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    Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

    METADATA not saving - Favorites will never remain tagged

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    nespi casemetadata issuesfavoritesshutdown scriptgameslist.xml
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    • YahmezY
      Yahmez
      last edited by Yahmez

      If it just cuts power upon turning off the power switch it means that the on control pin is not going high on boot.

      cyperghostC 1 Reply Last reply Reply Quote 1
      • mituM
        mitu Global Moderator @cyperghost
        last edited by

        @cyperghost Python is a sneaky snake...

        1 Reply Last reply Reply Quote 1
        • cyperghostC
          cyperghost @Yahmez
          last edited by cyperghost

          @yahmez Can you test the script on your build, too?
          @mitu Python is very cool - indeed. But I also checked the way GPIOs are called. It's BCM mode. So Python GPIO = Bash GPIO

          YahmezY 1 Reply Last reply Reply Quote 0
          • YahmezY
            Yahmez @cyperghost
            last edited by

            @cyperghost I will give it a try this weekend if I can but I have relatives coming to stay so I'm not 100% sure I'll be able to till next week.

            cyperghostC 1 Reply Last reply Reply Quote 1
            • YahmezY
              Yahmez
              last edited by

              @Semper-5
              Can you try gpio readall to verify that the on control pin is high?

              1 Reply Last reply Reply Quote 0
              • cyperghostC
                cyperghost @Yahmez
                last edited by

                @yahmez No problem... I would be glad to hear your outfindings but take your time.

                YahmezY 1 Reply Last reply Reply Quote 0
                • YahmezY
                  Yahmez @cyperghost
                  last edited by

                  @cyperghost I am no coding guy. Does your BASH script enable the internal pullup on 25?

                  cyperghostC 1 Reply Last reply Reply Quote 0
                  • cyperghostC
                    cyperghost @Yahmez
                    last edited by

                    @yahmez No! I don't use wiringpi.... or raspi-gpio.

                    But would be possible with bash, too

                    raspi-gpio set $trigger_pin ip pu
                    echo "monitoring BCM $trigger_pin"
                    
                    pin_state() {
                        raspi-gpio get $trigger_pin | grep -c "level=0 fsel=0 func=INPUT"
                    }
                    
                    shutdown_trigger() {
                        if [ `pin_state` = 1 ]; then
                            echo "BCM $trigger_pin asserted low"
                    ....
                    
                    YahmezY 1 Reply Last reply Reply Quote 0
                    • YahmezY
                      Yahmez @cyperghost
                      last edited by

                      @cyperghost That is the problem then, at least part of it.

                      cyperghostC 1 Reply Last reply Reply Quote 0
                      • cyperghostC
                        cyperghost @Yahmez
                        last edited by

                        @yahmez afaik this should work without the pullup. As I said, I sadly have no POLOLU switch available. Is there no connection to ground from the POLOLU to the GPIO?

                        YahmezY 1 Reply Last reply Reply Quote 0
                        • S
                          Semper 5
                          last edited by Semper 5

                          sorry for the late reply. I'm trying to get out of work.
                          my GPIO config is exactly as configured in Yahmez's tutorial.
                          23 reset
                          24 power
                          25 power (ON)

                          my GPIO readall with cyperghost's script
                          but as we see here, its not looking very live.

                          just as a reminder, I can get Yahmez's to fire up with no problem - just to rule out the possibility of bad wiring and I did confirm that my wiring looked good to a few other people who are VERY familiar with this mod.

                          EDIT: SORRY I didn't run the gpio readall with the script running. GPIO 25 has a difference now

                          cyperghostC YahmezY 2 Replies Last reply Reply Quote 1
                          • YahmezY
                            Yahmez @cyperghost
                            last edited by Yahmez

                            @cyperghost No. It will absolutely not work without the pullup. There is a reason I put it in my script :p

                            1 Reply Last reply Reply Quote 1
                            • cyperghostC
                              cyperghost @Semper 5
                              last edited by cyperghost

                              @semper-5 Why is GPIO25 set low? Okay corrected now.
                              @Yahmez Okay, that's interesting.... but I think it's no problem to integrate the script into yours. So I would suggest to remove the GPIO init and just make a call to to PID detection/removal routine.

