Unable to keep capture image base on Wifi-img-streamer

[jobsZhao99]

Hi, I'm a beginner at ai-deck.
I want to use the Wifi-img-streamer demo to send some image characteristics to my computer rather than a row/JPEG image.

However, the problem comes when I comment on transferring things(PS. I also change the python code corresponding to receiving the image packet). The camera could only work for the first frame after the program entered the while loop, and will clog at this line:pi_camera_capture_async(&camera, imgBuff, resolution, pi_task_callback(&task1, capture_done_cb, NULL));

I guess it might be because the buffer needs to be refreshed or reset before reuse. Whereas I have no idea how to reset it.

Anyone could please help me with this issue? Very appreciate!

 while (1)
  {
    if (wifiClientConnected == 1)
    {
      start = xTaskGetTickCount();

      pi_camera_capture_async(&camera, imgBuff, resolution, pi_task_callback(&task1, capture_done_cb, NULL));
      
      pi_camera_control(&camera, PI_CAMERA_CMD_START, 0);
      cpxPrintToConsole(LOG_TO_CRTP, "01\n");
      xEventGroupWaitBits(evGroup, CAPTURE_DONE_BIT, pdTRUE, pdFALSE, (TickType_t)portMAX_DELAY);
      cpxPrintToConsole(LOG_TO_CRTP, "02\n");
      pi_camera_control(&camera, PI_CAMERA_CMD_STOP, 0);
      captureTime = xTaskGetTickCount() - start;

      imgSize = captureSize;


      // First send information about the image
      createImageHeaderPacket(&txp, imgSize, RAW_ENCODING);
      
      cpxSendPacketBlocking(&txp);


      start = xTaskGetTickCount();

      pi_camera_capture_async(&camera, imgBuff, resolution, pi_task_callback(&task1, capture_done_cb, NULL));
      
      pi_camera_control(&camera, PI_CAMERA_CMD_START, 0);
      xEventGroupWaitBits(evGroup, CAPTURE_DONE_BIT, pdTRUE, pdFALSE, (TickType_t)portMAX_DELAY);
      pi_camera_control(&camera, PI_CAMERA_CMD_STOP, 0);
      captureTime = xTaskGetTickCount() - start;

      imgSize = captureSize;


      // First send information about the image
      createImageHeaderPacket(&txp, imgSize, RAW_ENCODING);
      
      cpxSendPacketBlocking(&txp);


      // start = xTaskGetTickCount();
      
      // Send image
      // sendBufferViaCPX(&txp, imgBuff, imgSize);
      // transferTime = xTaskGetTickCount() - start;

[evoggy]

Hi,

Are you emptying the buffer (i.e downloading the data) on the client side? CPX will block when sending if the buffer is ful, so if you're not emptying it fast enough it block pause.