Hello all!
The raspberry pi has a feature where you can set the dtoverlay to initiate a gpio-shutdown command when gpio pin 3 goes to ground, and if you state-change the pin while off, it will boot the device.
Is there a way to set this up for the T4? It's gpio compatible, but I'm not sure there's a way to access the same hardware layers.
Similarly, can anyone think of a way to keep the barrel jack powered, but trigger sleep/wake from an external source? Think a module where there is constant 12v on the jack, but say... a key switch that can also provide 12v. This is similar to how a car would be wired. The radio (for this example) is under constant power, but only turns on when you turn on the key.
I'm not sure how to get gpio to my liking on the T4. I've only done tons of gpio on pi's. Is there no interface inside of the T4's android that allows access to modify gpio? I have to build it from the code?
The raspberry pi has a feature where you can set the dtoverlay to initiate a gpio-shutdown command when gpio pin 3 goes to ground, and if you state-change the pin while off, it will boot the device.
Is there a way to set this up for the T4? It's gpio compatible, but I'm not sure there's a way to access the same hardware layers.
Similarly, can anyone think of a way to keep the barrel jack powered, but trigger sleep/wake from an external source? Think a module where there is constant 12v on the jack, but say... a key switch that can also provide 12v. This is similar to how a car would be wired. The radio (for this example) is under constant power, but only turns on when you turn on the key.
I'm not sure how to get gpio to my liking on the T4. I've only done tons of gpio on pi's. Is there no interface inside of the T4's android that allows access to modify gpio? I have to build it from the code?