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Running STM32F4 from an Oscilator

Question asked by pilli.isaac.001 on May 29, 2015
Latest reply on May 29, 2015 by waclawek.jan
System Clock Configuration tool is doing a great job to generate init code for STM32F405RG however it does not support external clock oscillator which is fed into OSC_IN (pin 5) only. (meaning Osc not Crystal).
I suspect that the  RCC_CR_HSEBYP bit setting does not support such hardware.
Is there a code example for the required modifications into the tool generated system_stm32f4xx.c file ?