- FreeHeap = 0, StackHighWaterMark = 0, xTaskGetTickCount = 0
- xQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( unsigned long ) );
- FreeHeap = 76696, StackHighWaterMark = 0, xTaskGetTickCount = 0
- xReturned = xTaskCreate( prvQueueReceiveTask, “Rx”, configMINIMALSTACKSIZE, NULL, mainQUEUERECEIVETASK_PRIORITY, NULL );
- prvQueueReceiveTask created.
- FreeHeap = 74536, StackHighWaterMark = 501, xTaskGetTickCount = 0
- xReturned = xTaskCreate( prvQueueSendTask, “TX”, configMINIMALSTACKSIZE, NULL, mainQUEUESENDTASK_PRIORITY, NULL );
- prvQueueSendTask created.
FreeRTOS memory management understanding
Hi All,
Configuration I am using as below :
define configMINIMALSTACKSIZE ((uint16t)512)
define configTOTALHEAPSIZE ((sizet)(75 * 1024))
define configLARGESTACKSIZE ((uint16_t)3072)
Heap memory = 75KB
3 threads created, thread 1 with 512 stack, thread 2 with 512 stack and thread 3 with 3KB
Following is function call sequence and respective memory allocation debug message :-
FreeRTOS memory management understanding
As is documented in the API documentation, in the source code, and in
the book, the stack size parameter to xTaskCreate() is specified in
words. The numbers you have provided would indicate that you are using
a 32-bit processor. Each item on the stack is 32-bits, so when you
specify a stack size of 512 words 2K bytes get allocated. When you
specify a stack of 3K words, 12K bytes get allocated.
FreeRTOS memory management understanding
Thank you for information.