Problem when change delai of a synced timer

[mika14]

Hello Forum,

I am struggling with a sync timer problem and I have no more idea for resolve it. Here we go :

TMR5 is configured as master for TMR3

TMR3 is configured as master for TMR4

I configured TMR3 as OnePulse output signal with a delai from a OutputCompareStatus of TMR5

I configured TMR4 as PWM signal started by OutputCompareStatus of TMR3

I do Init/Configure/Start after a powerOn and the system works well. I want to do an update of the delai on TMR3 and, impossible to have a correct synchronization between my signals as in the first call.

I did several attempt and I lost my self in all theses, someone know the exact sequence of call I have to do for make the magic happened ?

Thanks a lot

When it works,

Any other attempt stop/update same delai/start, the blue wave loose the synchro

Mickael

[TDK]

If you give a graph that shows the behavior you want, typically something can be done.

> I configured TMR4 as PWM signal started by OutputCompareStatus of TMR4

Probably a typo here. Unlikely to be able to start TIM4 by looking at itself.

[mika14]

yes ! Error of typo, I added also graphs, thanks a lot for your feedback.

[mika14 · Accepted solution]

Hello,

For people meet same kind of problems, the DeInit API for TIM_PWM and TIM_OC can be replaced by

__HAL_RCC_TIMX_FORCE_RESET/

__HAL_RCC_TIMX_RELEASE_RESET

Then, I modified my value of Delay of my first slave and duty of second slave.

Finally, call Init/ConfigChannel/MasterEx/SlaveConfig,Start.

Bye

Mickael