STM32H7A3 Nucleo-144 ATM32H7A3ZITQ6, USB USB_CoreReset fails

[Marius CO]

I Am facing another issue with this board.

Her is my USB setting

• USB_OTG_HS is Device Only
  • NVIC Settings
    • USB OTG EndPoint In/Out 1 INT checked
    • GLobal Int checked
• USB Device
  • Class Virtual Port

Then the init fails in USB_CoreReset with timeout.

I checked the HAL_PCD_MspInit and pins looks OKay.

static HAL_StatusTypeDef USB_CoreReset(USB_OTG_GlobalTypeDef *USBx)
{
 __IO uint32_t count = 0U;
 
 /* Wait for AHB master IDLE state. */
 do
 {
 count++;
 
 if (count > 200000U)
 {
 return HAL_TIMEOUT;
 }
 } while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_AHBIDL) == 0U);
 
 /* Core Soft Reset */
 count = 0U;
 USBx->GRSTCTL |= USB_OTG_GRSTCTL_CSRST;
 
 do
 {
 count++;
 
 if (count > 200000U)
 {
 return HAL_TIMEOUT; <<<<<<<<<<<<< FAILS
 }
 } while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_CSRST) == USB_OTG_GRSTCTL_CSRST);
 
 return HAL_OK;
}

I just discovered that My USB config

 /**USB_OTG_HS GPIO Configuration
 PC0 ------> USB_OTG_HS_ULPI_STP
 PC2_C ------> USB_OTG_HS_ULPI_DIR
 PC3_C ------> USB_OTG_HS_ULPI_NXT
 PA3 ------> USB_OTG_HS_ULPI_D0
 PA5 ------> USB_OTG_HS_ULPI_CK
 PB0 ------> USB_OTG_HS_ULPI_D1
 PB1 ------> USB_OTG_HS_ULPI_D2
 PB10 ------> USB_OTG_HS_ULPI_D3
 PB11 ------> USB_OTG_HS_ULPI_D4
 PB12 ------> USB_OTG_HS_ULPI_D5
 PB13 ------> USB_OTG_HS_ULPI_D6
 PA8 ------> USB_OTG_HS_SOF
 PB5 ------> USB_OTG_HS_ULPI_D7

The PA5 USB_OTG_HS_ULPI_CK

as

 GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_5;
 GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
 GPIO_InitStruct.Pull = GPIO_NOPULL;
 GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
 GPIO_InitStruct.Alternate = GPIO_AF10_OTG1_HS;
 HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
[...]
 __HAL_RCC_USB_OTG_HS_CLK_ENABLE();
 __HAL_RCC_USB_OTG_HS_ULPI_CLK_ENABLE();

I verified with the Ossciloscope and PA5 [USB_OTG_HS_ULPI_CK]

does not have a clock.

I tried on 2 boards, and I dont think both boards are deffective.

Any help would be appreciated.

[Marius CO]

FIXED!

I started another project from scratch and at the step after selecting the board

wher asked to keep defaults I let it go.

On initial project I started on a clean slate because the code was working on STM32G474

with a clean slate project, where I start from scratch configuring the pins.

Unfortunately it did not work for STM32H7A3.