I am not a fan of programming. But I may like it. I tried to make Arduino Chiptunes with Arduino. But I don’t know how to upload Arduino code. With the new code reprogram the Arduino and situate the LEDs on pin 10 and pin 12 and after the reprogramming play with the drums.
Step 1: Requirements
To make this project we will need some things, those things are:
•An Arduino
•A machine capable of playing a tune every time you push a button to activate it.
Step 2: Type of Speakers
In this time many speakers available in the market so you choose any speaker. Some speakers built in amp with 3.5 mm jacks. So you choose any speaker which you like and work properly for this project.
Step 3: Programming of Arduino
#include <avr/io.h>
#include <avr/signal.h>
#include <avr/interrupt.h>
#define TRACKLEN 32
#define MAXTRACK 0x92
#define SONGLEN 0x37
#include <avr/pgmspace.h>
extern "C" {
typedef unsigned char u8;
typedef unsigned short u16;
typedef char s8;
typedef short s16;
typedef unsigned long u32;
byte songdata[] PROGMEM = {
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0x48, 0x0f, 0x40, 0x80, 0x00, 0xf2, 0x23, 0x02, 0x64, 0x07, 0x22, 0x00,
0x82, 0x03, 0x10, 0x1c, 0x11, 0x20, 0x3f, 0x64, 0x07, 0x03, 0x6e, 0x7e,
0xe9, 0x05, 0x17, 0x5a, 0x66, 0xb1, 0x65, 0x16, 0x5a, 0x66, 0x89, 0x85,
0x95, 0x57, 0x54, 0x99, 0xe5, 0x95, 0x18, 0x11, 0x20, 0x31, 0x22, 0x40,
0x62, 0x44, 0x80, 0xc4, 0x00, 0x22, 0x40, 0x62, 0x44, 0x80, 0xf4, 0x88,
0x00, 0x89, 0x11, 0x01, 0x00, 0x03, 0x2e, 0x12, 0x43, 0x62, 0x48, 0x0f,
0x89, 0x21, 0x3d, 0x44, 0x18, 0x60, 0x7e, 0x08, 0x10, 0x89, 0x21, 0x31,
0xa4, 0x87, 0xc4, 0x90, 0x1e, 0x22, 0x0c, 0x30, 0x3f, 0x00, 0xfb, 0x2d,
0x02, 0x24, 0x02, 0x84, 0x48, 0x04, 0x48, 0x6f, 0xc4, 0x9e, 0x70, 0xd7,
0xeb, 0xc5, 0x76, 0xc2, 0x1e, 0x70, 0x17, 0xeb, 0xe1, 0x76, 0xc0, 0xde,
0x6f, 0xd7, 0xeb, 0xc5, 0x76, 0xbf, 0xde, 0x6e, 0x17, 0xeb, 0xe1, 0x76,
0xbb, 0x1e, 0x6e, 0x87, 0xeb, 0xc5, 0x76, 0xc4, 0xde, 0x6e, 0x17, 0xeb,
0xf5, 0x36, 0x3f, 0xa3, 0x0d, 0x00, 0x00, 0x48, 0x0c, 0x40, 0x68, 0x00,
0x32, 0x03, 0x00, 0x00, 0x89, 0x01, 0xc8, 0x0b, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xbd, 0x26, 0xb1, 0xcc,
0x00, 0x7f, 0x4d, 0x41, 0x00, 0x48, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x2b, 0x21, 0x11, 0x20, 0x25, 0x80, 0x08,
0x90, 0x58, 0x62, 0x29, 0x11, 0x01, 0x52, 0x22, 0x02, 0x00, 0x29, 0x11,
0x01, 0x56, 0x52, 0x22, 0x00, 0x90, 0x12, 0x11, 0x60, 0x25, 0x24, 0x02,
0x00, 0x29, 0x11, 0x01, 0x52, 0x22, 0x02, 0xa4, 0x44, 0x04, 0x00, 0xcf,
0xcc, 0xc0, 0x11, 0x01, 0x52, 0x22, 0x02, 0xa4, 0x44, 0x04, 0x48, 0x86,
0x08, 0x90, 0x12, 0x11, 0x20, 0x19, 0x22, 0x40, 0x4a, 0x44, 0x80, 0x94,
0x88, 0x00, 0xc9, 0x10, 0x01, 0x52, 0x22, 0x02, 0xa4, 0x44, 0x04, 0x48,
0x86, 0x08, 0x90, 0x12, 0x11, 0xa0, 0x99, 0x01, 0x68, 0x46, 0x80, 0x53,
0x22, 0x02, 0xa4, 0x44, 0x04
};
volatile u8 callbackwait;
volatile u8 lastsample;
volatile u8 timetoplay;
volatile u8 test;
volatile u8 testwait;
u8 trackwait;
u8 trackpos;
u8 playsong;
u8 songpos;
u32 noiseseed = 1;
u8 light[2];
/*const u16 freqtable[] = {
0x010b, 0x011b, 0x012c, 0x013e, 0x0151, 0x0165, 0x017a, 0x0191, 0x01a9,
0x01c2, 0x01dd, 0x01f9, 0x0217, 0x0237, 0x0259, 0x027d, 0x02a3, 0x02cb,
0x02f5, 0x0322, 0x0352, 0x0385, 0x03ba, 0x03f3, 0x042f, 0x046f, 0x04b2,
0x04fa, 0x0546, 0x0596, 0x05eb, 0x0645, 0x06a5, 0x070a, 0x0775, 0x07e6,
0x085f, 0x08de, 0x0965, 0x09f4, 0x0a8c, 0x0b2c, 0x0bd6, 0x0c8b, 0x0d4a,
0x0e14, 0x0eea, 0x0fcd, 0x10be, 0x11bd, 0x12cb, 0x13e9, 0x1518, 0x1659,
0x17ad, 0x1916, 0x1a94, 0x1c28, 0x1dd5, 0x1f9b, 0x217c, 0x237a, 0x2596,
0x27d3, 0x2a31, 0x2cb3, 0x2f5b, 0x322c, 0x3528, 0x3851, 0x3bab, 0x3f37,
0x42f9, 0x46f5, 0x4b2d, 0x4fa6, 0x5462, 0x5967, 0x5eb7, 0x6459, 0x6a51,
0x70a3, 0x7756, 0x7e6f
};*/
const u16 freqtable[] = {
0x0085, 0x008d, 0x0096, 0x009f, 0x00a8, 0x00b2, 0x00bd, 0x00c8, 0x00d4,
0x00e1, 0x00ee, 0x00fc, 0x010b, 0x011b, 0x012c, 0x013e, 0x0151, 0x0165,
0x017a, 0x0191, 0x01a9, 0x01c2, 0x01dd, 0x01f9, 0x0217, 0x0237, 0x0259,
0x027d, 0x02a3, 0x02cb, 0x02f5, 0x0322, 0x0352, 0x0385, 0x03ba, 0x03f3,
0x042f, 0x046f, 0x04b2, 0x04fa, 0x0546, 0x0596, 0x05eb, 0x0645, 0x06a5,
0x070a, 0x0775, 0x07e6, 0x085f, 0x08de, 0x0965, 0x09f4, 0x0a8c, 0x0b2c,
