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Merge pull request #105 from Gottox/patch-1

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Update MemoryAnalysis.md
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2020-10-27 19:49:12 +01:00
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# Memory analysis
## FreeRTOS heap and task stack
FreeRTOS statically allocate its own heap buffer in a global variable named `ucHeap`. This is an aray of *uint8_t*. Its size is specified by the definition `configTOTAL_HEAP_SIZE` in *FreeRTOSConfig.h*
FreeRTOS statically allocate its own heap buffer in a global variable named `ucHeap`. This is an array of *uint8_t*. Its size is specified by the definition `configTOTAL_HEAP_SIZE` in *FreeRTOSConfig.h*
FreeRTOS uses this buffer to allocate memory for tasks stack and all the RTOS object created during runtime (timers, mutexes,...).
The function `xPortGetFreeHeapSize()` returns the amount of memory available in this *ucHeap* buffer. If this value reaches 0, FreeRTOS runs out of memory.
@@ -75,4 +75,4 @@ add_definitions(-D__STACK_SIZE=8192)
*TODO*
#Tools
- https://github.com/eliotstock/memory : display the memory usage (FLASH/RAM) using the .map file from GCC.
- https://github.com/eliotstock/memory : display the memory usage (FLASH/RAM) using the .map file from GCC.