Why is my HSE crystal not working on NUCLEO-L433RC-P board ?

[freeflyer]

I have fitted an 8MHz crystal with 8.2pF capacitors to the NUCLEO-L433RC-P development board, but it is not working.

The software goes to an error handler when configuring the clocks, becuase of a time out iduring the function HAL_RCC_OscConfig (wait till HSE is ready)...

/* Set the new HSE configuration ---------------------------------------*/
 __HAL_RCC_HSE_CONFIG(RCC_OscInitStruct->HSEState);
 
 /* Check the HSE State */
 if(RCC_OscInitStruct->HSEState != RCC_HSE_OFF)
 {
 /* Get Start Tick*/
 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;
 }
 }
 }

The part numbers for the crystal and capacitors are below...

Crystal: CG04874-8M

https://www.ndk.com/en/products/upload/lineup/pdf/NDKX03-00009_en.pdf

Capacitors: KGM05ACG1H8R2CH

https://datasheets.kyocera-avx.com/C0GNP0-KGM.pdf

The clock configuration is below...

The board modifications are below:

- fitted X2

- fitted C47 and C48

- connected solder bridges SB67 and SB69

- disconnected solder bridges SB68 and SB70

PS.  This relates to my other post about I2S master clock speed...

https://community.st.com/t5/stm32-mcus-products/can-i-use-an-internal-rc-oscillator-to-achieve-an-i2s-master/m-p/859639#M289324

[STOne-32]

Dear @freeflyer ,

my 2 cents checks :

1) be sure at software level that HSE is enabled and not in bypass mode 

2) even not recommended, check using an oscilloscope probe Osc_out pin , you can check it at the solder bridge . Not touch the Osc_in pin

3) remove the software timeout from the function HAL ( just for test ) as should using the HSI at 16MHz , when doing this switch to HSE for PLL after .

let us know

STOne-32