terminal/lcd.ino

   1 #include "lcd.h"
   2
   3 struct backlight backlight;
   4
   5 void lcd_setup(void)
   6 {
   7         lcd.createChar(0, char_music);
   8         lcd.createChar(1, char_smile);
   9
  10         lcd.begin(COLS, ROWS);
  11         lcd.blink();
  12
  13         pinMode(LCD_BL, OUTPUT);
  14 }
  15
  16 void bl_tasks(void)
  17 {
  18         if (backlight.state == BL_FLASH)
  19                 if (!--backlight.timer)
  20                         backlight.state = BL_OFF;
  21
  22         switch (backlight.state) {
  23                 case BL_OFF:
  24                         digitalWrite(LCD_BL, 0);
  25                         break;
  26                 case BL_FLASH:
  27                 case BL_ON:
  28                         digitalWrite(LCD_BL, 1);
  29                         break;
  30         }
  31 }
  32
  33 void bl_set(enum backlight_state state)
  34 {
  35         backlight.state = state;
  36         if (state == BL_FLASH)
  37                 backlight.timer = (unsigned int) -1;
  38 }