I have this project where I am making a sort of space ship command panel for use in the kindergarten I work in, where I aim to integrate a Raspberry Pi in the kids' play. I use buttons to execute various videos through VLC (cvlc) on a 10.1" display. One button starts a countdown, one starts a video of a space shuttle rocket taking off, etc. Now, the problem I am having is that if I do what kids do and press all of the buttons without any sort of patience or restraint, the whole system freezes up. So what I am looking for is a way to disable all my buttons while the chosen video is played. Does anyone have any pointers on how I could do that?
The python code I am working with right now looks like this:Please disregard the parts commented out, as those are leftovers from an old script I found online that I have adapted for my use case and which was based on the outdated omxplayer instead of vlc.
The python code I am working with right now looks like this:
Code:
import RPi.GPIO as GPIOimport osimport sysfrom subprocess import PopenGPIO.setmode(GPIO.BCM)GPIO.setup(22, GPIO.IN, pull_up_down=GPIO.PUD_UP)GPIO.setup(23, GPIO.IN, pull_up_down=GPIO.PUD_UP)GPIO.setup(24, GPIO.IN, pull_up_down=GPIO.PUD_UP)GPIO.setup(27, GPIO.IN, pull_up_down=GPIO.PUD_UP)movie1 = ("/home/user/planets/Countdown.mp4")movie2 = ("/home/user/planets/Take-Off.mp4")movie3 = ("/home/user/planets/Mars.mp4")movie4 = ("/home/user/planets/Galaxies.mp4")last_state1 = Truelast_state2 = Truelast_state3 = Truelast_state4 = Trueinput_state1 = Trueinput_state2 = Trueinput_state3 = Trueinput_state4 = True#quit_video = Trueplayer = Falsewhile True: #Read states of inputs input_state1 = GPIO.input(22) input_state2 = GPIO.input(23) input_state3 = GPIO.input(24) input_state4 = GPIO.input(27) #If GPIO(22) is shorted to Ground if input_state1 != last_state1: if (player and not input_state1): os.system('killall vlc') omxc = Popen(['cvlc', movie1]) player = True elif not input_state1: omxc = Popen(['cvlc', movie1]) player = True #If GPIO(23) is shorted to Ground if input_state2 != last_state2: if (player and not input_state2): os.system('killall vlc') omxc = Popen(['cvlc', movie2]) player = True elif not input_state2: omxc = Popen(['cvlc', movie2]) player = True #If GPIO(24) is shorted to Ground if input_state3 != last_state3: if (player and not input_state3): os.system('killall vlc') omxc = Popen(['cvlc', movie3]) player = True elif not input_state3: omxc = Popen(['cvlc', movie3]) player = True #If GPIO(27) is shorted to Ground if input_state4 != last_state4: if (player and not input_state4): os.system('killall vlc') omxc = Popen(['cvlc', movie4]) player = True elif not input_state4: omxc = Popen(['cvlc', movie4]) player = True #If omxplayer is running and GIOP(17) and GPIO(18) are not shorted to Ground# elif (player and input_state1 and input_state2):# os.system('killall omxplayer.bin')# player = False# #GPIO(24) to close omxplayer manually - used during debug# if quit_video == False:# os.system('killall vlc.bin')# player = False #Set last_input states last_state1 = input_state1 last_state2 = input_state2 last_state3 = input_state3 last_state4 = input_state4Statistics: Posted by stian — Thu Sep 26, 2024 10:27 pm