Bit Angle Modulation (BAM) in a PIC

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  1. - 5th March 2010, 18:25 #11
    Mike, K8LH's Avatar
    Mike, K8LH
    Mike, K8LH is offline Member
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    Darrel (and gang),

    A long overdue assembly language Charlieplexed BAM example for 20 LEDs on a 12F683. Example uses 8-bit 256 step BAM driver with a 1-usec step size. Refresh rate is 781-Hz with a 1280-usec frame rate. LED "0" is animated. That is, it ramps from duty cycle value of 0 up to 127 and then back down to 0. LED "10" through LED "19" are lighted with duty cycle values of 1 through 10 so you can check out "low end" illumination.

    You might just hook up a single LED for LED "0" to check out the program. Just connect the LED cathode to GP5 and the LED anode to GP0.

    Kind regards, Mike
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    Last edited by Mike, K8LH; - 5th March 2010 at 18:29.
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