0x0bd6, 0x0c8b, 0x0d4a, 0x0e14, 0x0eea, 0x0fcd, 0x10be, 0x11bd, 0x12cb,
0x13e9, 0x1518, 0x1659, 0x17ad, 0x1916, 0x1a94, 0x1c28, 0x1dd5, 0x1f9b,
0x217c, 0x237a, 0x2596, 0x27d3, 0x2a31, 0x2cb3, 0x2f5b, 0x322c, 0x3528,
0x3851, 0x3bab, 0x3f37
};
const s8 sinetable[] = {
0, 12, 25, 37, 49, 60, 71, 81, 90, 98, 106, 112, 117, 122, 125, 126,
127, 126, 125, 122, 117, 112, 106, 98, 90, 81, 71, 60, 49, 37, 25, 12,
0, -12, -25, -37, -49, -60, -71, -81, -90, -98, -106, -112, -117, -122,
-125, -126, -127, -126, -125, -122, -117, -112, -106, -98, -90, -81,
-71, -60, -49, -37, -25, -12
};
const u8 validcmds[] = "0dfijlmtvw~+=";
enum {
WF_TRI,
WF_SAW,
WF_PUL,
WF_NOI
};
volatile struct oscillator {
u16 freq;
u16 phase;
u16 duty;
u8 waveform;
u8 volume; // 0-255
} osc[4];
struct trackline {
u8 note;
u8 instr;
u8 cmd[2];
u8 param[2];
};
struct track {
struct trackline line[TRACKLEN];
};
struct unpacker {
u16 nextbyte;
u8 buffer;
u8 bits;
};
struct channel {
struct unpacker trackup;
u8 tnum;
s8 transp;
u8 tnote;
u8 lastinstr;
u8 inum;
u16 iptr;
u8 iwait;
u8 inote;
s8 bendd;
s16 bend;
s8 volumed;
s16 dutyd;
u8 vdepth;
u8 vrate;
u8 vpos;
s16 inertia;
u16 slur;
} channel[4];
u16 resources[16 + MAXTRACK];
struct unpacker songup;
byte readsongbyte(u16 offset)
{
return pgm_read_byte_near(&songdata[0] + offset);
}
void watchdogoff()
{
}
void initup(struct unpacker *up, u16 offset) {
up->nextbyte = offset;
up->bits = 0;
}
u8 readbit(struct unpacker *up) {
u8 val;
if(!up->bits) {
up->buffer = readsongbyte(up->nextbyte++);
up->bits = 8;
}
up->bits--;
val = up->buffer & 1;
up->buffer >>= 1;
return val;
}
u16 readchunk(struct unpacker *up, u8 n) {
u16 val = 0;
u8 i;
for(i = 0; i < n; i++) {
if(readbit(up)) {
val |= (1 << i);
}
}
return val;
}
void readinstr(byte num, byte pos, byte *dest) {
dest[0] = readsongbyte(resources[num] + 2 * pos + 0);
dest[1] = readsongbyte(resources[num] + 2 * pos + 1);
}
void runcmd(u8 ch, u8 cmd, u8 param) {
switch(validcmds[cmd]) {
case '0':
channel[ch].inum = 0;
break;
case 'd':
osc[ch].duty = param << 8;
break;
case 'f':
channel[ch].volumed = param;
break;
case 'i':
channel[ch].inertia = param << 1;
break;
case 'j':
channel[ch].iptr = param;
break;
case 'l':
channel[ch].bendd = param;
break;
case 'm':
channel[ch].dutyd = param << 6;
break;
case 't':
channel[ch].iwait = param;
break;
case 'v':
osc[ch].volume = param;
break;
case 'w':
osc[ch].waveform = param;
break;
case '+':
channel[ch].inote = param + channel[ch].tnote - 12 * 4;
break;
case '=':
channel[ch].inote = param;
break;
case '~':
if(channel[ch].vdepth != (param >> 4)) {
channel[ch].vpos = 0;
}
channel[ch].vdepth = param >> 4;
channel[ch].vrate = param & 15;
break;
}
}
void playroutine() { // called at 50 Hz
u8 ch;
u8 lights;
if(playsong) {
if(trackwait) {
trackwait--;
} else {
trackwait = 4;
if(!trackpos) {
if(playsong) {
if(songpos >= SONGLEN) {
playsong = 0;
} else {
for(ch = 0; ch < 4; ch++) {
u8 gottransp;
u8 transp;
gottransp = readchunk(&songup, 1);
channel[ch].tnum = readchunk(&songup, 6);
if(gottransp) {
transp = readchunk(&songup, 4);
if(transp & 0x8) transp |= 0xf0;
} else {
transp = 0;
}
channel[ch].transp = (s8) transp;
if(channel[ch].tnum) {
initup(&channel[ch].trackup, resources[16 + channel[ch].tnum - 1]);
}
}
songpos++;
}
}
}
if(playsong) {
for(ch = 0; ch < 4; ch++) {
if(channel[ch].tnum) {
u8 note, instr, cmd, param;
u8 fields;
fields = readchunk(&channel[ch].trackup, 3);
note = 0;
instr = 0;
cmd = 0;
param = 0;
if(fields & 1) note = readchunk(&channel[ch].trackup, 7);
if(fields & 2) instr = readchunk(&channel[ch].trackup, 4);
if(fields & 4) {
cmd = readchunk(&channel[ch].trackup, 4);
param = readchunk(&channel[ch].trackup, 8);
}
if(note) {
channel[ch].tnote = note + channel[ch].transp;
if(!instr) instr = channel[ch].lastinstr;
}
if(instr) {
if(instr == 2) light[1] = 5;
if(instr == 1) {
light[0] = 5;
if(channel[ch].tnum == 4) {
light[0] = light[1] = 3;
}
}
if(instr == 7) {
light[0] = light[1] = 30;
}
channel[ch].lastinstr = instr;
channel[ch].inum = instr;
channel[ch].iptr = 0;
channel[ch].iwait = 0;
channel[ch].bend = 0;
channel[ch].bendd = 0;
channel[ch].volumed = 0;
