int main(void)
{
initIO(); //Setup LED and Button pins
timer0_overflow(); //Setup the button debounce timer
initTimer1_modes(); //Setup the delay timer
state = sweep; //Set default state
initState(state); //Setup initial state
while(1)
{
//If interrupt set the timer flag act on that
if (timer) {
switch (state)
{
case sweep:
if (direction) tracker <<= 1;
else tracker >>= 1;
if ((tracker == 0x01) | (tracker == 0x80)) direction ^= 1;
ledPort = tracker;
break;
case xor:
toggle_led();
break;
case flash:
toggle_led();
break;
case sleep:
//Arriving here means we just woke up from sleep
state = sweep; //Reset state machine
initState(state);
break;
}
timer = 0;
}
if( get_key_press( 1<<KEY0 )) {
timer1_stop(); //Halt the delay timer
timer = 0; //Clear delay timer flag
//Increment the state machine
if (++state > sleep) state = sweep;
initState(state);
}
}
}
/* PD(3) ONSWITCH_DB (PB_STAT), any change */
irqreturn_t ltc3675_button_change_irq_handler(void)
{
bool pin_state;
pin_state = io_test_pin(ONSWITCH_DB);
/* the pushbutton is active low, therefore backwards logic */
if (pin_state && !button.onswitch_last_state) {
button.onswitch_release_event = true;
timer1_stop();
} else if (!pin_state && button.onswitch_last_state) {
button.onswitch_press_event = true;
timer1_start();
}
button.onswitch_last_state = pin_state;
return IRQ_HANDLED;
}
void interrupt ISR(){
static int blinkCounter =0;
//Timer 0 Overflow - Filter for LVL One
if(TMR0IF && TMR0IE){
switch(blinkState)
{
case FILTER_BLINK_FAST:
if((blinkCounter % 5) == 0)
{
LEDPORT ^= ALMLED;
}
break;
case ALARM_BLINK_SLOW:
if((blinkCounter % 15) == 0)
{
LEDPORT ^= ALMLED;
}
break;
case ALARM_SOLID_ON:
LEDPORT |= ALMLED;
break;
case LIGHTS_OFF:
default:
LEDPORT &= ~(ALMLED);
}
blinkCounter ++;
blinkCounter %= 1000;
TMR0IF = 0;
}
//Timer 1 Overflow
if(TMR1IE && TMR1IF){
switch(theAlarm.ALARM_STATE){
case ALARM_ON:
theAlarm.current_value += 1;
break;
case ALARM_DOUBLE_TIME:
theAlarm.current_value += 3;
break;
case ALARM_FINAL_STATE:
default:
timer1_stop();
}
TMR1IF = 0;
}
//Timer 2 Overflow - Filter Counter for both Sensors
if(TMR2IF && TMR2IE){
if(levelSensors[0].LEVEL_STATE == TRANSITION_TO_EMPTY || levelSensors[0].LEVEL_STATE == TRANSITION_TO_FULL){ //Transition States
levelSensors[0].counter++;
}
if(levelSensors[1].LEVEL_STATE == TRANSITION_TO_EMPTY || levelSensors[1].LEVEL_STATE == TRANSITION_TO_FULL){ //Transition States
levelSensors[1].counter++;
}
TMR2IF = 0;
}
//ADC Interrupt Flag
if(ADIF && ADIE){
theAlarm.trigger_value = ADRESH;
ADIF = 0;
}
}
