Configuration of GPIO to wake up from System Off

RE: Configuration of GPIO to wake up from System Off

mikelugarte — Wed, 22 Feb 2017 08:10:26 GMT

I got it!! The only thing I had to change was the pin sense. This is how I did: nrf_gpio_cfg_sense_input(4, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_HIGH);

Thanks for the help Daniel!!

RE: Configuration of GPIO to wake up from System Off

mikelugarte — Wed, 22 Feb 2017 08:02:07 GMT

Finally I put pin number 4 like the pin to wake up from system off. Now it wakes up in the moment that goes to sleep, without being activated the pin.

RE: Configuration of GPIO to wake up from System Off

Jørgen Holmefjord — Wed, 22 Feb 2017 08:01:36 GMT

Which online compiler are you using? You are still running the compiled code on your board?

RE: Configuration of GPIO to wake up from System Off

mikelugarte — Wed, 22 Feb 2017 07:45:19 GMT

Sorry, now I used nrf_gpio_cfg_sense_input() but it keeps not working. I am not in debug mode, because I am using an online compiler.

RE: Configuration of GPIO to wake up from System Off

Daniel Wang — Tue, 21 Feb 2017 15:21:39 GMT

Why do you use nrf_gpio_cfg_input()? I said you should use nrf_gpio_cfg_sense_input().

Also note that if you are in debug mode, you will wake up from sleep mode immediately. Try to turn the DK on and off to exit debug mode, if it still doesnt work with nrf_gpio_cfg_sense_input().

RE: Configuration of GPIO to wake up from System Off

mikelugarte — Tue, 21 Feb 2017 15:15:02 GMT

I use the P0_4. This is how I configure GPIO pin:nrf_gpio_cfg_input(RecibePin, nrf_gpio_pin_pull_t pull_config) To enter to system off mode I use NRF_POWER->SYSTEMOFF=1 command.

RE: Configuration of GPIO to wake up from System Off

Daniel Wang — Tue, 21 Feb 2017 15:02:07 GMT

What pin number did you use? How are you entering sleep mode? You need to pull the pin low to wake up.

RE: Configuration of GPIO to wake up from System Off

mikelugarte — Tue, 21 Feb 2017 14:48:59 GMT

I used your settings but it's not working with my program. My controller still in System Off. I changed PIN NUMBER for one of my pin names, which is a digital input.

RE: Configuration of GPIO to wake up from System Off

Daniel Wang — Tue, 21 Feb 2017 13:53:36 GMT

You can configure the pin like this to wake up from sleep:

nrf_gpio_cfg_sense_input(PIN NUMBER, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);

RE: Configuration of GPIO to wake up from System Off

Jørgen Holmefjord — Tue, 21 Feb 2017 13:46:29 GMT

Hi,

You can find examples on how to wakeup from system on and system off mode on our GitHub page.

Best regards,

Jørgen