channel[ch].dutyd = 0;
channel[ch].vdepth = 0;
}
if(cmd) runcmd(ch, cmd, param);
}
}
trackpos++;
trackpos &= 31;
}
}
}
for(ch = 0; ch < 4; ch++) {
s16 vol;
u16 duty;
u16 slur;
while(channel[ch].inum && !channel[ch].iwait) {
u8 il[2];
readinstr(channel[ch].inum, channel[ch].iptr, il);
channel[ch].iptr++;
runcmd(ch, il[0], il[1]);
}
if(channel[ch].iwait) channel[ch].iwait--;
if(channel[ch].inertia) {
s16 diff;
slur = channel[ch].slur;
diff = freqtable[channel[ch].inote] - slur;
//diff >>= channel[ch].inertia;
if(diff > 0) {
if(diff > channel[ch].inertia) diff = channel[ch].inertia;
} else if(diff < 0) {
if(diff < -channel[ch].inertia) diff = -channel[ch].inertia;
}
slur += diff;
channel[ch].slur = slur;
} else {
slur = freqtable[channel[ch].inote];
}
osc[ch].freq =
slur +
channel[ch].bend +
((channel[ch].vdepth * sinetable[channel[ch].vpos & 63]) >> 2);
channel[ch].bend += channel[ch].bendd;
vol = osc[ch].volume + channel[ch].volumed;
if(vol < 0) vol = 0;
if(vol > 255) vol = 255;
osc[ch].volume = vol;
duty = osc[ch].duty + channel[ch].dutyd;
if(duty > 0xe000) duty = 0x2000;
if(duty < 0x2000) duty = 0xe000;
osc[ch].duty = duty;
channel[ch].vpos += channel[ch].vrate;
}
lights = 0;
if(light[0]) {
light[0]--;
lights |= 0x04;
}
if(light[1]) {
light[1]--;
lights |= 0x10;
}
PORTB = lights;
}
void initresources() {
u8 i;
struct unpacker up;
initup(&up, 0);
for(i = 0; i < 16 + MAXTRACK; i++) {
resources[i] = readchunk(&up, 13);
}
initup(&songup, resources[0]);
}
int main() {
asm("cli");
watchdogoff();
CLKPR = 0x80;
CLKPR = 0x80;
DDRC = 0x12;
DDRD = 0xff;
//PORTC = 0;
pinMode(10,OUTPUT);
pinMode(12,OUTPUT);
timetoplay = 0;
trackwait = 0;
trackpos = 0;
playsong = 1;
songpos = 0;
osc[0].volume = 0;
channel[0].inum = 0;
osc[1].volume = 0;
channel[1].inum = 0;
osc[2].volume = 0;
channel[2].inum = 0;
osc[3].volume = 0;
channel[3].inum = 0;
initresources();
TCCR0A = 0x02;
TCCR0B = 0x02; // clkIO/8, so 1/8 MHz
OCR0A = 125;//125; // 8 KHz
TCCR2A=0b10100011;
TCCR2B=0b00000001;
TIMSK0 = 0x02;
asm("sei");
for(;;) {
while(!timetoplay);
timetoplay--;
playroutine();
}
}
ISR(TIMER0_COMPA_vect) // called at 8 KHz
{
u8 i;
s16 acc;
u8 newbit;
OCR2B = lastsample;
newbit = 0;
if(noiseseed & 0x80000000L) newbit ^= 1;
if(noiseseed & 0x01000000L) newbit ^= 1;
if(noiseseed & 0x00000040L) newbit ^= 1;
if(noiseseed & 0x00000200L) newbit ^= 1;
noiseseed = (noiseseed << 1) | newbit;
if(callbackwait) {
callbackwait--;
} else {
timetoplay++;
callbackwait = 180 - 1;
}
acc = 0;
for(i = 0; i < 4; i++) {
s8 value; // [-32,31]
switch(osc[i].waveform) {
case WF_TRI:
if(osc[i].phase < 0x8000) {
value = -32 + (osc[i].phase >> 9);
} else {
value = 31 - ((osc[i].phase - 0x8000) >> 9);
}
break;
case WF_SAW:
value = -32 + (osc[i].phase >> 10);
break;
case WF_PUL:
value = (osc[i].phase > osc[i].duty)? -32 : 31;
break;
case WF_NOI:
value = (noiseseed & 63) - 32;
break;
default:
value = 0;
break;
}
osc[i].phase += osc[i].freq;
acc += value * osc[i].volume; // rhs = [-8160,7905]
}
// acc [-32640,31620]
lastsample = 128 + (acc >> 8); // [1,251]
}
}
Step 4: How to Assemble
You may done this project with software programming but hardware is not finished. Now, you take one of your speaker wires, and then plug it into pin 3 which is a PWM pin. Then, plug it into ground or power. You can hear music with this project.
Step 5: Done
Step 6: How to Add a Jack
Step 7: How to adjust It!
Connect an LED from pin 3 to ground.Then, listen to it with the light listener
Have fun!
Step 8: Make it Beatbox
Here's the beatbox code:
#include <avr/io.h>
#include <avr/signal.h>
#include <avr/interrupt.h>
#define TRACKLEN 32
#define MAXTRACK 0x92
#define SONGLEN 0x37
#include <avr/pgmspace.h>
extern "C" {
typedef unsigned char u8;
typedef unsigned short u16;
typedef char s8;
typedef short s16;
typedef unsigned long u32;
byte songdata[] PROGMEM = {
0x87, 0x30, 0x2a, 0x24, 0x45, 0xbb, 0x50, 0x58, 0x20, 0xc3, 0x6c, 0x80,
0x0e, 0xd1, 0x41, 0x3e, 0x4c, 0x58, 0x1a, 0xb1, 0x54, 0xa4, 0x94, 0x19,
0x50, 0x03, 0x97, 0x52, 0x40, 0x60, 0x0a, 0x53, 0x11, 0x2c, 0x9e, 0x45,
0xbe, 0xe8, 0x18, 0x2b, 0xe3, 0x68, 0x9c, 0x8d, 0xc2, 0xd1, 0x39, 0x60,
