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EMach.3 · 2022-11-13

I need to generate PWM signals with adjustable number and frequency to drive a step motor. I expect the frequency ranges from 50Hz to 200KHz and the pulses count ranges from 1 to 2k. I have tried 3 different ways including: using timer interrupt to c...

EMach.3 · 2022-11-13

Thank you for your great advice!

EMach.3 · 2022-11-13

Thank you! I just checked the content of every register of TIM1 in debug mode. I found the cotent was accurate in debug mode. And the pulse count was also accurate up to 200kHz. The difference between debug mode and normal startup, I think, is the d...

EMach.3 · 2022-11-13

emm...I don't know why. But yes, the timer goes well without selecting a clock source in CubeMX. Maybe the default is Internal Clock. And I have just tested to set the Internal Clock. But the problem remains even when the frequency is just 20kHz. Her...

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Why the number of pulses is less than expected when I am using One Pulse Mode and Repetition Counter (RCR) to generate adjustable PWM pulses with number and frequency?

Re: Why the number of pulses is less than expected when I am using One Pulse Mode and Repetition Counter (RCR) to generate adjustable PWM pulses with number and frequency?

Re: Why the number of pulses is less than expected when I am using One Pulse Mode and Repetition Counter (RCR) to generate adjustable PWM pulses with number and frequency?

Re: Why the number of pulses is less than expected when I am using One Pulse Mode and Repetition Counter (RCR) to generate adjustable PWM pulses with number and frequency?