In FreeRTOS, each task has its own, separate stack. The task stacks are allocated on
the heap when using dynamic memory allocation. Except for the idle task, the stacks are
allocated when calling xTaskCreate(), where one of the input parameters is
the stack size for the task.
The idle task is created when calling vTaskStartScheduler() to
ensure that there is always at least one task that is able to run. The idle task's stack size
is given by configMINIMAL_STACK_SIZE in the configuration file.
It is important that the sum of allocated stack memory, as
well as allocated memory from queues, semaphores, etc., does not exceed the heap size defined
in configTOTAL_HEAP_SIZE.