openmv和单片机机通讯的过程当中在串口当中输出的数据在PC显示正常,但是单片机接受不到,请问是有什么问题?
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import sensor, image, time, os, tf, pyb from pyb import UART import json 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.set_windowing((240, 240)) # Set 240x240 window. sensor.skip_frames(time=2000) # Let the camera adjust. net = "trained.tflite" labels = [line.rstrip('\n') for line in open("labels.txt")] clock = time.clock() uart1=UART(3,19200) while(True): clock.tick() img = sensor.snapshot() # default settings just do one detection... change them to search the image... for obj in tf.classify(net, img, min_scale=1.0, scale_mul=0.8, x_overlap=0.5, y_overlap=0.5): print("**********\nPredictions at [x=%d,y=%d,w=%d,h=%d]" % obj.rect()) img.draw_rectangle(obj.rect()) # This combines the labels and confidence values into a list of tuples list1=list(labels) list2=list(obj.output()) position=list2.index(max(list2)) print(list1[position]) output_str=json.dumps(list1[position]) #方式2 print(output_str) print(output_str[1:2]) print(hex(ord(output_str[1:2]))) data=bytearray(hex(ord(output_str[1:2]))) uart1.write(data) time.sleep_ms(2500)
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先确认接线。
然后用示波器看看OpenMV发送的数据对不对。
然后再单片机端,看看波特率,代码对不对。