请问一下,op和电脑连接运行时,当接受数据发生变化后,op直接和电脑断开连接是为什么?
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# MJPEG Streaming AP. # # 这个例子展示了如何在AccessPoint模式下进行MJPEG流式传输。 # Android上的Chrome,Firefox和MJpegViewer App已经过测试。 # 连接到OPENMV_AP并使用此URL:http://192.168.1.1:8080查看流。 import sensor, image, time, network, usocket, sys, math, ustruct from pyb import UART #from pid import PID uart = UART(3,115200,bits=8, parity=None, stop=1, timeout_char = 1000) GRAYSCALE_THRESHOLD = [(0, 64)] ROIS = [ # [ROI, weight] (0, 100, 160, 20, 0.7), (0, 050, 160, 20, 0.3), (0, 000, 160, 20, 0.4) ] weight_sum = 0 for r in ROIS: weight_sum += r[4] SSID ='OPENMV_AP' # Network SSID KEY ='1234567890' # wifi密码(必须为10字符) HOST = '' # 使用第一个可用的端口 PORT = 8080 # 任意非特权端口 sensor.reset() sensor.set_contrast(1) sensor.set_brightness(1) sensor.set_saturation(1) sensor.set_gainceiling(16) sensor.set_auto_gain(False) sensor.set_auto_whitebal(False) sensor.set_framesize(sensor.QQVGA) sensor.set_pixformat(sensor.GRAYSCALE) sensor.skip_frames(time = 2000) #sensor.set_vflip(True) #sensor.set_hmirror(True) wlan = network.WINC(mode=network.WINC.MODE_AP) wlan.start_ap(SSID, key=KEY, security=wlan.WEP, channel=2) def start_streaming(s): def sending_data(data): global uart; data = ustruct.pack("<bbb", x, 0x0d, 0x0a ) uart.write(data); print ('Waiting for connections..') client, addr = s.accept() # 将客户端套接字超时设置为2秒 client.settimeout(2.0) print ('Connected to ' + addr[0] + ':' + str(addr[1])) # 从客户端读取请求 data = client.recv(1024) # 应该在这里解析客户端请求 # 发送多部分head client.send("HTTP/1.1 200 OK\r\n" \ "Server: OpenMV\r\n" \ "Content-Type: multipart/x-mixed-replace;boundary=openmv\r\n" \ "Cache-Control: no-cache\r\n" \ "Pragma: no-cache\r\n\r\n") # FPS clock clock = time.clock() a=0 n=0 # 开始流媒体图像 #注:禁用IDE预览以增加流式FPS。 while (True): if uart.any(): a = uart.read(1) print(a[0]) if a[0]==0x00: img = sensor.snapshot().binary(GRAYSCALE_THRESHOLD).invert() cframe = img.compressed(quality=35) header = "\r\n--openmv\r\n" \ "Content-Type: image/jpeg\r\n"\ "Content-Length:"+str(cframe.size())+"\r\n\r\n" client.send(header) client.send(cframe) centroid_sum = 0 most_pixels = 5000 for r in ROIS: blobs = img.find_blobs(GRAYSCALE_THRESHOLD, roi=r[0:4], merge=True) if blobs: largest_blob = 0 for i in range(len(blobs)): if blobs[i].pixels() > most_pixels: most_pixels = blobs[i].pixels() largest_blob = i img.draw_rectangle(blobs[largest_blob].rect()) img.draw_cross(blobs[largest_blob].cx(), blobs[largest_blob].cy()) centroid_sum += blobs[largest_blob].cx() * r[4] center_pos = (centroid_sum / weight_sum) deflection_angle = 0 deflection_angle = -math.atan((center_pos-80)/60) deflection_angle = math.degrees(deflection_angle) x = int(deflection_angle) sending_data(x) print("Turn Angle: %d" % deflection_angle) if a[0]==0x01: img = sensor.snapshot() #sensor.set_pixformat(sensor.RGB565) cframe = img.compressed(quality=35) header = "\r\n--openmv\r\n" \ "Content-Type: image/jpeg\r\n"\ "Content-Length:"+str(cframe.size())+"\r\n\r\n" client.send(header) client.send(cframe) sensor.snapshot().save("singtown%s.jpg" % (n) ) n +=1 print(n) while (True): # 创建服务器套接字 s = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM) try: # Bind and listen s.bind([HOST, PORT]) s.listen(5) # 设置服务器套接字超时 # 注意:由于WINC FW bug,如果客户端断开连接,服务器套接字必须 # 关闭并重新打开。在这里使用超时关闭并重新创建套接字。 s.settimeout(3) start_streaming(s) except OSError as e: s.close() print("socket error: ", e) #sys.print_exception(e)
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应该是这块的问题
while (True):
clock.tick() # 跟踪snapshots()之间经过的毫秒数。
frame = sensor.snapshot()cframe = frame.compressed(quality=35) header = "\r\n--openmv\r\n" \ "Content-Type: image/jpeg\r\n"\ "Content-Length:"+str(cframe.size())+"\r\n\r\n" client.send(header) client.send(cframe) if uart.any(): a = uart.read(1) print(a[0]) if a[0]==0x01: sensor.snapshot().save("singtown%s.jpg" % (n) ) print(n)
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sensor.snapshot().save("singtown%s.jpg" % (n) )
应该是这个和wifi视频流传输部分有冲突
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是因为sd卡有问题