apuntes_Arduino/American_Anthem/American_Anthem.ino

104 lines
3.2 KiB
C++
Executable File

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