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  • utime报错'module' object has no attribute 'sleep_ms'如何解决?



    • 
      

      红外RGB565跟踪示例

      这个例子展示了使用OpenMV Cam进行红外RGB565跟踪。

      import sensor, image
      #import time

      from pyb import UART

      import utime

      import pyb

      thresholds = (100,100,0,0,0,0) # thresholds for bright white light from IR.

      sensor.reset()

      sensor.set_pixformat(sensor.RGB565)

      sensor.set_framesize(sensor.VGA)

      sensor.set_windowing((240,240)) # 240x240 center pixels of VGA

      sensor.skip_frames(time = 10)

      sensor.set_auto_gain(False) # must be turned off for color tracking

      sensor.set_auto_whitebal(False) # must be turned off for color tracking

      clock = time.clock() # Tracks FPS.

      uart = UART(3, 115200)

      def find_max(blobs):
      max_size=0
      for blob in blobs:
      if blob.pixels() >max_size:
      max_blob=blob

      max_size = blob.pixels()

      return max_blob

      while(True):

      time.sleep_ms(50)

      #clock.tick()
      #for i in range(0,600):
       # clock.tick()# Track elapsed milliseconds between snapshots().
      start = time.ticks_ms()
      #time_start = pyb.millis()
      
      
      img = sensor.snapshot()#binary([thresholds], invert=True, zero=True)
      
      blobs=img.find_blobs([thresholds],pixels_threshold=200,area_threshold=250)
      
      if blobs:
      
        output_str = json.dumps(blobs)
      
        max_blob=find_max(blobs)
      
        img.draw_rectangle(max_blob.rect(),color=(255,0,0))
      
        output_str="[%d,%d]" % (max_blob.cx(),max_blob.cy())
      
        print('you send:',output_str)
      
        uart.write(output_str+'\n')
      
        print(clock.fps())
      
        delta = time.ticks_diff(time.ticks_ms(), start)
        #duration = pyb.elapsed_millis(time_start)
        print('a',delta)
        print("FPS:", clock.fps())
      
              #img.draw_cross(blob.cx(), blob.cy())
      else:
      
                  print('not found!')
      
      
      


    • 改成time.sleep()



    • 在delta = time.ticks_diff(time.ticks_ms(), start)报错,'module' object has no attribute 'ticks_diff'



    • delta = utime.ticks_diff(utime.ticks_ms(), start)