0xc7, 0xf5, 0xe0, 0x1f, 0x1c, 0x64, 0x88, 0x84, 0x11, 0x3c, 0xb2, 0x48,
0x4e, 0x49, 0x2d, 0x89, 0x26, 0xe8, 0x84, 0x9f, 0x38, 0x94, 0x8e, 0x92,
0x53, 0x9e, 0x4a, 0x57, 0xb1, 0x2b, 0x8d, 0x45, 0xb5, 0x14, 0x67, 0xe9,
0x32, 0x5e, 0xe8, 0x0b, 0x83, 0x29, 0x31, 0x60, 0xc6, 0xcc, 0x68, 0x9a,
0x41, 0x63, 0x6c, 0xaa, 0xcd, 0xb8, 0xe1, 0x37, 0x20, 0x97, 0xe5, 0x24,
0x1d, 0xb9, 0x73, 0x7a, 0x82, 0x4f, 0xf2, 0xc9, 0x3e, 0x03, 0x08, 0x00,
0x00, 0x1b, 0x00, 0x00, 0xa8, 0xb5, 0x00, 0x80, 0x9b, 0x2b, 0x00, 0x00,
0x00, 0x02, 0x00, 0x00, 0x20, 0x60, 0x58, 0x40, 0x02, 0x09, 0x00, 0x20,
0x90, 0x00, 0x4c, 0x02, 0x49, 0x00, 0x25, 0x30, 0x00, 0x54, 0x0e, 0x09,
0xc0, 0x24, 0x90, 0x00, 0x4c, 0x02, 0x09, 0x00, 0x25, 0x60, 0x00, 0x54,
0x02, 0x09, 0xc2, 0x24, 0x90, 0x50, 0x4c, 0x02, 0x89, 0x05, 0x25, 0x90,
0x60, 0x54, 0x02, 0x89, 0xc6, 0x24, 0x90, 0x70, 0x4c, 0x02, 0x89, 0x07,
0x25, 0x90, 0x90, 0x5c, 0x0e, 0x89, 0xc6, 0x44, 0x60, 0xc2, 0x7c, 0x04,
0xa7, 0x0c, 0x48, 0x80, 0xd2, 0x84, 0x04, 0xa9, 0x8d, 0x48, 0x88, 0x3e,
0xce, 0x48, 0xa0, 0xea, 0x90, 0x04, 0x2c, 0x4f, 0xe9, 0xb0, 0x1a, 0x10,
0x02, 0x89, 0xd7, 0x24, 0x90, 0x80, 0x51, 0x02, 0x89, 0x58, 0x25, 0x90,
0x90, 0x4d, 0x02, 0x89, 0xd9, 0x24, 0x90, 0xa0, 0x51, 0x02, 0x89, 0xd8,
0xe5, 0x90, 0x90, 0x4d, 0x82, 0xef, 0x74, 0xe6, 0x34, 0x82, 0xf0, 0x7c,
0x26, 0x35, 0x84, 0xf1, 0x64, 0x66, 0x35, 0x82, 0xf2, 0x6c, 0xe6, 0x34,
0x82, 0xc9, 0x84, 0xe6, 0x34, 0x82, 0xc9, 0x84, 0x26, 0x35, 0x84, 0xc9,
0x8c, 0x66, 0x35, 0x8e, 0xc9, 0x8c, 0xe6, 0x34, 0x8c, 0xf8, 0xcc, 0xe7,
0x34, 0x8c, 0xf8, 0xcc, 0x27, 0x35, 0x8c, 0xf8, 0xcc, 0x67, 0x35, 0x8c,
0xf8, 0xcc, 0xe7, 0x34, 0x8c, 0xf8, 0xcc, 0xe7, 0x34, 0x8c, 0xf8, 0xcc,
0x27, 0x35, 0x88, 0xed, 0xcc, 0xe7, 0x35, 0x90, 0xee, 0x28, 0x5a, 0x03,
0x09, 0x03, 0x08, 0xff, 0x07, 0x01, 0x09, 0x02, 0x01, 0x90, 0x0b, 0x31,
0x05, 0xa0, 0x02, 0xf0, 0x00, 0x08, 0xff, 0x09, 0x03, 0x07, 0x02, 0x09,
0x02, 0x0b, 0x31, 0x01, 0x70, 0x05, 0xd0, 0x07, 0x02, 0x02, 0xf8, 0x04,
0x01, 0x00, 0x09, 0x02, 0x06, 0x05, 0x0b, 0x31, 0x08, 0xff, 0x02, 0xf0,
0x07, 0x06, 0x02, 0x00, 0x07, 0x16, 0x0a, 0x25, 0x00, 0x09, 0x03, 0x08,
0xff, 0x07, 0x01, 0x09, 0x00, 0x06, 0x05, 0x0b, 0x3d, 0x02, 0xf0, 0x07,
0x06, 0x02, 0x00, 0x07, 0x20, 0x02, 0xf0, 0x00, 0x09, 0x03, 0x08, 0xff,
0x07, 0x01, 0x09, 0x02, 0x01, 0x50, 0x06, 0x01, 0x0b, 0x31, 0x07, 0x05,
0x02, 0xfe, 0x00, 0x09, 0x02, 0x01, 0x80, 0x0b, 0x3d, 0x08, 0xc0, 0x02,
0x08, 0x07, 0x02, 0x02, 0xf0, 0x07, 0x02, 0x02, 0x00, 0x07, 0x16, 0x0a,
0x34, 0x00, 0x09, 0x03, 0x08, 0xff, 0x02, 0xfc, 0x00, 0x03, 0x00, 0x09,
0x03, 0x08, 0xff, 0x07, 0x01, 0x09, 0x02, 0x06, 0x05, 0x02, 0xff, 0x0b,
0x3d, 0x07, 0x03, 0x0b, 0x38, 0x07, 0x03, 0x0b, 0x34, 0x07, 0x03, 0x0b,
0x31, 0x07, 0x03, 0x04, 0x07, 0x00, 0x03, 0x00, 0x09, 0x03, 0x08, 0xff,
0x07, 0x01, 0x09, 0x02, 0x06, 0x05, 0x02, 0xff, 0x0b, 0x3d, 0x07, 0x03,
0x0b, 0x38, 0x07, 0x03, 0x0b, 0x35, 0x07, 0x03, 0x0b, 0x31, 0x07, 0x03,
0x04, 0x07, 0x00, 0x03, 0x00, 0x09, 0x03, 0x08, 0xff, 0x07, 0x01, 0x09,
0x02, 0x06, 0x05, 0x02, 0xff, 0x0b, 0x3d, 0x07, 0x03, 0x0b, 0x38, 0x07,
0x03, 0x0b, 0x36, 0x07, 0x03, 0x0b, 0x31, 0x07, 0x03, 0x04, 0x07, 0x00,
0x09, 0x03, 0x08, 0xff, 0x07, 0x01, 0x09, 0x00, 0x06, 0x05, 0x0b, 0x3d,
0x02, 0xf0, 0x07, 0x06, 0x02, 0x00, 0x07, 0x06, 0x0a, 0x25, 0x00, 0x09,
0x03, 0x08, 0xff, 0x02, 0xf0, 0x00, 0x08, 0xc4, 0x09, 0x00, 0x06, 0x05,
0x0b, 0x3d, 0x02, 0xf0, 0x07, 0x06, 0x02, 0x00, 0x07, 0x06, 0x0a, 0x25,
0x00, 0x00, 0x00, 0x6b, 0x04, 0x00, 0x20, 0x0d, 0x2c, 0x23, 0x58, 0x23,
0x00, 0xb4, 0x81, 0x80, 0x44, 0xc0, 0x34, 0x90, 0x06, 0xd2, 0xc0, 0x32,
0x02, 0x60, 0x8d, 0x40, 0x1a, 0x00, 0x11, 0x00, 0x6b, 0x04, 0xd2, 0x00,
0x00, 0x2c, 0x23, 0x00, 0x80, 0x35, 0x02, 0x00, 0x90, 0x06, 0x80, 0x65,
0x04, 0x00, 0x00, 0x00, 0x94, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0x00, 0x8b, 0x45, 0x62,
0x89, 0x25, 0x96, 0x18, 0x12, 0x03, 0x90, 0x18, 0xc2, 0x42, 0x58, 0x00,
0xc2, 0x42, 0x4a, 0x48, 0x09, 0x01, 0x21, 0x20, 0x00, 0x2b, 0x1d, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xcb,
0x08, 0x11, 0x6a, 0x8d, 0x48, 0x23, 0x0d, 0xa4, 0x81, 0x65, 0x84, 0x08,
0xd0, 0x0c, 0x42, 0x11, 0x01, 0xd6, 0x08, 0xa4, 0x81, 0x65, 0x84, 0x08,
0xb5, 0x46, 0x20, 0x0d, 0xa4, 0x81, 0x65, 0x84, 0x08, 0xb5, 0x46, 0x20,
