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Arduino-Development / libraries /Robot_Control /src /Melody.cpp
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Archive original Arduino development files (part 8)
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/*
Copyright (c) 2012 Arduino LLC. All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "ArduinoRobot.h"
#include "SquawkSD.h"
#include "Fat16.h"
SQUAWK_CONSTRUCT_ISR(SQUAWK_PWM_PIN5);
void RobotControl::beginSpeaker(uint16_t frequency){
SquawkSynth::begin(frequency);
SquawkSynth::play();
osc[2].vol = 0x7F;
}
void RobotControl::playNote(byte period, word length, char modifier) {
// Modifier . makes note length 2/3
if(modifier == '.') length = (length * 2) / 3;
// Set up the play frequency, 352800 is [sample_rate]=44100 * [tuning]=8.0
osc[2].freq = 352800 / period;
// Delay, silence, delay
delay(length);
osc[2].freq = 0;
delay(length);
}
void RobotControl::playMelody(char* script){
// Find length of play string
word length = strlen(script);
// Set the default note time
word time = 500;
// Loop through each character in the play string
for(int n = 0; n < length; n++) {
// Fetch the character AFTER the current one - it may contain a modifier
char modifier = script[n + 1];
// Fetch the current character and branch accordingly
switch(script[n]) {
// Notes
case 'c': playNote(214, time, modifier); break; // Play a C
case 'C': playNote(202, time, modifier); break; // Play a C#
case 'd': playNote(190, time, modifier); break; // Play a D
case 'D': playNote(180, time, modifier); break; // Play a D#
case 'e': playNote(170, time, modifier); break; // Play an E
case 'f': playNote(160, time, modifier); break; // Play an F
case 'F': playNote(151, time, modifier); break; // Play an F#
case 'g': playNote(143, time, modifier); break; // Play a G
case 'G': playNote(135, time, modifier); break; // Play a G#
case 'a': playNote(127, time, modifier); break; // Play an A
case 'A': playNote(120, time, modifier); break; // Play an A#
case 'b': playNote(113, time, modifier); break; // Play a B
// Delay
case '-': playNote(0, time, modifier); break; // Play a quiet note
// Note lengths
case '1': time = 1000; break; // Full note
case '2': time = 500; break; // Half note
case '4': time = 250; break; // Quarter note
case '8': time = 50; break; // Eigth note
// Modifier '.' makes note length 2/3
}
}
}
void RobotControl::beep(int beep_length){
char scr1[]="8F";
char scr2[]="8Fe";
char scr3[]="1F";
switch (beep_length)
{
case BEEP_SIMPLE:
default:
playMelody(scr1);
break;
case BEEP_DOUBLE:
playMelody(scr2);
break;
case BEEP_LONG:
playMelody(scr3);
}
}
void RobotControl::tempoWrite(int tempo){
SquawkSynthSD::tempo(tempo);
}
void RobotControl::tuneWrite(float tune){
SquawkSynthSD::tune(tune);
}
void RobotControl::playFile(char* filename){
melody.open(filename,O_READ);
SquawkSynthSD::play(melody);
}
void RobotControl::stopPlayFile(){
melody.close();
}