GPIO pins, toggle on reboot?

GoogleGroups
1

Hi,

I’m looking at buying a Beagleboard-XM for a work project. We’re planning to use it as a remote monitoring device. If a piece of hardware freezes and we need to reboot it, we want to be able to use the GPIO pins on the Beagleboard to send a signal to power-off the hardware. My question is, do the GPIO pins toggle between high and low when the Beagleboard itself is reset? If the Beagleboard was to crash, and the GPIO pins toggle to high, that would send the reset signal to our other hardware and cause all of it to reset too. It’s vital that our hardware stays online unless we absolutely need to force a reboot.

Thanks,

Gareth

2

Sounds to me like you need to latch the GPIO so that you only get a High if you explicitly clock the latch.