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Thread: Stand alone tranmission controller

  1. #31
    Fuel Injected! steveo's Avatar
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    sorry man i've been pretty busy, but i looked over your code just in a text editor, i can definitely help you out and get it rocking

    i will work on establishing a properly checksummed and flow controlled serial datastream, as well as managing your static data a bit better so this thing is tuneable without recompiling.

    what you have to realize is when you do something like

    if(variable_a > 200) whatever; // select gear one
    if(varable_b > 200) whatever; // select gear two

    the behavior of the compiler is unpredictable in that circumstance, it may place 200 in static data addr. and re-use it for both compares, or it may not. being able to edit those in-place in the bin is nearly impossible now. however if you:

    const int const_a = 200;
    const int const_b = 200;
    if(variable_a > const_a) whatever;
    if(variable_b > const_b) whatever;

    unless you have a very heavy optimizing compiler, you're in the clear; you just locate that static data and you're good to go.

    but a better solution would be (which in a simple compiler and arch, usually ensures the data ends up being in a sequential block):

    struct calib {
    const int const_a = 200;
    const int const_b = 200;
    };

    if you're planning any major changes to it in the short term, let me know, i dont want to go fixing this one if you already have another version in the works.

  2. #32
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    Originally, I was only looking for something g for myself to play with but the more I get into it it could be marketed to a point. As you can probably tell my C skills are lacking but they work. I think for now I will only modify the epc section and add the rpm forced shift/shift light option.
    If it don't fit force it, if it don't force fit f&%@ it!

  3. #33
    Fuel Injected! steveo's Avatar
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    can you finish what you're working on then send me the updated version? since you have no revision control, im hesitant to make any changes for you while you're also working on it, as merging may be difficult.

  4. #34
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    I'll get you what Im working on in the next day or two.

    Buddrow
    If it don't fit force it, if it don't force fit f&%@ it!

  5. #35
    Fuel Injected! steveo's Avatar
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    alrighty

    should get some revision control going sooner or later too, that really helps even just for you, so you can see all your code changes

    github is good for that, it's free unless you make a private repository (which sounds like you would)

  6. #36
    Electronic Ignition!
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    Im intrested in one if you are looking for a market, prob about a month from having 4l60e ready to go in tho

  7. #37
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    Rodeo,

    I am in the process of bench testing right now. A month or so will hopefully give me enough time to get all(or most) the bugs worked out by the time you're ready.
    If it don't fit force it, if it don't force fit f&%@ it!

  8. #38
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    I am an stm32 guy but I would love to learn from you, I am interested in TCM in general (that's on top of my interest in PCM/ECU/EMS etc)

    First things first, did you decide which license you are using? Is the software going to be published anywhere? Is it published anywhere?

    Same about the hardware: do you have the PCB files published, do you intend to publish them?

    Eventually I would love to integrate something like that into my ECU project. Poke me if you would be interested to join forces :)

  9. #39
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    Quote Originally Posted by rusefi View Post
    I am an stm32 guy but I would love to learn from you, I am interested in TCM in general (that's on top of my interest in PCM/ECU/EMS etc)

    First things first, did you decide which license you are using? Is the software going to be published anywhere? Is it published anywhere?

    Same about the hardware: do you have the PCB files published, do you intend to publish them?

    Eventually I would love to integrate something like that into my ECU project. Poke me if you would be interested to join forces :)
    rusefi,

    I am on the fence currently as to how I will put this project to market, be it an open source item or commercial product. We can talk about your plans and take it from there. I am currently collaborating with another user on this forum so I have his work to consider as well when deciding which way to go. I am interested in what you have going on, I'll have to check out the details of your project. PM me and we will talk.

    Buddrow
    If it don't fit force it, if it don't force fit f&%@ it!

  10. #40
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    Any progress?

  11. #41
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    Quote Originally Posted by Munchies View Post
    Any progress?
    Yes and no. Life has been a big interruption as of late so I havent had much time to work on it. How close are you to needing one?

    Buddrow
    If it don't fit force it, if it don't force fit f&%@ it!

  12. #42
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    Just dropping an update, or a non-update at this point. Not much has progressed due to work and home life. Looking to have some free time this month(June) so hopefully I can get this thing on the road for some rubber burning fun. As always, Im open to questions and suggestions on this project. Thanks for reading.

    Buddrow
    If it don't fit force it, if it don't force fit f&%@ it!

  13. #43
    Carb and Points!
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    did you get the trans controlers done ? if so how much and how do I get one or what can you tell me on where to get one.......

  14. #44
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    Skully,

    Progress had slowed slightly. It's not quite ready for prime time just yet. If you wanted a barebones absolute minimum setup it would fit the bill but this thing has grown into a bit of a monster and now I can't stop until the monster is happy lol.

    As for price and availability, I will post a link to the web site for product promotion and sales when the time is right. The price will be competitive with current units on the market but will likely include items not included in those units like tps setup, wire harness, etc, which mostly seem to be add-ons to the kits Ive seen. I will also be offering kits for the end user to build their own wire harness or request a custom harness as opposed to the generic harness that will likely accompany the unit.

    What is your intended application, street,strip, street/strip? What trans will you be using, The 4L60E or 4L80E? Any features you would like that you don't see on current market units?

    Buddrow
    If it don't fit force it, if it don't force fit f&%@ it!

  15. #45
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    Well Steveo, you would be proud of me. I banged away at TunerPro and the tcm board until I got serial comms working and a single element(TPS Volt) dash working last night about the time my eyes slammed shut lol. Anywho, tonight I'm gonna finish my adx and dash setup then it's off to the xdf side. Woo Hoo!
    If it don't fit force it, if it don't force fit f&%@ it!

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