0x8d, 0x34, 0xd2, 0x48, 0x03, 0x6b, 0x04, 0x00, 0x20, 0x0d, 0x2c, 0x23,
0x44, 0x80, 0x35, 0x02, 0x40, 0x1b, 0x08, 0x98, 0xc6, 0x32, 0x42, 0x04,
0x58, 0x23, 0x90, 0x06, 0xd2, 0xc0, 0x32, 0x82, 0x35, 0x02, 0xcb, 0x08,
0x11, 0x20, 0x19, 0x22, 0x00, 0x6b, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa7, 0xd1, 0x00, 0x20, 0x25,
0x84, 0x86, 0xcc, 0x90, 0x12, 0x12, 0x43, 0x6c, 0xc8, 0x0c, 0xa1, 0x21,
0x25, 0x84, 0x86, 0xcc, 0x90, 0x12, 0x12, 0x43, 0x66, 0xc8, 0x0b, 0xc7,
0xcd, 0x00, 0x00, 0x44, 0x60, 0x00, 0x48, 0x0c, 0x20, 0x02, 0x03, 0x40,
0x70, 0x44, 0x20, 0x22, 0x00, 0x82, 0x23, 0x02, 0x24, 0x07, 0x10, 0x01,
0x62, 0x23, 0x02, 0xa4, 0x87, 0xdc, 0x00, 0xc3, 0x0d, 0x40, 0x04, 0x06,
0x80, 0xc4, 0x00, 0x22, 0x30, 0x00, 0x04, 0x87, 0xd8, 0x10, 0x1a, 0x11,
0x20, 0x31, 0x80, 0x08, 0x10, 0x1a, 0x11, 0x20, 0xb8, 0xe4, 0xb2, 0x4b,
0x0f, 0x03, 0x0e, 0x80, 0x00, 0x91, 0x1e, 0x80, 0xe4, 0x10, 0x21, 0x02,
0x44, 0x7e, 0x08, 0x10, 0x11, 0x22, 0x3b, 0x00, 0xc1, 0x21, 0x33, 0xc4,
0x06, 0x03, 0x0e, 0xf2, 0x03, 0x11, 0x00, 0xe9, 0x01, 0x00, 0x00, 0x00,
0x00, 0x28, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8b, 0x0d, 0x11, 0x20,
0x33, 0x22, 0x30, 0x10, 0x1a, 0x88, 0x00, 0x48, 0x8c, 0x08, 0x1c, 0x1b,
0x11, 0x20, 0x31, 0x22, 0x40, 0x70, 0xb1, 0x85, 0x86, 0xe0, 0x88, 0x00,
0xb1, 0x21, 0x34, 0x22, 0x40, 0x66, 0x44, 0x80, 0xc4, 0x00, 0x00, 0x63,
0x0d, 0xe7, 0x3f, 0x25, 0x24, 0x86, 0x94, 0x10, 0x16, 0x52, 0x42, 0x62,
0x1c, 0x80, 0x94, 0x10, 0x5a, 0x66, 0x89, 0x85, 0x15, 0x55, 0x50, 0x29,
0x05, 0x14, 0x4e, 0x3c, 0xf9, 0x04, 0x94, 0x52, 0x5a, 0x89, 0x05, 0x07,
0x2b, 0x0d, 0xe7, 0x3f, 0x19, 0x24, 0x83, 0xa0, 0x60, 0x0c, 0x52, 0x42,
0x58, 0xc8, 0x08, 0x29, 0x21, 0x19, 0x24, 0x83, 0xa0, 0x90, 0x17, 0xc2,
0xe2, 0x00, 0xa4, 0x94, 0x53, 0x50, 0x61, 0x01, 0x63, 0x0d, 0xe7, 0x3f,
0x31, 0x24, 0x83, 0xb0, 0x90, 0x12, 0x92, 0x41, 0x58, 0x44, 0x80, 0xc6,
0x06, 0x80, 0x08, 0x90, 0x0c, 0xe7, 0x3f, 0x2c, 0xa4, 0x84, 0x64, 0x90,
0x12, 0x92, 0xe1, 0x00, 0x84, 0x45, 0x04, 0xc8, 0x8b, 0x08, 0x00, 0xa3,
0x0d, 0x11, 0x20, 0x36, 0x00, 0xc1, 0x11, 0x01, 0x81, 0xd0, 0x90, 0x5d,
0x72, 0xc1, 0x21, 0x3b, 0xa4, 0x87, 0xfc, 0x88, 0x00, 0x11, 0x02, 0x08,
0x0e, 0x99, 0x21, 0x36, 0x00, 0x6b, 0x14, 0x12, 0x00, 0x00, 0x80, 0x08,
0x00, 0xc4, 0x10, 0x44, 0x16, 0x48, 0x03, 0x09, 0x20, 0x01, 0x00, 0x20,
0x02, 0x00, 0x00, 0x00, 0x00, 0xb0, 0x46, 0x01, 0x44, 0x40, 0x20, 0x0d,
0x10, 0x01, 0x90, 0x06, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4b,
0x14, 0x00, 0x20, 0x15, 0x10, 0x01, 0x10, 0x08, 0x92, 0x40, 0x0c, 0xc8,
0x02, 0x59, 0x00, 0x44, 0x80, 0x20, 0x88, 0xc0, 0x40, 0x06, 0x44, 0x60,
0x20, 0x08, 0x00, 0x0b, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x4b, 0x14, 0x00, 0x20, 0x15, 0x10, 0x01,
0x10, 0x08, 0x92, 0x40, 0x0c, 0x08, 0x02, 0x41, 0x00, 0x44, 0x80, 0x20,
0x88, 0xc0, 0x40, 0x06, 0x44, 0x60, 0x20, 0x08, 0x00, 0x43, 0x19, 0x00,
0x00, 0x00, 0x80, 0x8c, 0x40, 0x04, 0x40, 0x56, 0x00, 0x40, 0x04, 0x88,
0x0a, 0x00, 0x88, 0x00, 0x41, 0x01, 0x44, 0x00, 0x3b, 0x19, 0x00, 0x10,
0x01, 0x82, 0x22, 0x02, 0x44, 0x05, 0x00, 0x00, 0x00, 0x4a, 0x3f, 0x00,
0x00, 0x00, 0x00, 0x00, 0x23, 0x19, 0x00, 0x00, 0x00, 0x80, 0x98, 0x00,
0x04, 0x05, 0x00, 0x00, 0x42, 0x02, 0x58, 0xf8, 0x00, 0x00, 0x1b, 0x19,
0x00, 0x00, 0xa0, 0xfc, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x3b, 0x19, 0x80, 0x9c, 0x10, 0x14, 0x80, 0xa0, 0x10, 0x15, 0x00,
0x0a, 0x3e, 0x80, 0xb4, 0x00, 0xa4, 0x85, 0xa8, 0x88, 0x00, 0x21, 0x11,
0x01, 0x32, 0x22, 0x02, 0x00, 0x43, 0x19, 0x00, 0x0a, 0x3f, 0x80, 0xac,
0x00, 0x50, 0xf8, 0x01, 0x44, 0x05, 0x80, 0xc2, 0x0f, 0x20, 0x26, 0xb0,
0x06, 0x00, 0x00, 0x43, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x23, 0x14, 0x80, 0x10, 0x10, 0x08, 0x80,
0x2c, 0x10, 0x07, 0xf2, 0x40, 0x08, 0x00, 0x42, 0x40, 0x20, 0x00, 0xb2,
0x40, 0x20, 0x81, 0x64, 0x11, 0x02, 0x5b, 0x14, 0x80, 0x2c, 0x90, 0x0b,
0x80, 0x18, 0x90, 0x04, 0xa2, 0x40, 0x16, 0x00, 0xd2, 0x00, 0x10, 0x07,
0x80, 0x3c, 0x58, 0xe0, 0x00, 0x63, 0x14, 0xc2, 0x00, 0x11, 0x00, 0x39,
0x20, 0x0a, 0x84, 0x01, 0x22, 0x00, 0xa2, 0x40, 0x18, 0x08, 0x03, 0x44,
0x00, 0xe4, 0x80, 0x3c, 0x10, 0x07, 0xc2, 0x40, 0x0a, 0x00, 0x3b, 0x14,
