2006 Prius MFD GVIF Video Input

<div class='quotetop'>QUOTE(theforce @ Dec 20 2006, 11:14 PM) [snapback]364921[/snapback]</div>

Thanks for the test. You just elminated a lot of guess-work for non-NAV owners. If you get a chance (next time you take MFD off), can you just unplug M15 and leave M16 intact? Can buttons on MFD switch the screen to Navigation screen? I think it would work because the video signal is coming in from M16 and might not give you the error. I am guessing that M15 is just for the the steering wheel button signals. Thanks.

 

Force,
Thanks by adding some of the terminology I have been lacking. the AVC-LAN communication line is the thing I was trying to say needed to be told that a NAV, or other device was present. What I am interested in is what the limits of that system are or just how many things can be added to that network. I spoke with eflier about this and he was the one that explained this system to me. One concern for me is if we substitute the NAV signal by shutting it off and substituting the GVIF with our own source, say a CAN-View unit, then when we touch the screen with the AVC-LAN network take that touch screen cord and send that information back to the NAV unit? In other words, will our touch screen inputs still activate and deactivate the NAV information while we are really trying to use the CAN-View?

I know this conundrum can be solved by our efforts. Other observations of the MFD and the AVC-LAN network are that we may have a second or even third set of composite video inputs paired with there own audio channels, one GVIF input with it’s own audio channels, and now it seams there may even be an existing independent six pin input for who knows what.

I’ll send an email out to Galaxee to see if her contacts can help us obtain a pin out map of the entire AVC-LAN network or at the very least, a pin out of the MFD. By the very nature of the Fujitsu Ten MFD, and the Denso Navigation unit’s need for versatility to be placed in so many different vehicles with so many specifications, we have a very robust platform to customize to our own desires.

In fact I have read on the internet where someone had a hiccup in the same six change CD player we have and it played a DVD. When I researched it further I got hearsay that in order to save manufacturing cost the many companies just use the same drive and switch a jumper on the board to allow for CD, or DVD, or both. However, at this point it is all just hearsay and I would like to delve into that at a later time as that would be a nice solution for a factory look entertainment system. For myself however, I will most likely install a carputer with a DVD player making this point moot for me.

 

well i don t have Nav, so need a workaround for that. i saw Henry's (hdrygas) CANVIEW version 4 in action and its a nice way to go but still requires the extra screen.

it is very tempting but i still cant see a good way to mount the extra screen plus not sure that i want to go thru the extra steps to connect, disconnect, hide screen, etc.

i already have two ipods and occasionally a laptop that i shuffle around. dont want to add another device to the mix. then again, i guess that is one of the drawbacks to being on the bleeding edge.

 

<div class='quotetop'>QUOTE(DaveinOlyWA @ Dec 21 2006, 11:20 AM) [snapback]365160[/snapback]</div>

I'm actually looking into taking my new screen (As soon as I get it) apart and putting the screen only (very thin) on an actuator to come out of my dash in front of my steering wheel upon startup, and down again when shutting off the car or when activated by a button. This way it will be hidden when I am parked and always ready to help with readings or to impress all of my nieces and nephews. They think I drive a spaceship.

 

<div class='quotetop'>QUOTE(Cheap! @ Dec 21 2006, 01:29 PM) [snapback]365244[/snapback]</div>

Heck, I'm still unconvinced that my Prius isn't one. :lol: It looks enough like a car on the outside, but inside it's just weird. And the way it drives compared to a car? It's just gotta be a spaceship.

Now to insall that warp drive switch under the lid of the closest cupholder on the center bar...

 

<div class='quotetop'>QUOTE(Silver Phoenix @ Dec 21 2006, 02:17 PM) [snapback]365285[/snapback]</div>

Actually, I am working on a Trans-Warp Stealth Drive and a voice activated Earl Grey tea or cappuccino dispenser in the top glove box.

 

behind the steering wheel sounds interesting as far as good line of sight. post some pics when you get it done. i did notice a few times spacing off on the CANVIEW screen when a bit more effort towards navigation was warranted.

 

<div class='quotetop'>QUOTE(theforce @ Dec 21 2006, 10:07 AM) [snapback]365065[/snapback]</div>

Nope, nothing on M15 or M16. I took some photo and found another tiny hidden connector which looks like a CD-ROM audio connector next to M16.




I also took off the frame to see behind the buttons. See below -- behind right buttons (Display / Info):

See below -- behind left buttons (Climate / Audio):

It does not look like we can easily add extra button -- the whole circuit board behind the buttons need to be changed. I am just wonder now... what if I take off that circuit board and take a peek under it? Well, too late now. I put everything back together so next time.

Dennis

 

<div class='quotetop'>QUOTE(Cheap! @ Dec 21 2006, 09:50 AM) [snapback]365052[/snapback]</div>

Cheap,

I think you're right on the touchscreen coordinates. If the nav is connected and active then it will receive the touchscreen commands and interpret them. I've been trying to figure out how the AVC-lan works and I've come across one very interesting project. Buried in these pages are the schematics and source code for an AVC-lan sniffer. This guy has also created a cd changer emulator that allows him to have an aux input. The beauty of this project is that the author uses a microcontroller and has written his own code to conform to the AVC-LAN (IE BUS) communication specification.

