int main(void)
{
// Enable pin change interrupt for pulse input
PCMSK3 |= _BV(PCINT28);
PCICR |= _BV(PCIE3);
// Enable pullup resistor on unused pins
PORTA = 0xFF;
// Set millisecond-timer period to 1ms
OCR1A = 9999;
STOP_MILLISECOND_TIMER;
TIMSK1 |= _BV(OCIE1A);
// Set other init
usb_initialize();
camera_initialize();
display_initialize();
// Enable relay mode until reboot
if (eeprom_read_byte(RELAY_EEPROM_OFFSET) == RELAY_ENABLED)
{
set_timer_status(TIMER_RELAY);
eeprom_update_byte(RELAY_EEPROM_OFFSET, RELAY_DISABLED);
}
// Enable interrupts
sei();
gps_initialize();
// Main program loop
for (;;)
{
// Handle message flags set via interrupt
if (message_flags && timer_status != TIMER_RELAY)
{
uint8_t temp_int_flags = 0;
ATOMIC_BLOCK(ATOMIC_FORCEON)
{
temp_int_flags = message_flags;
message_flags = 0;
}
if (temp_int_flags & FLAG_SEND_TRIGGER)
usb_send_trigger();
if (temp_int_flags & FLAG_SEND_TIMESTAMP)
usb_send_timestamp();
if (temp_int_flags & FLAG_SEND_STATUS)
usb_send_status(timer_status, gps_status);
if (temp_int_flags & FLAG_STOP_EXPOSURE)
usb_stop_exposure();
if (temp_int_flags & FLAG_DUPLICATE_PULSE)
usb_send_message_P(msg_duplicate_pulse);
if (temp_int_flags & FLAG_MISSING_PULSE)
usb_send_message_P(msg_missing_pulse);
if (temp_int_flags & FLAG_TIME_DRIFT)
usb_send_message_fmt_P(fmt_time_drift, millisecond_drift);
}
camera_tick();
usb_tick();
gps_tick();
display_update();
}
static void usb_setup_get_device_status(void)
{
setup_out_buf[0] = (usb_remote_wakeup != 0) ? 2 : 0;
setup_out_buf[1] = 0;
usb_send_status();
}