0x72, 0x00, 0x90, 0x09, 0x80, 0x40, 0x10, 0x07, 0xb2, 0x40, 0x12, 0x39,
0xe4, 0x92, 0x4a, 0x26, 0x81, 0xc4, 0x91, 0x44, 0x0e, 0x00, 0x92, 0x00,
0x00, 0x5b, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x63, 0x14, 0x00, 0x00, 0x00, 0x80, 0x30, 0x00, 0xc4,
0x01, 0x00, 0x00, 0x00, 0x20, 0x0e, 0x00, 0x83, 0x14, 0x00, 0x20, 0x10,
0x10, 0x01, 0x00, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x2b, 0x1d, 0x00, 0x00, 0x00, 0x86, 0x42, 0x00, 0x41, 0x11, 0x01, 0x82,
0x02, 0x00, 0x84, 0x46, 0x04, 0x04, 0x42, 0x23, 0x02, 0x04, 0x05, 0x00,
0x1b, 0x25, 0x00, 0x10, 0x01, 0xf2, 0x22, 0x02, 0x02, 0x19, 0x01, 0xc8,
0x88, 0x08, 0x90, 0x17, 0x80, 0x8c, 0x00, 0x64, 0x84, 0xbc, 0x90, 0x11,
0x00, 0x23, 0x25, 0x00, 0x10, 0x01, 0x02, 0x23, 0x02, 0x02, 0x21, 0x01,
0x08, 0x89, 0x08, 0x10, 0x12, 0x00, 0x20, 0x30, 0x22, 0x20, 0x10, 0x18,
0x11, 0x20, 0x24, 0x00, 0x5b, 0x25, 0x11, 0x20, 0x1f, 0x80, 0x08, 0x90,
0x15, 0x11, 0x20, 0x2b, 0x22, 0x40, 0x3e, 0x00, 0x11, 0x20, 0x2b, 0x22,
0x40, 0x56, 0x44, 0x80, 0x7c, 0x00, 0x22, 0x40, 0x3e, 0x00, 0xb2, 0x22,
0x02, 0x02, 0xf9, 0x10, 0x01, 0x00, 0x23, 0x25, 0x80, 0x90, 0x88, 0x00,
0x81, 0x81, 0x08, 0x80, 0xc0, 0x88, 0x00, 0x21, 0x01, 0x88, 0x09, 0x44,
0x00, 0xc4, 0x44, 0x04, 0x88, 0x0c, 0x20, 0x02, 0x44, 0x46, 0x04, 0x88,
0x89, 0x08, 0x10, 0x19, 0x11, 0x00, 0xa3, 0x25, 0x42, 0x0b, 0x2d, 0x34,
0x22, 0x40, 0x50, 0x20, 0x02, 0x20, 0x28, 0x22, 0x40, 0x50, 0x08, 0x0d,
0x41, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa3, 0x29, 0x42, 0x0b, 0x2a,
0x34, 0x22, 0x40, 0x50, 0x20, 0x02, 0x20, 0x28, 0x22, 0x40, 0x50, 0x00,
0x42, 0x43, 0x68, 0xa1, 0x85, 0x46, 0x04, 0x08, 0x0a, 0x44, 0x00, 0x04,
0x45, 0x04, 0x08, 0x0a, 0xa1, 0x01, 0x0b, 0x25, 0x00, 0x00, 0x00, 0x00,
0x00, 0xc8, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2b, 0x21, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2b,
0x1d, 0x00, 0x00, 0x18, 0x6b, 0x91, 0x12, 0x80, 0xb0, 0x90, 0x18, 0xc2,
0x42, 0x4a, 0x08, 0x8d, 0x02, 0x90, 0x19, 0xc2, 0x42, 0x4a, 0x88, 0x0d,
0xc3, 0x2d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x48, 0x0c,
0xa1, 0xc5, 0x96, 0x5b, 0x70, 0xd9, 0xa5, 0x07, 0x03, 0x2e, 0x00, 0x00,
0x48, 0x0f, 0x40, 0x80, 0x00, 0xf2, 0x23, 0x02, 0x64, 0x07, 0x22, 0x00,
0x82, 0x03, 0x10, 0x1c, 0x11, 0x20, 0x3f, 0x64, 0x07, 0x03, 0x6e, 0x7e,
0xe9, 0x05, 0x17, 0x5a, 0x66, 0xb1, 0x65, 0x16, 0x5a, 0x66, 0x89, 0x85,
0x95, 0x57, 0x54, 0x99, 0xe5, 0x95, 0x18, 0x11, 0x20, 0x31, 0x22, 0x40,
0x62, 0x44, 0x80, 0xc4, 0x00, 0x22, 0x40, 0x62, 0x44, 0x80, 0xf4, 0x88,
0x00, 0x89, 0x11, 0x01, 0x00, 0x03, 0x2e, 0x12, 0x43, 0x62, 0x48, 0x0f,
0x89, 0x21, 0x3d, 0x44, 0x18, 0x60, 0x7e, 0x08, 0x10, 0x89, 0x21, 0x31,
0xa4, 0x87, 0xc4, 0x90, 0x1e, 0x22, 0x0c, 0x30, 0x3f, 0x00, 0xfb, 0x2d,
0x02, 0x24, 0x02, 0x84, 0x48, 0x04, 0x48, 0x6f, 0xc4, 0x9e, 0x70, 0xd7,
0xeb, 0xc5, 0x76, 0xc2, 0x1e, 0x70, 0x17, 0xeb, 0xe1, 0x76, 0xc0, 0xde,
0x6f, 0xd7, 0xeb, 0xc5, 0x76, 0xbf, 0xde, 0x6e, 0x17, 0xeb, 0xe1, 0x76,
0xbb, 0x1e, 0x6e, 0x87, 0xeb, 0xc5, 0x76, 0xc4, 0xde, 0x6e, 0x17, 0xeb,
0xf5, 0x36, 0x3f, 0xa3, 0x0d, 0x00, 0x00, 0x48, 0x0c, 0x40, 0x68, 0x00,
0x32, 0x03, 0x00, 0x00, 0x89, 0x01, 0xc8, 0x0b, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xbd, 0x26, 0xb1, 0xcc,
0x00, 0x7f, 0x4d, 0x41, 0x00, 0x48, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x2b, 0x21, 0x11, 0x20, 0x25, 0x80, 0x08,
0x90, 0x58, 0x62, 0x29, 0x11, 0x01, 0x52, 0x22, 0x02, 0x00, 0x29, 0x11,
0x01, 0x56, 0x52, 0x22, 0x00, 0x90, 0x12, 0x11, 0x60, 0x25, 0x24, 0x02,
0x00, 0x29, 0x11, 0x01, 0x52, 0x22, 0x02, 0xa4, 0x44, 0x04, 0x00, 0xcf,
0xcc, 0xc0, 0x11, 0x01, 0x52, 0x22, 0x02, 0xa4, 0x44, 0x04, 0x48, 0x86,
0x08, 0x90, 0x12, 0x11, 0x20, 0x19, 0x22, 0x40, 0x4a, 0x44, 0x80, 0x94,
0x88, 0x00, 0xc9, 0x10, 0x01, 0x52, 0x22, 0x02, 0xa4, 0x44, 0x04, 0x48,
0x86, 0x08, 0x90, 0x12, 0x11, 0xa0, 0x99, 0x01, 0x68, 0x46, 0x80, 0x53,
0x22, 0x02, 0xa4, 0x44, 0x04
};
volatile u8 callbackwait;
volatile u8 lastsample;
volatile u8 timetoplay;
volatile u8 test;
volatile u8 testwait;
u8 trackwait;
u8 trackpos;
u8 playsong;
u8 songpos;
u32 noiseseed = 1;
u8 light[2];
/*const u16 freqtable[] = {
0x010b, 0x011b, 0x012c, 0x013e, 0x0151, 0x0165, 0x017a, 0x0191, 0x01a9,
