Question: Receiving media keys/ multi stearing commands and pass to CDC emulator

[istals]

Hey!

I have a question,

Is there a possibility to get prev/next commands from the head unit and multi steering next/prev track signals pass to CDC emulators?

[tomaskovacik]

these?

https://github.com/tomaskovacik/vwcdavr/blob/eaf4728656153876310d7062e409dd500cb984b5/CDC_emulator/cdc_arduino_ported_k9spud_vwcdpic/cdc_arduino_ported_k9spud_vwcdpic.ino#L209

[istals]

Yes

https://github.com/tomaskovacik/vwcdavr/blob/eaf4728656153876310d7062e409dd500cb984b5/CDC_emulator/cdc_arduino_ported_k9spud_vwcdpic/cdc_arduino_ported_k9spud_vwcdpic.ino#L1137-L1178

But also I needed to add SetStateIdleThenPlay(); after init Init_VWCDC(); to get radio playing, I feel that I'm missing something

[tomaskovacik]

what exactly do you need to do with them? if you press button on MFSW or on radio then emulator will change track

[istals]

Ok, then that is not happening, I'm using Arduino Uno (__AVR_ATmega328P__) defs and things I changed in code

// #define DUMPMODE
// #define DUMPMODE2
//#define DISC_TRACK_NUMBER_FROM_MPD
// #define BLUETOOTH

#define RADIO_COMMAND      PB0 //ICP
#define RADIO_COMMAND_DDR  DDRB
#define RADIO_COMMAND_PORT  PORTB
#define RADIO_COMMAND_PIN PINB
//standard pinout 8,11,13
#define RADIO_CLOCK       PB5
#define RADIO_CLOCK_DDR    DDRB
#define RADIO_CLOCK_PORT  PORTB
#if defined(__AVR_ATmega328PB__) //cannot use pb3 with serial1
#define RADIO_DATA        PB2
#else
#define RADIO_DATA        PB3
#endif
#define RADIO_DATA_DDR    DDRB
#define RADIO_DATA_PORT  PORTB
//my pinout, 8,6,A0
//#define RADIO_CLOCK        PD4
//#define RADIO_CLOCK_DDR    DDRD
//#define RADIO_CLOCK_PORT  PORTD
//#define RADIO_DATA         PC3
//#define RADIO_DATA_DDR     DDRC
//#define RADIO_DATA_PORT  PORTC
//#define RADIO_ACC 3 // PD3 = INT1

int main()
{
  Serial.begin(9600);

  pinMode(D_CTRL_PREV_PIN, OUTPUT);
  pinMode(D_CTRL_NEXT_PIN, OUTPUT);
  pinMode(D_CTRL_LED_PIN, OUTPUT);
  digitalWrite(D_CTRL_PREV_PIN, LOW);
  digitalWrite(D_CTRL_NEXT_PIN, LOW);
  digitalWrite(D_CTRL_LED_PIN, LOW);
#ifdef BLUETOOTH
#if defined(__AVR_ATmega324__) || defined(__AVR_ATmega324A__) || defined(__AVR_ATmega324P__) || defined(__AVR_ATmega324PA__) || defined(__AVR_ATmega324PB__) || defined(__AVR_ATmega324PB__) || defined(__AVR_ATmega328PB__)
  Serial1.begin(9600);
#else
  Serial.begin(9600);
//
#endif
#endif

#ifdef DISC_TRACK_NUMBER_FROM_MPD
#if defined(__AVR_ATmega324__) || defined(__AVR_ATmega324A__) || defined(__AVR_ATmega324P__) || defined(__AVR_ATmega324PA__) || defined(__AVR_ATmega324PB__) || defined(__AVR_ATmega324PB__)
  Serial1.begin(115200);
#else
  Serial.begin(115200);
#endif
#endif
  //Serial.println("COM+SNAME+VWCDPIC1");

  unsigned long delay_time = 0;
  int next_high = 0;
  int prev_high = 0;

  Init_VWCDC();
  // starts playing Bluetooth stream
  // SetStateIdleThenPlay();
//#if defined(__AVR_ATmega328P__)
//  Serial.println("__AVR_ATmega328P__ board");
//#endif

// my board __AVR_ATmega328P__
#ifdef DISC_TRACK_NUMBER_FROM_MPD
  //start in idle mode
  SetStateIdle();
#endif
  //Serial.println("COM+TONEOFF");
  while (1)
  {
    CDC_Protocol();

    if (D_CTRL_LED_STATE == 1) {
      digitalWrite(D_CTRL_LED_PIN, HIGH);
    } else {
      digitalWrite(D_CTRL_LED_PIN, LOW);
    }

    if (D_CTRL_NEXT > 0) {
      Serial.println("D_CTRL_NEXT press");
      if (delay_time == 0) {
        delay_time = millis();
        digitalWrite(D_CTRL_NEXT_PIN, HIGH);
        next_high = 1;
      } else if (delay_time + 200 <= millis()) {
        digitalWrite(D_CTRL_NEXT_PIN, LOW);
        next_high = 0;
        delay_time = 0;
        D_CTRL_NEXT = 0;
      }
    } else if (next_high == 1) {
      digitalWrite(D_CTRL_NEXT_PIN, LOW);
      next_high = 0;
    }

    if (D_CTRL_PREV > 0) {
      Serial.println("D_CTRL_PREV press");
      int delay_plus = 150;
      if(D_CTRL_PREV == 1) delay_plus = 250;

      if (delay_time == 0) {
        delay_time = millis();
        digitalWrite(D_CTRL_PREV_PIN, HIGH);
        prev_high = 1;
      } else if (delay_time + delay_plus <= millis()) {
        digitalWrite(D_CTRL_PREV_PIN, LOW);
        prev_high = 0;
        delay_time = 0;
        if (D_CTRL_PREV == 2) {
          D_CTRL_PREV = 0;
        } else {
          D_CTRL_PREV = 2;
        }
      }
    } else if (prev_high == 1) {
      digitalWrite(D_CTRL_NEXT_PIN, LOW);
      prev_high = 0;
    }
  }
}

[tomaskovacik]

is it working without your changes ?

[istals]

Regarding this, how could I test that these buttons are working and I'm receiving those bytes? DUMPMODE and DUMPMODE2 must be enabled?

[istals]

No, not working no data from head unit

[tomaskovacik]

arduino pin 8 is connected to dataout on the radio?

RADIO PIN -> arduino pin DataOut -> digital 8 (ICP1) DataIn -> digital 11(PB3) (10 for atmega328PB) Clock -> digital 13(PB5)

[istals]

Yes, Double checked

[tomaskovacik]

you should see some commands on serial at startup of radio, mainly disable and enable, depends on state in which radio started

[istals]

Looks like my head unit is not providing any data, closing

[tomaskovacik]

radio must be coded to have cdc enabled, try it

http://wiki.ross-tech.com/wiki/index.php/Audi_Radio_Generation_I#Coding