串口通信。用串口助手发送hex和utf8的1 都不行

k1o5

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

thresholds = [(-5,50, 20, 80, 0, 60), # generic_red红_thresholds
(10, 80, -50, -20, 0, 40), # generic_green绿_thresholds
(15,75, -40, 35, -60, 0)] # generic_blue蓝_thresholds
uart = UART(3, 9600)

ledR= pyb.LED(1)
ledG= pyb.LED(2)
ledB= pyb.LED(3)
led= pyb.LED(1) # Red LED = 1, Green LED = 2, Blue LED = 3, IR LEDs = 4.

def R():
ledR.on() #亮灯
time.sleep(1000) #延时150ms
ledR.off() #暗灯
time.sleep(500)
def B():
ledB.on() #亮灯
time.sleep(1000) #延时150ms
ledB.off() #暗灯
time.sleep(500)
def G():
ledG.on() #亮灯
time.sleep(1000) #延时150ms
ledG.off() #暗灯
time.sleep(500)

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()

def twoley():
while(True):
clock.tick()
img = sensor.snapshot()
for code in img.find_qrcodes():
img.draw_rectangle(code.rect(), color =(255,0,0))
message =code.payload()
a_er=int(message)
uart.write(message)
print(message)
if a_er==123:
while(True):
R()
G()
B()
print(a_er)

        elif a_er==132:
            while(True):
                R()
                B()
                G()
                print(a_er)

        elif a_er==213:
            while(True):
                G()
                R()
                B()
                print(a_er)
        elif a_er==231:
            while(True):
                G()
                B()
                R()
                print(a_er)

        elif a_er==312:
            while(True):
                B()
                R()
                G()
                print(a_er)
        elif a_er==321:
            while(True):
                B()
                G()
                R()
                print(a_er)

def yanshe():
while(True):
clock.tick()
img = sensor.snapshot()
for blob in img.find_blobs([thresholds[0]], pixels_threshold=200, area_threshold=200):
img.draw_rectangle(blob.rect())
img.draw_cross(blob.cx(), blob.cy())
a=blob.cx()
for blob in img.find_blobs([thresholds[1]], pixels_threshold=200, area_threshold=200):
img.draw_rectangle(blob.rect())
img.draw_cross(blob.cx(), blob.cy())
b=blob.cx()
for blob in img.find_blobs([thresholds[2]], pixels_threshold=200, area_threshold=200):
img.draw_rectangle(blob.rect())
img.draw_cross(blob.cx(), blob.cy())
c=blob.cx()
time.sleep(500)
if a<b :
if a<c :
if b<c :
a_yanse='123'
else :
a_yanse='132'
else :
a_yanse='312'
else :
if b<c :
if a<c :
a_yanse='213'
else :
a_yanse='231'
else :
a_yanse='321'

            print(a_yanse)
            uart.write(a_yanse[0])
            time.sleep(1000)
            uart.write(a_yanse[1])
            time.sleep(1000)
            uart.write(a_yanse[2])
            time.sleep(1000)

while(True):

  if uart.any():  uart.readchar()
  flag=uart.read()

if flag=='1':
twoley()

elif flag=='0':
yanshe()

kidswong999

什么叫做不行，请说具体的现象

k1o5

运行之后一段时间之后画面就定格了，用串口助手发送0 和1 都不工作。 openmv也一直在工作

kidswong999

所以你的问题是如何使用串口接收数据？

k1o5

是的。还有接受的数据类型是什么

kidswong999

串口的问题，一两句话说不清。

等过两天串口接受的视频上传上去。

k1o5

好吧。谢谢

串口通信。 用串口助手发送hex和utf8的1 都不行

串口通信。用串口助手发送hex和utf8的1 都不行