0x01c2, 0x01dd, 0x01f9, 0x0217, 0x0237, 0x0259, 0x027d, 0x02a3, 0x02cb,
0x02f5, 0x0322, 0x0352, 0x0385, 0x03ba, 0x03f3, 0x042f, 0x046f, 0x04b2,
0x04fa, 0x0546, 0x0596, 0x05eb, 0x0645, 0x06a5, 0x070a, 0x0775, 0x07e6,
0x085f, 0x08de, 0x0965, 0x09f4, 0x0a8c, 0x0b2c, 0x0bd6, 0x0c8b, 0x0d4a,
0x0e14, 0x0eea, 0x0fcd, 0x10be, 0x11bd, 0x12cb, 0x13e9, 0x1518, 0x1659,
0x17ad, 0x1916, 0x1a94, 0x1c28, 0x1dd5, 0x1f9b, 0x217c, 0x237a, 0x2596,
0x27d3, 0x2a31, 0x2cb3, 0x2f5b, 0x322c, 0x3528, 0x3851, 0x3bab, 0x3f37,
0x42f9, 0x46f5, 0x4b2d, 0x4fa6, 0x5462, 0x5967, 0x5eb7, 0x6459, 0x6a51,
0x70a3, 0x7756, 0x7e6f
};*/
const u16 freqtable[] = {
0x0085, 0x008d, 0x0096, 0x009f, 0x00a8, 0x00b2, 0x00bd, 0x00c8, 0x00d4,
0x00e1, 0x00ee, 0x00fc, 0x010b, 0x011b, 0x012c, 0x013e, 0x0151, 0x0165,
0x017a, 0x0191, 0x01a9, 0x01c2, 0x01dd, 0x01f9, 0x0217, 0x0237, 0x0259,
0x027d, 0x02a3, 0x02cb, 0x02f5, 0x0322, 0x0352, 0x0385, 0x03ba, 0x03f3,
0x042f, 0x046f, 0x04b2, 0x04fa, 0x0546, 0x0596, 0x05eb, 0x0645, 0x06a5,
0x070a, 0x0775, 0x07e6, 0x085f, 0x08de, 0x0965, 0x09f4, 0x0a8c, 0x0b2c,
0x0bd6, 0x0c8b, 0x0d4a, 0x0e14, 0x0eea, 0x0fcd, 0x10be, 0x11bd, 0x12cb,
0x13e9, 0x1518, 0x1659, 0x17ad, 0x1916, 0x1a94, 0x1c28, 0x1dd5, 0x1f9b,
0x217c, 0x237a, 0x2596, 0x27d3, 0x2a31, 0x2cb3, 0x2f5b, 0x322c, 0x3528,
0x3851, 0x3bab, 0x3f37
};
const s8 sinetable[] = {
0, 12, 25, 37, 49, 60, 71, 81, 90, 98, 106, 112, 117, 122, 125, 126,
127, 126, 125, 122, 117, 112, 106, 98, 90, 81, 71, 60, 49, 37, 25, 12,
0, -12, -25, -37, -49, -60, -71, -81, -90, -98, -106, -112, -117, -122,
-125, -126, -127, -126, -125, -122, -117, -112, -106, -98, -90, -81,
-71, -60, -49, -37, -25, -12
};
const u8 validcmds[] = "0dfijlmtvw~+=";
enum {
WF_TRI,
WF_SAW,
WF_PUL,
WF_NOI
};
volatile struct oscillator {
u16 freq;
u16 phase;
u16 duty;
u8 waveform;
u8 volume; // 0-255
} osc[4];
struct trackline {
u8 note;
u8 instr;
u8 cmd[2];
u8 param[2];
};
struct track {
struct trackline line[TRACKLEN];
};
struct unpacker {
u16 nextbyte;
u8 buffer;
u8 bits;
};
struct channel {
struct unpacker trackup;
u8 tnum;
s8 transp;
u8 tnote;
u8 lastinstr;
u8 inum;
u16 iptr;
u8 iwait;
u8 inote;
s8 bendd;
s16 bend;
s8 volumed;
s16 dutyd;
u8 vdepth;
u8 vrate;
u8 vpos;
s16 inertia;
u16 slur;
} channel[4];
u16 resources[16 + MAXTRACK];
struct unpacker songup;
byte readsongbyte(u16 offset)
{
return pgm_read_byte_near(&songdata[0] + offset);
}
void watchdogoff()
{
}
void initup(struct unpacker *up, u16 offset) {
up->nextbyte = offset;
up->bits = 0;
}
u8 readbit(struct unpacker *up) {
u8 val;
if(!up->bits) {
up->buffer = readsongbyte(up->nextbyte++);
up->bits = 8;
}
up->bits--;
val = up->buffer & 1;
up->buffer >>= 1;
return val;
}
u16 readchunk(struct unpacker *up, u8 n) {
u16 val = 0;
u8 i;
for(i = 0; i < n; i++) {
if(readbit(up)) {
val |= (1 << i);
}
}
return val;
}
void readinstr(byte num, byte pos, byte *dest) {
dest[0] = readsongbyte(resources[num] + 2 * pos + 0);
dest[1] = readsongbyte(resources[num] + 2 * pos + 1);
}
void runcmd(u8 ch, u8 cmd, u8 param) {
switch(validcmds[cmd]) {
case '0':
channel[ch].inum = 0;
break;
case 'd':
osc[ch].duty = param << 8;
break;
case 'f':
channel[ch].volumed = param;
break;
case 'i':
channel[ch].inertia = param << 1;
break;
case 'j':
channel[ch].iptr = param;
break;
case 'l':
channel[ch].bendd = param;
break;
case 'm':
channel[ch].dutyd = param << 6;
break;
case 't':
channel[ch].iwait = param;
break;
case 'v':
osc[ch].volume = param;
break;
case 'w':
osc[ch].waveform = param;
break;
case '+':
channel[ch].inote = param + channel[ch].tnote - 12 * 4;
break;
case '=':
channel[ch].inote = param;
break;
case '~':
if(channel[ch].vdepth != (param >> 4)) {
channel[ch].vpos = 0;
}
channel[ch].vdepth = param >> 4;
channel[ch].vrate = param & 15;
break;
}
}
void playroutine() { // called at 50 Hz
u8 ch;
u8 lights;
if(playsong) {
if(trackwait) {
trackwait--;
} else {
trackwait = 4;
if(!trackpos) {
if(playsong) {
if(songpos >= SONGLEN) {
playsong = 0;
} else {
for(ch = 0; ch < 4; ch++) {
u8 gottransp;
u8 transp;
gottransp = readchunk(&songup, 1);
channel[ch].tnum = readchunk(&songup, 6);
if(gottransp) {
transp = readchunk(&songup, 4);
if(transp & 0x8) transp |= 0xf0;
} else {
