Use wake up pin that is not dependent on analog power #3
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The previous version of the example sketch
WakeFromPin.ino
used an analog pin for the wake-up. However, the function that turns off the peripherals also turns off power to the analog pins. As a result they cannot sink current even when using an external pull-up resistor, it doesn't work. This PR changes the example so that it uses a digital pin for the wake up.Also, interacting with the PMIC in the interrupt handler caused the PMIC to not always turn off the lanes. Moving it into the application loop solves this.