Hands-On RTOS with Microcontrollers

Important notes

RAM on MCU-based embedded systems is usually a scarce resource. When increasing the heap space available to FreeRTOS (configTOTAL_HEAP_SIZE), you'll be reducing the amount of RAM available to non-RTOS code.

There are several factors to be aware of when considering increasing the heap available to FreeRTOS via configTOTAL_HEAP_SIZE:

• If a significantly sized non-RTOS stack has been defined – that is, the stack that is used by any code that isn't running inside a task (typically configured inside the startup file). Initialization code will use this stack, so if there are any deep function calls, this stack won't be able to be made especially small. USB stacks that have been initialized before the scheduler is started can be ...