10 years, 3 months ago.

Clock speed on Nucleo STM32F401

Am I right from looking at the mbed for STM32F401 Nucleo code, that the clock is driven direct from the HSI clock at 16MHz ?

I am looking to increase the clock speed and also enable the 48MHzc lock for the USB. Any easy way to do that, or do I need to program the RCC registers directly ?

Somebody should probably revise those clock configuration, not only for F401 board, others have also strange clocking set. Like clock settings for 103 target, many macros are commented out there, looks to me that HSI is active which would indicate 8MHz system clock..

Thanks for pinpointing this. I am going to ask developers if this is an intention.

Regards,
0xc0170

posted by Martin Kojtal 26 Feb 2014
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