Peugeot 308CC (T7) central display problem - MTCD Android Head Units General

Here's my problem: I own a Peugeot 308CC and a MTCD head unit with Android 9 (Malaysk).
When I set in the Peugeot diagnostic software that a car radio is connected, the radio station is displayed, but it is overlaid by a "Vocal" display (in radio mode). If I set that no radio is connected, the display only consists of the clock (which I could live with), but I can no longer make any settings on the on-board computer (time, language, ...).
Can anyone tell me which settings allow the on-board computer to be operated, but the "Vocal" display does not show up permanently.

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XDA2s, Holux GR-230 & Tomtom Nav 3

Hi All,
I am not having any lock setting up XDA IIs, Holux GR-230 GPS and Tomtom 3.07 navigator. If someone has managed to get these 3 talking, then i will be grateful if the settings could be shared with me.
thanks
gosh28us
O2 XDA2s
ROM Ver: 131.00 WWE
Radio Ver: 1.06.00
ExtROM Ver: 1.31.139WWE[/b]
Have you checked which COM port the GR-230 is using and matched it with the tomtom software?
http://www.holux-uk.com/Products/gr-230/download.shtml gives a download for checking out what COM port is used
No, i haven't. I will do that.
thanks
gosh28us
let me know what you find
For what its worth - My Tomtom GPS receiver uses Bluetooth Serial port on COM6: but I know this can be changed to Bluetooth COM5, serial on COM1 and also COM9
XDA2s + Tomtom3 + Holux 230
I have this exact combination working.
Use COM5 BT
Set the type to SIRF 9600 (38400 proved unreliable)
then tick the box on the left.
If you go back to the 1st tab, you should see it's communicating.
Cheers,
Hal
GPS viewer hasn't been able to identifier the port to be used. I have tried the combination given by Hal and that wasn't successful either. I'm now going through all the possible tomtom GPS cobinations and will update you as soon as my luck shines.
Thanks in advance for all your help.
gosh28us
When you pair the gps with your pda do you get the message that a serial port profile is available for the device?? Mine does this and it sets itself up as com 5. I am not sure if beams affects this, I always switch off beams under settings/conncetions/beams, if a wired gps is used this is essential as the beams takes com 1 and wont allow a wired gps to work if enabled.
No. i don't get that message on the XDA2s although I remeber that on the XDA2.
I have downloaded Holux GPS viewer on my PDA but when i scan, it doesn't find any com port
I have deleted the Holux GPS (GR-230) and paired again, went to the Bluetooth screen which shows HOLUX GR-230: SPP slave and it connects and shows the duration clock.
I am and have been changing the options on the TomTom GPS screen, alwyas tick the big box but when i go to the status screen don't see any firing between the attenna and the PDA icons.
thanks
On the XDA, go into bluetooth settings and make sure that under the services tabe, the "Serial Port" is enabled. Unless this is enabled, you won't have COM5 & COM6 on your XDA
Also, once you pair with the device, try exploring it & seeing what services it can provide
Weasel, I have done what you have said below and yes, COM5 & COM6 are among the list when i check the TomTom GPS screen 2nd box.
I have been using different options from the 1st box, ex. TomTom Wireless GPS, TomTom Navigator GPS etc etc, combining with COM5 & COM6 etc etc from the 2nd box but still the status screen doesn't show any communication between the antenna & the PDA.
With regards to the Holux GR-230, should i do anything different apart from turning it on whiles i'm trying to do the setup?
thanks
gosh28us

How do mtcmusic, mtcradio send out status messages to car

Hello,
I've got an Eonon MTCB unit (with Malaysk 4.4.4) on a Opel/Vauxhall Astra H (MK5).
The way the car is designed means that I get to keep my old LCD display in the dash, positioned above the MTCB unit.
The original car music player displayed current song title or radio station name on that display.
The MTCB unit displays much less useful info like "MUSIC MM:SS", "RADIO", "AVIN" or "OTHER", depending on current input source, but never
something specific like song name or radio station name.
I would like to reverse engineer how the unit sends out these messages so that I can send my own, more meaningful ones.
The unit came with a CAN bus decoder, so I bet that's how messages go out. However, regarding the software side I have no clue.
Does anyone have an idea how I can go about this?
Someone tried to change that thing. There other threads to. But no solution at the moment because it takes a very long time (I believe to read that) :/

Android Auto not using car GPS Antenna?

Hey Guys, i searched located a few threads but cant find a definite answer...
I got Ford Sync 3 with AA.
My car headunit have factory GPS software and antenna on the car.
Now i have updated my headunit to firmware with AA and CP.
When connecting AA everything works fine, but when i go to Google Maps it always require me to turn my phone GPS to High Accuracy (on) mode.
i was under the impression if my car have built in antenna it will utilize that...
Is it a case where for my car specifically (Ford 2016 Mustang) if built in NAVI is off then there is no power to the GPS antenna? or is it a setting i cant seem to find within AA?
thank you.
I am using a Pioneer headunit connected with the car's built-in GPS antenna, and I frequently use Android Auto. My experience is that AA used the phone's GPS antenna, not the one connected to the headunit (which should have better reception).
AA very probably uses the phone's antenna because the good people at Google expect some headunits to not have a GPS antenna connected (after all no GPS on your headunit is a major selling point for using AA), and they have no way to check that by software.

