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smukkejohan/main.cpp

Created September 24, 2019 08:43
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  1. smukkejohan created this gist Sep 24, 2019.
    104 changes: 104 additions & 0 deletions main.cpp
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,104 @@
    #include <Arduino.h>

    int buttonPin = 2;
    int ledPin = 13;

    int buttonState = HIGH;
    int lastButtonState = LOW;

    int ledState = LOW;
    bool blinkFast = true;

    unsigned long fastBlinkInterval = 100;
    unsigned long slowBlinkInterval = 600;

    unsigned long elapsedTimeInMillis = 0;
    unsigned long lastBlinkTime = 0;

    unsigned long lastDebounceTime = 0;
    unsigned long debounceDelay = 20;



    void setup() {
    Serial.begin(9600);

    // put your setup code here, to run once:
    pinMode(buttonPin, INPUT_PULLUP);
    pinMode(ledPin, OUTPUT);

    while(!Serial) {
    ;
    }
    Serial.println("Hej HEJ!");
    }

    // logical operators:
    // != NOT -> er det ikke det samme
    // == COMPARISON -> er det det samme
    // && og
    // || eller
    // < mindre end
    // støre
    // ++ = +1
    // --
    // var = nyvar ASSIGNMENT
    // += assignment + værdi
    // -= assignment - værdi
    /*int mitTal = 4;
    mitTal += 2;
    mitTal = mitTal + 2;
    */

    void loop() {
    // put your main code here, to run repeatedly:

    elapsedTimeInMillis = millis();


    int buttonReading = digitalRead(buttonPin);

    if(buttonReading != lastButtonState) {
    //buttonState = buttonReading;
    lastDebounceTime = elapsedTimeInMillis;
    }

    if( (elapsedTimeInMillis - lastDebounceTime) > debounceDelay ) {
    // er der gået mere end 2 millissekunder siden sidste ændring
    if(buttonReading != buttonState) {
    buttonState = buttonReading;
    if(buttonState) {
    blinkFast = !blinkFast;
    }
    Serial.print("buttonState: ");
    Serial.print(buttonState);
    Serial.print(" blinkFast: ");
    Serial.println(blinkFast);
    }
    }

    lastButtonState = buttonReading;

    if(blinkFast) {
    // blink hurtigt

    if((elapsedTimeInMillis - lastBlinkTime) > fastBlinkInterval ) {
    ledState = !ledState;
    lastBlinkTime = elapsedTimeInMillis;
    }
    // gem interval mellem blink
    // hvis tid der er gået siden led sidst
    // tændte eller slukkede er større end interval
    // så tænd eller sluk

    } else {
    // blink langsomt
    if((elapsedTimeInMillis - lastBlinkTime) > slowBlinkInterval ) {
    ledState = !ledState;
    lastBlinkTime = elapsedTimeInMillis;
    }
    }

    digitalWrite(ledPin, ledState);

    }