Error HCD DWC: EP MPS (192) exceeds supported limit (128) and CONFIG_USB_HOST_HW_BUFFER_BIAS_* configs are not taken into account (AEGHB-962)

[zry98]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

v5.4

Espressif SoC revision.

ESP32-S3 (QFN56) (revision v0.2)

Operating System used.

Linux

How did you build your project?

Command line with idf.py

If you are using Windows, please specify command line type.

None

Development Kit.

ESP32-S3-DevKitC-1

Power Supply used.

USB

What is the expected behavior?

I expected the example usb_camera_mic_spk to be working.

What is the actual behavior?

While running the example usb_camera_mic_spk with a generic UAC adapter, I'm getting errors like HCD DWC: EP MPS (192) exceeds supported limit (128) and usb_stream/usb_host_helpers.c:355 (_usb_pipe_deinit):invalid args.

Looks like it's caused by the FIFO MPS limits, but seems they couldn't be changed by the one of the USB host hardware FIFO size biasing configs (I made a wrong issue on this in espressif/esp-idf).

Steps to reproduce.

configs set in the `usb_camera_mic_spk` example

#define ENABLE_UVC_CAMERA_FUNCTION        0        /* enable uvc function */
#define ENABLE_UAC_MIC_SPK_FUNCTION       1        /* enable uac mic+spk function */
#if (ENABLE_UVC_CAMERA_FUNCTION)
#define ENABLE_UVC_FRAME_RESOLUTION_ANY   1        /* Using any resolution found from the camera */
#define ENABLE_UVC_WIFI_XFER              0        /* transfer uvc frame to wifi http */
#endif
#if (ENABLE_UAC_MIC_SPK_FUNCTION)
#define ENABLE_UAC_MIC_SPK_LOOPBACK       0        /* transfer mic data to speaker */

Debug Logs.

Logs

I (645) USB_STREAM: Audio control interface = 0
I (646) USB_STREAM: Speaker feature unit = 9
I (646) USB_STREAM:     Support volume control, ch = 6
I (646) USB_STREAM:     Support mute control, ch = 1
I (646) USB_STREAM: Mic feature unit = 10
I (647) USB_STREAM:     Support volume control, ch = 1
I (647) USB_STREAM:     Support mute control, ch = 1
I (647) USB_STREAM: Speaker Interface found, interface = 1
I (647) USB_STREAM:     Endpoint(ISOC) Addr = 0x2, MPS = 192
I (648) USB_STREAM:     Speaker frequency control Not Support
I (648) USB_STREAM: Mic Interface found interface = 2
I (648) USB_STREAM:     Endpoint(ISOC) Addr = 0x82, MPS = 96
I (649) USB_STREAM:     Mic frequency control Not Support
I (649) USB_STREAM: ENUM Stage CHECK_FULL_CONFIG_DESC, Succeed
I (650) USB_STREAM: ENUM Stage SET_CONFIG, Succeed
I (651) uvc_mic_spk_demo: UAC MIC: get frame list size = 1, current = 0
I (652) uvc_mic_spk_demo:        [0] ch_num = 1, bit_resolution = 16, samples_frequence = 48000, samples_frequence_min = 0, samples_frequence_max = 0
I (652) uvc_mic_spk_demo: UAC MIC: use frame[0] ch_num = 1, bit_resolution = 16, samples_frequence = 48000
I (653) uvc_mic_spk_demo: UAC SPK: get frame list size = 1, current = 0
I (653) uvc_mic_spk_demo:        [0] ch_num = 2, bit_resolution = 16, samples_frequence = 48000, samples_frequence_min = 0, samples_frequence_max = 0
W (654) uvc_mic_spk_demo: UAC SPK: only support 1 channel in this example
I (654) uvc_mic_spk_demo: UAC SPK: use frame[0] ch_num = 2, bit_resolution = 16, samples_frequence = 48000
I (655) uvc_mic_spk_demo: Device connected
E (655) HCD DWC: EP MPS (192) exceeds supported limit (128)
E (655) USB_STREAM: /projects/espressif/esp-iot-solution/components/usb/usb_stream/usb_host_helpers.c:306 (_usb_pipe_init):pipe alloc failed
E (656) USB_STREAM: /projects/espressif/esp-iot-solution/components/usb/usb_stream/usb_stream.c:2739 (_usb_stream_handle_task):pipe init failed
I (657) USB_STREAM: usb stream task wait reset
W (1657) USB_STREAM: usb stream task recover, reason: stream error
I (1657) USB_STREAM: Resetting SPK pipe
I (1657) USB_STREAM: Set Device Interface = 1, Alt = 0
E (1663) USB_STREAM: /projects/espressif/esp-iot-solution/components/usb/usb_stream/usb_host_helpers.c:355 (_usb_pipe_deinit):invalid args
I (1664) USB_STREAM: Resetting MIC pipe
I (1664) USB_STREAM: Set Device Interface = 2, Alt = 0
E (1674) USB_STREAM: /projects/espressif/esp-iot-solution/components/usb/usb_stream/usb_host_helpers.c:355 (_usb_pipe_deinit):invalid args
I (1674) uvc_mic_spk_demo: Device disconnected

