4. 串口接收数据，程序只执行一下子，openmv直接卡死，报错
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    • 串口接收数据，程序只执行一下子，openmv直接卡死，报错

    • I
       

      
import sensor, image, time
from pyb import UART

sensor.reset()                      # Reset and initialize the sensor.
sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE)
sensor.set_framesize(sensor.QVGA)   # Set frame size to QVGA (320x240)
sensor.skip_frames(time = 2000)     # Wait for settings take effect.
clock = time.clock()                # Create a clock object to track the FPS.

uart = UART(3, 115200)
a=0

while(True):
    clock.tick()                    # Update the FPS clock.
    img = sensor.snapshot()         # Take a picture and return the image.
    print(clock.fps())              # Note: OpenMV Cam runs about half as fast when connected
                                    # to the IDE. The FPS should increase once disconnected.
    #code = 'A'
    #print(code)
    #uart.write(code)    
    if uart.any():
        recieve = uart.readline().decode().strip()
        print(recieve)


    if recieve == 'L':
        print("We win.")
        a=a+1
        print(a)
        print("\n")
    
    else:
        print("No FOUND")

      0_1556526948034_fd6df678-69d5-4353-9c99-885090de2e0a-image.png

      0
    • I

      传递过来的数据是‘L\n’

      0

    • 你的代码不对，if recieve == 'L':应该在if uart.any():里面。

      import sensor, image, time
from pyb import UART

sensor.reset()                      # Reset and initialize the sensor.
sensor.set_pixformat(sensor.GRAYSCALE) # Set pixel format to RGB565 (or GRAYSCALE)
sensor.set_framesize(sensor.QVGA)   # Set frame size to QVGA (320x240)
sensor.skip_frames(time = 2000)     # Wait for settings take effect.
clock = time.clock()                # Create a clock object to track the FPS.

uart = UART(3, 115200)
a=0

while(True):
    clock.tick()                    # Update the FPS clock.
    img = sensor.snapshot()         # Take a picture and return the image.
    print(clock.fps())              # Note: OpenMV Cam runs about half as fast when connected
                                    # to the IDE. The FPS should increase once disconnected.
    #code = 'A'
    #print(code)
    #uart.write(code)    
    if uart.any():
        recieve = uart.readline().decode().strip()
        print(recieve)
        if recieve == 'L':
            print("We win.")
            a=a+1
            print(a)
            print("\n")
    
    else:
        print("No FOUND")
      0

    • 0_1556533757581_3e1952e7-4897-49b0-aa5e-7164df17d20b-image.png

      我用串口助手发送数据，没发现问题。

      0