@kidswong999 在 这个是什么问题，求助？？？？怎么解决？？？ 中说： 请提供全部的代码，可以运行的文本 import sensor, image, time from pyb import UART import json yellow_threshold = (35, 56, -6, 127, -1, 104) sensor.reset() sensor.set_pixformat(sensor.RGB565) sensor.set_framesize(sensor.QQVGA) sensor.skip_frames(10) sensor.set_auto_whitebal(False) clock = time.clock() 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 def tongxin(): img = sensor.snapshot() blobs = img.find_blobs([yellow_threshold]) if blobs: max_blob=find_max(blobs) print('sum :', len(blobs)) img.draw_rectangle(max_blob.rect()) img.draw_cross(max_blob.cx(), max_blob.cy()) output_str='2' return('you send:',output_str) uart.write(output_str) else: return('not found!') while(True): uart.write('2') #print(a) if uart.any(): b=uart.readline() print(b)