mcp3008.py 文件源码

def __init__(self, data):
        GPIO.setmode(GPIO.BCM)
        GPIO.setwarnings(False)
        self.SPIMOSI = 23
        self.SPIMISO = 24
        self.SPICLK = 18
        self.SPICS = 25
        if "mosiPin" in data:
            self.SPIMOSI = data["mosiPin"]
        if "misoPin" in data:
            self.SPIMISO = data["misoPin"]
        if "clkPin" in data:
            self.SPICLK = data["clkPin"]
        if "csPin" in data:
            self.SPICS = data["csPin"] 
        GPIO.setup(self.SPIMOSI, GPIO.OUT)
        GPIO.setup(self.SPIMISO, GPIO.IN)
        GPIO.setup(self.SPICLK, GPIO.OUT)
        GPIO.setup(self.SPICS, GPIO.OUT)
        if MCP3008.sharedClass == None:
            MCP3008.sharedClass = self

    #read SPI data from MCP3008 chip, 8 possible adc's (0 thru 7)