Arquivo mensal: Maio 2015

Semáforo em Arduino

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Esta é uma solução possível para o problema do Semáforo aqui proposto.

Para além da classe Button anteriormente já apresentada, nesta solução foram criadas 3 outras classes (Semaforo, Normal e Blink), todas definidas no ficheiro semaforo.h:

// Only modify this file to include
// - function definitions (prototypes)
// - include files
// - extern variable definitions
// In the appropriate section

#ifndef _semaforo_H_
#define _semaforo_H_
#include "Arduino.h"
//add your includes for the project semaforo here

//end of add your includes here
#ifdef __cplusplus
extern "C" {
#endif
void loop();
void setup();
#ifdef __cplusplus
} // extern "C"
#endif

//add your function definitions for the project semaforo here

#define Bp 12
#define Bi 11
#define Lg 3
#define Ly 5
#define Lr 6

#define S_NORMAL 0
#define S_BLINK 1

#define S_ON 0
#define S_OFF 1

#define S_LG 0
#define S_LY 1
#define S_LR 2

class Normal {
public:
    void begin();
    void proc();
private:
    int state;
    long unsigned time;
    bool flag;
};

class Blink {
public:
    void begin();
    void proc();
private:
    int state;
    long unsigned time;
};

class Semaforo {
public:
    Semaforo();
    void proc();
private:
    int state;
    Normal normal;
    Blink blink;
};

//Do not add code below this line
#endif /* _semaforo_H_ */

O ficheiro semaforo.cpp será o seguinte:

// Do not remove the include below
#include "semaforo.h"
#include "button.h"

Semaforo fsm;
Button butBi(Bi);
Button butBp(Bp);

//The setup function is called once at startup of the sketch
void setup()
{
// Add your initialization code here
    Serial.begin(115200);
}

// The loop function is called in an endless loop
void loop()
{
    butBi.proc();
    butBp.proc();
    fsm.proc();
}

Semaforo::Semaforo() {
    pinMode(Lr, OUTPUT);
    pinMode(Ly, OUTPUT);
    pinMode(Lg, OUTPUT);

    digitalWrite(Lr, LOW);
    digitalWrite(Ly, LOW);
    digitalWrite(Lg, LOW);

    state = S_NORMAL;
    normal.begin();
}

void Semaforo::proc() {
    switch (state) {
    case S_NORMAL:
        normal.proc();
        if (butBi.clicked()) {
            state = S_BLINK;
            blink.begin();
        }
        break;
    case S_BLINK:
        blink.proc();
        if (butBi.clicked()) {
            state = S_NORMAL;
            normal.begin();
        }
        break;
    }
}

void Normal::begin() {
    digitalWrite(Lg, HIGH);
    digitalWrite(Ly, LOW);
    digitalWrite(Lr, LOW);

    state = S_LG;
    flag = false;
    time = millis();
    Serial.println("LG");
}

void Normal::proc() {
    long unsigned t;

    switch (state) {
    case S_LG:
        if (butBp.clicked())
            flag = true;
        t = millis() - time;
        if ((t > 9000) or (flag and (t > 4000))) {
            time = millis();
            state = S_LY;
            digitalWrite(Lg, LOW);
            digitalWrite(Ly, HIGH);
            Serial.println("LY");
        }
        break;
    case S_LY:
        if (millis() - time > 1000) {
            time += 1000;
            state = S_LR;
            digitalWrite(Ly, LOW);
            digitalWrite(Lr, HIGH);
            Serial.println("LR");
        }
        break;
    case S_LR:
        if (millis() - time > 5000) {
            time += 5000;
            state = S_LG;
            digitalWrite(Lr, LOW);
            digitalWrite(Lg, HIGH);
            flag = false;
            Serial.println("LG");
        }
        break;
    }
}

void Blink::begin() {
    digitalWrite(Lg, LOW);
    digitalWrite(Ly, HIGH);
    digitalWrite(Lr, LOW);

    state = S_ON;
    time = millis();
    Serial.println("ON");
}

void Blink::proc() {
    switch (state) {
    case S_ON:
        if (millis() - time > 1000) {
            time += 1000;
            state = S_OFF;
            digitalWrite(Ly, LOW);
            Serial.println("OFF");
        }
        break;
    case S_OFF:
        if (millis() - time > 1000) {
            time += 1000;
            state = S_ON;
            digitalWrite(Ly, HIGH);
            Serial.println("ON");
        }
        break;
    }
}