Help Identifying head unit

Hi all,
I just purchased and installed a Hizpo JBY-6201 head unit and it is installed and working with a few minor issues.
I am trying to work out what type it is - there is talk of MTCB and MTCD but I cant tell from my unit ?
MCU Version "5.3.19-94-10-ED6101-170424"
Further, if I dig into the extra settings under android car, I get a to choose a "Model" - is this to do with the CAN-BUS capability ?
Does anyone know which VW option I should choose for a VW Polo GTI 2006?
VW (5.3.19, CONFIG, Color, BC6, NODVD, Rohm37XXX, TDA7786)
VW ODB (SS) (5.3.19, CONFIG, Color, BC6, NODVD, Rohm37XXX, TDA7786)
VW ODB (RZC) (5.3.19, CONFIG, Color, BC6, NODVD, Rohm37XXX, TDA7786)
TIA.
M.

[MTCD/E/P] CanBus app reverse engineering

I have started reverse engineering the HCTCanBus app.
The reason was that I wanted to display the outdoor temperature in my custom launcher.
But one thing in advance that was only possible because I built my own cunBus box. The radio can only process data it receives and the original canbus boxes only have a very limited number of canBus messages integrated.
The data from the box is transferred to the Android system via the serial port "/dev/ttyV0".
What I found out was that the steering wheel buttons are not transmitted to this serial port.
But all other data with the correct format is transferred there and processed by the HCTCanBus app.
So we can use it to implement our own messages.
I also managed to send data back to the box.
The serial port is not used for this...
The original app processes data on the door contacts, air conditioning, parking sensors and TPMS.
These are at least the things I've found out so far.
In the original app is the handling of the data for the different settings in the factory settings for the canBus.
For each manufacturer there is a file that decides what the message means and how it is to be processed.
I own a Chrysler 300C and use the setting "30 CHRYSLER(Bagoo)".
I have only worked on this. Because I have no access to the data of the other manufacturers.
To read this data from the code is almost impossible with decompiled code, at least for me...
So far I only integrated the door contacts as activity.
For the other displays my car simply does not provide any data (air conditioning) or I have not yet been able to identify the correct can messages (TPMS, radar sensors)
What I have integrated, because of which I have built my own box, is a settings window where I can for example set the events when the radio is switched on or off.
I have uploaded the current state of my work to github.
Even if I am still in the middle of my work it might be interesting for some people.
I would be happy if others would join in and we could integrate the canBus message for the other manufacturers.
github.com/zebbel/MTCD-E_CanBus
Sorry but it's annoying to post stuff here when you can't even insert links...
Hey, zebbel.
You're up to a pretty good start, keep up the good work!
I've also started research in that direction, decompiled HCTCanBus.apk with apktools and started looking at smali code.
(It's pretty readable to my surprise)
But soon I came to the conclusion that there is not much we can do from only the android side.
Canbox itself translates commands it gets from UART into CAN messages using custom firmware on the box. And that is the problem - we don't have access to it.
So, to extend the functionality of "HU-CanBox-Car" system we would need to re-engineer not only CanBox hardware (I've seen some reverse-engineered schematics laying around the forum somewhere) but also it's firmware. A hell of a lot of work, if you ask me...
PS: I personally own Citroen DS5 with HU from Peugeot 508, PX6 platform 4G/64G and PA-SS canbox module. The good thing that almost everything working oob. The sad thing is my pretty "analog" dash clock are not working - That's why I start digging into this, just to find that Canbox App ignores the Time changes completely (e/g not sending to CanBox any information on Clock updates)
Hi All,
I have been doing work on this already, see my post's here, we already have the canbus apk sources.
https://forum.xda-developers.com/showpost.php?p=81859661
darkspr1te
Hi, totally new on this just a questions with a new head unit 8227L and steering control. My car is a jeep compass 2008, the android unit os 9.1 XY Auto 3.3 seems to have some factory set options with can bus for many models but not for the jeep compass, I already identify the cables can high and low and imagine they need to be connected to key 1 and key 2 on the head unit but at the moment no luck with the right can bus selection, any ideas?
Hector114 said:
Hi, totally new on this just a questions with a new head unit 8227L and steering control. My car is a jeep compass 2008, the android unit os 9.1 XY Auto 3.3 seems to have some factory set options with can bus for many models but not for the jeep compass, I already identify the cables can high and low and imagine they need to be connected to key 1 and key 2 on the head unit but at the moment no luck with the right can bus selection, any ideas?
Click to expand...
Click to collapse
Is it an MTCD and is the question related to canbus reverse engineering or solving a problem with your headunit.
No, 8227L units are not MTCD/E.

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