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Thread: M4 ATX USB connection

  1. #1
    Live and Kickin'
    Arby's Avatar
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    M4 ATX USB connection

    Has anyone actually got the USB connection on the M4 ATX to work? I just get a popup that says "USB Device Not Recognized".

    The documentation sucks, I can't find any information anywhere. Are there any drivers?

  2. #2
    Variable Bitrate Fox_Mulder's Avatar
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    It runs a PIC18F2450 that interfaces with the USB as a virtual com port.

    Unzip the m4atx.zip file. There should only be one file inside m4atx.inf.
    Plug in the M4 atx if you havent already done so.
    When the found new hardware wizard pops up, select install from a specific location.
    Click next and select this attached inf file.
    After thats done it should appear as a com port (ie COM4).

    But if the new found hardware wizard doesnt pop up when you plug in the M4 ATX then it might be a bug in their firmware.......

    Maybe you can use hyperterminal to communicate with the m4 atx, but I dont know any of the commands due to lack of documentation.

    I will try this as well as soon as Laci, Andrei and I can figure out why my m4 doesnt send the motherboard pulse when my m4 is in the hardoff mode, and I can get a suitable header for the cable to plug into the motherboard's usb header.
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    Fox Mulder
    2004 Toyota MR2
    Intel Dual Core 2.0Ghz 1Gb DDR2 160GB SATA2 M4ATX Xenarc 700TSV TS BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD

  3. #3
    Variable Bitrate Fox_Mulder's Avatar
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    Hmm I think the pinout on the m4 manual is wrong for the USB connectors.

    The M4 Manual says that:
    Pin 1 is 5v
    Pin 2 is D-
    Pin 3 is D+
    Pin 4 is GND
    Pin 5 is GND

    Looking at the datasheet for the 18F2450, Pin 16 is D+, pin 15 is D-

    But following the pins with a multimeter I get the following:

    Pin 3 is connected to the PIC at pin 16 (D+).
    Pin 4 is connected to the PIC at pin 15 (D-).
    Pins 1 & 2 are connected to each other.
    Pin 1 (and thus Pin 2) is connected to ground.
    Pins 4 & 5 are not connected to each other or ground.

    Pins 6,7,8,9 seem to be labelled correctly.

    I have attached a revised pinout.

    edit: I have emailed mini-box to see if this is correct, it could be the reason you are getting the USB device not recognised error.
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    Fox Mulder
    2004 Toyota MR2
    Intel Dual Core 2.0Ghz 1Gb DDR2 160GB SATA2 M4ATX Xenarc 700TSV TS BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD

  4. #4
    Variable Bitrate Fox_Mulder's Avatar
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    Yes the drawing in the manual is not correct.
    It should be
    5 4 3 2 1
    N/C 9 8 7 6
    Because pin 1 on J8 footprint is marked with silkscreen.

    THANK YOU for your observation!
    Laci
    Mini Box have confirmed my findings, so please re-wire your USB plugs!
    Fox Mulder
    2004 Toyota MR2
    Intel Dual Core 2.0Ghz 1Gb DDR2 160GB SATA2 M4ATX Xenarc 700TSV TS BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD

  5. #5
    Variable Bitrate Fox_Mulder's Avatar
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    I managed to connect my M4 to the USB ports using my pin diagram and it is recognised as a HID insde the device manager, not too sure how we are going to be able to talk to the M4.

    Laci from Mini Box told me
    Soon we will have a USB software which you can use for programming the time tables(and a lot of other parameters) as you wish.
    Hopefully the software isn't too far away!
    Fox Mulder
    2004 Toyota MR2
    Intel Dual Core 2.0Ghz 1Gb DDR2 160GB SATA2 M4ATX Xenarc 700TSV TS BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD

  6. #6
    Newbie jimmler's Avatar
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    I'm thinking this board was released WAY before it was ready.
    -Jim
    Nipomo, CA

  7. #7
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    Quote Originally Posted by Fox_Mulder View Post
    I managed to connect my M4 to the USB ports using my pin diagram and it is recognised as a HID insde the device manager, not too sure how we are going to be able to talk to the M4.

    Laci from Mini Box told me

    Hopefully the software isn't too far away!
    How is it that you are able to communicate with someone inside Mini-box when I can't get them to respond to my initial Customer Support request almost two weeks ago or my second inquiry from about one week ago?????

  8. #8
    Newbie jimmler's Avatar
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    No kidding! I have fired off at least 3 notes after getting my automated "your case number is" email. No reply on any of them. It's bad enough there's issues with the power supply, but then to not respond to inquiries just adds insult to injury. Next time I'm going with an Opus.
    -Jim
    Nipomo, CA

  9. #9
    Variable Bitrate Fox_Mulder's Avatar
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    I have been communicating with Laci from mini-box: tlaci AT mini-box.com
    Fox Mulder
    2004 Toyota MR2
    Intel Dual Core 2.0Ghz 1Gb DDR2 160GB SATA2 M4ATX Xenarc 700TSV TS BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD

  10. #10
    Newbie GhostRiderDad's Avatar
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    how did you hook up the on/off motherboard wire from the PS to the motherboard? I've heard of a few things people use here, but I would like to know what your solutiuon was so that I can replicate it on my end. Care to help a fellow carputerer out?

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