Velha Ball: 6) Construção do algoritmo do jogo – Programação;

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Nesta seção estão listadas as referências, pesquisas e testes realizados durante o desenvolvimento do algoritmo/programa do jogo.

6 Comentários

  • Código fonte do programa Blink
    Lembrando que na programação do Arduino, o programa é chamado também de Sketch.
    O programa Blink está na aba File/Examples e o que ele faz é: piscar o led associado a porta digital 13.

    /*
    Blink
    Turns on an LED on for one second, then off for one second, repeatedly.

    This example code is in the public domain.
    */

    // Pin 13 has an LED connected on most Arduino boards.
    // give it a name:
    int led = 13;

    // the setup routine runs once when you press reset:
    void setup() {
    // initialize the digital pin as an output.
    pinMode(led, OUTPUT);
    }

    // the loop routine runs over and over again forever:
    void loop() {
    digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)
    delay(1000); // wait for a second
    digitalWrite(led, LOW); // turn the LED off by making the voltage LOW
    delay(1000); // wait for a second
    }

  • Sketch: Knock
    Programa exemplo do Arduino que detecta uma vibração na cápsula piezoelétrica.

    /* Knock Sensor

    This sketch reads a piezo element to detect a knocking sound.
    It reads an analog pin and compares the result to a set threshold.
    If the result is greater than the threshold, it writes
    “knock” to the serial port, and toggles the LED on pin 13.

    The circuit:
    * + connection of the piezo attached to analog in 0
    * – connection of the piezo attached to ground
    * 1-megohm resistor attached from analog in 0 to ground

    http://www.arduino.cc/en/Tutorial/Knock

    created 25 Mar 2007
    by David Cuartielles <http://www.0j0.org>
    modified 30 Aug 2011
    by Tom Igoe

    This example code is in the public domain.

    */

    // these constants won’t change:
    const int ledPin = 13; // led connected to digital pin 13
    const int knockSensor = A0; // the piezo is connected to analog pin 0
    const int threshold = 100; // threshold value to decide when the detected sound is a knock or not

    // these variables will change:
    int sensorReading = 0; // variable to store the value read from the sensor pin
    int ledState = LOW; // variable used to store the last LED status, to toggle the light

    void setup() {
    pinMode(ledPin, OUTPUT); // declare the ledPin as as OUTPUT
    Serial.begin(9600); // use the serial port
    }

    void loop() {
    // read the sensor and store it in the variable sensorReading:
    sensorReading = analogRead(knockSensor);

    // if the sensor reading is greater than the threshold:
    if (sensorReading >= threshold) {
    // toggle the status of the ledPin:
    ledState = !ledState;
    // update the LED pin itself:
    digitalWrite(ledPin, ledState);
    // send the string “Knock!” back to the computer, followed by newline
    Serial.println(“Knock!”);
    }
    delay(100); // delay to avoid overloading the serial port buffer
    }

  • Nosso primeiro problema a resolver, para a construção do programa/sketch-arduino do jogo VelhaBall, será definir como o arduino fará a leitura dos nove sensores (cápsulas piezoelétricas ). Esses sensores indicarão em qual painel das matriz a bola bateu.
    O exercício, em anexo, tem esse objetivo.
    Bom trabalho!!!

    02 – Construção do fluxograma

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