Thread: Commell LV-671..

hello,
had anyone of you already have success controlling the GPIO?
I read the pdf's mentioned above in this thread and came to the conclusion that accessing the GPIO through SMBus should be possible.
So I experimented a bit with i2cdetect and i2cdump under linux, but no success so far. The chip simply does not show up with i2cdetect, so I tryed to dump registers directy with i2cdump (with the hw addresses from the pdf), but nothing happend at all.
any hints?

[please excuse my bad english, i am not a native speaker]

Originally Posted by Giuliano

I stopped by MikeH from Carnetix's place today, and tested my LV-671 with the new P1900 19V.....

Great news!! So when will the P1900 and P1290 PSU's be available?

Thanks to Eric, today I received a few very important pieces of information:

1. The specification sheet for the DC_IN power jack on the rear of the board (DC_JACK.PDF).
2. The specification sheet for the W83601R SMBUS GPIO chipset, which we already had.
3. A segment of sample code for reading/writing the I2C bus - appears to be C code, possibly for DOS. (I2C_Sample.txt)
4. The Intel BIOS Modification Program (BMP)

#4 is a VERY IMPORTANT bit of news, and here's why:

The Intel Video BIOS for the on-board Intel Extreme 2 Graphics is intended to be able to be modified by OEMs without the need for the source code.

What this really means:

If you want to use a LVDS LCD panel, and it has a non-standard resolution (like.. 800x480), I now have the correct utility that should allow me to enter in custom LCD panel resolutions.


Basically, it lets me extract the VGA bios from the LV-671's system bios, edit the VGA bios to enable custom LCD settings, re-embed the new VGA bios, and re-flash the LV-671's BIOS.


Want to use a non-standard resolution LVDS LCD panel?

Chances are I can now make that happen.


Also, the DC_IN.PDF file is 512k, too large to attach.. but I'll e-mail it to anybody who asks for it.

The Bios Modification Program is also too large, at 12MB.. but I'll e-mail that too, for anyone who wants it. Requires advanced knowledge to be useful, though.

Here's a screenshot from the Intel BMP, with an earlier version of the Intel video bios loaded.

This VGA bios version is included in this driver set:
http://downloadfinder.intel.com/scri...2&DwnldID=8532

The Release Notes states that the driver was released on 3/17/05, which is pretty recent.

The chipset on the LV-671 is the 855GME.

Originally Posted by Giuliano

A segment of sample code for reading/writing the I2C bus - appears to be C code, possibly for DOS. (I2C_Sample.txt)

I was hoping it would be a newer/better sample code than the one Commell gave me a few months ago
( http://www.mp3car.com/vbulletin/show...220#post381220 )
so I compared them, but they are the same.

Originally Posted by Giuliano

The Intel BIOS Modification Program (BMP)
Want to use a non-standard resolution LVDS LCD panel?

Now that's some news, although not so great news if it turns out I can do without the M-ATI10, sure one component less, but 200 bucks down the drain
So is there any good 7" LVDS screens ?

Does BMP have tho opportunity to change almost anyting or is it dedicated to the VGA part only ?

Oh, BTW, have you had the time to try out any of the PCI sound cards ?


/M

Originally Posted by Maximus

I was hoping it would be a newer/better sample code than the one Commell gave me a few months ago
( http://www.mp3car.com/vbulletin/show...220#post381220 )
so I compared them, but they are the same.

Yeah, I think it's the only sample code they got, and I think it's for C/C++ under DOS, not Windows.

However, I am sure there are Windows functions to read/write to SMBUS devices.. we have the device's SMBUS address from the PDF, so that's one piece of the puzzle.

Originally Posted by Maximus

Now that's some news, although not so great news if it turns out I can do without the M-ATI10, sure one component less, but 200 bucks down the drain
So is there any good 7" LVDS screens ?

Does BMP have tho opportunity to change almost anyting or is it dedicated to the VGA part only ?

Oh, BTW, have you had the time to try out any of the PCI sound cards ?

/M

There are some good 7" LVDS lcd screens out there, but whether they're available, and with full specifications, may be another story.. I was looking into it some time ago.


BMP is pretty much limited to VGA bios components for this board, but it's made so it can modify any binary bios files from Intel by using a script.. the script tells the program where the modifyable sections are.

Of course, if you're not an Intel OEM developer, and you don't have the scripts, it isn't of much help.


I was able to get the scripts for the VGA BIOS contained in the LV-671 system BIOS version 1.5, so it should work.

I actually extracted the VGA BIOS (MTG_3181.dat) from the system BIOS image itself, so it's the real thing.


As for the sound card, yes, I did try a Turtle Beach Santa Cruz - the drivers seemed to load fine, but I have to do some further testing to see if it's actually broken... I still had the on-board sound enabled, and I think my speakers might have been busted when I did the test.

Originally Posted by Giuliano

Yeah, I think it's the only sample code they got, and I think it's for C/C++ under DOS, not Windows.

However, I am sure there are Windows functions to read/write to SMBUS devices.. we have the device's SMBUS address from the PDF, so that's one piece of the puzzle.

okay. as written above, i already tried to scan the smbus, but did not find any device at the expected address.
i did this with linux, but there should not be much difference. also i was able to access other devices connected with the smbus (hardware monitor).

did anyone succed in compiling this i2c source? i just get a lot of things 'undeclared'. it would be easyer to implement this by scratch, just by taking a look at the pdfs.

i hope you guys are more successful than i was.

bump

Any further updates on this?

P