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  • 无线扩展模块无法正常使用进行图像信息传输,报错:-13,求助解决办法!



    • 请问,在使用WiFi扩展板时运行IDE里面的mjpeg_streamer_ap_2.py,能正常建立WiFi热点,但是电脑或其他移动端无法连接,浏览器也无法登陆8080端口,报错代码为-13,隔一段时间后变为-9,请问这是什么原因?应该如何解决才能实现WiFi模块的正常传输。
      运行结果截图如下:
      1_1608700334585_dac5e9fb-dc26-4a46-aa36-1a2955527e0b.jpg 0_1608700334582_6822ec15-5a7d-420c-826e-74e4655cdd66.PNG
      示例代码如下:

      import sensor, image, time, network, usocket, sys
      
      SSID ='OPENMV_AP'    # Network SSID
      KEY  ='1234567890'    # Network key (must be 10 chars)
      HOST = ''           # Use first available interface
      PORT = 8080         # Arbitrary non-privileged port
      
      # Reset sensor
      sensor.reset()
      # Set sensor settings
      sensor.set_contrast(1)
      sensor.set_brightness(1)
      sensor.set_saturation(1)
      sensor.set_gainceiling(16)
      sensor.set_framesize(sensor.QQVGA)
      sensor.set_pixformat(sensor.GRAYSCALE)
      
      # Init wlan module in AP mode.
      wlan = network.WINC(mode=network.WINC.MODE_AP)
      wlan.start_ap(SSID, key=KEY, security=wlan.WEP, channel=2)
      
      # You can block waiting for client to connect
      #print(wlan.wait_for_sta(10000))
      
      def start_streaming(s):
          print ('Waiting for connections..')
          client, addr = s.accept()
          # set client socket timeout to 2s
          client.settimeout(2.0)
          print ('Connected to ' + addr[0] + ':' + str(addr[1]))
      
          # Read request from client
          data = client.recv(1024)
          # Should parse client request here
      
          # Send multipart header
          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()
      
          # Start streaming images
          # NOTE: Disable IDE preview to increase streaming FPS.
          while (True):
              clock.tick() # Track elapsed milliseconds between snapshots().
              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)
              print(clock.fps())
      
      while (True):
          # Create server socket
          s = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM)
          try:
              # Bind and listen
              s.bind([HOST, PORT])
              s.listen(5)
      
              # Set server socket timeout
              # NOTE: Due to a WINC FW bug, the server socket must be closed and reopened if
              # the client disconnects. Use a timeout here to close and re-create the socket.
              s.settimeout(3)
              start_streaming(s)
          except OSError as e:
              s.close()
              print("socket error: ", e)
              #sys.print_exception(e)