Tooltron

#include "led.h"

#include "time.h"

char blink_count;

enum color_t blink_color;

uint16_t blink_period, blink_ticks;

static void led_color(enum color_t color) {

  switch (color) {

    case OFF:

      led_off();

      break;

    case RED:

      led_red();

      break;

    case YELLOW:

      led_yellow();

      break;

    case GREEN:

      led_green();

      break;

  }

}

void led_tick() {

  if (blink_count) {

    if (++blink_ticks >= blink_period) {

      blink_ticks = 0;

      if (--blink_count % 2) {

        led_color(blink_color);

      } else {

        led_off();

      }

    }

  }

}

void led_blink_start(unsigned int period_ms, char n_times, enum color_t color) {

  blink_count = n_times*2-1;

  blink_period = period_ms/2/TICK_MS;

  blink_ticks = 0;

  blink_color = color;

  led_color(color);

}

char led_blink_done() {

  return blink_count == 0;

}