                              1 Reply Last reply Reply Quote 0
                              • YahmezY
                                Yahmez @Semper 5
                                last edited by

                                @semper-5 Looks like the script is not setting GPIO 25 high according to your GPIO readall

                                cyperghostC 1 Reply Last reply Reply Quote 0
                                • cyperghostC
                                  cyperghost @Yahmez
                                  last edited by cyperghost

                                  @Semper-5 Use sudo command for this

                                  echo "$GPIOpin2" > /sys/class/gpio/export
                                  echo "out" > /sys/class/gpio/gpio$GPIOpin2/direction
                                  echo "1" > /sys/class/gpio/gpio$GPIOpin2/value
                                  

                                  With GPIOpin2=25 it will be a self runner ;)

                                  @Yahmez Ah so you tried out without using the pullups? That's interesting. So I should investigate this ;) As I said: No POLOLU switch, no testing area.

                                  So I say thank you to both of you! You should integrate a small 3,3V regulator. Then it's no problem to generate this. So intead of

                                  python os.system("sudo shutdown -h now")

                                  hook to a stripped down script with sudo command

                                  # Detect PID or EMULATOR NAMES
                                  emucall="$(sed '4!d; s/\([\\"]\|[[:alnum:]_]\+=[^ ]* \)//g; s/[][(){}^$*.|+? ]/\\&/g' /dev/shm/runcommand.info)"
                                  espid="$(pgrep -f "/opt/retropie/supplementary/.*/emulationstation([^.]|$)")"
                                  
                                  # Handle calls and send TERM signal
                                  if [[ -n "$emucall" ]]; then
                                      emupid="$(pgrep -f "$emucall" | tr '\n' ' ')"
                                      pkill -P "$(echo $emupid | tr ' ' ',')"
                                      kill -9 "$emupid"
                                      sleep 4
                                  fi    
                                  
                                  if [[ -n "$espid" ]]; then
                                      touch /tmp/es-shutdown && chown pi:pi /tmp/es-shutdown
                                      kill "$espid"
                                      exit
                                  fi
                                  
                                  poweroff
                                  
                                  YahmezY 2 Replies Last reply Reply Quote 0
                                  • YahmezY
                                    Yahmez @cyperghost
                                    last edited by

                                    @cyperghost it's not just the Pololu, but the way everything is wired in the case, the existing switches plus the added parts to convert it for safe shutdown. The Pololu on it's own is straight forward. Pin 25 has a diode between it's self and the switch to protect it from the 5v. It's internal pullup pulls it high. When you hit the switch it connects to ground and pulls gpio 25 down, which the script detects and initiates the shutdown.

                                    cyperghostC 1 Reply Last reply Reply Quote 0
                                    • cyperghostC
                                      cyperghost @Yahmez
                                      last edited by cyperghost

                                      @Yahmez But what is the difference to connect a GPIO directly to ground (maybe over an external resistor) or to activate the internal ones? I see there no difference. Maybe you can explain, me?

                                      The internal pullup prevents from floating... yes.. but where is the difference?

                                      1 Reply Last reply Reply Quote 0
                                      • YahmezY
                                        Yahmez @cyperghost
                                        last edited by Yahmez

                                        @cyperghost Not sure what you mean about the 3.3v regulator but the pin needs a pull-up resistor to work. It can be a physical resistor added to the circuit from the pi's 3.3v rail or it can be the internal pullup. I used the internal pullup in my tutorial because it was cheaper and easier.

                                        You want the pin to be high by default, detect a low, then shutdown.

                                        If you can get the internal pullups working thru bash, it should all work. If you can not, than how about stripping out the shutdown part from my script and calling the bash to exit es and shutdown? Basically have the python handle the pins and the bash handle the exit and shutdown...

                                        cyperghostC 1 Reply Last reply Reply Quote 0
                                        • cyperghostC
                                          cyperghost @Yahmez
                                          last edited by cyperghost

                                          @yahmez Well a regulator would convert the 5.0V to 3.3V (just a few cents) are use the internal 3.3V rail... or strip down the script ... Already done here

                                          Thank you for your patience and helpfull explaination. So it would be nice that you would implent this in your scripts.
                                          It has to be excuted with sudo command

                                          YahmezY 1 Reply Last reply Reply Quote 0
                                          • YahmezY
                                            Yahmez @cyperghost
                                            last edited by

                                            @cyperghost no problem. Unfortunately, I do not have the knowledge to properly incorporate your script into mine. At best, it would be trial and error on my part. Perhaps @Semper-5 can tinker with it though.

                                            cyperghostC 1 Reply Last reply Reply Quote 0
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