/**
* Update the triacs at interrupt time, when GI dimming is in effect
* DIM_BITS says which triac strings need to be turned on briefly
* during this phase of the AC cycle.
*/
static __attribute__((noinline)) void triac_rtt_1 (U8 dim_bits)
{
static U8 triac_bits;
/* Get the current triac states */
triac_bits = pinio_read_triac ();
/* Turn on the lamps that need to be dimmed at this level. */
pinio_write_triac (triac_bits | dim_bits);
/* Now disable the dimmed lamps for the next phase */
pinio_write_triac (triac_bits);
}
void triac_update (void)
{
U8 latch;
/* Refresh the triac latch by turning on all 'normal'
* outputs, masked by anything allocated by a lamp effect. */
latch = triac_output;
latch &= ~gi_leff_alloc;
latch |= gi_leff_output;
pinio_write_triac (latch);
}