UAC adapter descriptor

*** Device descriptor ***
bcdUSB 1.10
bDeviceClass 0x0
bDeviceSubClass 0x0
bDeviceProtocol 0x0
bMaxPacketSize0 8
idVendor 0x0
idProduct 0x0
bNumConfigurations 1

*** Configuration descriptor ***
wTotalLength 218
bNumInterfaces 4
bConfigurationValue 1
        *** Interface descriptor ***
        bInterfaceNumber 0
        bAlternateSetting 0
        bNumEndpoints 0
        bInterfaceClass 0x1 (Audio)
        bInterfaceSubClass 0x1
        *** Audio control header descriptor ***
        bcdADC 0x100
        wTotalLength 71
        bInCollection 2
                Interface number[0] = 1
                Interface number[1] = 2
        *** Audio control input terminal descriptor ***
        bTerminalID 1
        wTerminalType 0x101
        bAssocTerminal 0
        bNrChannels 2
        wChannelConfig 0x0003
        *** Audio control feature unit descriptor ***
        bUnitID 9
        bSourceID 1
        bControlSize 1
        bmaControls[ch0] 0x1
        bmaControls[ch1] 0x2
        bmaControls[ch2] 0x2
        *** Audio control output terminal descriptor ***
        bTerminalID 3
        wTerminalType 0x301
        bAssocTerminal 0
        *** Audio control input terminal descriptor ***
        bTerminalID 2
        wTerminalType 0x201
        bAssocTerminal 0
        bNrChannels 1
        wChannelConfig 0x0001
        *** Audio control feature unit descriptor ***
        bUnitID 10
        bSourceID 2
        bControlSize 1
        bmaControls[ch0] 0x3
        bmaControls[ch1] 0x0
        *** Audio control output terminal descriptor ***
        bTerminalID 4
        wTerminalType 0x101
        bAssocTerminal 0
        *** Interface descriptor ***
        bInterfaceNumber 1
        bAlternateSetting 0
        bNumEndpoints 0
        bInterfaceClass 0x1 (Audio)
        bInterfaceSubClass 0x2
        *** Interface descriptor ***
        bInterfaceNumber 1
        bAlternateSetting 1
        bNumEndpoints 1
        bInterfaceClass 0x1 (Audio)
        bInterfaceSubClass 0x2
        *** Audio stream general descriptor ***
        bTerminalLink 1
        bDelay 1
        wFormatTag 1
        *** Audio control header descriptor ***
        bFormatType 1
        bNrChannels 2
        bSubframeSize 2
        bBitResolution 16
        bSamFreqType 1
        tSamFreq[0] 48000
                *** Endpoint descriptor ***
                bEndpointAddress 0x2    EP 2 OUT
                bmAttributes 0x9        ISOC
                wMaxPacketSize 192
                bInterval 1
        *** Interface descriptor ***
        bInterfaceNumber 2
        bAlternateSetting 0
        bNumEndpoints 0
        bInterfaceClass 0x1 (Audio)
        bInterfaceSubClass 0x2
        *** Interface descriptor ***
        bInterfaceNumber 2
        bAlternateSetting 1
        bNumEndpoints 1
        bInterfaceClass 0x1 (Audio)
        bInterfaceSubClass 0x2
        *** Audio stream general descriptor ***
        bTerminalLink 4
        bDelay 1
        wFormatTag 1
        *** Audio control header descriptor ***
        bFormatType 1
        bNrChannels 1
        bSubframeSize 2
        bBitResolution 16
        bSamFreqType 1
        tSamFreq[0] 48000
                *** Endpoint descriptor ***
                bEndpointAddress 0x82   EP 2 IN
                bmAttributes 0x9        ISOC
                wMaxPacketSize 96
                bInterval 1
        *** Interface descriptor ***
        bInterfaceNumber 3
        bAlternateSetting 0
        bNumEndpoints 1
        bInterfaceClass 0x3 (Unknown)
        bInterfaceSubClass 0x0
                *** Endpoint descriptor ***
                bEndpointAddress 0x81   EP 1 IN
                bmAttributes 0x3        INT
                wMaxPacketSize 8
                bInterval 1

More Information.

No response

[leeebo]

@zry98 If you connect only with an audio device, try this usb_host_uac example https://github.com/espressif/esp-iot-solution/tree/master/examples/usb/host/usb_audio_player, check if it still exceeds the limits

[lijunru-hub]

Please see esp-arduino-libs/ESP32_USB_Stream#4 (comment)