How to create a ENTER_CRITICAL_SECTION and EXIT_CRITICAL_SECTION in MQX?

[mikedwn]

Hello:

I am trying to port existing code that have macro called "ENTER_CRITICAL_SECTION()" and "EXIT_CRITICAL_SECTION()". I look into the MQX document that doesn't have critical section API.

Does anyone know how to create a MQX called that service "ENTER_CRITICAL_SECTION()" and "EXIT_CRITICAL_SECTION()"?

Thank You

Mike

[c0170]

Hi mikedwn,

can you write us an important detail what did your code protect with critical section ?

Regards,

MartinK

[monXii]

i know this critical section from FreeRTOS ..

.. lock the os and just execute code like without os .. no task switching, and so on ..

[MarkP_ · Accepted solution]

In MQX3.8:

For short code block protection:

_int_disable()

_int_enable()

For other protection lightweigth semaphore:

_lwsem_create()

_lwsem_wait()

_lwsem_post()

Disabling task context switch but allows interrupts to run

_task_stop_preemption()

_task_start_preemption()

~Mark