@kidswong999 好 我试试用uart


while(True):
        bus.recv(3, timeout=10000) # 首先发送长度 (16-bits).
        clock.tick()
        img = sensor.snapshot()
        codes = img.find_barcodes()
       
              
         K=a
           #---条形码扫描代码-------
if  K==1:
        for code in codes:
               img.draw_rectangle(code.rect())
               print_args = (barcode_name(code), code.payload(), (180 * code.rotation()) / math.pi, code.quality(), clock.fps())
              # print("Barcode %s, Payload \"%s\", rotation %f (degrees), quality %d, FPS %f" % print_args)
               QR = code.payload()
               print(QR)   #输出二维码内容