stm32 - How to find value of APB1 Clock in STM32F429 -

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can tell me how find apb1 clock frequency of stm32f429? , how calculate baud rate of stm32f429.

p.s...please dont tell refer reference manual,as works done , tell me exact value of apb1 clock frequency

thankyou

using standard peripheral library, include stm32f4xx_rcc.h call void rcc_getclocksfreq(rcc_clockstypedef* rcc_clocks) , fill in structure pass values of bus clocks.

the correctness of answer depends on value set hsi_value or hse_value (a global uint32_t set value in hz of system's oscillator). can find in application's startup c file.

you should review values in startup file ensure core clock generated source expect (usually pll via internal (hsi) or external (hse) crystal). if correct , match aforementioned global constant answers given rcc_getclocksfreq correct.


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