How can I generate Arbitrary PWM with specific pattern on C2834x DSP?

Hello.

I am trying to generate a signal with same width as in figure on 2834x DSP using c2000 support package. Unfortunately ePWm modules CANNOT be used and the only option that I have got are the GPIO pins. I tried repeating sequence stair block and it worked fine When sampling time was 1/(3*140000). However, when decreasing the samplig time to 1/(12*140000), the PWM pin behaviour becomes awkward and the pins is either always ON r always OFF. I tried modifing the step size to be lower value 1/(120*140000), but it also gave this awkward behaviour.

Answer 1

[Venkatesh Chilapur]

Hi,

Here is an idea:

I set the solver to 0.01step time in above case.

HTH,

Regards,

Venkatesh C

[Ahmed Khamis]

This doesn't work, I even checked the output of "rem" block, it is zero all the time. Anyways, I doubt that this logic would output a signal with same pattern shown in scope in my original question.