So I did some more redesigning and played with the code again. I moved away from the priority SID text because it prevented my Night Panel from working.
Here's a link to my public
OSHPark.com profile. You can order PCBs (in multiples of 3) for ~$30, shipped. They're excellent quality. I'll get some pictures up soon of a newly finished board.
Also, this version uses the original CD Changer harness plug so no more splicing wires!! Literally, plug-n-play.
So right now there are several options. The board & code still supports iPod steering wheel controls, but it doesn't sound like many people need/care/want that. I'm not going to remove that, but it sounds like most people just want an audio source, and a universal one at that.
I can just put a 3.5mm stereo jack in the case and you can run a long 3.5mm male to male cable from the trunk to the dash (under the door sills and such). This should work pretty well.
Or one could install a bluetooth module in the unit, much like my car does. I made sure there were 5v and GND pins available in case anyone wanted to power a bluetooth module up.
// ----------------------------------------------
// SECUDUINO
// http://secuduino.blogspot.com/
// By Igor Real
// 16/05/2011
//
// Saab CDC Changer Emulator
// http://BlueSaab.blogspot.com/
// By Seth Evans
// 29 July 2013
// ----------------------------------------------
#include <CAN.h>
int cdbutton = 0;
int toggleshuffle = 1;
int mute = 0;
int CDCcmd[] = {
0xE0,0x00,0x3F,0x31,0xFF,0xFF,0xFF,0xD0};
int ninefivecmd[] = {
0x62,0x00,0x00,0x16,0x01,0x02,0x00,0x00};
int beep[] = {
0x80,0x04,0x00,0x00,0x00,0x00,0x00,0x00};
int playipod[] = {
0xFF,0x55,0x04,0x02,0x00,0x00,0x01,0xF9};
int playpauseipod[] = {
0xFF,0x55,0x03,0x02,0x00,0x01,0xFA};
int stopipod[] = {
0xFF,0x55,0x04,0x02,0x00,0x00,0x02,0xF8};
int next[] = {
0xFF,0x55,0x03,0x02,0x00,0x08,0xF3};
int prev[] = {
0xFF,0x55,0x03,0x02,0x00,0x10,0xEB};
int shuffle[] = {
0xFF,0x55,0x04,0x02,0x00,0x00,0x80,0x7A};
int repeat[] = {
0xFF,0x55,0x05,0x02,0x00,0x00,0x00,0x01,0xF8};
int buttonRelease[] = {
0xFF,0x55,0x03,0x02,0x00,0x00,0xFB};
void setup() {
// set up CAN
CAN.begin(47); // Saab I-Bus is 47.619kbps
Serial.begin(9600);
//cdbutton = 0;
//toggleshuffle = 1;
CAN_TxMsg.header.rtr=0; // this value never changes
CAN_TxMsg.header.length=8; // this value never changes
// not sure if this is needed; pauses program before it loops
Serial.println("9-5 Test Code 2");
delay(2000);
}
void loop() {
//cdbutton = 1;
//PrintBus();
// CDC code needs sent every second or less so all loops
// running added together need to take less than 1000ms
// but no more or the car won't "see" the CDC
CDC();
for (int i = 0; i <= 860; i++) {
if (CAN.CheckNew()) {
CAN_TxMsg.data[0]++;
CAN.ReadFromDevice(&CAN_RxMsg);
//PrintBus();
if (CAN_RxMsg.id==0x6A1) {
CAN_TxMsg.id=0x6A2; // CD Changer
for (int c = 0; c < 8; c++) {
CAN_TxMsg.data[c]=ninefivecmd[c];
}
CAN.send(&CAN_TxMsg);
}
if (CAN_RxMsg.id==0x3C0) {
if (CAN_RxMsg.data[0]==0x80) {
switch (CAN_RxMsg.data[1]) {
case 0x24:
cdbutton = 1;
for (int j = 0; j < 8; j++) {
CAN_TxMsg.id=0x430;
CAN_TxMsg.data[j]=beep[j];
}
CAN.send(&CAN_TxMsg);
for (int j = 0; j < 8; j++) {
Serial.write(byte(playipod[j]));
}
delay(3);
//Serial.println("Release");
for (int i = 0; i < 7; i++) {
Serial.write(byte(buttonRelease[i]));
}
break;
case 0x14:
cdbutton = 0;
for (int a = 0; a <=2; a++) {
for (int j = 0; j < 8; j++) {
CAN_TxMsg.id=0x430;
CAN_TxMsg.data[j]=beep[j];
}
CAN.send(&CAN_TxMsg);
}
for (int j = 0; j < 8; j++) {
Serial.write(byte(stopipod[j]));
}
delay(3);
//Serial.println("Release");
for (int i = 0; i < 7; i++) {
Serial.write(byte(buttonRelease[i]));
}
//Serial.println("Radio");
break;
}
if (cdbutton == 1) {
switch (CAN_RxMsg.data[1]) {
case 0x59: // NXT button signal
for (int j = 0; j < 7; j++) {
Serial.write(byte(playpauseipod[j]));
}
break;
case 0x76: // Long press of CD/RDM button
if (toggleshuffle > 3) {
toggleshuffle = 1;
}
switch (toggleshuffle) {
case 1:
for (int j = 0; j < 9; j++) {
Serial.write(byte(repeat[j]));
}
break;
case 2:
for (int j = 0; j < 9; j++) {
Serial.write(byte(repeat[j]));
}
break;
case 3:
for (int j = 0; j < 9; j++) {
Serial.write(byte(repeat[j]));
}
for (int j = 0; j < 8; j++) {
Serial.write(byte(shuffle[j]));
}
break;
}
toggleshuffle++;
//break;
case 0xB1: // Audio mute on?
