How to synchonize 2 PWM on the same clock.

[FightKol]

[FightKol]

Hello, 

I want to do 2 PWM, 1 on TIM 1 the other one on TIM8 and i'd like to synchronize both on the same clock. How can i do it please ? 

I use CubeMX and keil uvison 5 and HAL functions...

Thanks

[Uwe Bonnes]

Tell first why you want to use two timers for 2 PWMs. One N-Channel Timer can do N-PWM that are synchronized. Otherwise read the timer docs how to start timers synchronous.

[S.Ma]

I would guess that both timers should be enabled by a common trigger signal. Dig through the spec (reference manual and datasheet) for more details.

With 2 advanced timers you can have up to 6 PWM plus their negate outputs (dual motor control drive for example)

[waclawek.jan]

You didn't tell us which STM32 are you using, but there are ample examples in the Cubes, e.g. for 'F446, [CubeF4]\Projects\STM32446E_EVAL\Examples\TIM\TIM_Synchronization , for yours you'll find it at a similar path, for one of the related devboards.

JW

[FightKol]

I use STM32F4 discovery (STM32F407VG). I've to pilot 4 command that are complementary 2 to 2, for 2 synchronous BOOST.

So i need 4 signals, and i use 2 timers in PWM mode to generate 4 signals (Tim 1 : CH1 and CH1N and Tim 8 : CH1 and CH1N).

I succeeded this step, now I want to phase shift the timers 1 and 8 of pi but i can't put them on a same clock...

I hope u understand what i mean ..

[FightKol]

I show you the code and settings of Cube MX. If you have an idea...

Thanks a lot !