api calls in ISR

[jumjum123]

Somewhere in my mind is a post use of api calls in ISR
How can I find more information about that.
Is there something like a list of free_to_be_used_in_ISR

Actual problem is around using gettimeofday, where application crashes from time to time

[ESP_Sprite]

Essentially, all FreeRTOS calls that end in fromISR can be called from an ISR. Apart from that, no esp-idf calls, unless explicitly indicated otherwise, are guaranteed to behave themselves when called from an ISR.

[jumjum123]

So gettimeofday should not be called in ISR ?
What could I use instead ?

[WiFive]

https://github.com/espressif/esp-idf/bl ... main.c#L71