Target Driver Setup _ x Debug Trace Flash Download Core Clock 0 098000 MHz W Trace Enable G6 rrace Events a CPI Cycles per Instruction b I EXC Exception overhead c SLEEP Sleep Cycles d 7 LSU Load Store Unit Cycles l FOLD Folded Instructions f M EXCTRC Exception Tracing Trace Port m Timestamps Senal Wire Output UART NRZ Enable Prescaler 16 SWO Clock Prescaler 1 M Autodetect SWO Clock 0 098000 MHz Enor lt 5 Port not selected PC Sampling FPrescaler 102416 Periodic Period Disabled l onData RAW Sample ITM Stimulus Ports 31 Pott 2423 Pot 1615 Pot 8 7 Pot 0 Enable OxFFFFFFFF Perei Wl ee ill Privilege Ox000000068 Port 31 24 Iv Port 23 16 I Port 15 8 I Port
53. s 11 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 1 Creating a Global Variable We will add a Global Variable to use in our demonstrations 16 vozat unsigned long led mask 1 lt oo 1 volatile unsigned long sysTickCnt 1 Open the source file Blinky c by clicking on its tab 19 Lint count o 2 Create a global variable count near line 18 as in Figure 9 1g9 woid esl ioe HANGAR ore A 20 aysTicklnt int count 0 a 4 3 Add the line count near line 48 22 23 void Delay unsigned long tick i 4 Ifin Debug mode exit it EN Bnei one tong Syorlekenty FE 26 Systickent SysTickCnt 5 Compile the project You must get no errors or a7 while SysTick nt systickent lt t warnings See the bottom left corner for the Build Output 28 window 29 mm a0 l l l 6 Program the Flash It will Verify OK Jlijint main void a2 int num 1 7 Enter Debug mode N eee 8 Click on RUN gt WATCHDOG gt WDOGENABLE Ox4C6E55Fa Leave this running for the Watchpoint example on the next af SysTick_ Config SystemCoreClock 1000 a0 page _ 39 GPIO gt GPIO 6 CFG 5 40 4 for 77 i 42 f Calculate nat Cyl pica LED NUI 43 num dir Ad if num LED NUM dir 1 nur 45 else if inumn lt 0 dir 1 nur 46 GPIO gt GPIO OUT s led mask nur A Delay 5So00 48 Counet r 49 GPIO gt GPIO OUT led mask nur Ail Delay Soo
54. s SWV can t see DMA transfers This is because by definition these transfers bypass the CPU and SWV can only see CPU actions 3 Copyright 2011 ARM Ltd All rights reserved Keil Vision and Microsemi SmartFusion www keil com 4 Hardware We will examine two SmartFusion boards and will focus on the smaller one the A2F EVAL KIT A2F DEV KIT See Figure 1 It is connected to a ULINK ME in the upper right corner This is referred by Microsemi as the SmartFusion Development Kit This kit is populated with a SmartFusion A2F500M3G device This board was once available with an A2F200 device but this option is no longer available The A2F500 Serial Wire Viewer works at full speed The A2F200 SWV runs at 98 KHz A2F EVAL KIT See Figure 2 It is shown with a Keil ULINK2 USB to JTAG SWD adapter This is referred by Microsemi as the SmartFusion Evaluation Kit This kit is populated with an AF200M3G The A2F200 device has the Serial Wire Viewer SWV speed limited to 98 KHz Debug Adapters A Keil ULINK2 ULINK ME ULINKpro or a Segger J Link black case version 6 or later can be used ULINK2 and ULINK ME are functionally the same The ULINKpro is the same as the other ULINKs but faster flash programming and with the addition of ARM ETM trace support SmartFusion does not support ETM TIP Earlier versions of ULINK ME provide 3 3 volts power to a target board through JTAG connector pin 1 You might want to remove this by cutting the pin 1 lead or re
55. t 5 more Useful Information 24 1 Creating a new u Vision project from scratch 24 2 Running Blinky from RAM 23 3 SmartFusion eNVM Flash Programming 27 4 TCP IP Keil http demonstration 28 5 ARM JTAG SWD adapter connector schematics and the New ULINK ME 29 6 Acronym List 30 7 Overloading the SWO pin 30 8 Top Six Reasons why you can t get SWV working 31 9 Programming the A2F EVAL KITBoard F2 device FPGA Flash 32 2 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 1 Serial Wire Summary We have three basic debug systems as implemented in SmartFusion Cortex M3 devices L es 3 4 SWV and ITM data output on the SWO pin located on the standard JTAG debug connector ITM is a printf type viewer ASCII characters are displayed in the Debug printf Viewer in u Vision Memory Reads and Writes in out the JTAG SWD ports The Memory and Watch windows use this technology Breakpoints and Watchpoints are set unset through the JTAG SWD ports These are all completely controlled through u Vision via a ULINK 2 Usefulness of the Trace SWV Trace adds significant power to debugging efforts Problems which may take hours days or even weeks in big projects can often be found in a fraction of these times with a trace Especially useful is where the bug occurs a long time before the consequences are seen or where the state of the system disappears with a change in scope s or R
