controller_rpi.py 文件源码

def get_spi(self):             
        spi = None

        try: 
            spi = spidev.SpiDev()
            bus = 0
            device = 0
            spi.open(bus, device)            
            spi.max_speed_hz = 10000000
            spi.mode = 0b00
            spi.lsbfirst = False

        except Exception as e:
            print(e)
            GPIO.cleanup()
            if spi:
                spi.close()
                spi = None

        return spi


    # https://www.raspberrypi.org/documentation/hardware/raspberrypi/spi/README.md
    # https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=19489