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Thread: iBusRR v2.0.5: 06/01/2008 BMW Doors/Windows/Lights control NEW RELEASE!!

  1. #361
    Maximum Bitrate bes51659's Avatar
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    IBus hackers

    All you IBus hackers, can you help me out on this? (also posted on hacktheibus)

    In my car I have a PC with IBus interface.

    I also have an 8051 controller that will turn on the PC when I unlock the car etc. This one obviously also has its own IBus interface as it will work even if the PC is off.

    When the PC has booted the obvious way to tell the 8051 that this has happened is to send a message on IBus that will not cause for any action in the car. (There are other messages I will send too, but I just wanted to explain the general need)

    After reading this post in great detail I realize that IBus com is more complicated than I expected.

    From format below I thought that the operation defined a specific format including length that had to be fulfilled to make for a valid message.

    <source> <len> <destination> <operation> <..data..> <xor>

    This is what I assumed:

    Match between operation and amount of data is required. If no match there would be no response. Is this really correct? I think not. I think I manage to change unit (km/miles) on the IKE with a 5 byte message (op 0x15) that really should be 9 bytes! Others on this thread seem to have seen the same thing. Maybe some operation has sub-operations with variable length?

    Unique operations independent on source and target id. Is this really the case?

    If I send a message to a specific destination, other devices would ignore the message. Is this true?

    Can I change parity to make the car ignore whatever I am sending? Or can I use a free device id? (which ones?). Or is there a free operation I can "steel"?

    (Sorry for breaking in, but it seemed somewhat related)

  2. #362
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    Can car2pc be used in conjunction with iBusRR to access the ibus?

  3. #363
    Newbie Wanted's Avatar
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    Quote Originally Posted by sokodude View Post
    Can car2pc be used in conjunction with iBusRR to access the ibus?
    I think NO. Because Car2PC is a standalone USB interface, not an COM port emulator device!

  4. #364
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    Quote Originally Posted by bes51659 View Post
    All you IBus hackers, can you help me out on this? (also posted on hacktheibus)

    In my car I have a PC with IBus interface.

    I also have an 8051 controller that will turn on the PC when I unlock the car etc. This one obviously also has its own IBus interface as it will work even if the PC is off.

    When the PC has booted the obvious way to tell the 8051 that this has happened is to send a message on IBus that will not cause for any action in the car. (There are other messages I will send too, but I just wanted to explain the general need)

    After reading this post in great detail I realize that IBus com is more complicated than I expected.

    From format below I thought that the operation defined a specific format including length that had to be fulfilled to make for a valid message.

    <source> <len> <destination> <operation> <..data..> <xor>

    This is what I assumed:

    Match between operation and amount of data is required. If no match there would be no response. Is this really correct? I think not. I think I manage to change unit (km/miles) on the IKE with a 5 byte message (op 0x15) that really should be 9 bytes! Others on this thread seem to have seen the same thing. Maybe some operation has sub-operations with variable length?

    Unique operations independent on source and target id. Is this really the case?

    If I send a message to a specific destination, other devices would ignore the message. Is this true?

    Can I change parity to make the car ignore whatever I am sending? Or can I use a free device id? (which ones?). Or is there a free operation I can "steel"?

    (Sorry for breaking in, but it seemed somewhat related)
    try using a free device id. Use a message like the s/w R/T button when a phone module is present IF you dont have phone module, which is 50 04 C8 3B 40 E7. Using this when there is no phone module should mean no other module on the ibus will react/respond to it and nothing else should be able to send that message either, until a phone module is connected that is.

  5. #365
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    Quote Originally Posted by sokodude View Post
    Can car2pc be used in conjunction with iBusRR to access the ibus?
    I believe with the latest version of car2pc you can use it with ibusrr (http://indashpc.org/new/docs/Car2PC_...3_for_BMW.html) but I got the car2aux and reslers'.
    Nice pic of the dispaly working on the e46 ^.

  6. #366
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    Is there anyway of Parsing the =$OBCSPEED$ data and returning a MPH value rather than KPH?
    At the moment I am simply displaying the $OBCSPEED$ variable on a screen but, being in the UK I would prefer to use MPH. Could I use the EVAL function to divide this value by 0.621 and return it to another variable?

  7. #367
    Maximum Bitrate bes51659's Avatar
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    Thanks for your help!
    I have now used NavCoder to make sure there's no message conflicts!

  8. #368
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    any updates ? esp on the crashing issues?

  9. #369
    Newbie Biggles's Avatar
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    Hello!

    I am trying to use IbusRR for my own setup but I have hit one major snag:

    I cannot figure out how to set up IbusRR to *receive* custom ibus messages and pass it on to RoadRunner.

    Basically I need to be able to send button press events from the factory HU *to* RoadRunner - just as it works with the steering wheel buttons.

    Can I do this?

    Cheers,

    /Erik

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