Missing ULPI clock enable macro and USB HS initialization failure after update to CubeMX v6.13.0 / FW_F7 v1.17.4

[CObri.1]

Hello ST team,

I’m using an STM32F723 microcontroller with USB HS (High Speed) in Communication Device Class (CDC) mode.

Everything worked perfectly using:

• STM32CubeMX v6.10.0

• STM32Cube FW_F7 v1.17.1

However, after migrating the project to:

• STM32CubeMX v6.13.0

• STM32Cube FW_F7 v1.17.4

the USB HS initialization fails due to what appears to be a missing clock enable definition and configuration in the generated code.

Observed behavior

In the generated usbd_conf.c file, inside:

void HAL_PCD_MspInit(PCD_HandleTypeDef* pcdHandle)

Previously (working version) CubeMX generated:

/* Peripheral clock enable */
__HAL_RCC_OTGPHYC_CLK_ENABLE();
__HAL_RCC_USB_OTG_HS_CLK_ENABLE();
__HAL_RCC_USB_OTG_HS_ULPI_CLK_ENABLE();

After the update, the generated code only contains:

__HAL_RCC_OTGPHYC_CLK_ENABLE();

As a result, the USB HS peripheral never initializes properly, and the code hangs in a timeout during initialization, specifically here:

stm32f7xx_ll_usb.c → function USB_CoreInit():

ret = USB_CoreReset(USBx);
/* Wait for AHB master IDLE state. */
do {
    count++;
    if (count > HAL_USB_TIMEOUT) {
        return HAL_TIMEOUT;
    }
} while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_AHBIDL) == 0U);

Root cause investigation

After comparing header files between FW_F7 v1.17.1 and FW_F7 v1.17.4, I found that the macro:

__HAL_RCC_USB_OTG_HS_ULPI_CLK_ENABLE()

is missing from stm32f7xx_hal_rcc_ex.h in the new version.

Previously, it was defined as:

#define __HAL_RCC_USB_OTG_HS_ULPI_CLK_ENABLE()   do { \
    __IO uint32_t tmpreg; \
    SET_BIT(RCC->AHB1ENR, RCC_AHB1ENR_OTGHSULPIEN); \
    tmpreg = READ_BIT(RCC->AHB1ENR, RCC_AHB1ENR_OTGHSULPIEN); \
    UNUSED(tmpreg); \
} while(0)

Now, this definition is completely gone, so CubeMX can’t generate the call and the USB HS peripheral never receives its ULPI clock.

Expected behavior

• CubeMX should still generate both:

__HAL_RCC_USB_OTG_HS_CLK_ENABLE();
__HAL_RCC_USB_OTG_HS_ULPI_CLK_ENABLE();

when USB_HS with ULPI PHY is selected.

• The missing macro should exist in the HAL headers as in previous firmware versions.

 

Environment

• MCU: STM32F723IEK

• CubeMX: v6.13.0

• STM32Cube FW_F7: v1.17.4

• USB Configuration: High Speed (ULPI PHY) / CDC

Request

Could you please confirm:

1. Whether the removal of __HAL_RCC_USB_OTG_HS_ULPI_CLK_ENABLE() is intentional,

2. If not, when it will be restored in a future release of the F7 HAL,

3. Or if there’s a new equivalent macro/API that should now be used instead?

[Imen.D]

Hello @CObri.1 

This should be fixed in the latest release of STM32CubeMx.

Please update and use latest release v6.15. Then, keep us informed about your progress on this.