Week 8

Embedded Programming

This week was a good introduction to Arduino and programming in C to learn how to make a board do something. Here are three quick examples of what I could do!

This week, I used Arduino to program my board. I found it to be pretty simple and intuitive to get around the environment, and it required relatively little effort to program the board.

First, I connected my board from two weeks ago to my own ISP, but it didn't work. I instead used Will's AVRISP mkII.

I set the board, processor, clock, and port (on Macs, you need to download a separate driver to find the port).

Finally, I found some code, played around and tried to get new things to happen. Here are some examples of what I have done!

                        int ledPin =  7;      // the number of the LED pin
int bPin = 2;
int bState = 0;


void setup() {
  // set the digital pin as output:
  pinMode(ledPin, OUTPUT);
  pinMode(bPin, INPUT);
  digitalWrite(bPin, HIGH);
}

void loop() {
  bState = digitalRead(bPin);

  if(bState == HIGH){
    digitalWrite(ledPin, LOW);
  }

else{
  digitalWrite(ledPin, HIGH);
}
}

                       
int ledPin =  7;      // the number of the LED pin
int bPin = 2;
int bState = 0;
int brightness = 0; // how bright the LED is
int fadeAmount = 3; // how many points to fade the LED by

void setup() {
  // set the digital pin as output:
  pinMode(ledPin, OUTPUT);
  pinMode(bPin, INPUT);
  digitalWrite(bPin, HIGH);
}

void loop() {
  bState = digitalRead(bPin);

  if(bState == HIGH){
     analogWrite(ledPin, brightness);
 // change the brightness for next time through the loop:
 brightness = brightness + fadeAmount;
 // reverse the direction of the fading at the ends of the fade:
 if (brightness == 0 || brightness == 255) {
 fadeAmount = -fadeAmount ;
 }
 // wait for 30 milliseconds to see the dimming effect
 delay(30);
  }

else{
  digitalWrite(ledPin, LOW);
// if button is pressed, then LED is off 
}
}

                      
int ledPin =  7;      // the number of the LED pin
int bPin = 2;
int bState = 0;
int randomNum = 0;

void setup() {
  // set the digital pin as output:
  pinMode(ledPin, OUTPUT);
  pinMode(bPin, INPUT);
  digitalWrite(bPin, HIGH);
  
}

void loop() {

  if(digitalRead(bPin) == LOW){
     analogWrite(ledPin, randomNum);
  }

  if(digitalRead(bPin) == HIGH){
  randomNum = random(0,255);
// if button is pressed, then LED is off 
}
}

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