Adapt this Arduino code to function in the same way in MATLAB. This Arduino code is from ParkFun Electronics, and the goal is to use 3 buttons plugged to play musical notes on a buzzer. The code is SIK_Circuit_2B-DigitalTrumpet

//set the pins for the button and buzzer int firstKeyPin = 2; int secondKeyPin = 3; int thirdKeyPin = 4;

int buzzerPin = 10;

void setup() { //set the button pins as inputs pinMode(firstKeyPin, INPUT_PULLUP); pinMode(secondKeyPin, INPUT_PULLUP); pinMode(thirdKeyPin, INPUT_PULLUP);

//set the buzzer pin as an output pinMode(buzzerPin, OUTPUT); }

void loop() {

if (digitalRead(firstKeyPin) == LOW) { //if the first key is pressed tone(buzzerPin, 262); //play the frequency for c; 262Hz } else if (digitalRead(secondKeyPin) == LOW) { //if the second key is pressed tone(buzzerPin, 330); //play the frequency for e; 330Hz } else if (digitalRead(thirdKeyPin) == LOW) { //if the third key is pressed tone(buzzerPin, 392); //play the frequency for g; 392Hz } else { noTone(buzzerPin); //if no key is pressed turn the buzzer off } }

The way the Arduino board (its an Uno), is:

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