STM32WB55 external clocks(32.768KHz, 38MHz) not working

[brian.kwon12]

Hello All

I have a cutom board. I am working on STM32WB55VGQ6(BGA129).
2 crystals(32.768KHz, 38MHz) output waves are not coming.
I checked waveform by using an oscilloscope and OSC-IN/OUT pins are ground level(0V)
Voltage conditions all 3.3V : VDD, VDDUSB, VDDRF, VDDA, VDDSMPS
Crystal part# : FW384WFIN1, AGS05-32.768KHZ-6T
Expers please help me.

[brian.kwon12]

Hi MM
Thank you for your interests.
"STM32WB55" is set to use internal clock by default.
It was confirmed that the MCU works by connecting USB using STM32cubeprogramer.
The reason for choosing STM32WB55 is because of the customer's request.

[MM..1]

Then in IDE you can only use red external tools config ... programmerCLI

[AScha.3]

and you believe, he has any idea what you talking about ?

[MM..1]

By response to i ask why choice not use stlink and he respond WB55 choiced customer Yes have no idea.

But i hope he wake up 🙂 

[brian.kwon12]

Hi MM
Thank you for your quick reply and also thank you for your help 🙂

[brian.kwon12]

Hi MM
not use stlink also customer's request

[MM..1]

Sorry , but dont write this dont helping another posts. Is you trouble solved or not? WB type dualcore require before first use internal firmwares update and choice BT core fw type. Read and do C:\Users\YOU\STM32Cube\Repository\STM32Cube_FW_WB_V1.12.1\Projects\STM32WB_Copro_Wireless_Binaries\STM32WB5x\Release_Notes.html 
1.12.1 can be newer on your pc...

[brian.kwon12]

Hi MM

Thanks a lot for your help.
I'll take a good look at the document you said.