Bit Angle Modulation (BAM) in a PIC

[JEC]

I'd run in to the exact same issues between 127 and 128. Never had time to investigate it further.

My implementation just used a state machine in the interrupt routine - 1 state for each bit.

Each state sets TMR1 to a different level, then sets / clears the appropriate pins.

I assume that you're implementing the 2xF 'mirror' method in a similar way? Very clever.

[Darrel Taylor]

Hi Ioannis

Hi John,
  Just yesterday I was thinking about how this might be good for your Christmas Lights.
  Apparently, the thought had not escaped you.

I assume that you're implementing the 2xF 'mirror' method in a similar way?

Well, the best method, is still to be determined. I'm trying every way I can think of ...

Currently, I'm rotating the DutyCycle out to the Pin, and when rotating it left, I shift the timer value Right to give 1/2 the period for the next bit, when rotating right, the timerval gets shifted left for 2x the period.

I'm also trying to incorporate the "Cylon Scanner" that Bruce and I were playing with last year.
With the mirror image, the bit's are scanned back and forth much like a Cylon (or Kitt the car).

Never thought that optimization exercise would actually be useful some day.
<br>

[JEC]

&nbsp; Just yesterday I was thinking about how this might be good for your Christmas Lights.
&nbsp; Apparently, the thought had not escaped you.

Pity the 10F doesn't have a TMR1...