STM32F051K8 curious noises Timer14 + TIM2 in kascade mode

andrey2richter · ‎2016-09-28

Posted on September 28, 2016 at 22:19

Hello everybody,

since two days I struggle with curious noises at Pin 6 (TQFP32) by STM32F051K8.

In my application I try to start TIM2 with TIM14 in kaskade mode (I have slight changed the sample code).

I attach my source and screenshots with the signals.

On the screen you can see signal of TIM14 (yellow) Pin 10 and

signal with noises of TIM2 Pin 6 (blue).

Has anyone any idea what's wrong?

Thanks in advance!

#stm32f051 #tim2 #tim14

andrey2richter · ‎2016-09-28

Posted on September 28, 2016 at 22:43

and here is the source code ...

________________

Attachments :

main.c : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006I0tc&d=%2Fa%2F0X0000000bfD%2FXFcjL6TvyuaTPggATWSursNWj.wlmYrMa2XrdBgLIu4&asPdf=false

Walid FTITI_O · ‎2016-09-29

Posted on September 29, 2016 at 13:25

Hi richter.andrey,

The TIM2_CH1 is on PA0 and not on PA6. Verify that you put the measure point on the right place , and GND is connected. Fothe code it seems ok , just checkth TIM2_CH1 pin polarity and delect the CtrlOutputEnable for TIM14.

-Hannibal-