code/Barrier.cpp

@@ -24,13 +24,17 @@ class Barrier {
         }
     
         void open(){
-            this->state = OPEN;
-            this->servo.write(0);
+            if (this->state != OPEN){
+                this->state = OPEN;
+                this->servo.write(0);
+            }
         }
 
         void close(){
-            this->state = CLOSED;
-            this->servo.write(90);
+            if(this->state != CLOSED){
+                this->state = CLOSED;
+                this->servo.write(90);
+            }
         }
 
         bool is_open() const {

code/DistSensor.cpp

@@ -3,34 +3,34 @@
 class DistSensor {
 
     private:
-        int trigPin;
-        int echoPin;
+        int trig_pin;
+        int echo_pin;
         const int ULTRASONIC_CM_FACTOR = 58;
 
         void make_measurement(){
-            digitalWrite(this->trigPin, HIGH);
+            digitalWrite(this->trig_pin, HIGH);
             delayMicroseconds(10);
-            digitalWrite(this->trigPin, LOW);
+            digitalWrite(this->trig_pin, LOW);
         }
 
     public:
         int duration;
         float default_distance;
 
-        DistSensor(int trigPin, int echoPin, float default_distance){ 
-            this->trigPin = trigPin;
-            this->echoPin = echoPin;
+        DistSensor(int trig_pin, int echo_pin, float default_distance){ 
+            this->trig_pin = trig_pin;
+            this->echo_pin = echo_pin;
             this->default_distance = default_distance;
         }
 
         void configure_pins(){
-            pinMode(this->trigPin, OUTPUT);
-            pinMode(this->echoPin, INPUT);
+            pinMode(this->trig_pin, OUTPUT);
+            pinMode(this->echo_pin, INPUT);
         }
 
         int get_duration(){
             this->make_measurement();
-            this->duration = pulseIn(this->echoPin, HIGH);
+            this->duration = pulseIn(this->echo_pin, HIGH);
             return this->duration;
         }
 

code/LCDScreen.cpp

@@ -33,17 +33,22 @@ class LCDScreen {
         }
 
         void display_temperature(float temp){
-            this->state = DISPLAY_TEMPERATURE;
+            if (this->state != DISPLAY_TEMPERATURE){
+                this->clear();
+                this->state = DISPLAY_TEMPERATURE;
+            }
             lcd.setCursor(0, 0);
-            this->clear();
-            lcd.print(temp);
-            lcd.print(" C");
+            lcd.print("Temp: ");
+            lcd.print(temp,1);
+            lcd.print(" C   ");
         }
 
         void display_default_message(){
-            this->state = DISPLAY_DEFAULT_MESSAGE;
+            if (this->state != DISPLAY_DEFAULT_MESSAGE){
+                this->clear();
+                this->state = DISPLAY_DEFAULT_MESSAGE;
+            }
             lcd.setCursor(0, 0);
-            this->clear();
             lcd.print(this->default_message);
         }
 

code/code.ino

@@ -10,26 +10,26 @@
 #define ULTRASONIC_SENSOR_PIN_TRIG 11
 #define ULTRASONIC_SENSOR_PIN_ECHO 12
 #define SERVO_PIN 10
-#define SERVO_PIN 10
 #define TEMP_SENSOR_PIN 9
 #define BUTTON_PIN = 8;
 #define BUZZER_PIN = 3;
 
 OneWire oneWire(TEMP_SENSOR_PIN);
-DallasTemperature sensors(&oneWire);
+DallasTemperature temperature_sensors(&oneWire);
 
 DistSensor dist_sensor = DistSensor(ULTRASONIC_SENSOR_PIN_TRIG, ULTRASONIC_SENSOR_PIN_ECHO, 25.0);
-Barrier barrier = Barrier(SERVO_PIN, 3);
+Barrier barrier = Barrier(SERVO_PIN, 4);
 LCDScreen screen = LCDScreen();
 
 unsigned long current_time, sensor_last_time_activated, temperature_last_time_measured;
 int OCCUPIED_SLOTS = 0, Button_State = 0, Last_Button_State = 0;
+float temperature_in_c = 0;
 
 void setup() {
     Serial.begin(9600);
     dist_sensor.configure_pins();
     barrier.configure_pins();
-    sensors.begin();
+    temperature_sensors.begin();
     screen.init();
     pinMode(BUTTON_PIN, INPUT);
     pinMode(BUZZER_PIN, OUTPUT);
@@ -80,8 +80,9 @@ void loop() {
     // Temperatura:
     if (current_time - temperature_last_time_measured >= 1000){
         temperature_last_time_measured = current_time;
-        sensors.requestTemperatures();
-        float tempC = sensors.getTempCByIndex(0);
-        screen.display_temperature(tempC);
+        temperature_sensors.requestTemperatures();
+        temperature_in_c = temperature_sensors.getTempCByIndex(0);
     }
+
+    screen.display_temperature(temperature_in_c);
 }