Ejemplo n.º 1
0
def init_PWM(_redPin = 23, _greenPin = 24, _bluePin = 25, _flashPin= 22, initDutyCycle = [100]*3, flashRate = 0): 
   global colorPins, colors, flashActive, flashPin 
 
   colorPins = [_redPin, _greenPin, _bluePin] #list for pins used in raspberry pi

   wiringpi2.wiringPiSetup() # Initialize using wiringPi pin numbering scheme   

   for dc in initDutyCycle: #Check for valid initial duty cycle
      if dc < 0 or dc > 255: return -1

   #Create intial PWM signals for input to LED strip
   for i in range(3):
      wiringpi2.softPwmCreate(colorPins[i], int(initDutyCycle[i]*100.0/255.0), 100)

   #Current RGB values of LED strip
   colors = list(initDutyCycle)

   #Create square wave for flashing beat
   flashPin = _flashPin
   wiringpi2.softToneCreate(flashPin)
   if flashRate != 0:
      wiringpi2.softToneWrite(flashPin, flashRate)
      flashActive = True
   else:
      wiringpi2.softToneStop(flashPin)
      flashActive = False

   #Use Colors.txt file to create list of preset color options
   readColorsFile()

   return 0
Ejemplo n.º 2
0
def setBPM(flashRate):
   global flashActive

   if flashRate != 0:
      if not flashActive:
         wiringpi2.softToneCreate(flashPin)
         flashActive = True
      wiringpi2.softToneWrite(flashPin, flashRate)

   else:
      if flashActive:
         wiringpi2.softToneStop(flashPin)
         flashActive = False