- rgb_on();
- red.value = 0;
- grn.value = 0;
- blu.value = 0;
- wht.value = 0;
- } else {
- /* Crappy way to detect rising edges to change state of speed var */
- if (!(speed & 4) && (buttons & IN_PUSHBTN))
- speed |= 4;
- else if ((speed & 4) && !(buttons & IN_PUSHBTN)) {
- speed = (speed + 1) & ~4;
- reset_steps();
- }
-
- if (fade_steps) {
- fade_steps--;
- /* Continue the in-progress fade */
- red.value += red.increment;
- grn.value += grn.increment;
- blu.value += blu.increment;
- wht.value += wht.increment;
- if (fade_steps == 0) {
- red.value += red.remainder;
- grn.value += grn.remainder;
- blu.value += blu.remainder;
- wht.value += wht.remainder;
- }
- leds_set(red, grn, blu, wht);
- } else if (--incolor_steps == 0) {
- int newr, newg, newb, neww;
-
- /* Next led color. All off is not a valid option.
- * RGB values are stored and processed as 15-bit non-negative
- * integers. Since the RGB pwm values are 8 bits in width,
- * leds_set() uses >> 7 to convert each color's value.
- */
- do {
- newr = rand();
- newg = rand();
- newb = rand();
- neww = rand();
- } while (newr == 0 && newg == 0 && newb == 0 && neww == 0);
-
- /* Next incolor and fade steps */
- incolor_steps = rand_incolor_steps(speed);
- fade_steps = rand_fade_steps(speed);
-
- /* Compute increment and remainder for each led */
- red.increment = (newr - red.value) / fade_steps;
- red.remainder = newr - (red.value + red.increment * fade_steps);
- grn.increment = (newg - grn.value) / fade_steps;
- grn.remainder = newg - (grn.value + grn.increment * fade_steps);
- blu.increment = (newb - blu.value) / fade_steps;
- blu.remainder = newb - (blu.value + blu.increment * fade_steps);
- wht.increment = (neww - wht.value) / fade_steps;
- wht.remainder = neww - (wht.value + wht.increment * fade_steps);
- }
- dbgpin_low();
- while (!tmr_fired(TMR_FADE));
- dbgpin_high();