MMM-PIR Busy Issue

siujd2001

on boot, gpioinfo shows “GPIO21” unused input active-high. first start of npm run start:wayland works as intended.

After CTRL-Q, gpioinfo shows “GPIO21” “lg” input active-high [used pull-down]. Successive npm run start:wayland shows GPIO Busy error.

redfishbluefish

@siujd2001 in your config you have:

Pir: {
  mode: 1,
  gpio: 21
//   gpio: 4 // <–connected to 4
}

Did you try with mode: 0 ?

Mode 1 uses an external python script and since that’s an external executable, there’s always a chance that the script has locked up the GPIO so when you start MMM-Pir again, it tries to start a new version of the script.

siujd2001

@redfishbluefish

Switching to mode:0 does now appear to work, in that there is no gpio error and ctrl-q and restarts don’t throw an error. So that’s great! Thank you.

Screen blanks but does not turn all the way off, so that’s still an issue.

redfishbluefish

@siujd2001 you hadn’t mentioned anything about screen.

I recently switched to using start:wayland also and found that in MMM-Pir, the ddcutil mode worked best. Screen control in general seems to vary on RPi depending on the monitor you have.

siujd2001

@redfishbluefish

Thank you. I will look at ddcutil mode next and update.