void lcd_init4bitmode(){
lcd_reset();
_delay_ms(5);
lcd_sendcmd(0x28); // 4data line
lcd_sendcmd(clear);
lcd_sendcmd(0x0c); // display on cursor off
lcd_sendcmd(0x06); // increment cursor right
lcd_sendcmd(0x80); // set courser at the beginning of the first line
_delay_ms(20);
}
void
lcd_switch(uint8_t hb)
{
if(hb) {
LCD_BL_DDR |= _BV(LCD_BL_PIN); // Switch on, init
#ifdef LCD_BL_PWM
LCD_BL_PWM = erb((uint8_t*)EE_BRIGHTNESS);
#else
LCD_BL_PORT |= _BV(LCD_BL_PIN);
#endif
lcd_init();
lcd_on = 1;
} else {
#ifdef LCD_BL_PWM
LCD_BL_PWM = 0;
my_delay_ms(1); // else the dpy is still on.
#endif
LCD_BL_PORT &= ~_BV(LCD_BL_PIN); // Switch off the display
lcd_sendcmd (LCD_CMD_SLEEPIN);
lcd_on = 0;
}
}
void
lcd_contrast(uint8_t hb)
{
uint8_t contrast = erb((uint8_t*)EE_CONTRAST);
if(hb == 0xFE) {
contrast--;
} else if (hb == 0xFD) {
contrast++;
} else if (hb == 0xFC) {
//keep the eeprom value
} else {
contrast = hb;
}
if(contrast < 40) contrast = 40;
if(contrast > 80) contrast = 80;
ewb((uint8_t*)EE_CONTRAST, contrast);
lcd_sendcmd (LCD_CMD_SETCON);
lcd_senddata (contrast);
DS_P( PSTR("Contrast:") );
DU(100-(contrast-40)*100/40, 3);
DC('%');
DNL();
}