104 lines
3.2 KiB
C++
Executable File
104 lines
3.2 KiB
C++
Executable File
//Use pushbotton as a toggle switch.
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//When the pushbotton is pressed, the pushbotton pin reads a
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//high voltage and then a low voltage, and then ledOn is set
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//to the opposite of its current value (either false or true).
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//Based on Starter Kit Project 02.
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#include "pitches.h"
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const int piezoPin = 12; //piezo
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const int rPin = 5; //red LED
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const int gPin = 4; //green LED
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const int bPin = 3; //blue LED
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const int pPin = 2; //pushbutton
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int ledState = 0;
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int ledOn = false;
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// notes
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int melody[] = {
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NOTE_F5,NOTE_D5,NOTE_AS4,NOTE_D5,NOTE_F5,NOTE_AS5,NOTE_D6,NOTE_C6,NOTE_AS5,NOTE_D5,NOTE_E5,NOTE_F5,
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NOTE_F5,NOTE_F5,NOTE_D6,NOTE_C6,NOTE_AS5,NOTE_A5,NOTE_G5,NOTE_A5,NOTE_AS5,NOTE_AS5,NOTE_F5,NOTE_D5,NOTE_AS4,
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NOTE_D6,NOTE_D6,NOTE_D6,NOTE_DS6,NOTE_F6,NOTE_F6,NOTE_DS6,NOTE_D6,NOTE_C6,NOTE_D6,NOTE_DS6,NOTE_DS6,
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0,NOTE_DS6,NOTE_D6,NOTE_C6,NOTE_AS5,NOTE_A5,NOTE_G5,NOTE_A5,NOTE_AS5,NOTE_D5,NOTE_E5,NOTE_F5,
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NOTE_F5,NOTE_AS5,NOTE_AS5,NOTE_AS5,NOTE_A5,NOTE_G5,NOTE_G5,NOTE_G5,NOTE_C6,NOTE_DS6,NOTE_D6,NOTE_C6,NOTE_AS5,NOTE_AS5,NOTE_A5,
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NOTE_F5,NOTE_F5,NOTE_AS5,NOTE_C6,NOTE_D6,NOTE_DS6,NOTE_F6,NOTE_AS5,NOTE_C6,NOTE_D6,NOTE_DS6,NOTE_C6,NOTE_AS5
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};
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// durations: 2 = half note, and 8/3,4,6,8,12. It appears that 8/2.9 is more accurate than 8/3.
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float noteDurations[] = {
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6,12,4,4,4,2,6,12,4,4,4,2,
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8,8,8/2.9,8,4,2,8,8,4,4,4,4,4,
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6,12,4,4,4,2,8,8,4,4,4,2,
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8,8,8/2.9,8,4,2,8,8,4,4,4,2,
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4,4,4,8,8,4,4,4,4,8,8,8,8,4,4,
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8,8,8/2.9,8,8,8,2,8,8,4,4,4,2
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};
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// calculates the number of elements in the melody array.
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int musicLength=sizeof(melody)/sizeof('NOTE_F5');
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void setup() {
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pinMode(pPin, INPUT);
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pinMode(rPin, OUTPUT);
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pinMode(gPin, OUTPUT);
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pinMode(bPin, OUTPUT);
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}
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void loop() {
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int pPinState=digitalRead(pPin);
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if(pPinState==HIGH) {
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ledState = 1;
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}
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if (pPinState==LOW and ledState ==1) {
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ledState = 2;
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ledOn = not ledOn;
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}
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if (ledOn && pPinState!=HIGH) {
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for (int thisNote = 0; thisNote < musicLength; thisNote++) {
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// blink the three LEDs in sequence
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if (thisNote%3==0){
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digitalWrite(rPin, HIGH);
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digitalWrite(gPin, LOW);
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digitalWrite(bPin, LOW);
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}
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else if (thisNote%3==1){
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digitalWrite(rPin, LOW);
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digitalWrite(gPin, HIGH);
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digitalWrite(bPin, LOW);
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}
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else if (thisNote%3==2){
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digitalWrite(rPin, LOW);
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digitalWrite(gPin, LOW);
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digitalWrite(bPin, HIGH);
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}
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// calculate the note duration. change tempo by changing 2000 to other values
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int noteDuration = 2000/noteDurations[thisNote];
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tone(piezoPin, melody[thisNote],noteDuration);
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// to distinguish the notes, set a minimum time between them.
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// the note's duration + 30% seems to work well
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float pauseBetweenNotes = noteDuration * 1.30;
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//split the delay into two parts and check to see
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//whether the pushbutton is pressed to turn off
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//the sound and light
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delay(pauseBetweenNotes/2);
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if(digitalRead(pPin)==HIGH) {
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break;
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}
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delay(pauseBetweenNotes/2);
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if(digitalRead(pPin)==HIGH) {
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break;
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}
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}
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}
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else if (not ledOn) {
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digitalWrite(rPin, LOW);
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digitalWrite(gPin, LOW);
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digitalWrite(bPin, LOW);
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}
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}
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