/*
* Initialize the LCD controller.
*
* The initialization sequence has a mandatory timing so the
* controller can safely recognize the type of interface desired.
* This is the only area where timed waits are really needed as
* the busy flag cannot be probed initially.
*/
void
hd44780_init(void)
{
DDRB = 0xFF; // Data port out
DDRD = 0xF2; // (comment was obsolete)
_delay_ms(15); /* 40 ms needed for Vcc = 2.7 V */
hd44780_outcmd(HD44780_FNSET(1, 0, 0));
_delay_ms(4.1);
hd44780_outcmd(HD44780_FNSET(1, 0, 0));
_delay_ms(0.1);
hd44780_outcmd(HD44780_FNSET(1, 0, 0));
hd44780_outcmd(HD44780_FNSET(1, 1, 0));
hd44780_wait_ready();
hd44780_outcmd(HD44780_FNSET(1, 1, 0));
hd44780_wait_ready();
hd44780_outcmd(HD44780_DISPCTL(0, 0, 0));
hd44780_wait_ready();
}
/*
* Initialize the LCD controller.
*
* The initialization sequence has a mandatory timing so the
* controller can safely recognize the type of interface desired.
* This is the only area where timed waits are really needed as
* the busy flag cannot be probed initially.
*/
void
hd44780_init(void)
{
SET(DDR, HD44780_RS);
SET(DDR, HD44780_RW);
SET(DDR, HD44780_E);
ASSIGN(DDR, HD44780_D8, 0xFF);
_delay_ms(150); /* 40 ms needed for Vcc = 2.7 V */
hd44780_outbyte(HD44780_FNSET(1, 0, 0), 0);
_delay_ms(41);
hd44780_outbyte(HD44780_FNSET(1, 0, 0), 0);
_delay_ms(1);
hd44780_outbyte(HD44780_FNSET(1, 0, 0), 0);
_delay_us(370);
hd44780_outcmd(HD44780_FNSET(1, 1, 0));
hd44780_wait_ready(false);
hd44780_outcmd(HD44780_DISPCTL(0, 0, 0));
hd44780_wait_ready(false);
}
