STM32H7 nucleo USB FS CDC

[embvis]

Posted on November 09, 2017 at 10:37

Hi,

I am trying to start with USB CDC on stm32h7. I create new project with CubeMx + STM32Cube_FW_H7_V1.1.0 (cubemx file attached). After compile usb device doesnt appear on the system.

Regards

Mike

#stm32h743 #virtual-comport-stm32 #cdc #stm32h7 #usb-device #usb-fs-cdc

[Marina Brener · Accepted solution]

Posted on November 09, 2017 at 16:12

Hi Mikolaj,

I had the same problem, this function solved it : 

HAL_PWREx_EnableUSBVoltageDetector() .

Please add this function call to usb_device.c file like this.

void MX_USB_DEVICE_Init(void)

{ /* USER CODE BEGIN USB_DEVICE_Init_PreTreatment */ /* USER CODE END USB_DEVICE_Init_PreTreatment */ /* Init Device Library,Add Supported Class and Start the library*/ USBD_Init(&hUsbDeviceFS, &FS_Desc, DEVICE_FS);

USBD_RegisterClass(&hUsbDeviceFS, &USBD_CDC);

USBD_CDC_RegisterInterface(&hUsbDeviceFS, &USBD_Interface_fops_FS);

USBD_Start(&hUsbDeviceFS);

/* USER CODE BEGIN USB_DEVICE_Init_PostTreatment */

HAL_PWREx_EnableUSBVoltageDetector(); /* USER CODE END USB_DEVICE_Init_PostTreatment */}

Hope it helps!

Marina

[embvis]

Posted on November 12, 2017 at 02:34

Its now workingk. Thank you Marina.

[Imen.D]

Posted on November 16, 2017 at 15:40

Hello,

Thank you to share this issue. I raised it internally to the appropriate team for work and fix it.

Best Regards

Imen

[Andrew Ivanov]

Posted on November 29, 2017 at 08:34

May be you know how to resolve, I worked with nucleo144 board (stm32f767) and I had some problem. Windows define board how unkown usb device. But Keil debuger stopped in irq handler 'void OTG_FS_IRQHandler(void)'. May be I dont`t initialize any option.

[Andrei Chichak]

Posted on December 11, 2017 at 18:38

I'm having this same issue with my nucleo144 (F767) board.

I get interrupts going to OTG_FS_IRQ_Handler, which calls HAL_PCD_IRQHandler.

BUT, none of the functions hooked using USBF_Interface_fops_FS are ever called.  CDC_Init_FS never gets called.

I have been tracing the code for the last week and  the functions get hooked into hpcd-> pData properly, but I can't figure out where the HAL_PCD routines actually call the routines that are pointed at.

I tried putting in the call to

HAL_PWREx_EnableUSBVoltageDetector

, which didn't make sense, 

but it doesn't seem to exist in F7 HAL version 1.8.0.

It's like the CDC/PCD connection is broken in 1.8.0.

Andrei

[Marina Brener]

Posted on December 12, 2017 at 21:08

Hi Andrei,

I was using this function because the usb voltage on stm32h7 comes from VDD33 voltage level detector.

So the code is actually:

void HAL_PWREx_EnableUSBVoltageDetector(void)

{

  /* Enable the USB voltage detector */

  SET_BIT(PWR->CR3, PWR_CR3_USB33DEN);

}

Is stm32f767 has a USB regulator that needs to be enabled?

[Handzic.Dirk]

Posted on May 08, 2018 at 11:12

Thank you for sharing! I am working on a recently designed STM32H743II board and faced the same issue! Even the latest CubeMX4.25.0 and STM32H7Cube 1.2 dont fix this issue.

Next problem I am facing is to detect a USB memory stick attached to the USB HS HOST port using the MSC class. The USBH_Process() is always in the HOST_IDLE state.

Best regards

Dirk

[Imen.D]

Posted on May 08, 2018 at 11:39

Hello

Handzic.Dirk

,

ST team is aware about the issue ofmissing call to HAL_PWREx_EnableUSBVoltageDetector( ) and should fix this limitation in the coming release, but all

depends on releases planning and expected fixes or new features to embed.

It should be better to start a new discussion for new issue with more details even if the topic is the same.

Best Regards,

Imen.

[Marina Brener]

Posted on May 08, 2018 at 16:16

Hi Dirk,

Glad it helped!

I need to support a host mode as well as device mode.

How did you connect a usb host side cable to the nucleo board?

Thanks,

Marina