Issue on stack size handling

[naveen]

Hi,

I'm using pca10040 board. For my requirement i'm using FreeRTOS. While creating task we need to set stack size for each task.

For that i created only one task with some range of stack size. If stack size below or equal to 678 my task is scheduling fine. If more than 678 its not scheduling, its hanging.

why that one is hanging? is there any limitations for setting stack size?

I'm a newbie on this. Can anyone guide me on this ?

UNUSED_VARIABLE(xTaskCreate( vLed1Function, "L1", configMINIMAL_STACK_SIZE + 618, NULL, 1, &xLed1Handle )); // LED1 task creation

(Note : configMINIMAL_STACK_SIZE = 60)

Thank You,

[Justin]

Instead of ignoring the return value of xTaskCreate, you should check the value. See www.freertos.org/a00125.html

More than likely you're getting an out of memory error and need to increase the heap size for FreeRTOS, see FreeRTOSConfig.h

[Justin]

I wouldn't change configMINIMAL_STACK_SIZE. Just change configTOTAL_HEAP_SIZE. By changing the minimal stack size you're increasing the stack size for the idle task and the timer task.