为什么我现在一运行这串代码，openmv就亮白光呢？我已经将软件更新到了最新版。
import sensor, image, time
from pyb import UART
from pyb import LED #加入
import json #载入库 加入
import pyb
import math
def get_biggest_blob(b):
max_blob = 0
max_blob_nb = 0
for i in range(len(b)):
area = b[i].pixels()
if area > max_blob:
max_blob = area
max_blob_nb = i
return max_blob_nb
def modified_data(data):
data = int(data)
str_data = ''
if data < 10:
str_data = str_data + '000' + str(data)
elif data >= 10 and data < 100:
str_data = str_data + '00' + str(data)
elif data >=100 and data <1000:
str_data = str_data + '0' + str(data)
else:
str_data = str_data + str(data)
return str_data.encode('utf-8')
led1 = pyb.LED(1)
led2 = pyb.LED(2)
led3 = pyb.LED(3)
uart = UART(3, 115200)
led1.on()
led2.on()
led3.on()
sj=0
clock = time.clock()
x=20
# 白天
'''
green_threshold_l =(11, 69, -66, -11, -15, 54)
yellow_threshold =(35, 66, -11, 12, -4, 46) #黄色阈值
gray_threshold =(58, 88, -7, 23, -17, 6) #灰色阈值
red_threshold_r = (43, 62, 24, 88, 23, 69)
red_threshold_l = (6, 25, 0, 48, -18, 64)
#red_threshold = ((33, 74, 24, 80, -5, 73))#红色阈值
'''
# 夜晚
gray_threshold = (27, 92, -35, 26, -52, 5)
yellow_threshold =(56, 77, -4, 19, 7, 82) #黄色阈值
green_threshold_l =(30, 57, -36, -10, -35, 26) #灰色阈值
red_threshold_r = (28, 52, 43, 77, 15, 61)
red_threshold_l = (8, 35, -6, 56, -19, 29)
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QQVGA)
sensor.skip_frames(10)
sensor.set_auto_whitebal(False)
clock = time.clock()
while True:
t=1
clock.tick()
if uart.any():
sj = uart.read(1)
#sj = uart.read(uart.any()).decode().strip()
print("pp",sj,x)
while (sj==b'1'):
img = sensor.snapshot()
green_blobs_l=img.find_blobs([green_threshold_l])
gray_blobs=img.find_blobs([gray_threshold])
yellow_blobs=img.find_blobs([yellow_threshold])
if yellow_blobs:
ii = get_biggest_blob(yellow_blobs)