ESP8266 Community Forum

- Tue Jul 14, 2015 11:29 pm #23293 I'm attempting to register an interrupt handler to be called when a GPIO pin changes logic level. I am trying:

Code: Select allvoid intrHandler(uint32 interruptMask, void *arg) {
   os_printf("Interrupted: %x\n", interruptMask);
   lastIntr = system_get_time();
   gpio_intr_ack(interruptMask);
}

gpio_intr_handler_register(intrHandler, NULL);
gpio_pin_intr_state_set(4, GPIO_PIN_INTR_NEGEDGE);

But I'm not seeing the callback being invoked even though I am pretty sure that I am toggling the signal on the pin. Has anyone had any success using these functions?

Free ESP8266 book available for download here.

- Wed Jul 15, 2015 7:56 am #23322 Did you initialize and route (mux) the gpio properly? Some gpio's are not configured as gpio by default.

- Sat Aug 15, 2015 9:28 am #26065

I'm attempting to register an interrupt handler to be called when a GPIO pin changes logic level. I am trying:

Code: Select allvoid intrHandler(uint32 interruptMask, void *arg) {
   os_printf("Interrupted: %x\n", interruptMask);
   lastIntr = system_get_time();
   gpio_intr_ack(interruptMask);
}

gpio_intr_handler_register(intrHandler, NULL);
gpio_pin_intr_state_set(4, GPIO_PIN_INTR_NEGEDGE);

But I'm not seeing the callback being invoked even though I am pretty sure that I am toggling the signal on the pin. Has anyone had any success using these functions?

Did you manage to get it working? I am also facing similar problem and haven't managed to get it working.

- Tue Aug 18, 2015 11:45 pm #26425 Unfortunately I haven't tried again since my last post. There is enough mystery in the ESP8266 that when I get stuck, I have enough other things to go away and work on that I hope when I come back, more will be known

Free ESP8266 book available for download here.