Nucleo-H743zi2 + freeRTOS, TIM4 PWM doesn't work!

[Cyeoj.1]

I'm using nucleo-h743zi2 with freeRTOS for drone flight controller project

before using h743, I tested my code on f429zi everything works fine

But after migrate to h743, All PWM channels on TIM4 does't work,

Prescaler and counter period is correct for 500Hz operation(prescaler:12-1 , counter: 40000-1, APB timer clock 240mhz)

With another timer (1, 3, 12) on same setting ,PWM works fine

Is there any special consideration for H743-TIM4 ??

Here's my git

https://github.com/ch-jwoo/FlightController

[waclawek.jan]

> All PWM channels on TIM4 does't work,

What is the expected behaviour and how does the observed one differ?

Read out and check/post the TIM and relevant GPIO registers content.

JW

[Cyeoj.1]

I want PWM signals that can control Drone motor controller(ESC).

50%~100% duty cycle, 500Hz

I've tested all Timer with same code and prescaler to generate demanded signals.

Every timer works fine except for TIM4. Only TIM4 generates 2.5Hz, 50%~100% duty cycle signal.

I'm using (i2c1, i2c2, UART3,8,7 SDMMC1), Is there any probability peripherals colliding each other?

[TDK]

There isn't anything special about TIM4 that is relevant here. Gotta be something wrong in the code.

> sConfigOC.Pulse = 0;

This is a 0% duty cycle, so not really a PWM.

[TDK]

Peripherals are independent, but if something else is also trying to use those pins, it's not going to work.

[waclawek.jan]

Read out and check/compare to working/post the TIM4 registers content.

Also check/post clock settings for TIM4 in RCC.

JW

[NorfLoud]

And if "TIM4.PWM Generation Channel 1 -> Pulse" is raised from 0 to 20000, then the PWM will appear?