Codice

1 Programma per la gestione dei semafori (led - pulsanti)

const int rosso = 8;

const int giallo = 10;

const int verde = 12;

const int rossoPedone = 5;

const int verdePedone = 7;

const int rosso2 = 9;

const int giallo2 = 11;

const int verde2 = 13;

const int rossoPedone2 = 6;

const int verdePedone2 = 2;

const int pulsantePedone = 4;

const int pulsanteSera = 3;

void setup()

{

  pinMode (rosso, OUTPUT);

  pinMode (giallo, OUTPUT);

  pinMode (verde, OUTPUT);

  pinMode (rossoPedone, OUTPUT);

  pinMode (verdePedone, OUTPUT);

  pinMode (rosso2, OUTPUT);

  pinMode (giallo2, OUTPUT);

  pinMode (verde2, OUTPUT);

  pinMode (rossoPedone2, OUTPUT);

  pinMode (verdePedone2, OUTPUT);

  pinMode (pulsantePedone, INPUT_PULLUP);

  pinMode (pulsanteSera, INPUT_PULLUP);

}

void loop()

{

  // ciclo semaforo

  digitalWrite (verde, HIGH);

  digitalWrite (verde2, HIGH);

  digitalWrite (rossoPedone, HIGH);

  digitalWrite (rossoPedone2, HIGH);

  delay (5000);

  digitalWrite (giallo, HIGH);

  digitalWrite (giallo2, HIGH);

  delay (2500);

  digitalWrite (verde, LOW);

  digitalWrite (verde2, LOW);

  digitalWrite (giallo, LOW);

  digitalWrite (giallo2, LOW);

  digitalWrite (rossoPedone, LOW);

  digitalWrite (rossoPedone2, LOW);

  digitalWrite (rosso, HIGH);

  digitalWrite (rosso2, HIGH);

  digitalWrite (verdePedone, HIGH);

  digitalWrite (verdePedone2, HIGH);

  delay (5000);

  digitalWrite (rosso, LOW);

  digitalWrite (rosso2, LOW);

  digitalWrite (verdePedone, LOW);

  digitalWrite (verdePedone2, LOW);

  if (digitalRead(pulsantePedone) == LOW) {

  digitalWrite (rosso, HIGH);

  digitalWrite (rosso2, HIGH);

  digitalWrite (rossoPedone, LOW);

  digitalWrite (rossoPedone2, LOW);

  digitalWrite (verdePedone, HIGH);

  digitalWrite (verdePedone2, HIGH);

  delay(10000);

  digitalWrite (rosso, LOW);

  digitalWrite (rosso2, LOW);

  digitalWrite (rossoPedone, HIGH);

  digitalWrite (rossoPedone2, HIGH);

  digitalWrite (verdePedone, LOW);

  digitalWrite (verdePedone2, LOW);

  }

  if (digitalRead(pulsanteSera) == LOW) {

     for (int i = 0; i < 15; i++ ) {

       digitalWrite (giallo, HIGH);

       digitalWrite (giallo2, HIGH);

       delay (500);

       digitalWrite (giallo, LOW);

       digitalWrite (giallo2, LOW);

       delay (500);

       }

  }

}

2 Programma per la gestione delle sbarre (sensore ad ultrasuoni - servomotore)

#include <Servo.h>

Servo sbarra;

const int trigPin = 9;

const int echoPin = 10;

const int servoPin = 6;

long durata;

int distanza;

void setup() {

  pinMode(trigPin, OUTPUT);

  pinMode(echoPin, INPUT);

  sbarra.attach(servoPin);

  sbarra.write(0); // sbarra abbassata

  Serial.begin(9600);

}

void loop() {

// Invio impulso ultrasuoni

  digitalWrite(trigPin, LOW);

  delayMicroseconds(2);

  digitalWrite(trigPin, HIGH);

  delayMicroseconds(10);

  digitalWrite(trigPin, LOW);

// Lettura distanza

  durata = pulseIn(echoPin, HIGH);

  distanza = durata * 0.034 / 2;

  Serial.print("Distanza: ");

  Serial.println(distanza);

// Se oggetto vicino (<5 cm), alza sbarra

  if (distanza > 0 && distanza < 5) {

    sbarra.write(90); // alza

    delay(6000);

  } else {

  sbarra.write(0); // abbassa

  }

delay(1000);

}

3 Programma per la gestione del display (display - RTC)

#include <LiquidCrystal.h>

#include <Wire.h>

#include <LiquidCrystal_I2C.h>

#include <RTClib.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

RTC_DS3231 rtc;

unsigned long previousMillis = 0;

const long interval = 8000; // 8 secondi

bool mostraOra = true;

void setup() {

  lcd.init();

  lcd.backlight();

  if (!rtc.begin()) {

    lcd.print("RTC NON TROVATO");

    while (1);

  }

  // DA USARE SOLO UNA VOLTA PER IMPOSTARE L'ORARIO

  //rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

}

void loop() {

  unsigned long currentMillis = millis();

  if (currentMillis - previousMillis >= interval) {

    previousMillis = currentMillis;

    mostraOra = !mostraOra; // alterna schermata

    lcd.clear();

  }

  if (mostraOra) {

    DateTime now = rtc.now();

    // Riga 1: Ora

    lcd.setCursor(0, 0);

    lcd.print("Ora: ");

    if (now.hour() < 10) lcd.print("0");

    lcd.print(now.hour());

    lcd.print(":");

    if (now.minute() < 10) lcd.print("0");

    lcd.print(now.minute());

    lcd.print(":");

    if (now.second() < 10) lcd.print("0");

    lcd.print(now.second());

    // Riga 2: Data

    lcd.setCursor(0, 1);

    lcd.print("Data: ");

    if (now.day() < 10) lcd.print("0");

    lcd.print(now.day());

    lcd.print("/");

    if (now.month() < 10) lcd.print("0");

    lcd.print(now.month());

    lcd.print("/");

    lcd.print(now.year());

  } else {

    // Scritta personalizzata

    lcd.setCursor(0, 0);

    lcd.print("Smart Traffic");

    lcd.setCursor(0, 1);

    lcd.print("IIS Casimiri 1B");

  }

}