APB1/TIM2 clock

hospodar · ‎2015-04-03

Posted on April 03, 2015 at 20:02

How to find out APB1 clock frequency? I want to know TIM2 clock, which is connected to APB1. I use STM32F103 and standard peripheral library.

Thank you.

Tesla DeLorean · ‎2015-04-19

Posted on April 20, 2015 at 02:30

I think he want time period of 2 second so TIM_Period = 20000 - 1.

I'd be surprised.

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huydungshpy · ‎2015-04-19

Posted on April 20, 2015 at 05:57

Update_event = TIM_CLK/((PSC + 1)*(ARR + 1)*(RCR + 1))

0.5 = 36M/(3600*20000)???

what wrong with me?? please explain!

huydungshpy · ‎2015-04-20

Posted on April 20, 2015 at 11:43

I am wrong Timer 2 is 72M

sorry!