串口通信

[lemron]

我想将openmv的数据传输到串口助手上，参照教程，发送 hello world串口助手可以收到，但发送复杂的数据就都没有反应，这是为什么？

[kidswong999]

需要贴出来代码，才能知道

[lemron]

# Blob Detection and uart transport
import sensor, image, time
from pyb import UART
import json
# For color tracking to work really well you should ideally be in a very, very,
# very, controlled enviroment where the lighting is constant...
yellow_threshold   = (65, 100, -10, 6, 24, 51)
# You may need to tweak the above settings for tracking green things...
# Select an area in the Framebuffer to copy the color settings.

sensor.reset() # Initialize the camera sensor.
sensor.set_pixformat(sensor.RGB565) # use RGB565.
sensor.set_framesize(sensor.QQVGA) # use QQVGA for speed.
sensor.skip_frames(10) # Let new settings take affect.
sensor.set_auto_whitebal(False) # turn this off.
clock = time.clock() # Tracks FPS.

uart = UART(3, 115200)

while(True):
    img = sensor.snapshot() # Take a picture and return the image.

    blobs = img.find_blobs([yellow_threshold])
    if blobs:
        print('sum :', len(blobs))
        output_str = json.dumps(blobs)
        for b in blobs:
            # Draw a rect around the blob.
            img.draw_rectangle(b.rect()) # rect
            img.draw_cross(b.cx(), b.cy()) # cx, cy

        print('you send:',output_str)
        uart.write(output_str+'\n')
    else:
        print('not found!')

这个代码不能够显示

[lemron]

烧进去之后，摄像头就不往回传数了

[kidswong999]

看一下终端，是不是显示not found!