56. t breakpoint by the red box This Be ey ee ke aa Se must be set on a gray box which indicates there is an else if num lt 0 dir 1 num 0 i GPIO gt GPOUT led_mask nun assembly instruction present Line 45 has no assembly Delay 500 count instructions while 46 does GPIO gt GPOUT led mask nur Delay 500 count Figure 18 Breakpoint set on Line 51 x 2 The Breakpoints window See Figure 19 Open it with Current Breakpoints Debug Breakpoints or Ctrl B Itis accessible only in caio i Debug mode and when the program is stopped Watchpoints Access Breaks are also entered in the Breakpoints window To create an entry Access A Expression Read JF Write 1 Enter the appropriate data in the window EE ai l F Bytes 2 Click on Define Command ee 3 Click on Close Kill All cose Help Figure 19 Breakpoints window To modify an entry 1 Double click on the entry It will be brought down into the bottom area 2 Make your modifications 3 Click on Define to enter it 4 You will have to delete the original or disable it by un checking the box 1 Hardware BPs are not eligible for all options shown in Figure 19 although Count is available 2 Youcan disable a BP by un checking the box in Figure 19 in the Current Breakpoints area 3 wuVision will allow only the available BPs to be set TIP This is the same window used to create and m
57. tFusion has 2 Watchpoints Watchpoints must be configured in Debug mode and with the CPU halted How to set a Watchpoint l ae oe r 8 9 Stop the program and remain in Debug mode Open the Breakpoint window through View Breakpoints or Ctrl B Figure 15 opens up Watchpoints are created in the bottom half of Figure 15 and are defined and listed in the top half Enter the count in the bottom half of the Breakpoints window Figure 15 Click Read and Write Figure 15 says the program will be halted if the value of 0x22 is written to or read once from the variable count Count 1 The other entries are the default settings Click on Define and the Watchpoint moves to the upper half as in Figure 16 Click on Close Set count to less than 0x22 in the Watch window if necessary or the Watchpoint will never activate The Trace Records window must be open Double click on it to clear it Click on RUN and wait for the program to stop 10 Scroll to the bottom of the Trace Records window and the data write is displayed as in Figure 17 11 Delete kill this Watchpoint else it will interfere with your other examples 12 Remove all variables from the Logic Analyzer Breakpoints Current Breakpoints Keil Vision and Microsemi SmartFusion Expression count 0x22 Command Define Kill Selected Kill All Access IV Read V Write l Bytes MV Objects Figure 15 Setting up co
58. the Enter key Click on OK jg PAM e AFM Flash In the main menu click on the Select target window and select your RAM target E4M You can now configure the target RAM which will be different from A2F200M3F Flash 2 Create an initialization file to configure SmartFusion when Debug mode is entered 7 oe We will use u Vision to create an initialization file to configure SmartFusion to use RAM Select File New and a blank text window will be created Enter the following text FUNC void Setup void _WDWORD 0x40006010 Ox4C6E55FA Disable watchdog SP _RDWORD 0x60080000 Setup Stack Pointer _RDWORD 0x60080004 Setup Program Counter _WDWORD OxEOOOEDO8 0Ox20000000 Setup Vector Table Offset Register LOAD L INCREMENTAL Download Setup Setup for Running g main Select File Save As and enter ram ini and press the Enter key 3 Enter the memory addresses into p Vision 10 11 2 13 14 15 4 Open the Target Options menu AN The Target tab will be selected as in Figure 31 Read Only Memory Areas configures the program space Read Write Memory Areas allocates data We will divide up the SmartFusion RAM 64K in this case between the program and data spaces RAM in the SmartFusion we are using starts at 0x2000_0000 and ends at 0x2001 0000 64 K bytes Enter ROM Start 0x2000 0000 and size 0x8000 as shown in Figure 31 Enter RAM Start 0x2000_8000 and size 8000 as sho
