Check if FreeRTOS tasks are still running

Using Arduino Project Guidance
1

Hello,

i created a project using freeRTOS. I´m currently searching for a option, how to check that my freeRTOS tasks are still running. I first thought about using a Watchdog, but somehow that doesnt work. Some users talked about creating a check task, that checks that the other tasks are still running (for example by checking counters that are incremented within the tasks). But i can´t figure out, how to properly implement that. Does anybody know how that works or has a code example?

Many thanks

2

The freeRTOS kernel knows about the state of every task. This were the first instance to ask. From outside it's near impossible to distinguish a terminated task from a task waiting (forever?) for some event.

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Just 'ask' freeRTOS if a task is still running, FreeRTOS API categories

4

thank you very much. Is there a option how i could say to the program "if that task (contineously running task) doesnt reach that point after 5 seconds, do a restart" ?

5

I've got an ESp32 running freeRTOS that has been running for 3.2 years. Tasks do not fail, when properly written.

I'd say what you can program is dependent upon your skills.

6

Hi @kanstile

There are a number of FreeRTOS functions that can return a task's or tasks' current state.

There's the eTaskGetState(), vTaskGetTaskInfo() or uxTaskGetSystemState() functions. There's also vTaskList() for debug purposes.

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