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MKola · 2019-08-30

I'm programming a custom board built around the STM32F401 MCU and I'm having a hard time configuring the system clock.I'm using a 8MHz external crystal and I'm trying to set up the PLL to get the maximum frequency given by the datasheet, i.e. 84MHz. ...

MKola · 2019-07-18

So I've made two prototypes of a new custom board with a STM32F405RG microcontroller at heart and while one of them works totally fine, after a few seconds or more I'm getting a hard fault on the second one.To investigate the origin of the hard fault...

MKola · 2019-09-02

well, of course it works now - turns out it was a hardware issue after all. Thanks everyone for helping!

MKola · 2019-09-02

I feel very dumb now - of course I forgot connecting the capacitor to the VCAP2 pin - will try soldering directly to the MCU pin and check if it fixes anything

MKola · 2019-09-02

I just created an empty project in CubeMX and the code crashed in the HAL_RCC_ClockConfig() function (after configuring the PLL as the system clock source)

MKola · 2019-09-02

That's exactly the thing I did, the initialization code is straight out of the SPL (in file system_stm32f4xx.c), I just changed the PLL values to match the value of HSE (SPL assumed 25MHz crystal)

MKola · 2019-08-30

the value is 2 indeed.

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Problem with clock configuration of STM32F401VCT6 MCU - works fine on 42MHz clock, but crashes when set to 84 MHz

Getting a hard fault on only one of two identical boards

Re: Problem with clock configuration of STM32F401VCT6 MCU - works fine on 42MHz clock, but crashes when set to 84 MHz

Re: Problem with clock configuration of STM32F401VCT6 MCU - works fine on 42MHz clock, but crashes when set to 84 MHz

Re: Problem with clock configuration of STM32F401VCT6 MCU - works fine on 42MHz clock, but crashes when set to 84 MHz

Re: Problem with clock configuration of STM32F401VCT6 MCU - works fine on 42MHz clock, but crashes when set to 84 MHz

Re: Problem with clock configuration of STM32F401VCT6 MCU - works fine on 42MHz clock, but crashes when set to 84 MHz