[STM32F446xxx] Synchronise 6 PWM outputs

[VGros.3]

Hello,

I try to synchronise 6 PWM outputs for an BLDC controller.

I use 3 timers :

My target is STM32F446RET6 and I'm using STM32CubeIDE.

I read that I add to use master/slave mode. I'm not sure it is the best way, but I configured TIM2 (slave) as follow :

I chose TIM1 for my master timer :

 

For now, the PWM outputs don't start.

I think I'm missing something. For example I chose ITR1 but I can't find in datasheet where does it come from.

Thanks for your help,

Best regards,

Valentin

[waclawek.jan]

Read the TIM chapter in RM.

If clicking in CubeMX does not bring you success, ditch Cube and write your own program.

JW

[VGros.3]

Thanks JW, it helped me. Now it is working only using CubeMX.

Here is the configuration of the master timer :

Configuration of the slave timer :

 

And we have to start both timers :

 HAL_TIM_OC_Start(&htim4, TIM_CHANNEL_1); // master timer

 HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_4); // slave timer