Thread: Renault "Tuner List" Head Unit/CD changer hacking - Controls

Originally Posted by Vicne

Well, it works !

I knew software was easier than hardware :-)

Congratulations Vicne..

Something is broken in my interface or in my code (or in my brain) sometime i see in the display TR1 (open champagne) but after few seconds ERROR (close champagne)(and sometimes the HU ask my the SECURITY CODE ) , i will investigate tonight.

Again congratulations...
pep

Originally Posted by peppuz79

Congratulations Vicne..

Something is broken in my interface or in my code (or in my brain) sometime i see in the display TR1 (open champagne) but after few seconds ERROR (close champagne)(and sometimes the HU ask my the SECURITY CODE ) , i will investigate tonight.

Again congratulations...
pep

Hi Peppuz, this will make think me, is possible that there was some connector ins't connect good and make faults connects? (excuse for my english !)
Vicne do you any problem after some minutes? Is possible that the HU if not receive by CDC the progress of track go in error?

Now I've found the MINI ISO connector here in local, now I must buy this and the MAX 232 or I can buy MAX233? What's the differences of schematic whit MAX233? Only the capacitor?

Thanks in advance!

P.S. Peppuz where are you from? You're Italian? Do you know M2TC?

Originally Posted by peppuz79

Congratulations Vicne..

Something is broken in my interface or in my code (or in my brain) sometime i see in the display TR1 (open champagne) but after few seconds ERROR (close champagne)

:-)
I had a few errors in the beginning, either because I wasn't acknowledging its frames or because I didn't switch to "PLAYING" when the HU sent "START_PLAY", but now it's ok.
Maybe you can test with my code and see if it works. If it doesn't, it probably is a hardware problem...

(and sometimes the HU ask my the SECURITY CODE )

:-o

I never had that ! I thought it was only needed when HU was disconnected from power (I never disconnected it though :-)).

Good luck

Originally Posted by slimmegane

Vicne do you any problem after some minutes? Is possible that the HU if not receive by CDC the progress of track go in error?

Not a single problem with the last version. After the init sequence, I simply sent the same PLAYING frame with times 00:00:01:00 / 00:00:01:00 over and over again.
I could see it worked, then leave the garage, fetch the camera, come back, take a few shots and then I stopped...
All in all, I think it has played for around 2 minutes without a problem...

Oh, however, I observed a strange thing : after that, I reswitched a few times to tuner, reset the emulator to BOOTING, switch to CDC, etc and ended up on TR 1 CD 4 !
In the startup dialog, I only sent CD information about CD 1, so I don't know where the 4 came from... I'll have to investigate that too...

Originally Posted by slimmegane

Now I must buy this and the MAX 232 or I can buy MAX233? What's the differences of schematic whit MAX233? Only the capacitor?

Well, MAX232 is general purpose with 1uF capacitors (see page 17 of the data sheet) while MAX233 has internal capacitors (simpler but more expensive, see page 21 of the same file) and MAX3232 is a low power version using 0.1uF capacitors (or 0.47uF for C2,C3,C4 if powered at 5V).See page 12 of data sheet for wiring and page 9 table 2 for capacitor values...

In the end, any of them will work once wired correctly. Their I/O characteristics are the same. Take care however that MAX232 and 3232 are pin-layout compatible while MAX233 has another pin layout

Hi Vicne, I've buy all component, now I must mount all, but where (which pin) I must connect the SPDIF output of my creative?
Can you post a schematic whithout the CD Changer?

Thanks a lot
Slim

Originally Posted by slimmegane

Hi Vicne, I've buy all component, now I must mount all, but where (which pin) I must connect the SPDIF output of my creative?
Can you post a schematic whithout the CD Changer?

SPDIF input is on pin18 and SPDIF ground is on pin 19. Here's a schema.

Note that the first part of the test is to have your HU allow you to switch to CDC and display TR1 CD1. If that's OK, then you can test the actual SPDIF sound. I myself tested with a Sound Blaster Live Platinium before the Via Epia and both worked OK, so I'm rather confident regarding that.

But whithout the CDC I don't made any test?

Originally Posted by slimmegane

But whithout the CDC I don't made any test?

Sorry, not sure I understand your question.

What I mean is that SPDIF and Serial Port are completely independant :
- You can first wire the serial port, MAX chip, transistor, etc to pins 13 and 14, start the software, then the head unit, and check that you can then change source to CD changer and see the head unit display "TR1 CD1"
- If that works, then you can wire pins 18/19 to a SPDIF source and check that it works too and that you can hear sound through the Head Unit.