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Explorer pHAT exit triggering clean-shutdown
This is a fun one. I was playing with my Explorer pHAT and noticed that every time I Ctrl-C'd out of a script I'd get a message;
And yes, the pi would turn off. Every single time.
I don't know why the Explorer pHAT seems to pull BCM 4 low upon exit, when none of my other pHATs do. But I do know why that was triggering a shutdown.
I had also installed (though not in use) the Zero LiPo SHIM and the OnOff SHIM. They both install the clean-shutdown library that does just what it says, shuts down your pi when BCM 4 is held low.
It installs the
In /boot/config.txt add;
Save, exit, reboot. Then you can play around with your Explorer pHAT in peace.
Broadcast message from root@raspberrypi (somewhere):
BCM 4 held low, system shutdown in 5 minutes
Broadcast message from root@raspberrypi:
The system is going down for power-off!
And yes, the pi would turn off. Every single time.
I don't know why the Explorer pHAT seems to pull BCM 4 low upon exit, when none of my other pHATs do. But I do know why that was triggering a shutdown.
I had also installed (though not in use) the Zero LiPo SHIM and the OnOff SHIM. They both install the clean-shutdown library that does just what it says, shuts down your pi when BCM 4 is held low.
It installs the
cleanshutd service, but it didn't respond to my attempts to stop it, so I had to disable it. In /boot/config.txt add;
disable_cleanshutd=1Save, exit, reboot. Then you can play around with your Explorer pHAT in peace.