for (int j = 0; j < 8; j++) {
Serial.write(byte(stopipod[j]));
}
break;
case 0xB0: // Audio mute off?
for (int j = 0; j < 8; j++) {
Serial.write(byte(playipod[j]));
}
break;
case 0x35: // Seek next (Seek+)?
for (int j = 0; j < 7; j++) {
Serial.write(byte(next[j]));
}
break;
case 0x36: // Seek previous (Seek-)?
for (int j = 0; j < 7; j++) {
Serial.write(byte(prev[j]));
}
break;
}
delay(3);
//Serial.println("Release");
for (int i = 0; i < 7; i++) {
Serial.write(byte(buttonRelease[i]));
}
}
}
}
if (CAN_RxMsg.id==0x290) {
if (CAN_RxMsg.data[0]==0x80) {
if (cdbutton == 1) {
switch (CAN_RxMsg.data[2]) {
//case 0x04: // NXT button on wheel
//for (int j = 0; j < 9; j++) {
//Serial.write(byte(repeat[j]));
//}
//break;
case 0x10: // Seek+ button on wheel
//Serial.println("Next");
for (int j = 0; j < 7; j++) {
Serial.write(byte(next[j]));
}
break;
case 0x08: // Seek- button on wheel
//Serial.println("Prev");
for (int k = 0; k < 7; k++) {
Serial.write(byte(prev[k]));
}
break;
}
delay(3);
//Serial.println("Release");
for (int i = 0; i < 7; i++) {
Serial.write(byte(buttonRelease[i]));
}
}
}
}
}
delay(1);
}
if (cdbutton==1) {
//Serial.println("iPod ON");
iPodOn();
}
else {
//Serial.println("iPod OFF");
//iPodOff();
//delay(400);
}
}
void CDC() {
CAN_TxMsg.id=0x3C8; // CD Changer
for (int c = 0; c < 8; c++) {
CAN_TxMsg.data[c]=CDCcmd[c];
}
CAN.send(&CAN_TxMsg);
}
void iPodOn() {
// This loop takes 50ms
CAN_TxMsg.id=0x328; // SID audio text
CAN_TxMsg.data[0]=0x42; // message 2
CAN_TxMsg.data[1]=0x96;
CAN_TxMsg.data[2]=0x02; // Row 2
CAN_TxMsg.data[3]=0x20; // _
CAN_TxMsg.data[4]=0x3C; // <
CAN_TxMsg.data[5]=0x42; // B
CAN_TxMsg.data[6]=0x6C; // l
CAN_TxMsg.data[7]=0x75; // u
CAN.send(&CAN_TxMsg);
delay(10);
CAN_TxMsg.data[0]=0x01; // message 1
CAN_TxMsg.data[3]=0x65; // e
CAN_TxMsg.data[4]=0x74; // t
CAN_TxMsg.data[5]=0x6F; // o
CAN_TxMsg.data[6]=0x6F; // o
CAN_TxMsg.data[7]=0x74; // t
CAN.send(&CAN_TxMsg);
delay(10);
CAN_TxMsg.data[0]=0x00; // message 0
CAN_TxMsg.data[3]=0x68; // h
CAN_TxMsg.data[4]=0x3E; // >
CAN_TxMsg.data[5]=0x20; //
CAN_TxMsg.data[6]=0x20; //
CAN_TxMsg.data[7]=0x20; //
CAN.send(&CAN_TxMsg);
delay(10);
CAN_TxMsg.id=0x348; // audio text control
CAN_TxMsg.data[0]=0x11; // 11
CAN_TxMsg.data[1]=0x02; // Row 2?
CAN_TxMsg.data[2]=0x05; // 05
CAN_TxMsg.data[3]=0x18; // priority 18?
CAN_TxMsg.data[4]=0x00;
CAN_TxMsg.data[5]=0x00;
CAN_TxMsg.data[6]=0x00;
CAN_TxMsg.data[7]=0x00;
CAN.send(&CAN_TxMsg);
delay(10);
/*CAN_TxMsg.id=0x368; // SID text priority
CAN_TxMsg.data[0]=0x02; // Row 2
CAN_TxMsg.data[1]=0x18; // priority 18?
CAN_TxMsg.data[2]=0x00;
CAN_TxMsg.data[3]=0x00;
CAN_TxMsg.data[4]=0x00;
CAN_TxMsg.data[5]=0x00;
CAN_TxMsg.data[6]=0x00;
CAN_TxMsg.data[7]=0x00;
CAN.send(&CAN_TxMsg);
delay(10);
*/
}
void PrintBus() {
if (CAN_RxMsg.id==0x6A2) {
//if (CAN_RxMsg.data[0]==0x80) {
Serial.print(CAN_RxMsg.id,HEX);
Serial.print(";");
for (int i = 0; i < 8; i++) {
Serial.print(CAN_RxMsg.data[i],HEX);
Serial.print(";");
}
Serial.println("");
}
}
