Userscript on Button / Toggle Audio Output

[Thilo-90]

Hi all,

i want to have a toggle function for the audio output.
I have the sound coming from USB Soundcard Speakers and i want to be able to switch to the standard headphone jack.

I found this Hack and now i am able to switch the audio output via
bash RPi-Jukebox-RFID/scripts/userscripts/switch_audio_output.sh

In the linked Hack thread it is mentioned, that the script is called via RFID, and button would be possible.

At the moment, i can only execute the script via the console command.
If i try it via Webapp /userScripts.php i get the following in my journalctl -f
Nov 22 11:40:05 raspberrypi lighttpd[2499]: sudo: /home/pi/RPi-Jukebox-RFID/scripts/userscripts/switch_audio_output.sh: command not found

I had a look in the RPi-Jukebox-RFID/settings/gpio_settings.ini and i can see the function calls. I could set up a button there, but what would be the function call?
I also looked at the components/gpio_control/function_calls.py but, since i am new to all this coding stuff, i have no idea how to implement a new function there which would run the command bash RPi-Jukebox-RFID/scripts/userscripts/switch_audio_output.sh

Could someone please help me to run the script via a button press?

[manajoe]

What I recall from my memory and briefly checked in the files on my testing RPi, I edited the following files and inserted these commands:

RPi-Jukebox-RFID/components/gpio_control/function_calls.py

    function_call("{command} -c=userscript2".format(command=playout_control),
            shell=True)

RPi-Jukebox-RFID/scripts/playout_controls.sh

            $PATHDATA/userscripts/switch_audio_output.sh
            ;;

RPi-Jukebox-RFID/scripts/rfid_trigger_play.sh

            $PATHDATA/userscripts/switch_audio_output.sh
            ;;

RPi-Jukebox-RFID/settings/rfid_trigger_play.conf

### USERSCRIPT2
USERSCRIPT2="CARD-ID"

No guarantee it works, I can't test at the moment because the GPIO in my testing RPi is broken :-(

[Thilo-90]

Thanks again for your help. I'll mark my comment as answer since it has the fixes on your code and the permissions addition (in case it is needed)

[Thilo-90]

Good Morning,

thanks for your input @manajoe. I adjusted a bit of your code (fuction_calls.py has a small error)
I think it is almost working.

add GPIO Button
sudo nano RPi-Jukebox-RFID/settings/gpio_settings.ini

  [JackToggle]
  enabled: True
  Type: Button
  Pin: 12
  pull_up: True
  hold_time: 0.3
  functionCall: functionCallJackToggle

add function
nano RPi-Jukebox-RFID/components/gpio_control/function_calls.py

    def functionCallJackToggle(self, *args):
        function_call("{command} -c=userscript2".format(command=self.playout_control), shell=True)

add script to called function
nano RPi-Jukebox-RFID/scripts/playout_controls.sh

    userscript2)
        # will toggle audio Jack / Speakers
        $PATHDATA/userscripts/switch_audio_output.sh
        ;;

in the journalctl -f i can see the attempt to execute the script, though permission denied

Nov 23 07:58:08 raspberrypi PhonieboxGPIOControl[553]: INFO:GPIODevices.simple_button:JackToggle: execute callback Nov 23 07:58:08 raspberrypi PhonieboxGPIOControl[553]: INFO:GPIODevices.simple_button:JackToggle: action Nov 23 07:58:08 raspberrypi PhonieboxGPIOControl[1950]: /home/pi/RPi-Jukebox-RFID/scripts/playout_controls.sh: line 1135: /home/pi/RPi-Jukebox-RFID/scripts/userscripts/switch_audio_output.sh: Permission denied

Any idea how to fix this? =/

EDIT:
I got it. Read a bit about permissions. not sure which command of those triggered it, but now it works.

~/RPi-Jukebox-RFID/scripts/userscripts $ chmod a+r switch_audio_output.sh
~/RPi-Jukebox-RFID/scripts/userscripts $ chmod a+x switch_audio_output.sh