__HAL_TIM_SetCompare for complementary PWM signals

[ashmithahr]

Is there a way to use __HAL_TIM_SetCompare() for negated signals while generating complementary PWM signals?

Any help would be appreciated

[waclawek.jan · Accepted solution]

The signal on TIMx_CHxN output is the same as on TIMx_CHx output, except inverted and dead time applied.

So, there is only one TIMx_CCRx register, determining the given channel's pulse width, and that is what __HAL_TIM_SET_COMPARE() (which is a newer name for __HAL_TIM_SetCompare()) sets.

In other words, there is no separate "pulse" register for the inverted output, so there is also no separate macro to set it.

JW

[FBL]

Hello @ashmithahr 

Some examples are provided for complementary signals, you can refer to in cube firmware to activate a complementary PWM. Some macros are generally maintained simply for legacy purpose. Here is a hands on to get used to it Hands-On with STM32 Timers: Dead-time Insertion in Complementary PWM Output (youtube.com)