ChibiOS Free Embedded RTOS

Hey there,

I am tring to use a USB PHY ULPI module to run USB HS on STM32H750 chip with ChibiOS.
After configured

and also modified the certain GPIO Pin set to alternate mode. But the device doesn't work with the PC "unable to enumerate USB device".
Also, when I turning to the stm32 datesheet, it told me "OTG-HS1 supports both full-speed and high-speed operations, while OTG-HS2 supports only full-speed operations." Does it mean that I should define "STM32_USE_USB_OTG1_HS" as TRUE instead of the "OTG2" one? (I tried but nothing happened.)
So I am wondering how could I do to make the ULPI PHY work?

Appreciate,
Jun ASAKA.

Hi,

The one with HS should be STM32_USB_USE_OTG2 (which internally uses OTG_HS as defined in ST headers). The board file must define BOARD_OTG2_USES_ULPI.

Which board are you using? there could be a problem in clock settings and/or GPIO settings.

Giovanni

Giovanni wrote:Hi,

The one with HS should be STM32_USB_USE_OTG2 (which internally uses OTG_HS as defined in ST headers). The board file must define BOARD_OTG2_USES_ULPI.

Which board are you using? there could be a problem in clock settings and/or GPIO settings.

Giovanni

Thanks for your reply. I am using the board made by myself. I will check the clock and IO configuration.

Thanks,
Jun ASAKA.

Giovanni wrote:Hi,

The one with HS should be STM32_USB_USE_OTG2 (which internally uses OTG_HS as defined in ST headers). The board file must define BOARD_OTG2_USES_ULPI.

Which board are you using? there could be a problem in clock settings and/or GPIO settings.

Giovanni

Hi,
After digging up the GPIO and clock config, the problem still exists.
I did these:

Code: Select all

#define STM32_USB_USE_OTG1                  FALSE
#define STM32_USB_USE_OTG2                  TRUE
#define STM32_USE_USB_OTG2_HS               TRUE

into mcuconf.h

Code: Select all

#define BOARD_OTG2_USES_ULPI

into board.h

set all ULPI related IO Pins to alternate 10 mode, floating, with max speed

set the clock tree in mcuconf.h as the same as the working one generated by CubeMX

And the USB still unable to be enumerated.
I also tried the default clock tree configuration in the mcuconf.h form STM32H750XB_DISCOVERY board (the HSE frequency is same as my board), and the problem just remained unchanged. So is there any slips in my configuration caused the issue?

Regards,
Jun ASAKA.

Hi,

STM32_USE_USB_OTG2_HS does not exists so it is pointless to add it, in mcuconf.h there are all valid settings.

I don't have an H750 board with ULPI so cannot test this configuration, ULPI has only been tested on other devices (F769).

Giovanni

I am asking on Discord ChibiOS server if somebody used ULPI on H7. BTW, feel free to join and ask questions also there.

Giovanni

Hi,

I got confirmation of ULPI working on STM32H743 on Discord, there must be some missing detail in your setup.

Giovanni

Giovanni wrote:Hi,

I got confirmation of ULPI working on STM32H743 on Discord, there must be some missing detail in your setup.

Giovanni

Ok, thanks a lot.
I'll check my config again.

Jun ASAKA.

Hi there,

I was Googling some stuff for an STM32 project I'm working on and came across this post on the ST forums that might be related. https://community.st.com/t5/stm32-mcus- ... d-p/257375

Best of luck.

Hi,

Thanks, this could be related but currently I don't have HW to test this.

Giovanni