ButtonEncoder.py 文件源码

def eventBegin(self, callback, object=0, edge='BOTH'):
    # eventBegin(callback)
    # eventBegin(callback, object, edge)
    # ** callback: call function when Interrupt
    # ** object: set Interrupt pin: 1=Button, 2=Encoder  >> default: 0(all)
    # ** edge: set edge detection: RISING, FALLING, BOTH >> default: BOTH
    self.Callback=callback

    if object==0 and ((self.__SWtype==1 and self.__eventStatus&0x03!=0x00) or (self.__SWtype==2 and self.__eventStatus&0x0F!=0x00)):
      self.eventEnd(0)
    elif object==1 and self.__eventStatus&0x03!=0x00:
      self.eventEnd(1)
    elif object==2 and (self.__SWtype==2 and self.__eventStatus&0x0C!=0x00):
      self.eventEnd(2)

    if object==0 or object==1:
      if edge.upper().find('RISING')>=0:
        GPIO.add_event_detect(self.__PinSW, GPIO.RISING, callback=self.eventButton, bouncetime=40)
        self.__eventStatus|=0x01
      elif edge.upper().find('FALLING')>=0:
        GPIO.add_event_detect(self.__PinSW, GPIO.FALLING, callback=self.eventButton, bouncetime=40)
        self.__eventStatus|=0x02
      elif edge.upper().find('BOTH')>=0:
        GPIO.add_event_detect(self.__PinSW, GPIO.BOTH, callback=self.eventButton, bouncetime=40)
        self.__eventStatus|=0x03
    if (object==0 or object==2) and self.__SWtype==2:
      if edge.upper().find('RISING')>=0:
        GPIO.add_event_detect(self.__PinA , GPIO.RISING, callback=self.eventEncoder, bouncetime=20)
        self.__eventStatus|=0x04
      elif edge.upper().find('FALLING')>=0:
        GPIO.add_event_detect(self.__PinA , GPIO.FALLING, callback=self.eventEncoder, bouncetime=20)
        self.__eventStatus|=0x08
      elif edge.upper().find('BOTH')>=0:
        GPIO.add_event_detect(self.__PinA , GPIO.BOTH, callback=self.eventEncoder, bouncetime=20)
        self.__eventStatus|=0x0C