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  • uart = UART(1,115200)为什么不可以使用啊,我想不用uart3的引脚用uart1的引脚,求大佬解答,?



    • import sensor, image, time
      import json
      from pyb import UART
      # For color tracking to work really well you should ideally be in a very, very,
      # very, controlled enviroment where the lighting is constant...
      yellow_threshold   = ( 46,  100,  -68,   72,   58,   92)
      # You may need to tweak the above settings for tracking green things...
      # Select an area in the Framebuffer to copy the color settings.
      
      sensor.reset() # Initialize the camera sensor.
      sensor.set_pixformat(sensor.RGB565) # use RGB565.
      sensor.set_framesize(sensor.QQVGA) # use QQVGA for speed.
      sensor.skip_frames(10) # Let new settings take affect.
      sensor.set_auto_whitebal(False) # turn this off.
      clock = time.clock() # Tracks FPS.
      
      uart = UART(1,115200)
      
      while(True):
          clock.tick() # Track elapsed milliseconds between snapshots().
          img = sensor.snapshot() # Take a picture and return the image.
      
          blobs = img.find_blobs([yellow_threshold])
          if blobs:
              #print('sum : %d'% len(blobs))
              data=[]
              for b in blobs:
                  # Draw a rect around the blob.
                  img.draw_rectangle(b.rect()) # rect
                  img.draw_cross(b.cx(), b.cy()) # cx, cy
                  data.append((b.cx(),b.cy()))
      
              #{(1,22),(-3,33),(22222,0),(9999,12),(0,0)}
              data_out = json.dumps(set(data))
              uart.write(data_out +'\n')
              print('you send:',data_out)
          else:
              print("not found!")
      
      


    • 报错是:uart(1) doesn't ecist



    • 你使用的是什么硬件和什么固件?



    • 已解决,谢谢你的回复