59. ugging Irit File a Edit i f x PA cortex Target Driver see UU UUU x Debug Trace Flash Download Comma Argumet r Download Function RAM for Algorithm Loap Erase Full Chip V Program Erase Sectors JV Verify Start 0420000000 Size 0x0800 C DonotErase J Reset and Run Programming Algorithm Address Range A2FxxxM3 256kB Flash On chip Flash 256k OO000000H OOO03FFFFH Start Size Figure 32 Flash Programming Configuration SmartFusion BootLoader SmartFusion contains a bootloader in its eNVM Flash At RESET this bootloader runs first and then control is passed to the user program typically located at Ox0 oe With Blinky loaded and in Debug mode click on the RESET icon P1 Note the addresses in the disassembly window are in the area of 0Ox6000_O0000 Probably at 0x6008_051C which is the start of the bootloader code Run and stop the program Now the addresses are in the user code in the area of 0x0 This is because the Flash has now been remapped by the bootloader 27 Copyright 2011 ARM Ltd All rights reserved ei ision and Microsemi SmartFusion www keil com Keil uV d M SmartF keil 4 TCP IP Keil http demonstration Keil has ported its TCP IP stack to the SmartFusion Ethernet peripheral This TCP IP is part of the Keil RL ARM software suite Contact Keil sales for more information on RL ARM A web server http demonstration is available on www kei
60. unt Help x Curent B Expression Count fi 4 Command Kill Selected Kill All 00 A readwrite 0x20000010 len 4 count 0x22 Close Breakpoints x El Access Read J Write Size 7 T Bytes a F Objects Help Figure 16 count Defined TIP In the definition of a Watchpoint legal operatives are amp amp amp lt gt lt gt and Trace recoras x Type Ovi Num Address Daa Pc Dy Cyces Data Read Data Write Data Read Data Write Data Read Data Write Data Read Data Write Data Read Data Write Data Read Data Write Data Read Data Write Data Read Data Write Data Read Data Write Data Read Data Write 2000001 0H 00000018H 600003E 8H 20000010H 00000019H 600003EEH 2000001 0H 00000013H 600003E 8H 2000001 0H 00000014H 600003EEH 2000001 0H 00000014H 600003E 8H 2000001 0H 0000001BH 600003EEH 2000001 0H 0000001BH 600003E 8H 2000001 0H 0000001CH 600003EEH 2000001 0H 0000001CH 600003E 8H 2000001 0H 0000001DH 600003EEH 2000001 0H 0000001DH 600003E 8H 2000001 0H 0000001EH 600003EEH 2000001 0H 0000001EH 600003E 8H 2000001 0H 0000001FH 600003EEH 2000001 0H 0000001FH 600003E 8H 2000001 0H 00000020H 600003EEH 2000001 0H 00000020H 600003E 8H 2000001 0H O0000021H 600003EEH 2000001 0H 600003E 8H 2000001 0H UU00002TR 00000022H 600003EEH x xKMKXM MK KM KKM MR KK KK KKK KK 12675006160 12675139137 12775005159 12775
61. upport for ARM7 Cortex M1 and Cortex M3 Nothing more to buy 8051 support is separate and uses Vision A full feature RTOS is included with MDK RTX by Keil No royalty payments are required Serial Wire Viewer trace capability is included for SmartFusion Cortex M3 RTX Kernel Awareness window It is updated in real time and uses no system resources Choice of USB adapters ULINK2 ULINK ME ULINKpro and Segger J Link black version Kernel Awareness for Keil RTX CMX Quadros and Micrium All RTOSs will compile with MDK Keil Technical Support is included for one year This helps you get your project completed faster oS A e a Serial Wire Viewer Serial Wire Viewer SWV displays PC Samples Exceptions including interrupts data reads and writes ITM CPU counters and a timestamp This information comes from the ARM CoreSight debug module integrated into the SmartFusion Cortex M3 SWV does not steal any CPU cycles is non intrusive and requires no stubs in your source code This document details these features Serial Wire Viewer SWV Real time Read and Write to memory locations for Watch Memory and RTX Tasks windows Breakpoints and Watchpoints Access Breaks RTX Viewer a kernel awareness program for the Keil RTOS RTX Keil TCP IP stack is one component of RL ARM An http server example is described on page 28 A A Keil Contact Information www keil com USA North and South America Europe and Asia Keil An ARM C
62. vices Keil supports plus some secret ones Locate the Actel directory open it and select A2F200M3F Note the device features are displayed Click on OK A window opens up asking if you want to insert the default SmartFusion startup code to your project Click on Yes This will save you a great deal of time In the Project Workspace in the upper left hand of u Vision open up the folders by clicking on the beside each folder We have now created a project called Mytest and the target hardware called Target 1 with one source file startup_A2FxxxM3 s Click once carefully on the name Target 1 or twice if not already highlighted in the Project Workspace and rename Target 1 to something else I chose Smart as shown in Figure 30 Press Enter to accept this Note the Target selector also changes to Smart Click on the to open up the directory structure if necessary You can create many target hardware configurations including a simulator and easily select them Select the source files L Using MS Explore right click on Windows Start icon copy blinky c core_cm3 c and system_A2FxxxM3x c from E Smart C Keil ARM Boards Actel SmartFusion Blinky to the Keil SmartFusion FAE k e eee folder Bey Source Files In the Project Workspace in the upper left hand of u Vision right click on ai be pe Smart and select Add Group Name this new group Source Files and 5 E a press Enter a stdnt h oo
