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//
int sensorPin = A0;
int buzzerPin = 2;
int ledPinGreen = 12;
int ledPinRed = 13;
int sensorThreshold = 700;
int sensorValue = 0;
int buzzerFreq = 1600;
int beamCount = 0;
bool bCanCount = true
;int State = 0;
int LoopCount = 0;
void setup()
{
pinMode(ledPinGreen, OUTPUT);
pinMode(ledPinRed, OUTPUT);
beamCount = 0;
bCanCount = true
;State = 0;
LoopCount = 0;
}
void loop()
{
bool beamOn = false;
sensorValue = analogRead(sensorPin);
if (sensorValue < sensorThreshold)
{
digitalWrite(ledPinGreen, HIGH);
digitalWrite(ledPinRed, LOW);
tone(buzzerPin, buzzerFreq);
beamOn = true;
}
else
{
digitalWrite(ledPinGreen, LOW);
digitalWrite(ledPinRed, HIGH);
noTone(buzzerPin);
beamOn = false;
switch (State)
{
case 0: //setup
if (beamOn)
{
// light is sensed
LoopCount++;// incrament # times thrtough this loop
digitalWrite(ledPinGreen, HIGH);// green led on
digitalWrite(ledPinRed, HIGH);// red led on
}
else
{
// no light is sensed
LoopCount = 0;
digitalWrite(ledPinGreen, LOW);
digitalWrite(ledPinRed, LOW);
}
// Transition to state 1 if been through this loop a lot
if (LoopCount > 48)
{
//LIGHT HAS BEEN SENSED FOR 12 seconds
LoopCount = 0; //reset loopcount for next state
State = 1; //transfer to state 1
}
break; //end of 0 code
case 1: //TRANSITION
break
;case 2: //ARMED
break;
;default:
;
}
delay (250);
}
|
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