esp32-s2-kaluga-1板子，USB摄像头出错是怎么回事？

使用的是esp32-s2-kaluga-1板子，自己焊接了一个USB口到板上，使用了官方的教程“esp-iot-solutionexamplesusbhostusb_camera_lcd_display”,插入USB摄像头的时候，串口提示如下:

[17:49:02.142]收←◆[0;32mI (7451217) UVC_STREAM: line 353 HCD_PORT_EVENT_CONNECTION[0m

[0;32mI (7451217) UVC_STREAM: Resetting Port[0m



[17:49:02.206]收←◆[0;32mI (7451277) UVC_STREAM: Setting Port FIFO[0m

[0;32mI (7451277) UVC_STREAM: Getting Port Speed[0m

[0;32mI (7451277) UVC_STREAM: Port speed = 1[0m

[0;32mI (7451277) UVC_STREAM: USB Speed: full-speed[0m

D (7451277) UVC_STREAM: urb alloced[0m

[0;32mI (7451287) UVC_STREAM: Set Device Addr = 1[0m

D (7451287) UVC_STREAM: Got expected pipe_handle and event[0m

[0;32mI (7451297) UVC_STREAM: Set Device Addr Done[0m

D (7451297) UVC_STREAM: urb free[0m

D (7451307) UVC_STREAM: urb alloced[0m

[0;32mI (7451307) UVC_STREAM: Set Device Configuration = 1[0m

D (7451307) UVC_STREAM: Got expected pipe_handle and event[0m

[0;32mI (7451317) UVC_STREAM: Set Device Configuration Done[0m

D (7451327) UVC_STREAM: urb free[0m

D (7451327) UVC_STREAM: urb alloced[0m

[0;32mI (7451327) UVC_STREAM: SET_CUR Probe[0m

D (7451337) UVC_STREAM: Got expected pipe_handle and event[0m

[0;32mI (7451337) UVC_STREAM: SET_CUR Probe Done[0m

[0;32mI (7451347) UVC_STREAM: GET_CUR Probe[0m

D (7451347) UVC_STREAM: Got expected pipe_handle and event[0m

bmHint: 0201

bFormatIndex: 0

bFrameIndex: 0

dwFrameInterval: 400000

wKeyFrameRate: 3

wPFrameRate: 256

wCompQuality: 3

wCompWindowSize: 50688

wDelay: 0

dwMaxVideoFrameSize: 2047

dwMaxPayloadTransferSize: 1025

dwClockFrequency: 0

bmFramingInfo: 0

bPreferredVersion: 0

bMinVersion: 0

bMaxVersion: 0

bInterfaceNumber: 0

[0;32mI (7451387) UVC_STREAM: GET_CUR Probe Done, actual_num_bytes:64[0m

[0;32mI (7451387) UVC_STREAM: SET_CUR COMMIT[0m

D (7451397) UVC_STREAM: Got expected pipe_handle and event[0m

[0;32mI (7451397) UVC_STREAM: SET_CUR COMMIT Done[0m

D (7451407) UVC_STREAM: urb free[0m

D (7451407) UVC_STREAM: urb alloced[0m

[0;32mI (7451407) UVC_STREAM: Set Device Interface = 1, Alt = 1[0m

D (7451417) UVC_STREAM: Got expected pipe_handle and event[0m

[0;32mI (7451427) UVC_STREAM: Set Device Interface Done[0m

D (7451427) UVC_STREAM: urb free[0m

[0;32mI (7451427) UVC_STREAM: Sample processing task started[0m



[17:49:02.413]收←◆[0;32mI (7451487) UVC_STREAM: Camera Start Streaming[0m

D (7451487) UVC_STREAM: urb context update[0m

D (7451487) UVC_STREAM: urb context update[0m

D (7451487) UVC_STREAM: urb context update[0m

D (7451487) UVC_STREAM: urb context update[0m

[0;33mW (7451507) UVC_STREAM: line 657 Pipe: iso HCD_PIPE_EVENT_ERROR_OVERFLOW[0m



代码里设置的参数是320*240，对应的index为4，摄像头在linux下使用`lsusb -v`查看参数如下：

      VideoStreaming Interface Descriptor:

        bLength                            30

        bDescriptorType                    36

        bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)

        bFrameIndex                         4

        bmCapabilities                   0x00

          Still image unsupported

        wWidth                            320

        wHeight                           240

        dwMinBitRate                  3840000

        dwMaxBitRate                  3840000

        dwMaxVideoFrameBufferSize      153600

        dwDefaultFrameInterval         400000

        bFrameIntervalType                  1

        dwFrameInterval( 0)            400000



代码里使用的参数如下图：