Default CubeMX project for Nucleo-U5A5ZJ error in SystemClock_Config

[andreasp00]

Hello.

I'm working on setting up a brand new Nucleo STM32U5A5Z development board and have some issues.

My project is a completely bare-bones default with no security or BSP enabled. The application fails in SystemClock_Config() and enters the error handler. The issue seems to be related to the HSE as SystemClock_Config returns HAL_TIMEOUT here:

      /* Check the HSE State */
      if (pRCC_OscInitStruct->HSEState != RCC_HSE_OFF)
      {
        tickstart = HAL_GetTick();

        /* Wait till HSE is ready */
        while (READ_BIT(RCC->CR, RCC_CR_HSERDY) == 0U)
        {
          if ((HAL_GetTick() - tickstart) > HSE_TIMEOUT_VALUE)
          {
            return HAL_TIMEOUT;
          }
        }
      }

Thanks!

[mƎALLEm]

Hello,

1- In next time please use </> to share a code. Please read How to write your question to maximize your chances to find a solution . So I invite you to edit your post to comply with the rule.

2- What clock source frequency value you set to HSE? 16MHz in HSE crystal mode?:

[andreasp00]

Thanks for the response!

My bad with the code, I've been getting too used to writing in markdown :)

Here is a snippet of the default clock config:

- System clock is set to 16 MHz

- HSE at 8 MHz is used as clock source.

- HSE enabled as "BYPASS Clock Source"

Aren't these settings weird as a default for the Nucleo board? I would expect 160 MHz as the sysclk. Also, changing HSE to "Crystal/Ceramic Resonator" seems to fix the error in SystemClock_Config().

[mƎALLEm]

Hello,

Thank you for the sharing.

It seems to be an issue with that default config.

Please try the configuration I shared previously. According to the board's schematic, HSE is not using Bypass mode (For STLINK MCO output) but a crystal of 16MHz:

As you can see in the schematic, STLINK-MCO is disconnected by default and the default configuration is a Crystal of 16MHz.

If you confirm that, I will raise a ticket to fix that in CubeMx.

Hope that helps.