Has anybody converted the PWM frequency and duty cycle measurement exmaple from the STM32CubeMx examples to use STM32CubeMx to configure the hardware (.ioc file to configure the timers)?

[Mike Katz]

Posted on October 10, 2017 at 21:17

The 'STMCubeF2\Projects\STM32F207ZG-Nucleo\Examples\TIM\TIM_PWMInput' example configures the timers with direct calls to the HAL.

I am trying to keep all of the pin allocation and resource initialization within STM32CubMx itself.

Has anyone either created a .ioc file for this or measured frequency and duty cycle using STM32CubeMx to configure the timers?

Thanks in advance.

[Tesla DeLorean]

Posted on December 21, 2017 at 17:12

So perhaps 924 Hz ?

If SystemCoreClock is 8MHz, the chip isn't running at 48 MHz

TimHandle.Init.Prescaler         = 0;

TimHandle.Init.Period            = (SystemCoreClock / 38000) - 1;

sConfig.Pulse = ((TimHandle.Init.Period+1)*100)/50; // for 50% duty cycle

Accuracy here depend on the integer divisibility of the system (bus) clock

[Moh T.]

Posted on December 28, 2017 at 10:47

Hey Clive,

Thanks a lot it worked! Really appreciate your help.

BR