hwa.py 文件源码

def initOS():
    global backlight
    os.environ['SDL_FBDEV'] = '/dev/fb1'
    os.environ['SDL_MOUSEDEV'] = '/dev/input/touchscreen'
    os.environ['SDL_MOUSEDRV'] = 'TSLIB'
    os.environ['SDL_VIDEODRIVER'] = 'fbcon'

    GPIO.setwarnings(False)
    GPIO.setmode(GPIO.BCM)
    GPIO.setup(18, GPIO.OUT)
    backlight = GPIO.PWM(18, 1024)
    backlight.start(100)