I2C.py 文件源码

def Start(self):
        #SCL
        #  ______
        #  |     |______
        #SDA
        #  ___
        #  |  |_________

        GPIO.setup(self.SDA, GPIO.OUT) #cnfigure SDA as output

        GPIO.output(self.SDA, GPIO.HIGH)
        GPIO.output(self.SCL, GPIO.HIGH)
        self.tick(1)
        GPIO.output(self.SDA, GPIO.LOW)
        self.tick(1)
        GPIO.output(self.SCL, GPIO.LOW)
        self.tick(2)