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Added some comment text for interrupt select and NUM_OSCILLATORS

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This commit is contained in:
Jakob Bak 2013-01-24 10:22:47 +01:00
parent 642b4973ca
commit 5912dfdcd4
2 changed files with 19 additions and 6 deletions
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12
software/lib/MMM/Music.cpp
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@ -37,10 +37,16 @@ MMusic Music;
#define SPI_SCK 5
#define SPI_MOSI 3
// timer 2 is audio interrupt timer
ISR(TIMER2_COMPA_vect) {
OCR2A = 127;
//////////////////////////////////////////////////////////
//
// AUDIO INTERRUPT. USE EITHER 8bit or 12bitSine VERSION
// COMMENT OUT THE ONE YOU ARE NOT USING
//
//////////////////////////////////////////////////////////
ISR(TIMER2_COMPA_vect) { // timer 2 is audio interrupt timer
OCR2A = 127; // don't change this
// Music.synthInterrupt8bit();

13
software/lib/MMM/Music.h
View File

@ -25,13 +25,20 @@
#ifndef Music_h // include guard
#define Music_h
////////////////////////////////////
//
// SET NUMBER OF OSCILLATORS HERE.
// SHOULD BE 1, 2 or 3
//
////////////////////////////////////
#define NUM_OSCILLATORS 1
// current sample rate is 15625 as defined in the init() section
#define SAMPLE_RATE 15625
#define NUM_OSCILLATORS 1
#ifndef NUM_OSCILLATORS
#error NUM_OSCILLATORS should be defined in the Music.h file in the libraries folder.
#error NUM_OSCILLATORS should be defined in the Music.h file in the libraries/MMM folder.
#elif (NUM_OSCILLATORS == 1)||(NUM_OSCILLATORS == 2)||(NUM_OSCILLATORS == 3)
#else
#error NUM_OSCILLATORS shall be 1, 2 or 3