63. width of the SmartFusion SWO pin a few Serial Wire Viewer features might not work consistently as described These will be updated as soon as possible For more information Contact Keil or your local representative as listed on www keil com distis Obtain the Keil ULINKpro User Manual for information on Serial Wire Viewer Visit www keil com for the latest version of this document For SmartFusion www actel com products SmartFusion For additions comments or corrections to this document contact Robert Boys bob boys arm com SIKEIL IKEL Development Tools Tools 9Y ced Getting ae won cat b J 2 KEIL Development Tools v A ARM Cx51 C166 31 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 10 Programming the A2F EVAL KITBoard F2 device FPGA Flash eNVM 1 This is to program the FPGA eNVM Flash to connect SmartFusion to the board LEDs in order for the Keil examples to work correctly Do not confuse this with programming the SmartFusion Cortex M3 Flash They are different 2 Ensure that jumpers JP7 and JP10 are populated in the 1 2 position and that the 2 USB cables are connected to the board 3 Open the FlashPro Programming Software FlashPro is available stand alone or as part of the Libero IDE FPGA development software Both are free from the Actel com website 4 Create a new programming project by clicking the New Project button
64. wn in Figure 31 Do not click on OK yet on chip on chip Fo ROMI Jox20000000 Jox8000 a 7 RAMI Jox20008000 joxe000 E T Roma C T RAMZ Hl Figure 30 Configuring Memory Area partial screen 32K of RAM is now available for your program code and 32 K of RAM for data You can use other values You must make sure there is enough RAM for your program and variables to fit into 4 Create a directory for the compiled files to be stored 16 Now we will create a directory for the compiled files Select the Output tab 25 Copyright 2011 ARM Ltd All rights reserved Keil uVision and Microsemi SmartFusion www keil com 17 Click on Select Folder for Objects box Select Create New Folder icon c New Folder is entered 18 Rename it RAM and press Enter 19 Double click on this new folder to add it in the Path box Click on OK Your compiled files will go here 5 Select ram ini to be executed when Debug mode is entered 4T 20 Select the Debug tab Options for Target should still be open Use aN if you closed it i 21 In the Initialization File box enter ram ini as shown in Figure 32 You can use the Browse icon 22 ram ini will be executed every time you enter Debug mode 23 Unselect Load Application at Startup This makes sure your program isn t loaded twice Run to main will be grayed out This function will be done by the last command in the ram ini file 24 Click on Utilities and uncheck Update Target before
65. yed Note the data values are incrementing Double click in the Trace Records window to clear it Open Debug Debug Settings and select the Trace tab Select on Data R W sample and click on OK twice This will add the PC column Click on RUN Figure 14 Explanation 1 Data Read to count address 0x2000_0018 the data value 4C by the instruction at OxOO00_O4EC 2 Data Write to count address 0x2000_0018 the data value 4D by the instruction at OxO000_04F4 The time these events occurred is timed by both CPU cycles and in seconds Time s The X in the DLY column indicates the timestamp is delayed from its true value because of overflow Keil uVision and Microsemi SmartFusion x 66675153245 6803958 0658 Data Read 20000012H QO00004CH DOOWMMECH A Data Write 20000012H Q000004DH QO00004F4H A 66675296511 680360 06643 Data Read 20000012H Q000004DH DO004ECH A 667 6515325 681379 11486 Data Write 20000012H 0000MHEH QO0004F4H A 66775287166 681300 48128 Data Read 20000012H 0000MHEH OIIIHECH A 660 5153245 682399 522790 Data Write 20000012H 00000MFH QO0004F4H A 66875296811 682400 88592 Data Read 20000012H QOO00D04FH QO00M4ECH A 6697615325 683419 99119 Data Write 20000012H 00000050H 0000F 4H A G869 528707 683421 296 0 Data Read 20000012H 00000050H DIIIHECH A 6 7075153245 684440 33923 Data Write 20000012H 00000051H QOO0004F4H A 6 075286943 684447 7 0929 Data Read 20000012H 00000051H OIIIHECH A 67553257 685460 747 52

Download Pdf Manuals

Related Search

Related Contents

Weider WEBE7710 User's Manual  Avira Professional Security  "取扱説明書"  MANUAL DO USUÁRIO  Introduction Introduction - Bienvenue sur Web    SERVICE MANUAL _ ' US Mode,  MULTー S。LAR CHARGER  Manual de usuario  User Manual of DS-2DF1-615/605H  

Copyright © All rights reserved. Failed to retrieve file