Small problem with using the GPIO to power system ON/OFF

RE: Small problem with using the GPIO to power system ON/OFF

Simon Bellemare — Fri, 12 May 2017 15:47:33 GMT

Thank you!

RE: Small problem with using the GPIO to power system ON/OFF

bjorn-spockeli — Fri, 12 May 2017 13:44:04 GMT

Yes, that should be possible as long as you have SENSE enabled on that specific pin. In the GPIO interrupt handler you need to check if you entered it by checking RESETREAS register( it will set one bit to 1 if the chip is woken up from a GPIO pin). In that case you should not re-enter System OFF. If you enter the GPIO interrupt handler and the bit in the RESETREAS is not set, then you should enter System OFF.

RE: Small problem with using the GPIO to power system ON/OFF

Simon Bellemare — Fri, 12 May 2017 13:29:09 GMT

Yes, thank you. I did fix the problem I had but I came across another one. I would like to power ON/OFF my device using the same GPIO pin as i would send a logical 1 for power down and a logical 1 for power ON coming from another IC. Is that possible?

RE: Small problem with using the GPIO to power system ON/OFF

bjorn-spockeli — Fri, 12 May 2017 11:13:08 GMT

Hi Simon,

I recommend that you take a look at this Github repo, it contains several powerdown examples.'

Best regards

Bjørn