Hi Darrel,
I think we may be confusing each other with terminology and perhaps a slight difference in our design. I was using "1T" as the PWM step size. For example, if we were to use a step size of 10-usecs and 256 steps or levels then we'd have a 2560-usec period (256*10-usecs). The b0 output is 10-usecs or 1T long. The b1 output is 20-usecs or 2T long but I split it in half with 10-usecs or 1T on either side of the b0 10-usec (1T) output. That's how I get |2T|1T|1T|1T|2T| == |20us|10us|10us|10us|20us| == |half b2|half b1|full b0|half b1|half b2|. I thought this was how you were doing it but now I suspect I didn't look closely enough at your code and I apologize.
It also seems you think I'm combining the b2, b1, and b0 outputs and reducing resolution but I'm not. I'm simply generating the b2, b1, and b0 outputs during a single interrupt interval.
More later... I'm trying to see if I can upgrade a very old 12F683 Charlieplexed 5-pin 20-LED project from 64 levels per LED to 256 levels per LED using MIBAM. Wish me luck...
Kind regards, Mike
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