AnsweredAssumed Answered

No uart activity stm32f105

Question asked by carter.bob on Jun 30, 2014
Latest reply on Jul 11, 2014 by carter.bob

On our board which contains stm32f105R8, I can see no usart1 activity. I'ved used the supplied ST printf example to configure usart1.

Our board has an external 8MHz crystal and I've seen it mentioned that the CL series expects an external 25Mhz crystal by default, so that may be the issue. I have set the XTAL clock value to be 8MHz in uVision4 tools hoping that would solve our problem but no luck.

Does anyone have the correct settings for stm32f10x.h in order to use the external 8 Mhz crystal to generate a system clock of 48 Mhz?

Thank you