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Configuration of GPIO to wake up from System Off

Hi,

I am working with a nrf51822 and I have seen that the way to wake up from System Off mode is by a GPIO interrupt. I wanted to know if it is needed to configure previously the GPIO pin to wake it up from System Off mode.

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  • 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.

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  • 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.

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