Rattknappar till en Alpine stereo.

Bygget bygger på en Microprocessor ifrån Arduino och med modifierad mjukvara
ifrån MP3car.com . Jag matar den via en 12 volts regulator för att reglera ner 14,4 volt från bilen.
Har lagt in tutan som en extra "knapp" funktion med en egen utgång till ett relä som drar bilens "tut" relä. (det räcker med ett litet relä). Logiskt, ni hänger med ? Ett schema kanske hjälper.

Knapparna på ratten ger olika spänningar beroende vilken knapp som trycks in.

Knapparna ska matas med 5 volt via ett pullup motstånd på 500 ohm (använde ett 470 ohm).

Kopplade isär kontakten för tutan (grå ej orange som är för krockkudden) vid rattstången för

ta signalerna till processorn och kopplade in relä utgången till den andra ändan till tutan.

Bild innan jag gick loss med vulktejp och buntband....

Monteringen av krockkudden till min ratt krävde lite modifikationer i plasten.

Fick tabort plast från kåpan bakom rattknapparna och en del material vid rattekrarna.

Enklast var att montera bort ratten och "dremla" av plasten. Men tänk på att ställa bilen rakt innan.
Har man ratten med blindkåpor ístället för rattknapparna så är det nog mer plug and play.

Tillslut var den på plats och med lite modifieringar i programet (Seek Up och Down var omkastat)

så funkade allt. Det knepiga är vad man ska ha för funktioner på SRC och NXT knapparna

med dubbeltryck eller när man håller in dom. Vet ej vilka funktioner dom har på 9-5an.

Men man får väl prova sig fram och det är lätt att plugga in USB kabeln och programera den.

Programvaran Alpine Stereo

Här kommer ver.2.:  (Tutan åtg. och med "defeat" ON/OFF funktion inlagd vad det nu är ?)

//Inklusive Tutan med egen utgång pin8 ,pull up moständ 470 ohm.
// please excuse the lack of comments
// this works with a simgle button and has the correct timings
// adding the send of signals to stereo.. simulating by sending to serial
#define CHECK_MS 5
#define DOUBLE_MS 400
#define HOLD_MS 1200
#define NO_B 870 //nothing pressed
#define MODE_B 776 // NXT(mode)
#define NXTD_B 643 // NEXT DOWN<<
#define NXTU_B 508 // NEXT UP>>
#define MUTE_B 385 // SRC (mute)
#define VOLU_B 264 // VOLUME UP+
#define VOLD_B 151 // VOLUME DOWN-
#define HORN 020 // TUTAN
#define alpPin 7    //utgång Alpine stereo
#define hornPin 8  //utgång för tutan 480ms high

