On Thu, Aug 27, 2015 at 2:46 PM, smplx <smplx@allotrope.net> wrote:
> >From what I've read from the description of BAM, if I were doing this in=
 C
> I would do it like this:
>
> // globals
> unsigned char   bit_cnt, bit_mask, value_out;
>
> void set_BAM(unsigned char val)
> {
>         // disable interrupts - how do you do this in XC8?
>
>         bit_cnt   =3D 1;
>         bit_mask  =3D 0x80;
>         value_out =3D val;
>
>         // enable interrupts
> }
>
> void service_BAM()
> {
>         bit_cnt--;
>
>         if (bit_cnt =3D=3D 0)
>         {
>                 if ((bit_mask & 0x80) =3D=3D 0)
>                 {
>                         bit_mask <<=3D 1;
>                 }
>                 else
>                 {       bit_mask =3D 1;
>                 }
>
>                 bit_cnt =3D bit_mask;
>
>                 // I'm assuming the output pin is defined at compile time
>
>                 if ((value_out & bit_mask) =3D=3D 0)
>                 {
>                         // reset output pin
>                 }
>                 else
>                 {       // set output pin
>                 }
>         }
> }

Hi Sergio,

Thanks for the ideas. Just for reference, in xc8 you can enable and
disable interrupts by using ei() and di() respectively.

For my BAM code I'm hoping to do 8 channels at once, so I'll be
preprocessing the current dimmer value of all channels to make a
single variable that holds the state of all channels for any given
time slice. Hopefully it works out!

Josh
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