Prius MFD Operating System

Discussion in 'Gen 2 Prius Technical Discussion' started by pkhoury, Nov 2, 2007.

  1. oly_57mpg

    oly_57mpg New Member

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    <div class='quotetop'>QUOTE(Rest @ Nov 3 2007, 02:29 AM) [snapback]534241[/snapback]</div>
    Nope. It's Windows CE. After extracting the Kiwi (kwi) navigation files shows the different 'platforms' it's compiled for. It's similar to the Mitsubishi MMCS.

    http://www.mitsubishiforum.com/fb.asp?m=183399
     
  2. pkhoury

    pkhoury Proud TDI owner

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    <div class='quotetop'>QUOTE(hobbit @ Nov 25 2007, 06:44 PM) [snapback]544070[/snapback]</div>
    I couldn't help but ask - what kind of camera do you use for the photos you have on this page, and what settings? I'm still yearning to get closeups with that clarity from my Canon 30D.

    <div class='quotetop'>QUOTE(oly_57mpg @ Nov 26 2007, 03:36 AM) [snapback]544194[/snapback]</div>
    So does the Prius have the same nav system? I'm still thinking that some part of the car runs QNX, per what QNX says.
     
  3. hobbit

    hobbit Senior Member

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    Y'know, I was going to comment on that lithium cell in the page but
    never banged in the text. Presumably it's for some of the config
    memory, like what color you set the screen. Maybe some stored diag
    codes. But on the face of it, the MFD doesn't have to remember a
    whole lot of data itself, it just queries the car.
    .
    _H*
     
  4. statultra

    statultra uber-Senior Member

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    hobbit i was reading about ur mfd disection, would u happen to know if the 01-03 is made by fujitsu ten too
     
  5. alanh

    alanh Active Member

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    I've looked at the Prius LOADING.KWI, and I don't see any references to Windows CE like in the Mitsubishi example. The executable LOADING file has a different format than the other KWI data files. See section 30 of the standard. The modules contained in this file can be for any binary platform.
     
  6. hobbit

    hobbit Senior Member

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    Forgot to mention the camera stuff, since it was asked. Sony DSC-V1
    point-n-shoot but I usually have it in full manual for this stuff,
    usually using the self-timer for better stability and/or if I need
    to get my hand back into the shots. 5.1 Mp, and usually reduced
    to 1024x768 which actually helps clean up noise a little bit, and
    then minimal postprocessing for contrast and sharpness.
    .
    This camera does *not* have great closeup, i.e. no macro... best
    it can do is .1 meter and I can't zoom in too far or the focus
    range goes all wacko. So for the really tight stuff I often
    crop the relevant piece out of the original and gain a magnification
    effect that way.
    .
    It does okay, but I wouldn't mind better battery life, taller zoom
    and possibly sharper glass ... so I'm considering going shopping
    again soon.
    .
    _H*
     
  7. plusaf

    plusaf plusaf

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    i could make some really uneducated guesses, but i'd do better to ask, "what would the car need to keep stored in RAM if all external dc power [drive and basic 12v system] supplies were disconnected?

    mileage? sorry, i AM guessing here... black box info? VIN number? legal stuff?

    your turn...
    ;)
     
  8. alanh

    alanh Active Member

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    Unless it's stored somewhere else, the MFD does store lot of data: telephone book, stored navigation locations and preferences, plus the A/C settings and various reminder settings (which I don't find all that useful).
     
  9. oly_57mpg

    oly_57mpg New Member

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    Right, the KWI is simply the container. However, the files and their formats within the file are compiled against a specific architecture. When, if I-5 re-opens, I ever get back to my car, I'll double check the kwi file.
     
  10. pkhoury

    pkhoury Proud TDI owner

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    I actually started using manual focus more often, and now I'm getting pictures that look damn close to yours - I have a Canon EOS 30D. Battery life is awesome - even with auto-shutoff, I can keep it on for 1-2 weeks at a time before the battery drains.
     
  11. pkhoury

    pkhoury Proud TDI owner

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    I'm thinking the Mileage is stored in EEPROM, considering that it would be something more permanent and not suspectible to power interuptions. They could use FLASH, but I doubt it because EEPROM is usually more fault tolerant.
     
  12. oly_57mpg

    oly_57mpg New Member

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    Well, my apologies to everyone. I was completely wrong. When I looked through the LOADING.KWI from my 2005 navigation DVD, the text data is not in UTF. This means that it's not in a Windows format.

    00013cb0 73 2e 0d 0a 57 61 74 63 68 69 6e 67 20 74 68 69 |s...Watching thi|
    00013cc0 73 20 73 63 72 65 65 6e 20 77 68 69 6c 65 20 76 |s screen while v|
    00013cd0 65 68 69 63 6c 65 20 69 73 0d 0a 69 6e 20 6d 6f |ehicle is..in mo|
    00013ce0 74 69 6f 6e 20 63 61 6e 20 6c 65 61 64 20 74 6f |tion can lead to|
    00013cf0 20 61 20 73 65 72 69 6f 75 73 20 61 63 63 69 64 | a serious accid|
    00013d00 65 6e 74 2e 0d 0a 4d 61 6b 65 20 73 65 6c 65 63 |ent...Make selec|
    00013d10 74 69 6f 6e 73 20 6f 6e 6c 79 20 77 68 69 6c 65 |tions only while|
    00013d20 20 73 74 6f 70 70 65 64 2e 0d 0a 53 6f 6d 65 20 | stopped...Some |

    I'll bet that you guys are right and that it's running QNX or some other non-windows RTOS.
     
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