Sine wave lookup to PWM8 output with no latency? | Cypress Semiconductor
Sine wave lookup to PWM8 output with no latency?
Hello all -
I am a newbie, using a PSoC 1, and I need to generate a PWM output that is a sine wave (after filtering). The sine wave values will be from a lookup table (similar to the example program using a sine wave lookup to drive a DAC).
My question has to do with updating the PWM with each new lookup value. I cannot stop the PWM, or delay it, while loading the next sine wave value. If that happens, then the frequency of the sine wave output will be off.
So what I need to do is to load the next PWM pulse width value (the period is always 255) without adding any extra delay to the PWM output.
I have also been wondering if something like a counter or a one-shot would also work for this, and if one of those may make the solution easier?
Thanks in advance for your help!