103 lines
2.3 KiB
Python
Executable File
103 lines
2.3 KiB
Python
Executable File
#!/usr/bin/python
|
|
|
|
import glob
|
|
import os
|
|
import subprocess
|
|
import ConfigParser
|
|
|
|
import RPi.GPIO as GPIO
|
|
|
|
yellowLed = 15
|
|
redLed = 17
|
|
greenLed = 18
|
|
|
|
buttonPin = 27
|
|
dummyPin = 1
|
|
|
|
mopidyConf = '/etc/mopidy/mopidy.conf'
|
|
userDir = '/etc/mopidy/conf.user/'
|
|
|
|
def setLeds(yellow, red, green):
|
|
GPIO.output(yellowLed, yellow)
|
|
GPIO.output(redLed, red)
|
|
GPIO.output(greenLed, green)
|
|
|
|
def getConfiguredLedColor():
|
|
config = ConfigParser.ConfigParser()
|
|
config.read(mopidyConf)
|
|
|
|
return config.get('moped-switcher', 'led')
|
|
|
|
def setConfiguredLedColor():
|
|
ledColor = getConfiguredLedColor()
|
|
|
|
if ledColor == 'yellow':
|
|
setLeds(1, 0, 0)
|
|
elif ledColor == 'red':
|
|
setLeds(0, 1, 0)
|
|
elif ledColor == 'green':
|
|
setLeds(0, 0, 1)
|
|
|
|
def stopMopidy():
|
|
command = ['service', 'mopidy', 'stop']
|
|
subprocess.call(command, shell=False)
|
|
|
|
def startMopidy():
|
|
command = ['service', 'mopidy', 'start']
|
|
subprocess.call(command, shell=False)
|
|
|
|
def getConfigs():
|
|
return sorted(glob.glob(os.path.join(userDir, '*.conf')))
|
|
|
|
def getCurrentConfig():
|
|
if os.path.islink(mopidyConf):
|
|
return os.path.realpath(mopidyConf)
|
|
else:
|
|
return None
|
|
|
|
def getNextConfig():
|
|
currentConfig = getCurrentConfig()
|
|
availableConfigs = getConfigs()
|
|
currentIndex = availableConfigs.index(currentConfig)
|
|
nextIndex = (currentIndex + 1) % len(availableConfigs)
|
|
return availableConfigs[nextIndex]
|
|
|
|
def setConfig(newConfig):
|
|
if os.path.islink(mopidyConf) and os.path.isfile(newConfig):
|
|
os.unlink(mopidyConf)
|
|
os.symlink(newConfig, mopidyConf)
|
|
|
|
def switchConfig():
|
|
setConfig(getNextConfig())
|
|
|
|
def buttonHandler(channel):
|
|
print 'Switching to ' + getNextConfig()
|
|
try:
|
|
setLeds(0, 0, 0)
|
|
stopMopidy()
|
|
switchConfig()
|
|
startMopidy()
|
|
setConfiguredLedColor()
|
|
except OSError as e:
|
|
print 'Error: ' + e.strerror
|
|
|
|
if __name__ == '__main__':
|
|
GPIO.setmode(GPIO.BCM)
|
|
|
|
GPIO.setup(yellowLed, GPIO.OUT)
|
|
GPIO.setup(redLed, GPIO.OUT)
|
|
GPIO.setup(greenLed, GPIO.OUT)
|
|
|
|
GPIO.setup(buttonPin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
|
|
GPIO.setup(dummyPin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
|
|
|
|
GPIO.add_event_detect(buttonPin, GPIO.FALLING, callback=buttonHandler, bouncetime=1000)
|
|
|
|
setConfiguredLedColor()
|
|
|
|
try:
|
|
while True:
|
|
GPIO.wait_for_edge(dummyPin, GPIO.RISING)
|
|
finally:
|
|
GPIO.cleanup()
|