johnwasser:
Something like this:
boolean setBrightness()
{
photocellReading = analogRead(photocellPin);
photocellReading = 1023 - photocellReading;
photocellReading = constrain(photocellReading, 600, 1023); //<-- il 970 potete cambiarlo
LEDbrightness = map(photocellReading, 600, 1023, 0, 255);
analogWrite(LEDpin, LEDbrightness);
return LEDbrightness > 0; // Return 'true' if the LED is on
}
void loop()
{
if (setBrightness())
play_rtttl(song);
}
[...]
if (note)
{
// Play note
tone1.play(notes[(scale - 4) * 12 + note]);
delay(duration);
tone1.stop();
}
else
{
// Play rest
delay(duration);
}
if (!setBrightness())
return; // LED is off, time to stop playing the melody
[...]
tanks, I have tried in this mode:
#include <Tone.h>
#include <LiquidCrystal.h>
int controllo_lum(int);
// inizializzo display LCD
LiquidCrystal lcd (12, 11, 5, 4, 3, 2);
Tone tone1;
//setto i PIN
int photocellPin = 0; // the cell and 10K pulldown are connected to a0
int photocellReading; // the analog reading from the sensor divider
int LEDpin = 6; // connect Red LED to pin 11 (PWM pin)
int LEDbrightness;
#define OCTAVE_OFFSET 0
int notes[] = { 0,
NOTE_C4, NOTE_CS4, NOTE_D4, NOTE_DS4, NOTE_E4, NOTE_F4, NOTE_FS4, NOTE_G4, NOTE_GS4, NOTE_A4, NOTE_AS4, NOTE_B4,
NOTE_C5, NOTE_CS5, NOTE_D5, NOTE_DS5, NOTE_E5, NOTE_F5, NOTE_FS5, NOTE_G5, NOTE_GS5, NOTE_A5, NOTE_AS5, NOTE_B5,
NOTE_C6, NOTE_CS6, NOTE_D6, NOTE_DS6, NOTE_E6, NOTE_F6, NOTE_FS6, NOTE_G6, NOTE_GS6, NOTE_A6, NOTE_AS6, NOTE_B6,
NOTE_C7, NOTE_CS7, NOTE_D7, NOTE_DS7, NOTE_E7, NOTE_F7, NOTE_FS7, NOTE_G7, NOTE_GS7, NOTE_A7, NOTE_AS7, NOTE_B7
};
//CANZONI DISPINIBILI IN RTTTL
MissionImp:d=16,o=6,b=95:32d,32d#,32d,32d#,32d,32d#,32d,32d#,32d,32d,32d#,32e,32f,32f#,32g,g,8p,g,8p,a#,p,c7,p,g,8p,g,8p,f,p,f#,p,g,8p,g,8p,a#,p,c7,p,g,8p,g,8p,f,p,f#,p,a#,g,2d,32p,a#,g,2c#,32p,a#,g,2c,a#5,8c,2p,32p,a#5,g5,2f#,32p,a#5,g5,2f,32p,a#5,g5,2e,d#,8d";
void setup(void)
{
Serial.begin(9600);
tone1.begin(7); //porta a cui e connesso lo speaker
lcd.begin(16, 2); //setto colonne e righe display
lcd.setCursor(0,0); //setto il cursore sopra a sinistra
lcd.print("CIAO");
}
void loop()
{
photocellReading = analogRead(photocellPin);
//Serial.print("Analog reading = ");
//Serial.println(photocellReading); // the raw analog reading
// LED gets brighter the darker it is at the sensor
// that means we have to -invert- the reading from 0-1023 back to 1023-0
photocellReading = 1023 - photocellReading;
//now we have to map 0-1023 to 0-255 since thats the range analogWrite uses
photocellReading = constrain(photocellReading, 600, 1023); //<-- il 970 potete cambiarlo
LEDbrightness = map(photocellReading, 600, 1023, 0, 255);
analogWrite(LEDpin, LEDbrightness);
delay(100);
{
if (LEDbrightness)
{
play_rtttl(song);
}
}
}
#define isdigit(n) (n >= '0' && n <= '9')
void play_rtttl(char *p)
{
// Absolutely no error checking in here
byte default_dur = 4;
byte default_oct = 6;
int bpm = 63;
int num;
long wholenote;
long duration;
byte note;
byte scale;
int luce;
luce = LEDbrightness;
// format: d=N,o=N,b=NNN:
// find the start (skip name, etc)
while(*p != ':') p++; // ignore name
p++; // skip ':'
// get default duration
if(*p == 'd')
{
p++; p++; // skip "d="
num = 0;
while(isdigit(*p))
{
num = (num * 10) + (*p++ - '0');
}
if(num > 0) default_dur = num;
p++; // skip comma
}
Serial.print("ddur: "); Serial.println(default_dur, 10);
// get default octave
if(*p == 'o')
{
p++; p++; // skip "o="
num = *p++ - '0';
if(num >= 3 && num <=7) default_oct = num;
p++; // skip comma
}
Serial.print("doct: "); Serial.println(default_oct, 10);
// get BPM
if(*p == 'b')
{
p++; p++; // skip "b="
num = 0;
while(isdigit(*p))
{
num = (num * 10) + (*p++ - '0');
}
bpm = num;
p++; // skip colon
}
Serial.print("bpm: "); Serial.println(bpm, 10);
// BPM usually expresses the number of quarter notes per minute
wholenote = (60 * 1000L / bpm) * 4; // this is the time for whole note (in milliseconds)
Serial.print("wn: "); Serial.println(wholenote, 10);
// now begin note loop
while((*p) && (luce>1))
{
// first, get note duration, if available
num = 0;
while(isdigit(*p))
{
num = (num * 10) + (*p++ - '0');
}
if(num) duration = wholenote / num;
else duration = wholenote / default_dur; // we will need to check if we are a dotted note after
// now get the note
note = 0;
switch(*p)
{
case 'c':
note = 1;
break;
case 'd':
note = 3;
break;
case 'e':
note = 5;
break;
case 'f':
note = 6;
break;
case 'g':
note = 8;
break;
case 'a':
note = 10;
break;
case 'b':
note = 12;
break;
case 'p':
default:
note = 0;
}
p++;
// now, get optional '#' sharp
if(*p == '#')
{
note++;
p++;
}
// now, get optional '.' dotted note
if(*p == '.')
{
duration += duration/2;
p++;
}
// now, get scale
if(isdigit(*p))
{
scale = *p - '0';
p++;
}
else
{
scale = default_oct;
}
scale += OCTAVE_OFFSET;
if(*p == ',')
p++; // skip comma for next note (or we may be at the end)
// now play the note
if(note)
{
Serial.print("Playing: ");
Serial.print(scale, 10); Serial.print(' ');
Serial.print(note, 10); Serial.print(" (");
Serial.print(notes[(scale - 4) * 12 + note], 10);
Serial.print(") ");
Serial.println(duration, 10);
tone1.play(notes[(scale - 4) * 12 + note]);
delay(duration);
tone1.stop();
}
else
{
Serial.print("Pausing: ");
Serial.println(duration, 10);
delay(duration);
}
if(!LEDbrightness)
{
return;
}
}
}
ma quando la melodia inzia, anche se dopo nella stanza ce luce, il led non si spenge, perchè la melodia deve finire di suanare per intero! =(
Works perfectly!