4. 为什么串口接收数据一段好的一段又隔开了正常是0.774536？
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    • 为什么串口接收数据一段好的一段又隔开了正常是0.774536？

    • X

      0_1697880107752_1.png

      thresholds = [(0, 100, 8, 123, -3, 127), #red
              (9, 96, -128, 111, -81, -17), #blue
              (0, 97, -127, -15, 127, -128)] #green
import ustruct,sensor,image,time
from machine import UART
from pyb import Servo

#time.sleep(17)
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QQVGA)
sensor.skip_frames(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

#初始化串口
uart = UART(1, 115200)   #串口1发送到单片机串口4
uart.init(115200, bits=8, parity=None, stop=1)

#端口定义
s1 = Servo(1) # servo on position 1 (P7)
s2 = Servo(2) # servo on position 1 (P8)

#函数初始化
chucun = 0
zhuangtaiji = 0
zhuangtaiji2 = 0
zhuangtaiji3 = 0
a = 0
b = 0
s2.angle(-90)
time.sleep(1)
s1.angle(-90) # move to 45 degrees
time.sleep(1)

while(True):
 img = sensor.snapshot()
 flag = 0
 for blob in img.find_blobs(thresholds,x_stride=80,y_stride=80,pixels_threshold=32500,area_threshold=30000, merge = False):
    if int(blob.code()) == 1:
     img.draw_string(10,10,"red",color=(255,0,0),scale = 2)
     flag = 1

    if int(blob.code()) == 2:
     img.draw_string(10,10,"blue",color=(0,0,255),scale = 2)
     flag = 2

    if int(blob.code()) == 4:
     img.draw_string(10,10,"green",color=(0,255,0),scale = 2)
     flag = 4
    img.draw_rectangle(blob.rect())
 if uart.any():
     a = uart.readline().decode().strip()
#     re.match chucun:
#     case 0:
 if(flag == 0 and zhuangtaiji2 == 1):
    zhuangtaiji = 1
 if(flag == 1 or flag == 2 or flag == 4):
    if(chucun == 0):
        chucun = flag
        zhuangtaiji2 = 1
    if(chucun == flag and zhuangtaiji == 1 and zhuangtaiji3 == 0):
        uart.write((ustruct.pack("<BBBB",0X5C,0X5A,flag,0x5B)))
        uart.write((ustruct.pack("<BBBB",0X5C,0X5A,flag,0x5B)))
        uart.write((ustruct.pack("<BBBB",0X5C,0X5A,flag,0x5B)))
        uart.write((ustruct.pack("<BBBB",0X5C,0X5A,flag,0x5B)))
        time.sleep(0.5)
        s1.angle(90)
        time.sleep(1)
        s1.angle(-90)
        time.sleep(1)
        zhuangtaiji3 =0
 print (float(a))

      0_1697880119891_2.png

      0

    • uart.init(115200, bits=8, parity=None, stop=1)

      改为

      uart.init(115200, bits=8, parity=None, stop=1, timeout_char=1000)

      0