4. 怎么给arduino传16进制的数字1，2，3，4，5，，，，
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    • 怎么给arduino传16进制的数字1，2，3，4，5，，，，

    • E
       

      # Measure the distance
#
# This example shows off how to measure the distance through the size in imgage
# This example in particular looks for yellow pingpong ball.

import sensor, image, time
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   = (27, 61, 36, 127, -128, 127)
# You may need to tweak the above settings for tracking green things...
# Select an area in the Framebuffer to copy the color settings.
from pyb import UART
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, 9600)
K=640#the value should be measured

while(True):
    clock.tick() # Track elapsed milliseconds between snapshots().
    img = sensor.snapshot() # Take a picture and return the image.

    blobs = img.find_blobs([yellow_threshold])
    if len(blobs) == 1:
        # Draw a rect around the blob.
        b = blobs[0]
        img.draw_rectangle(b[0:4]) # rect
        img.draw_cross(b[5], b[6]) # cx, cy
        if 0<b[5]<160/3 and 0<b[6]<40:
            uart.write('0x01')
            #print(b[5],b[6])
        if b[5]<320/3 and b[6]<40:
            uart.write('2')
            #print(b[5],b[6])
        if 320/3<b[5]<160 and 0<b[6]<40:
            uart.write('3')
            #print(b[5],b[6])
        if 0<b[5]<160/3 and 40<b[6]<80:
            uart.write('4')
            #print(b[5],b[6])
        if 160/3<b[5]<320/3 and 40<b[6]<80:
            uart.write('5')
            #print(b[5],b[6])
        if 320/3<b[5]<160 and 40<b[6]<80:
            uart.write('6')
            #print(b[5],b[6])
        if 0<b[5]<160/3 and 80<b[6]<120:
            uart.write('7')
            #print(b[5],b[6])
        if 160/3<b[5]<320/3 and 80<b[6]<120:
            uart.write('8')
            #print(b[5],b[6])
        if 320/3<b[5]<160 and 80<b[6]<120:
            uart.write('9')
            #print(b[5],b[6])
    #print(clock.fps()) # Note: Your OpenMV Cam runs about half as fast while
    # connected to your computer. The FPS should increase once disconnected.

      怎么给arduino传16进制的数字1，2，3，4，5，，，，

      0

    • uart.write(bytes([1]))
      uart.write(bytes([2]))
      uart.write(bytes([3]))
      uart.write(bytes([4]))
      uart.write(bytes([5]))

      0