debug_freertos
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debug_freertos [2016/01/29 11:18] superstage [Openocd rtos awareness] |
debug_freertos [2018/05/22 10:33] (current) |
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| + | ====== Debug Freertos ====== | ||
| + | ===== vTaskList ===== | ||
| + | To display the list of tasks states : | ||
| + | <code c> | ||
| + | //Approximately 40 bytes per task should be sufficient | ||
| + | char buffer[400]; | ||
| + | vTaskList(buffer); | ||
| + | /* example of output */ | ||
| + | |||
| + | // Name State Priority Stack Num | ||
| + | //************************************* | ||
| + | // CANAPP R 2 178 3 | ||
| + | // DBG R 1 42 1 | ||
| + | // IDLE R 0 116 5 | ||
| + | // LED B 1 238 4 | ||
| + | // MCTRL B 4 202 2 | ||
| + | </code> | ||
| + | [[http://www.freertos.org/a00021.html#vTaskList|For more information]]. | ||
| + | |||
| + | ===== configASSERT ===== | ||
| + | Enable you to check your config with a debugger. | ||
| + | <code c> | ||
| + | /* Define configASSERT() to disable interrupts and sit in a loop. */ | ||
| + | #define configASSERT(x) if( ( x ) == 0 ) { taskDISABLE_INTERRUPTS(); for( ;; ); } | ||
| + | </code> | ||
| + | |||
| + | [[http://www.freertos.org/a00110.html#configASSERT|For more information]]. | ||
| + | ===== Openocd rtos awareness ===== | ||
| + | |||
| + | Openocd is able to give you information about your system's tasks. For example, for the QuimDC we have added : | ||
| + | <code shell> | ||
| + | $_TARGETNAME configure -rtos auto | ||
| + | </code> | ||
| + | to "common/make/quimesis_stm32f10x.cfg". | ||
| + | |||
| + | |||
| + | |||
| + | You must also add [[https://github.com/arduino/OpenOCD/blob/master/contrib/rtos-helpers/FreeRTOS-openocd.c|OpenOCD/contrib/rtos-helpers/FreeRTOS-openocd.c]] to your project and this line : | ||
| + | <code shell> | ||
| + | LDFLAGS += -Wl,--undefined=uxTopUsedPriority | ||
| + | </code> | ||
| + | when using gcc as specified in "common/lib/freertos/FreeRTOS-openocd.c" | ||
| + | |||
| + | [[http://openocd.org/doc/html/GDB-and-OpenOCD.html|For more information]]. | ||
| + | ===== Hook Functions and Trace Hook Macros ===== | ||
| + | * [[http://www.freertos.org/a00016.html|Hook Functions Documentation]] | ||
| + | * [[http://www.freertos.org/rtos-trace-macros.html|Trace Hook Macros Documentation]] | ||
| + | |||
| + | |||
| + | ===== Remove compiler optimization ===== | ||
| + | |||
| + | To remove the compiler optimization step for debugging add **-O0** to all the compile commands. You can also add **virtual** to some variable to be able to see their value in the debugger. | ||
debug_freertos.txt ยท Last modified: 2018/05/22 10:33 (external edit)
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