Newbie struggling with Complimentary Output of Timer

[joeaverage]

Hi,

first foray into STM32 with a Nucleo-F7222ZE.

Using CubeMX I have set up Timer1 to generate PWM. I can get outputs OC1, OC2, OC3 etc, but I cannot get the complementary outputs OC1N, OC2N, OC3N to operate.

 

I feel like I'm missing something, like dead band between OC1 and OC1N for example..

I've tried just about every combination I can think of in CubeMX, with no result so far.

 

Craig

[TDK]

Did you try HAL_TIMEx_PWMN_Start? Show your code.

 

Here's a working example:

STM32CubeF7/Projects/STM32756G_EVAL/Examples/TIM/TIM_ComplementarySignals/Src/main.c at 99ad6215a6bd8101a4981137f4a2f06c69e29d37 · STMicroelectronics/STM32CubeF7

[joeaverage]

Hi,

thanks for your reply, and I rather think you are on to it. I have used this:

HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_1);

 

to start the timer. Your reply suggests I need to start the complementary output specifically. I'll try it. 

Thanks

Craig

[joeaverage]

Hi, I have tried:

 

HAL_TIM_PWMN_Start(.....

HAL_TIM1_PWMN_Start(

 

and  get compile errors whenever I try to include either the timer number (1) or the  'N' for complementary

 

Craig