As far as the AVC-Lan goes, i think the way it works is that when a device broadcasts information all other devices receive that information. Any given device will take action only if the information is addressed to it. If you take a look towards the bottom of the page there is an example of a touch-screen coordinate transmission to the Nav ECU. It seems that if one were to build the sniffer circuit and send the output to your carPC via serial port you would have access to the touchscreen coo-ordinates. For non-nav owners we would need to emulate the Nav ecu and send the sniffer data to the PC.

NAV owners who want to keep their NAV unit have a slightly more complicated problem. One could solve the problem by placing a circuit reads and retransmits AVC-LAN traffic to the NAV-ecu between the NAV ecu and it's connection to the master device(MFD). If the circuit detects that the carpc input has been toggled, the video switches to the carpc input and all touchscreen co-ordinate transmissions are not sent to the NAV ecu.

An alternative to all this is discovering a second device uses the GVIF input. Below is a listing of devices that I've found so far that I'm pretty sure are programmed into the prius. Some of them are pretty self explanatory others I have no idea what they could be.

Hardware address / Description
110 EMV
120 AVX
128 1DIN TV
140 AVN
144 G-BOOK
178 NAVI
17C MONET
190 AUDIO H/U
1AC CAMERA-C
1B0 Rr-TV
1C0 Rr-CONT
19D BT-HF
1C4 PANEL
1C6 G/W
1C8 FM-M-LCD
1D8 CONT-SW
1EC Body
118 EMVN
1F1 XM
1F2 SIRIUS
230 TV-TUNER
240 CD-CH2
250 DVD-CH
280 CAMERA
360 CD-CH1
3A0 MD-CH
17D TEL
440 DSP-AMP
530 ETC
1F6 RSE
1A0 DVD-P
1D6 CLOCK
238 DTV
480 AMP

The best lead I have is that the DTV (digital TV) seems like a good cantidate based on what I've read from this document. The IC described in this document has a GVIF component built into it...

that's all for now,

-momanz

 

I'm ready to "upgrade" as soon as this is all over and done. I've been anxiously waiting for anything to do on the 2006 screen. I'll be moving to Atlanta is there are any fellow members there.

 

<div class='quotetop'>QUOTE(momanz @ Dec 24 2006, 02:26 PM) [snapback]366338[/snapback]</div>

hello everybody
the guy who made this wonderful development had a good use of some dumps from the avc_lan on my prius thanks to the canview of eflyer (this was done in march 2006).

 

Seems like this thread kind of died. I think a lot of us are very interested in getting CANview or other functions on 2006/2007 prii. Any progress/updates?

Also, this thread had similar discussion and more recent:
http://priuschat.com/index.php?showtopic=25901

Thanks,

Curt

 

<div class='quotetop'>QUOTE(emailcurt @ Jun 28 2007, 02:40 PM) [snapback]469550[/snapback]</div>

Curt (or anyone) did you get any updates here or on other prius chat sites? I am especially interested in 2007 without NAV and the viability of getting the touchscreen inputs as well as displaying.

 

I spoke with Norm, who develops the Canview, and also got an email from Dominic, who has the RGB-GVIF converter. I am confident from both conversations that video can be gotten to the display (from a canview v3 or a PC), though with some expense and some hacked connections perhaps. However, although Ron says it may well be possible to use the same technique he used on the earlier models to get out the touchscreen input it has not been tried and would be an experiment.

If I had a canview v3 to play with I wouldn't mind giving it a try, but since I don't have one, and will ultimately need a v4 if this doesn't work, I don't want to spend $800-900 on the canview v3 and gvif converter only to run into dead-ends, though that price would be worth it if I knew it could work.

I am wanting to do the canview, however I think if I was wanting to do a car-PC I would go ahead and do the video via gvif converter box and just mount a small trackball somewhere on the center console for the mouse input. Unfortunately I don't think the canview can take that sort of input. Actually I'll ask Norm about that though, but it seems unlikely since there's no pointer concept, so even if it could take the input you wouldn't know where you were clicking.

So no real leads at this point...

Curt

 

Thanks for the update!

 

FYI Norm replied back and as I expected there's no real way to use a standard mouse/trackball with canview. Unless Norm sees the demand and wants to put in the significant effort, not sure we'll be able to do this. Frustrating because it's certainly possible, just not enough people want to do it and/or no one wants to do it that has the personal skills to figure all the details out.

Although the market for canview may be small, I feel like a market for a device that interfaces with the MDF and can accept RGB or composite video and can output the touchscreen input to USB or something would be pretty useful - people that want to do a DVD, carputer, canview, front-vision camera, and other applications could all use such a device....

 

<div class='quotetop'>QUOTE(emailcurt @ Jul 16 2007, 12:26 PM) [snapback]479638[/snapback]</div>

I just got my 2007 Prius and I'm definitely interested in getting a CarPC hacked in to work with the MFD. It doesn't look like interfacing with the AVC-LAN should be too bad, mostly just putting together the bus adapter and writing a driver to turn the touch position packets into mouse clicks. If someone put together a box with VGA, DVI, or HDMI in for video and serial or USB out for the touch data, I'd buy one. If you could do it for under $500, I think you'd be able to sell quite a few of them.

Of course, I also need to figure out how to tell the MFD to turn to the GVIF input without a Nav button. Sounds like that might be the tricky bit currently.