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hathach / tinyusb

An open source cross-platform USB stack for embedded system
https://www.tinyusb.org
MIT License
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USB Bus Reset when running the CDC_MSC example (only CDC is enabled) on STM32U585OIYxQ custom board #2665

Closed DavidSayada closed 3 weeks ago

DavidSayada commented 3 weeks ago

Operating System

Windows 10

Board

Custom Board

Firmware

This is a custom firmware (compiled using STM32CubeIDE, Version: 1.13.2, Build: 18220_20230914_1601 (UTC)), that I am sharing as a ZIP file. poc_tinyusb.zip

What happened ?

After the Firmware is flashed, when you connect the device to the Windows 10 host, each time the device seems enumerated, a USB bus reset is sent by the host.

How to reproduce ?

It is enough to compile and debug the firmware using STM32CubeIDE, and then connect the device to the host.

Debug Log as txt file (LOG/CFG_TUSB_DEBUG=2)

USBD Setup Received 80 06 00 01 00 00 40 00 Get Descriptor Device Queue EP 80 with 18 bytes ... USBD Xfer Complete on EP 80 with 18 bytes Queue EP 00 with 0 bytes ... USBD Xfer Complete on EP 00 with 0 bytes USBD Bus Reset : Full Speed

USBD Setup Received 00 05 0C 00 00 00 00 00 Set Address USBD Xfer Complete on EP 80 with 0 bytes

USBD Setup Received 80 06 00 01 00 00 12 00 Get Descriptor Device Queue EP 80 with 18 bytes ... USBD Xfer Complete on EP 80 with 18 bytes Queue EP 00 with 0 bytes ... USBD Xfer Complete on EP 00 with 0 bytes

USBD Setup Received 80 06 00 02 00 00 FF 00 Get Descriptor Configuration[0] Queue EP 80 with 64 bytes ... USBD Xfer Complete on EP 80 with 64 bytes Queue EP 80 with 11 bytes ... USBD Xfer Complete on EP 80 with 11 bytes Queue EP 00 with 0 bytes ... USBD Xfer Complete on EP 00 with 0 bytes

USBD Setup Received 80 06 03 03 09 04 FF 00 Get Descriptor String[3] Queue EP 80 with 34 bytes ... USBD Xfer Complete on EP 80 with 34 bytes Queue EP 00 with 0 bytes ... USBD Xfer Complete on EP 00 with 0 bytes

USBD Setup Received 80 06 00 03 00 00 FF 00 Get Descriptor String[0] Queue EP 80 with 4 bytes ... USBD Xfer Complete on EP 80 with 4 bytes Queue EP 00 with 0 bytes ... USBD Xfer Complete on EP 00 with 0 bytes

USBD Setup Received 80 06 02 03 09 04 FF 00 Get Descriptor String[2] Queue EP 80 with 30 bytes ... USBD Xfer Complete on EP 80 with 30 bytes Queue EP 00 with 0 bytes ... USBD Xfer Complete on EP 00 with 0 bytes

USBD Setup Received 80 06 00 06 00 00 0A 00 Get Descriptor Device Qualifier Stall EP0

USBD Setup Received 80 06 00 01 00 00 12 00 Get Descriptor Device Queue EP 80 with 18 bytes ... USBD Xfer Complete on EP 80 with 18 bytes Queue EP 00 with 0 bytes ... USBD Xfer Complete on EP 00 with 0 bytes

USBD Setup Received 80 06 00 03 00 00 FF 00 Get Descriptor String[0] Queue EP 80 witUSBD init on controller 0, Highspeed = 0 sizeof(usbd_device_t) = 45 sizeof(dcd_event_t) = 12 sizeof(tu_fifo_t) = 12 sizeof(tu_edpt_stream_t) = 24 CDC init guid, gsnpsid, ghwcfg1, ghwcfg2, ghwcfg3, ghwcfg4 0x00003000, 0x4F54330A, 0x00000000, 0x229ED520, 0x0200D1E8, 0x17F08030 Fullspeed PHY init USBD Bus Reset : Full Speed

Screenshots

No response

I have checked existing issues, dicussion and documentation

HiFiPhile commented 3 weeks ago

Please use stock (stm32u575-nucleo) example for testing, your setup has many external factors.

DavidSayada commented 3 weeks ago

Hi @HiFiPhile , thank you for your answer. I don't have such a board. Are there some logs I can add in the stack that may help you?

HiFiPhile commented 3 weeks ago

Stock BSP only use few peripherals so most custom board should be compatible. https://github.com/hathach/tinyusb/blob/master/hw/bsp/stm32u5/boards/stm32u575nucleo/board.h

Try increase freertos stack size, at the end tusb reinitialized itself probably after crash reset.

DavidSayada commented 3 weeks ago

Are you talking about using the hooks implemented in freertos_hook.c? If this is the case, when you say "increase freertos stack size", are you talking about the IDLE task?

DavidSayada commented 3 weeks ago

The USB Bus reset is not due to a crash, but because the GINTSTS_USBRST bit is set in the DWC2 gintsts register. For some reason the Host decides systematically to reset the USB bus after the enumeration is done.

HiFiPhile commented 3 weeks ago

increase freertos stack size", are you talking about the IDLE task?

Not the idle task, but USB task where TUSB is running.

The USB Bus reset is not due to a crash

I'm talking about


USBD init on controller 0, Highspeed = 0
sizeof(usbd_device_t) = 45
sizeof(dcd_event_t) = 12
sizeof(tu_fifo_t) = 12
sizeof(tu_edpt_stream_t) = 24
``
which came only from `tusb_init()` which should only be called once in MCU init. So you are facing a crashing issue or usage fault 
as they are printed twice.

Close as it's not a TUSB issue.