/*
* Send character c to the LCD display. After a '\n' has been seen,
* the next character will first clear the display.
*/
int
lcd_putchar(char c, FILE *unused)
{
static bool nl_seen;
if (nl_seen && c != '\n')
{
/*
* First character after newline, clear display and home cursor.
*/
hd44780_wait_ready();
hd44780_outcmd(HD44780_CLR);
hd44780_wait_ready();
hd44780_outcmd(HD44780_HOME);
hd44780_wait_ready();
hd44780_outcmd(HD44780_DDADDR(0));
nl_seen = false;
}
if (c == '\n')
{
nl_seen = true;
}
else
{
hd44780_wait_ready();
hd44780_outdata(c);
}
return 0;
}
/*
* Setup the LCD controller. First, call the hardware initialization
* function, then adjust the display attributes we want.
*/
void
lcd_init(void)
{
hd44780_init();
/*
* Clear the display.
*/
hd44780_outcmd(HD44780_CLR);
hd44780_wait_ready();
/*
* Entry mode: auto-increment address counter, no display shift in
* effect.
*/
hd44780_outcmd(HD44780_ENTMODE(1, 0));
hd44780_wait_ready();
/*
* Enable display, activate non-blinking cursor.
*/
hd44780_outcmd(HD44780_DISPCTL(1, 1, 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)
{
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);
}
/** Inicjalizacja urządzeń wejścia / wyjścia.
*/
void ioinit(void)
{
uint8_t i;
hd44780_init();
hd44780_outcmd(HD44780_CLR);
hd44780_wait_ready();
hd44780_outcmd(HD44780_ENTMODE(1, 0));
hd44780_wait_ready();
hd44780_outcmd(HD44780_DISPCTL(1, 1, 1));
hd44780_wait_ready();
hd44780_outcmd(HD44780_CGADDR(0));
for(i=0; i<64; i++) {
hd44780_outdata(pgm_read_byte(&extraChar[i]));
}
TCCR1B = _BV(WGM12) | _BV(CS11); // licznik / 8 - wyzerwoanie na porownanie
TIMSK = _BV(OCIE1A); // przerwanie na porownanie wartosci
OCR1A = TAU1; // warto licznika porownania
usart_init(UBRR_VALUE);
onewire_init();
twi_init();
outputs_init();
top_off_init();
qbuttons_init();
ui_init();
BUZZER_DDR |= _BV(BUZZER_SWITCH);
buzzer_off();
wdt_enable(WDTO_2S);
}
int main()
{
hd44780_init();
/*
* Clear the display.
*/
hd44780_outcmd(HD44780_CLR);
hd44780_wait_ready(1); // long wait
/*
* Entry mode: auto-increment address counter, no display shift in effect.
*/
hd44780_outcmd(HD44780_ENTMODE(1, 0));
hd44780_wait_ready(0);
/*
* Enable display, activate non-blinking cursor.
*/
hd44780_outcmd(HD44780_DISPCTL(1, 1, 0));
hd44780_wait_ready(0);
EICRA = (1 << ISC00);
EIMSK = (1 << INT0);
sei();
while (1) {
while (!update_needed)
sleep_mode();
update_needed = 0;
char buffer[16];
hd44780_outcmd(HD44780_CLR);
hd44780_wait_ready(1); // long wait
hd44780_outcmd(HD44780_DDADDR(4));
hd44780_wait_ready(0);
sprintf(buffer, "%2d:%02d:%02d", hour, minute, second);
char *s = buffer;
while (*s) {
hd44780_outdata(*s++);
hd44780_wait_ready(0);
}
}
}
void lcd_clear()
{
hd44780_outcmd(HD44780_CLR);
hd44780_wait_ready();
}
