OpenMv多个二维码识别后的值怎么回传给单片机？单个的值在 代码 数组 qrdata 中，那多个的呢？
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import sensor, image, time, lcd from pyb import UART,Timer,LED sensor.reset()#初始化摄像头 sensor.set_pixformat(sensor.RGB565)#设置彩图 sensor.set_framesize(sensor.QVGA)#设置图像像素为QVGA sensor.skip_frames(1)#里面如果是数字就是跳过几帧，如果是time=1000就是跳过1s的帧数 # 等待设置生效 "设置跳帧成功，如果卡摄像头将这句话注释" sensor.set_auto_gain(False)#关闭自动增益 sensor.set_auto_whitebal(False)#关闭白平衡 clock = time.clock()#记录帧率 lcd.init()#初始化LCE屏幕 uart = UART(3,115200,8,None,1)#初始化串口 #============================================================ LEDR = LED(1) LEDG = LED(2) LEDB = LED(3) data = []#一个列表 left_roi= [0,0,260,200]#设置了一个感兴趣区，如果框不住请调整 160宽度是最小的，但是不建议 ''' #交通灯的阈值（经过曝光处理）主要使用这个阈值 red_threshold_01 = (29, 100, 38, 96, 20, 63) green_threshold_01 = (29, 91, -96, -18, 19, 67) yellow_threshold_01 = (34, 100, -31, 42, 48, 84) ''' FlagOK = 0 colorFlag = 0 yellow_threshold_01 = (34, 100, -31, 42, 48, 84) green_threshold_01 = (29, 91, -96, -18, 19, 67) #=================================================================================================== #UART发送函数 def USART_Send(src,length): for i in range(length): uart.writechar(src[i]) #=================================================================================================== #二维码识别函数# def qrcode_check(srcbuf): global FlagOK if(FlagOK == 1): LEDB.on() time.sleep_ms(50) LEDB.off() # img.lens_corr(1.8) for qrcode in img.find_qrcodes(): print(qrcode) FlagOK = 0 qr_Tab = qrcode.payload() uart.writechar(0x55) uart.writechar(0x02) uart.writechar(0x92) uart.writechar(0x01) uart.writechar(len(qr_Tab)) for qrdata in qr_Tab: uart.writechar(ord(qrdata)) uart.writechar(0xBB) if(FlagOK == 2): FlagOK = 0 #=================================================================================================== #交通灯识别函数 def colorfind(srcbuf): global colorFlag if(colorFlag == 1):#================== LEDR.on() time.sleep_ms(50) LEDR.off() #看参数根据距离更改 ,x_stride =5,y_stride=5 增加识别的速度 软件复位：machine.reset() # pixels_threshold=30 最小的色块 # area_threshold=30 最小边界框区域 # merge=True 合并色块 # margin=2 合并的时候边界距离 yellow = img.find_blobs([yellow_threshold_01],roi=left_roi,x_stride =5,y_stride=5, pixels_threshold=30, area_threshold=30, merge=True, margin=2) green = img.find_blobs([green_threshold_01] ,roi=left_roi,x_stride =5,y_stride=5, pixels_threshold=30, area_threshold=30, merge=True, margin=2) if yellow: LEDB.off() LEDR.on() LEDG.on() LEDR.off() LEDG.off() uart.writechar(0x55) uart.writechar(0x0E) uart.writechar(0x02) uart.writechar(0x03) uart.writechar(0x00) uart.writechar(0x00) uart.writechar(0x05) uart.writechar(0xBB) print("发送黄色") colorFlag = 0 elif green: LEDB.off() LEDG.on() LEDG.off() uart.writechar(0x55) uart.writechar(0x0E) uart.writechar(0x02) uart.writechar(0x02) uart.writechar(0x00) uart.writechar(0x00) uart.writechar(0x04) uart.writechar(0xBB) print("发送绿色") colorFlag = 0 else : LEDR.on() LEDG.off() LEDB.off() uart.writechar(0x55) uart.writechar(0x0E) uart.writechar(0x02) uart.writechar(0x01) uart.writechar(0x00) uart.writechar(0x00) uart.writechar(0x03) uart.writechar(0xBB) print("发送红色") colorFlag = 0 if(colorFlag == 2): colorFlag = 0 #=================================================================================================== print("准备进入主循环") #55 02 92 01 00 00 00 BB 二维码识别串口协议 #55 02 91 01 00 00 00 BB 交通灯识别串口协议 #################################################################################################### while(True): # LEDB.on() img = sensor.snapshot()# 拍一张照片并返回图像。 #.lens_corr(1.8) #如果二维码识别不到把注释去掉 img.draw_rectangle( left_roi, color=(255,0,0)) if(uart.any()): print("收到串口发送的数据") data = uart.read(8) print(data) if(len(data) >= 8): if((data[0] == 0x55)&(data[1] == 0x02)& (data[2] == 0x92) & (data[7] == 0xBB)): if(data[3] == 0x01): if(FlagOK == 0): FlagOK = 1 print("开始识别二维码") sensor.set_auto_exposure(True)#这里设置自动曝光 if(data[3] == 0x02): print("停止QR识别") FlagOK = 2 #主循环函数 #################################################################################################### if((data[0] == 0x55)&(data[1] == 0x02)& (data[2] == 0x91) & (data[7] == 0xBB)): if(data[3] == 0x01): if(colorFlag == 0): colorFlag = 1 print("开始识别颜色") sensor.set_auto_exposure(False, 1000)#这里设置曝光时间 if(data[3] == 0x02): print("停止颜色识别") colorFlag = 2 #主循环函数 #=================================================================================================== lcd.display(img) qrcode_check(data) colorfind(data) #重点循环 #===================================================================================================
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img.find_qrcodes()是一个列表，里面有很多个二维码。你的现在的代码是：循环遍历每一个二维码，然后发送。