import sensor, image, time, math
from pyb import UART
import json

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time = 2000)
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()

uart = UART(3,115200)   #定义串口3变量
def find_max(blobs):    #定义寻找色块面积最大的函数
    max_size=0
    for blob in blobs:
        if blob.pixels() > max_size:
            max_blob=blob
            max_size = blob.pixels()
    return max_blob
####################################
#
#此为颜色处理代码
#
###################################
#bytearray为可变序列的字节数组 返回一个新的字节数组（将数据转为16进制）
img_data = bytearray([0x2C,18,X_black_Sign,Y_black_Sign,X_black_relative_displacement,Y_black_relative_displacement,
                           X_red_Sign,Y_red_Sign,X_red_relative_displacement,Y_red_relative_displacement,X_yellow_Sign,
                           Y_yellow_Sign,X_yellow_relative_displacement,Y_yellow_relative_displacement,
                           L_black,L_red,L_yellow,0x5B])


uart.write(img_data)

请在这里粘贴代码