Function esp_idf_sys::rtc_isr_register

pub unsafe extern "C" fn rtc_isr_register(
    handler: intr_handler_t,
    handler_arg: *mut c_void,
    rtc_intr_mask: u32,
    flags: u32
) -> esp_err_t

@brief Register a handler for specific RTC_CNTL interrupts

Multiple handlers can be registered using this function. Whenever an RTC interrupt happens, all handlers with matching rtc_intr_mask values will be called.

@param handler handler function to call @param handler_arg argument to be passed to the handler @param rtc_intr_mask combination of RTC_CNTL_INT_ENA bits indicating the sources to call the handler for @param flags An ORred mask of the RTC_INTR_FLAG defines. You can pass different flags to it to realize different purpose. If 0, the interrupt will not handle anything special. If you pass RTC_INTR_FLAG_IRAM, means the interrupt can be triggered with cache disabled. @return - ESP_OK on success - ESP_ERR_NO_MEM not enough memory to allocate handler structure - other errors returned by esp_intr_alloc