Shutdown/Restart Pushbutton

[stablgr]

[janui]

[stablgr]

Thanks Janui. I'll take a look at it this weekend and see where it leads me.

Best regards,
Gary

[andre_chang]

This way can realize the shutdown state, click the button to start it?

[BritishAndy]

Hi, I have been following your conversation, thank you for all the info, it is exactly what I am trying to achieve. Have you had any luck?
I downloaded the files and installed as per:

Set Up:
cp gpio-trigger@.service /etc/systemd/system
mkdir /etc/systemd-gpio
cp examples/shutdown /etc/systemd-gpio
systemctl reenable gpio-trigger@shutdown

I assume from gpio readall and the config file that this uses GPIO.5 which is pin 18, but shorting this to 5v (or 0v) doesn't seem to do anything.
Is there anything more I need to do apart from the 'setup' above?

My 'project' is to mount the Pi in a 19" rack and use it as part of a PA system to play interval music during shows, it works really well but no easy way to shut it down and I would like to stay headless, hence me trying to figure this out. I am hoping to add a couple of status LEDs too. I guess I could just use a small touchscreen, but I like the minimalist look.
I have very little experience and I am rattling through tutorials and documentation as fast as I can, but struggling with this.

Thanks, and great work so far.

Andrew.

[R101]

I have added dtoverlay=gpio-shutdown,gpio_pin=3 to the end of config.txt and found it works fine in 0.4.

I suspect that if I had the local browser enabled, it would not work, as pin=3 is used for the touch screen i2c bus. Could that be the problem?

[BritishAndy]

I have got this working.
I think the code works fine as described above but I was getting confused with the pin numbering. GPIO=5 in the 'shutdown' file seems to be GPIO.21 on physical pin 29.
If I set GPIO=24 in 'shutdown' then this refers to GPIO.5 on physical pin 18.

In short, it works well. I didn't change the command string as shutdown -h now worked fine as downloaded and any attempt to modify it seemed to stop things working so any advice on this appreciated.

So now I can put 2 buttons on my project, a pull-up switch on pin 18 marked SHUTDOWN and a short between pins 5&6 marked RESET.

Now to work out some LEDs