/**
* State machine for menu and display
*/
void run_states(uint8_t state, s_time* time) {
// State machine zum Ändern der Uhrzeit
switch (0xf0 & state) {
case STATE_MENU_SECOND:
set_all_leds(1);
if (b_pressed()) {
add_second(time, 0);
}
display_seconds(*time);
break;
case STATE_MENU_MINUTE:
set_all_leds(1);
if (b_pressed()) {
add_minute(time, 0);
}
display_minutes(*time);
break;
case STATE_MENU_HOUR:
set_all_leds(1);
if (b_pressed()) {
add_hour(time);
}
display_hours(*time);
break;
case STATE_NONE:
set_all_leds(0);
#ifdef WITH_ENLIGHT
if (enlight > 0) {
#endif
display_seconds(*time);
display_minutes(*time);
display_hours(*time);
#ifdef WITH_ENLIGHT
enlight--;
}
#endif
add_second(time, 1);
break;
}
}
/**
* main function
*/
int main(int argc, char **argv) {
// initialisiere alle Werte
state = STATE_NONE;
enlight = 10;
time.hour = 1;
time.minute = 0;
time.second = 0;
// Ausgänge für Stundenzeiger
DDR_HOUR |= PORTMASK_HOUR;
// Ausgänge für Minutenzeiger
DDR_MINUTE |= PORTMASK_MINUTE;
// Ausgänge für Sekundenzeiger
DDR_SECOND |= PORTMASK_SECOND;
// Eingänge für Menütaster, aktiviere Pullups
DDRD &= ~(1 << PORTD2 | 1 << PORTD3);
PORTD |= (1 << PORTD2 | 1 << PORTD3);
// timer initialisieren
init_timer();
while (1) {
// State machine zum Ändern der Uhrzeit
run_states(state, &time);
wait_a_second();
// Prüfe ob Menuetaste gedrückt wurde und ändere Status
if (a_pressed()) {
state += 0x10;
if ((state & 0xf0) == STATE_MENU_END) {
state = STATE_NONE;
}
}
#ifdef WITH_ENLIGHT
// schalte die Uhrzeitanzeige an.
if (b_pressed()) {
enlight = 10;
}
#endif
}
}
/* Returns 1 if any of the 8 GameBoy keys are being held down,
* 0 otherwise */
int key_pressed() {
return down_pressed() || up_pressed() || left_pressed() || right_pressed()
|| a_pressed() || b_pressed() || start_pressed() || select_pressed();
}
