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- Questions on dtoverlay gpio-poweroff - Raspberry Pi Stack Exchange
gpio=10=op,dh The pin goes high within a second of startup, but about 5 seconds later goes low again I suspect that the gpio setting happens; then the gpio-poweroff overlay overrides it The behavior after issuing the shutdown command remains as before Next I removed the 'gpio' line and added the 'active_low' parameter to the dtoverlay line:
- A Power Button For Raspberry Pi, Courtesy Of Device Tree Overlays
Name: gpio-poweroff Info: Drives a GPIO high or low on poweroff (including halt) Using this overlay interferes with the normal power-down sequence, preventing the kernel from resetting the SoC (a
- External Button Shutdown for Raspberry Pi · GitHub
Enabling this overlay will prevent the ability to boot by driving GPIO3 low Load: dtoverlay=gpio-poweroff,<param>=<val> Params: gpiopin GPIO for signalling (default 26) active_low Set if the power control device requires a high->low transition to trigger a power-down
- Setting dtoverlay=gpio-poweroff prevents the system to power off!!
Enabling this overlay will prevent the ability to boot by driving GPIO3 low Load: dtoverlay=gpio-poweroff,<param>=<val> Params: gpiopin GPIO for signalling (default 26) active_low Set if the power control device requires a high->low transition to trigger a power-down
- Detect shutdown via GPIO - Raspberry Pi Stack Exchange
As you can guess from the trace below, the gpio-poweroff signal provides a useful signal to control the hardware that removes the 5V power input to the RPi; e g a latching relay Finally - there are approximately 50 answers here in RPi SE that mention the gpio-poweroff overlay; I've authored 9 myself You may pick up a few ideas from perusing
- Dtoverlay, gpio-shutdown and gpio-poweroff options not working?
Name: gpio-poweroff; Info: Drives a GPIO high or low on poweroff (including halt) Enabling this; overlay will prevent the ability to boot by driving GPIO3 low Load: dtoverlay=gpio-poweroff,<param>=<val> Params: gpiopin GPIO for signalling (default 26) active_low Set if the power control device requires a
- gpio-poweroff device tree overlay causes kernel panic on RPi 4
Use of this overlay (and the gpio-poweroff mechanism) required that there is an external mechanism to remove the power in response to the GPIO being toggled Failure to do so within the allowed window (3 seconds is the default) results in a kernel warning, followed by undefined behaviour
- Need help getting a GPIO LOW after shutdown - Get Help - OctoPrint . . .
This is pure pi stuff, take a look to boot overlays README, section gpio-poweroff, on your Pi installation Overlays have to be enabled in Pi's config txt like this: dtoverlay=gpio-poweroff,active_low,gpiopin=16 gpio=16=op,dl,pn hint: active_low is not an inverted active, it has an strange behavior during reboot
- How do I make a device tree overlay for just a single GPIO?
You could "misuse" the gpio-poweroff overlay for this Just tested it on GPIO7 Add this line to boot config txt, and reboot: dtoverlay=gpio-poweroff,gpiopin=7,active_low=1 Share Improve this answer Follow answered May 1, 2017 at 12:45 rudolfbyker rudolfbyker 173 2 2 silver
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