GPIO1

[eslavko]

Hello...

I'm make test pod for some testing device. I use RPI and pigpiod. The problem is that I use all the pins including GPIO1. And now I face that pigpio library refuse to use that pin. Is it possible to override that?. I don't have any HAT, EEPROM or camera. So pin should be free. The limitation seems to be in library itself.

Thanks for any useful info.

[joan]

Start the daemon with the -x option, e.g. sudo pigpiod -x -1 will allow access to all GPIO.

http://abyz.me.uk/rpi/pigpio/pigpiod.html

[eslavko]

That's works. Thanks.

...now how to start daemon on reboot?

sudo systemctl enable pigpiod -x -1

doesn't work.

[knute]

You might try editing /lib/systemd/system/pigpiod.service.

[eslavko]

doesn't work. Seems that completely ignore the parameters.

[eslavko]

the file itself:

Code: Select all

[Unit]
Description=Daemon required to control GPIO pins via pigpio
[Service]
ExecStart=/usr/bin/pigpiod -x -1
ExecStop=/bin/systemctl kill pigpiod
Type=forking
[Install]
WantedBy=multi-user.target

[eslavko]

systemctl seems to skip all parameters when starting pigpiod!
seems to strange to be real but I try that on fresh install too and fail again.

at least adding

Code: Select all

@reboot              /usr/bin/pigpiod -x -1

to crontab works.

[eslavko]

You might try editing /lib/systemd/system/pigpiod.service.

As this doesn't work I just got crazy idea. I changed line
ExecStart=/usr/bin/pigpiod -x -1
with
ExecStart=/usr/bin/pigpiodgarbage -x -1

so giving wrong name here. And after rebot I have surprise. pigpiod is loaded! so that file is not correct one!

[knute]

Did you do a systemctl daemon-reload?

[eslavko]

ups.. NO

But still don't work.
Here is complete workflow:

sudo systemctl disable pigpiod.service
sudo systemctl stop pigpiod.service

sudo nano /lib/systemd/system/pigpiod.service
replace ExecStart=/usr/bin/pigpiod with
ExecStart=/usr/bin/pigpiodgarbage -x -1

sudo systemctl daemon-reload
sudo systemctl enable pigpiod.service
sudo systemctl start pigpiod.service

pigpiod is started!

[knute]

replace ExecStart=/usr/bin/pigpiod with
ExecStart=/usr/bin/pigpiodgarbage -x -1

Are you sure that pigpiod is in fact running when you called to start pigpiodgarbage?

[dickon]

If he stuck it in his crontab, I'm not at all surprised it is...

[eslavko]

I deleted it from crontab.

sudo systemctl disable pigpiod.service
sudo systemctl stop pigpiod.service

sudo nano /lib/systemd/system/pigpiod.service
replace ExecStart=/usr/bin/pigpiod with
ExecStart=/usr/bin/pigpiodgarbage -x -1
sudo systemctl daemon-reload

sudo reboot

after rebot there is no pigpiod task (looking with htop)
when I issue sudo systemctl start pigpiod.service
the pigpiod task appears but without -x -1 (but it shouldnt as pigpiodgarbage is called)