IDeATe

Outcome

Intention

Write about the big ideas behind your project? What are the goals? Why did you make it? What are your motivations?

Version 0 - Passing in a "HIGH" string will turn on the orange LED; passing in a "LOW" string will turn off the orange LED. See demo video: https://drive.google.com/file/d/1dqj0dsoVUYIw0fpd4gcAhik4_wF0J-ig/view?usp=share_link

Version 1 - On the basis of Version 0, the LED will blink 3 times before it is turned on/off. See demo video: https://drive.google.com/file/d/1GNsxG6njzVvX49DPNpF38gPeqI2JPiec/view?usp=share_link

Version 2 - Passing in a number, the LED will blink the passed-in number of times. See demo video (passing in 3): https://drive.google.com/file/d/1GSuFfpTnzFkQWIJe60ZTxAa68LWQynvf/view?usp=share_link

Version 3 - On the basis of Version 2, two LEDs will alternate to blink, each blinks the passed-in number of times. See demo video (passing in 5): https://drive.google.com/file/d/1-QLkOcKkAvCAHAop8h1uesgGowwv_v0_/view?usp=share_link

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Process

Describe the process you underwent to reach the outcome (problems encountered, how you resolved them, as well as, experiments, hacks, tests, refinements, iterations, failures)

Firstly, I was not familiar with the syntax used in Particle, so I searched "for loop" in Particle Docs and found a syntax reference: https://docs.particle.io/reference/device-os/api/language-syntax/control-structures/#for. This was very helpful as it included all basic syntax like if-else condition, operators, loops, and etc.

When I tested my code for version 1 (blinking 3 times before LED on/off), it only blinked once. Then I realized that I did not put delay(500) at the end of the for loop, so the LED was quickly turned off and back on that human eyes could not notice.

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Reflection

Reflect on the process of making this project. What did you learn? What would you do differently?
I would say a difficulty that remains is that I cannot "print" variables' values when the code is running so it is harder to debug. I wonder if there's a way to track down which step went wrong.
I also learned that it is helpful to save multiple versions of code so I can reference back when coding for new exercises.
Verify is a very useful tool in the online IDE. Being used to python, I tend to omit the semicolon at the end of each row, and the verify feature saves me all the time.

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// version 0
// Passing in a "HIGH" string will turn on the orange LED; passing in a "LOW" string will turn off the orange LED

int ledPinOr = D2;


void setup() {
    //Register our Particle function here
    Particle.function("ledControl", ledControl);
    
    // configure the pins to be outputs
    pinMode(ledPinOr, OUTPUT);
    
    // initialize both the LEDs to be OFF
    digitalWrite(ledPinOr, LOW);

}

void loop() {
}

int ledControl(String command) {
    int state = LOW;
    
    // find out the state of the LED
    if (command == "HIGH") {
        state = HIGH;
    } else if (command == "LOW") {
        state = LOW;
    } else {
        return -1;
    }
    
    // write to the appropriate pin
    digitalWrite(ledPinOr, state);
    return 1;
}

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// version 1  
// On the basis of Version 0, the LED will blink 3 times before it is turned on/off

int ledPinOr = D2;


void setup() {
    //Register our Particle function here
    Particle.function("ledControl", ledControl);
    
    // configure the pins to be outputs
    pinMode(ledPinOr, OUTPUT);
    
    // initialize both the LEDs to be OFF
    digitalWrite(ledPinOr, LOW);

}

void loop() {
}

int ledControl(String command) {
    int state = LOW;
    
    // find out the state of the LED
    if (command == "HIGH") {
        state = HIGH;
    } else if (command == "LOW") {
        state = LOW;
    } else {
        return -1;
    }
    
    // write to the appropriate pin
    digitalWrite(ledPinOr, LOW);
    for (int i = 1; i <= 3; i++) {
    digitalWrite(ledPinOr, HIGH);
    delay(500);
    digitalWrite(ledPinOr, LOW);
    delay(500);
    }
    digitalWrite(ledPinOr, state);
    
    return 1;
}

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// version 2
// Passing in a number, the LED will blink the passed-in number of times

int ledPinOr = D2;


void setup() {
    //Register our Particle function here
    Particle.function("ledControl", ledControl);
    
    // configure the pins to be outputs
    pinMode(ledPinOr, OUTPUT);
    
    // initialize both the LEDs to be OFF
    digitalWrite(ledPinOr, LOW);

}

void loop() {
}

int ledControl(String command) {
    
    // find out the state of the LED
    int value = command.toInt();

    if( value > 0 ) {
        for (int i = 1; i <= value; i++) {
            digitalWrite(ledPinOr, HIGH);
            delay(500);
            digitalWrite(ledPinOr, LOW);
            delay(500);
        }
    } 
    else {
        return -1;
    }

    return 1;
}

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// version 3
// On the basis of Version 2, two LEDs will alternate to blink, each blinks the passed-in number of times

int ledPinOr = D2;
int ledPinBl = D4;


void setup() {
    //Register our Particle function here
    Particle.function("ledControl", ledControl);
    
    // configure the pins to be outputs
    pinMode(ledPinOr, OUTPUT);
    pinMode(ledPinBl, OUTPUT);
    
    // initialize both the LEDs to be OFF
    digitalWrite(ledPinOr, LOW);
    digitalWrite(ledPinBl, LOW);

}

void loop() {
}

int ledControl(String command) {
    
    // find out the state of the LED
    int value = command.toInt();

    if( value > 0 ) {
        for (int i = 1; i <= value; i++) {
            digitalWrite(ledPinOr, HIGH);
            digitalWrite(ledPinBl, LOW);
            delay(500);
            digitalWrite(ledPinOr, LOW);
            digitalWrite(ledPinBl, HIGH);
            delay(500);
        }
        digitalWrite(ledPinBl, LOW);
    } 
    else {
        return -1;
    }

    return 1;
}

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Outcome

Intention

Process

Reflection

Attribution

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Attribution

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