help! buttons on picoreplayer88.1.0

[Andy Chen]

Above is my button wiring diagram. Is that ok? I install picoreplayer8.1.0, LMS and pcp-sbpdtcz on raspberry pie 4B. How do I write commands in user command #1? thank you!

[jd68]

You should write a shell script that sets the environment and defines the buttons for SqueezeButtonPi.

Write a text file with the following content (the last line defines the GPIOs for NEXT, PREV and PLAY):

#!/bin/sh

# start pigpiod daemon
pigpiod -t 0 -f -l -s 10

# wait for pigpiod to initialize - indicated by 'pigs t' exit code of zero
count=10 # approx time limit in seconds
while ! pigs t >/dev/null 2>&1 ; do
    if [ $((count--)) -le 0 ]; then
        printf "\npigpiod failed to initialize within time limit\n"
        exit 1 # or however you want to deal with failure
    fi
#    printf "\nWaiting for pigpiod to initialize\n"
    sleep 1
done
printf "\npigpiod is running\n"

# load uinput module - required to be able to send keystrokes
# then set the permission to group writable, so you don't need to run sbpd with root permissions
sudo modprobe uinput
sudo chmod g+w /dev/uinput

# issue the sbpd command
sbpd -d b,16,NEXT b,13,PLAY b,26,PREV

Name it "start-sbpd.sh" and save it in /home/tc/.

Ensure that the file survives a reboot by executing "pcp bu".

Add "/home/tc/start-sbpd.sh" in user command #1.

[Greg Erskine]

hi Andy Chen,

I would research your circuit a little further.

You would normally have resistors for each switch to limit current.

Also, circuits often have pullup/pulldown resistors. Some of the GPIO's have these resistors installed externally, most have internal pullup/pulldown resistors that can be set with software.

regards
Greg

[Andy Chen]

Thank you for your answers. I still can't follow the above script. Finally, I tried for a long time and finally entered it under SSH:
sudo killall pigpiod
sudo pigpiod -t 0 -f -l -s 10
sudo sbpd -d b,16,NEXT,1 b,13,PLAY,1 b,26,PREV,1

ok!

It doesn't work on the command line of the web. I don't know why? User command #1：/home/tc/start-sbpd. Sh
Every time you start up, you have to enter three commands in SSH. How can you add them to the startup item? thank you!

I'm sorry, the wiring diagram above is wrong. It's 1-33, 1-36 and 1-37 physical pins, with 3.3V。

[Paul Webster]

Assuming that you have the contents of the file set correctly - including using Unix line endings (not Windows or MAC version) and you have saved the file with the correct name and in the correct place ... then you should have
/home/tc/start-sbpd.sh
not
/home/tc/start-sbpd. Sh

You might need to do a
chmod +x start-sbpd.sh
from SSH and then
pcp bu

then reboot
pcp rb

[jd68]

As Paul mentioned, you need to ensure that the script is executable.

You can check the permissions of the script with "ls -l /home/tc/start-sbpd.sh". It should similar to this (important are the 'x'):

[email protected]:~$ ls -l /home/tc/start-sbpd.sh
total 8
-rwxr-xr-x    1 tc       staff         1301 Jan  4 14:48 start-sbpd.sh

You can test the script manually on the command line of your SSH session with '/home/tc/start-sbpd.sh'.

[Andy Chen]

Thank you very much for your help! These problems may be very simple in your eyes. I'm not familiar with Linux. These are very strange.

It still doesn't work according to the above settings. Is there something wrong?

[Paul Webster]

What happens if you run the script by hand from the ssh session?

[Andy Chen]

Connection established.
To escape to local shell, press 'Ctrl+Alt+]'.

WARNING! The remote SSH server rejected X11 forwarding request.
_ _____ ___ __
___ (_) ___/__ _______ / _ \/ /__ ___ _____ ____
/ _ \/ / /__/ _ \/ __/ -_) ___/ / _ `/ // / -_) __/
/ .__/_/\___/\___/_/ \__/_/ /_/\_,_/\_, /\__/_/
/_/ /___/

piCorePlayer = piCore + Squeezelite + Raspberry Pi

The software is provided "as is" without warranty of any kind,
either express or implied, including without limitation any implied
warranties of condition, uninterrupted use, merchantability,
fitness for a particular purpose, or non-infringement.
[email protected]:~$ /home/tc/start-sbpd.sh
-sh: /home/tc/start-sbpd.sh: not found
[email protected]:~$ sudo /home/tc/start-sbpd.sh
[email protected]:~$

[Paul Webster]

“Not found” implies a file permissions problem (given that the sudo worked).

ls -lrt *.sh

Also … try putting
/bin/sh
(With a space at the end)
at the start of your pCP User Command and reboot

[jd68]

Can you execute the following on the command line:

/bin/sh -x /home/tc/start-sbpd.sh

Maybe that helps to see what is "not found" (if it is a command in the script and not the script itself).

And also

ls -al /home/tc/

to check the permissions of the directory.