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Proyecto_1.ino
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Proyecto_1.ino
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#include <Servo.h>
#define PIN_BARRIER_SERVO 5
#define PIN_PEDESTRIAN_SENSOR A5
#define PIN_GREEN_LED A0
#define PIN_RED_LED A1
#define TRIGGER_PIN 2
#define ECHO_PIN 4
#define SOUND_PIN 3
#define STATE_VEHICULES 0
#define STATE_TRAIN 1
#define STATE_PEDESTRIANS 2
#define STATE_VEHICULES_TO_TRAIN 3
#define STATE_VEHICULES_TO_PEDESTRIANS 4
#define STATE_PEDESTRIANS_TO_TRAIN 5
#define STATE_PEDESTRIANS_TO_VEHICULES 6
#define STATE_TRAIN_TO_VEHICULES 7
#define STATE_TRAIN_TO_PEDESTRIANS 8
#define DISTANCE_MAX_READS 10
Servo myservo;
byte state = STATE_VEHICULES;
byte lastState = STATE_VEHICULES;
int lastDigit = 9;
unsigned long previousMillisGreenLight = 0;
unsigned long previousMillisPedestrians = 0;
unsigned long previousMillisDisplay = 0;
bool lastGreenLight = false;
bool pedestriansCooldown = false;
bool pedestrialsSignalWhileTrain = false;
void setup(){
Serial.begin(9600);
pinMode(PIN_PEDESTRIAN_SENSOR, INPUT);
myservo.attach(PIN_BARRIER_SERVO);
pinMode(PIN_RED_LED, OUTPUT);
pinMode(PIN_GREEN_LED, OUTPUT);
pinMode(TRIGGER_PIN, OUTPUT);
pinMode(ECHO_PIN, INPUT);
openBarrier();
redTrafficLight();
measurementsInit();
}
void loop(){
if (lastState != state) {
displayState();
lastState = state;
}
bool isTrain = false;
switch (state)
{
case STATE_VEHICULES:
isTrain = checkTrain();
if (isTrain)
state = STATE_VEHICULES_TO_TRAIN;
else if (checkPedestrians())
state = STATE_VEHICULES_TO_PEDESTRIANS;
break;
case STATE_PEDESTRIANS:
isTrain = checkTrain();
if (isTrain)
state = STATE_PEDESTRIANS_TO_TRAIN;
else {
doPedestriansSignals();
if (endPedestriansTime())
state = STATE_PEDESTRIANS_TO_VEHICULES;
}
break;
case STATE_TRAIN:
isTrain = checkTrain();
if (isTrain && checkPedestrians())
pedestrialsSignalWhileTrain = true;
else if (!isTrain) {
if (checkPedestrians() || pedestrialsSignalWhileTrain) {
state = STATE_TRAIN_TO_PEDESTRIANS;
pedestrialsSignalWhileTrain = false;
} else
state = STATE_TRAIN_TO_VEHICULES;
}
break;
case STATE_VEHICULES_TO_PEDESTRIANS:
outVehiculesState();
inPedestriansState();
state = STATE_PEDESTRIANS;
break;
case STATE_PEDESTRIANS_TO_VEHICULES:
outPedestriansState();
inVehiculesState();
state = STATE_VEHICULES;
break;
case STATE_VEHICULES_TO_TRAIN:
outVehiculesState();
inTrainState();
state = STATE_TRAIN;
break;
case STATE_TRAIN_TO_PEDESTRIANS:
outTrainState();
inPedestriansState();
state = STATE_PEDESTRIANS;
break;
case STATE_TRAIN_TO_VEHICULES:
outTrainState();
inVehiculesState();
state = STATE_VEHICULES;
break;
case STATE_PEDESTRIANS_TO_TRAIN:
outPedestriansState();
inTrainState();
state = STATE_TRAIN;
break;
}
delay(100);
}
void outVehiculesState() {
}
void inVehiculesState() {
openBarrier();
redTrafficLight();
}
void inPedestriansState() {
closeBarrier();
greenTrafficLight(false);
beep(false);
}
void outPedestriansState() {
}
void inTrainState() {
closeBarrier();
redTrafficLight();
}
void outTrainState() {
delay(2000);
}
void doPedestriansSignals() {
counter(false);
beep(false);
if (lastDigit < 5 ) {
greenTrafficLight(true);
beep(true);
}
}
bool endPedestriansTime() {
if (lastDigit < 0) {
lastDigit = 9;
pedestriansCooldown = true;
return true;
}
return false;
}
bool checkPedestrians() {
//checks the pedestrians button
bool pressed = digitalRead(PIN_PEDESTRIAN_SENSOR) == HIGH;
if (pressed) {
long elapsed = (millis() - previousMillisPedestrians);
Serial.println(String("pressed") + " elapsed:" + elapsed);
if (elapsed > 18000 || previousMillisPedestrians == 0) {
previousMillisPedestrians = millis();
return true;
} else
return false;
}
return false;
}
bool checkTrain() {
//checks the train sensor
if (measureMedia() < 10) {
Serial.println("Train happens");
return true;
}
return false;
}