HardFault in gpiote handler

[qoboty]

when I call sd_power_gpregret_set in gpiote handler function ,I got HardFault, why?

[RK]

what interrupt priority is your gpiote handler running at? Higher than that for the SVC call? if so you're going to hardfault.

[qoboty]

I find that nrf_drv_common_irq_enable(GPIOTE_IRQn, GPIOTE_CONFIG_IRQ_PRIORITY) in file nrf_drv_gpiote.c priority define in the nrf_drv_config.h

#define GPIOTE_CONFIG_IRQ_PRIORITY APP_IRQ_PRIORITY_HIGH

[RK]

so that's your problem then. As is discussed here most weeks a few times, you can't call sd_* functions from anything other than main context or the lower of the user interrupt contexts.