Posted by Ay3.14 on 2016-12-24 11:55

Hi,

and thank-you to ac6 for providing us the “System Workbench for STM32”.

Creating a new C project and due to board selection “STM32F407G-DISC1” and
“StdPeriph” library usage, SW4STM32 generates:

a) file “stm32f4xxh” which contains no “#define STM32F407G” but:
”

1. if defined(STM32F40_41xxx)

   defined(STM32F427_437xx)

   defined(STM32F429_439xx)

   defined(STM32F401xx)

   \

#if !defined (HSE_VALUE)
#define HSE_VALUE ((uint32_t)25000000) /*!< Value of the External oscillator in Hz */
#endif /* HSE_VALUE */
”
and therefore will set “HSE_VALUE” to 25000000 insteed of 8000000

b) file “system_stm32f4xx.c” contains no “#define STM32F407G” but:
”

1. if defined(STM32F40_41xxx)

   defined(STM32F427_437xx)

   defined(STM32F429_439xx)

   defined(STM32F401xx)

   defined(STM32F469_479xx)

#define PLL_M 25
”
and therefore will set “PLL_M” to 25 insteed of 8.

Why happens this?
What can I do to let MCU run with 168 MHz (without manipulating above generated files)?

Albert