1. import RPi.GPIO as GPIO
  2. import threading
  3. import subprocess
  5. GPIO.setmode(GPIO.BOARD)
  6. GPIO.setwarnings(False)
  8. pins = [ ['prev', 13], ['pause', 12], ['next', 11] ]
  9. threads = []
  11. for i in pins:
  12. GPIO.setup(i, GPIO.IN, pull_up_down=GPIO.PUD_UP)
  14. def mpcctl(fn):
  15. cmd = [ 'mpc', '-h', '192.168.0.2' ]
  16. if fn == 'prev' or fn == 'next':
  17. arg = str(fn)
  18. elif fn == 'pause':
  19. if 'playing' in subprocess.check_output(cmd.split()):
  20. arg = 'pause'
  21. elif 'paused' in subprocess.check_output(cmd.split()):
  22. arg += 'play'
  23. cmd.append(arg)
  24. subprocess.call(cmd)
  26. def pinchk(pin):
  27. while true:
  28. GPIO.wait_for_edge(int(pin[1]), GPIO.FALLING)
  29. #mpcctl(str(pin[0]))
  30. # test:
  31. print('pin',pin,'has fallen')
  33. for i in range(3):
  34. threads.append(threading.Thread(name=' '.join(pins[i]), target=pinchk, args=(pins[i])))
  35. threads[i].start()