Is it OK to call sd_nvic_EnableIRQ() in an interrupt handler?

[Paul]

I tried a little, it didn't work. Got hard_fault.

[Krzysztof Chruscinski]

Hi,

you cannot call SoftDevice API from APP_IRQ_PRIORITY_HIGH (1). That is because every SoftDevice API call is triggering SVC interrupt and this interrupt is on level 2 (lower than application high level).

You can call SoftDevice (including sd_nvic_... functions) from APP_IRQ_PRIORITY_LOW (3) and main context.

[Paul]

Thank you!