transp = 0;
}
channel[ch].transp = (s8) transp;
if(channel[ch].tnum) {
initup(&channel[ch].trackup, resources[16 + channel[ch].tnum - 1]);
}
}
songpos++;
}
}
}
if(playsong) {
for(ch = 0; ch < 4; ch++) {
if(channel[ch].tnum) {
u8 note, instr, cmd, param;
u8 fields;
fields = readchunk(&channel[ch].trackup, 3);
note = 0;
instr = 0;
cmd = 0;
param = 0;
if(fields & 1) note = readchunk(&channel[ch].trackup, 7);
if(fields & 2) instr = readchunk(&channel[ch].trackup, 4);
if(fields & 4) {
cmd = readchunk(&channel[ch].trackup, 4);
param = readchunk(&channel[ch].trackup, 8);
}
if(note) {
channel[ch].tnote = note + channel[ch].transp;
if(!instr) instr = channel[ch].lastinstr;
}
if(instr) {
if(instr == 2) light[1] = 5;
if(instr == 1) {
light[0] = 5;
if(channel[ch].tnum == 4) {
light[0] = light[1] = 3;
}
}
if(instr == 7) {
light[0] = light[1] = 30;
}
channel[ch].lastinstr = instr;
channel[ch].inum = instr;
channel[ch].iptr = 0;
channel[ch].iwait = 0;
channel[ch].bend = 0;
channel[ch].bendd = 0;
channel[ch].volumed = 0;
channel[ch].dutyd = 0;
channel[ch].vdepth = 0;
}
if(cmd) runcmd(ch, cmd, param);
}
}
trackpos++;
trackpos &= 31;
}
}
}
for(ch = 0; ch < 4; ch++) {
s16 vol;
u16 duty;
u16 slur;
while(channel[ch].inum && !channel[ch].iwait) {
u8 il[2];
readinstr(channel[ch].inum, channel[ch].iptr, il);
channel[ch].iptr++;
runcmd(ch, il[0], il[1]);
}
if(channel[ch].iwait) channel[ch].iwait--;
if(channel[ch].inertia) {
s16 diff;
slur = channel[ch].slur;
diff = freqtable[channel[ch].inote] - slur;
//diff >>= channel[ch].inertia;
if(diff > 0) {
if(diff > channel[ch].inertia) diff = channel[ch].inertia;
} else if(diff < 0) {
if(diff < -channel[ch].inertia) diff = -channel[ch].inertia;
}
slur += diff;
channel[ch].slur = slur;
} else {
slur = freqtable[channel[ch].inote];
}
osc[ch].freq =
slur +
channel[ch].bend +
((channel[ch].vdepth * sinetable[channel[ch].vpos & 63]) >> 2);
channel[ch].bend += channel[ch].bendd;
vol = osc[ch].volume + channel[ch].volumed;
if(vol < 0) vol = 0;
if(vol > 255) vol = 255;
osc[ch].volume = vol;
duty = osc[ch].duty + channel[ch].dutyd;
if(duty > 0xe000) duty = 0x2000;
if(duty < 0x2000) duty = 0xe000;
osc[ch].duty = duty;
channel[ch].vpos += channel[ch].vrate;
}
lights = 0;
if(light[0]) {
light[0]--;
lights |= 0x02;
}
if(light[1]) {
light[1]--;
lights |= 0x10;
}
PORTC = lights;
}
void initresources() {
u8 i;
struct unpacker up;
initup(&up, 0);
for(i = 0; i < 16 + MAXTRACK; i++) {
resources[i] = readchunk(&up, 13);
}
initup(&songup, resources[0]);
}
int main() {
asm("cli");
watchdogoff();
CLKPR = 0x80;
CLKPR = 0x80;
DDRC = 0x12;
DDRD = 0xff;
PORTC = 0;
timetoplay = 0;
trackwait = 0;
trackpos = 0;
playsong = 1;
songpos = 0;
osc[0].volume = 0;
channel[0].inum = 0;
osc[1].volume = 0;
channel[1].inum = 0;
osc[2].volume = 0;
channel[2].inum = 0;
osc[3].volume = 0;
channel[3].inum = 0;
initresources();
TCCR0A = 0x02;
TCCR0B = 0x02; // clkIO/8, so 1/8 MHz
OCR0A = 125;//125; // 8 KHz
TCCR2A=0b10100011;
TCCR2B=0b00000001;
TIMSK0 = 0x02;
asm("sei");
for(;;) {
while(!timetoplay);
timetoplay--;
playroutine();
}
}
ISR(TIMER0_COMPA_vect) // called at 8 KHz
{
u8 i;
s16 acc;
u8 newbit;
OCR2B = lastsample;
newbit = 0;
if(noiseseed & 0x80000000L) newbit ^= 1;
if(noiseseed & 0x01000000L) newbit ^= 1;
if(noiseseed & 0x00000040L) newbit ^= 1;
if(noiseseed & 0x00000200L) newbit ^= 1;
noiseseed = (noiseseed << 1) | newbit;
if(callbackwait) {
callbackwait--;
} else {
timetoplay++;
callbackwait = 180 - 1;
}
acc = 0;
for(i = 0; i < 4; i++) {
s8 value; // [-32,31]
switch(osc[i].waveform) {
case WF_TRI:
if(osc[i].phase < 0x8000) {
value = -32 + (osc[i].phase >> 9);
} else {
value = 31 - ((osc[i].phase - 0x8000) >> 9);
}
break;
case WF_SAW:
value = -32 + (osc[i].phase >> 10);
break;
case WF_PUL:
value = (osc[i].phase > osc[i].duty)? -32 : 31;
break;
case WF_NOI:
value = (noiseseed & 63) - 32;
break;
default:
value = 0;
break;
}
osc[i].phase += osc[i].freq;
acc += value * osc[i].volume; // rhs = [-8160,7905]
}
// acc [-32640,31620]
lastsample = 128 + (acc >> 8); // [1,251]
}
}
Now you can hear the music with completed this project Have fun!
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