boolean volUp[48] =   {1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 1,1,0,1,1,0,1,1, 1,1,0,1,0,1,1,0, 1,1,0,1,0,1,0,1};
boolean volDn[48] =   {1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 0,1,1,0,1,1,0,1, 1,1,1,1,0,1,1,0, 1,1,0,1,0,1,0,1};
boolean mute[48] =    {1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 1,0,1,0,1,1,0,1, 1,1,1,0,1,1,1,0, 1,1,0,1,0,1,0,1};
boolean pstUp[48] =   {1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 1,0,1,0,1,0,1,1, 1,1,1,0,1,1,1,1, 0,1,0,1,0,1,0,1};
boolean pstDn[48] =   {1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 0,1,0,1,0,1,0,1, 1,1,1,1,1,1,1,1, 0,1,0,1,0,1,0,1};
boolean source[48] =  {1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 1,0,1,1,0,1,1,1, 1,1,0,1,1,0,1,1, 0,1,0,1,0,1,0,1};
boolean trkUp[48] =   {1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 1,0,1,1,1,0,1,1, 1,1,0,1,1,0,1,0, 1,1,0,1,0,1,0,1};
boolean trkDn[48] =   {1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 0,1,0,1,1,1,0,1, 1,1,1,1,1,0,1,0, 1,1,0,1,0,1,0,1};
boolean power[48] =   {1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 0,1,1,1,0,1,1,1, 1,1,1,0,1,0,1,1, 0,1,0,1,0,1,0,1};
boolean entPlay[48] = {1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 0,1,0,1,0,1,1,1, 1,1,1,1,1,1,0,1, 0,1,0,1,0,1,0,1};
boolean bandProg[48] ={1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 0,1,1,0,1,0,1,1, 1,1,1,1,0,1,1,1, 0,1,0,1,0,1,0,1};
boolean defeat[48] =  {1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 0,1,1,0,1,1,1,1, 1,1,1,0,1,1,0,1, 0,1,0,1,0,1,0,1};
boolean spFlag = 0;
boolean dpFlag = 0;
boolean hpFlag = 0;
int button = 0;
int spbutton = 0;
/*
0-none
1-mode
2-track +
3-track -
4-mute
5-vol+
6-vol-
*/
void setup() {
Serial.begin(9600);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
}
void loop() {
int anaPin = 0; 
anaPin = analogRead(0);
  if (anaPin > HORN - 20 && anaPin < HORN + 20 )
  {digitalWrite(hornPin, HIGH);
  delay(48);
  digitalWrite(hornPin, LOW);
  }  else{
static unsigned long oldTime = 0;
int switchStatus = 0;
if (millis() >= oldTime + CHECK_MS) {
oldTime = millis();
switchStatus = CheckSwitch();
if (switchStatus == 0) {
//no button press
} else if (switchStatus == 1) {
// single press
switch (spbutton) {
case 0: // no butto, why are wh here
break;
case 1: // NXT mode
entPlaySend();
break;
case 2: // next up
trkUpSend();
break;
case 3: // next down
trkDnSend();
break;
case 4: // SRC mute
sourceSend();
break;
case 5: // vol up
volUpSend();
break;
case 6: // vol down
volDnSend();
break;
}
} else if (switchStatus == 2) {
//double press
switch (spbutton) {
case 0: // no butto, why are wh here
break;
case 1: // NXT mode
bandProgSend();
break;
case 2: // next up (folder up)
pstUpSend();
break;
case 3: // next down (folder down)
pstDnSend();
break;
case 4: // SRC mute
defeatSend();
break;
case 5: // vol up
volUpSend();
break;
case 6: // vol down
volDnSend();
break;
}
} else if (switchStatus == 3) {
//hold
switch (spbutton) {
case 0: // no butto, why are wh here
break;
case 1: // NXT mode
muteSend();
break;
case 2: // next up (track fwd)
trkUpSend();
break;
case 3: // next down (track rev)
trkDnSend();
break;
case 4: // SRC mute (av/på)
powerSend();
break;
case 5: // vol up
volUpSend();
break;
case 6: // vol down
volDnSend();
break;
}
}
}
}
}
// Service routine called by a timer interrupt
int CheckSwitch() {
static uint16_t State = 0; // Current debounce status
static int curTime = 0;
State=(State<<1) | !RawKeyPressed() | 0xe000;
if (!spFlag) {
if (hpFlag) {
if (State == 0xe000) {
return 3;
} else {
hpFlag = 0;
}
}
if (State==0xf000) {
spFlag = 1;
hpFlag = 1;
dpFlag = 1;
curTime = 0;
spbutton = button;
return 0;
}
}
if (hpFlag && State != 0xe000) {
hpFlag = 0;
}
if (spFlag && hpFlag && curTime > HOLD_MS/CHECK_MS) {
spFlag = 0;
dpFlag = 0;
return 3;
} else if (spFlag && dpFlag && State == 0xf000 && curTime < DOUBLE_MS) {
spFlag = 0;
hpFlag = 0;
dpFlag = 0;
return 2;
} else if (spFlag && !hpFlag && curTime > DOUBLE_MS) {
spFlag = 0;
hpFlag = 0;
dpFlag = 0;
return 1;
} else {
curTime = curTime + CHECK_MS;
return 0;
}
}
boolean RawKeyPressed() {
int anaPin = 0;
anaPin = analogRead(0);
if (anaPin > NO_B - 20) {
button = 0;
return 0;
} else if (anaPin > MODE_B - 20 && anaPin < MODE_B + 20 ) {
button = 1;
return 1;
} else if (anaPin > NXTU_B - 20 && anaPin < NXTU_B + 20 ) {
button = 2;
return 1;
} else if (anaPin > NXTD_B - 20 && anaPin < NXTD_B + 20 ) {
button = 3;
return 1;
} else if (anaPin > MUTE_B - 20 && anaPin < MUTE_B + 20 ) {
button = 4;
return 1;
} else if (anaPin > VOLU_B - 20 && anaPin < VOLU_B + 20 ) {
button = 5;
return 1;
} else if (anaPin > VOLD_B - 20 && anaPin < VOLD_B + 20 ) {
button = 6;
return 1;
} else {
button = 0;
return 0;
}
}
//-----------SOURCE------------------
void sourceSend() {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);
for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (source[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}
//-----------POWER ON/OFF------------------
void powerSend() {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);
for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (power[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}
//---------Track NEXT UP-----------------------------------------------
void trkUpSend() {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);
for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (trkUp[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}
//---------Track NEXT DOWN----------------------------------------------
void trkDnSend() {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);
for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (trkDn[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}
//---------Folder PST? UP-----------------------------------------------
void pstUpSend() {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);
for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (pstUp[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}
//---------Folder PST? DOWN----------------------------------------------
void pstDnSend() {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);
for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (pstDn[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}
//---------MUTE---------------------------------------------------
void muteSend() {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);
for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (mute[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}
//---------bandProg---------------------------------------------------
void bandProgSend() {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);
for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (bandProg[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}
//---------entPlay---------------------------------------------------
void entPlaySend() {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);
for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (entPlay[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}
//---------VOL UP-----------------------------------------------
void volUpSend() {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);
for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (volUp[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}
//---------VOL DOWN-----------------------------------------------
void volDnSend() {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);
for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (volDn[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}
//---------Defeat-----------------------------------------------
void defeatSend() {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);
for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (defeat[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}