#include "lcd.h"

struct backlight backlight;

void lcd_setup(void)
{
	lcd.createChar(0, char_music);
	lcd.createChar(1, char_smile);

	lcd.begin(COLS, ROWS);
	lcd.blink();

	pinMode(LCD_BL, OUTPUT);
}

void bl_tasks(void)
{
	if (backlight.state == BL_FLASH)
		if (!--backlight.timer)
			backlight.state = BL_OFF;

	switch (backlight.state) {
		case BL_OFF:
			digitalWrite(LCD_BL, 0);
			break;
		case BL_FLASH:
		case BL_ON:
			digitalWrite(LCD_BL, 1);
			break;
	}
}

void bl_set(enum backlight_state state)
{
	backlight.state = state;
	if (state == BL_FLASH)
		backlight.timer = (unsigned int) -1;
}