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LMX25312570EVAL: Can't load eval board using Codeloader 4 and USB to IEEE parallel printer cable

Eric Hooker
Expert 1445 points
Part Number: LMX25312570EVAL
Other Parts Discussed in Thread: USB2ANY, CODELOADER, LMX2531, LMX2571

The eval board shipped with a 25 pin parallel port cable.  We purchased a Tripp Lite Model # U207-006 USB to IEEE parallel printer cable adapter to interface to the eval board cable.  Has anyone used this to work with the LMX25312570EVAL?  So far, I can't get it to program.

  • 0
    Expert 1445 points
    I found a TI "USB2ANY" adapter. I am having trouble with that as well. How should the port be setup with USB2ANY?
  • 0 in reply to Eric Hooker
    TI__Guru** 110450 points
    Hi Eric,

    If you have a USB2ANY and the adapter board, please follow section 1.1 of below user's guide to setup the connection.
    www.ti.com/.../snau114d.pdf
  • 0 in reply to Noel Fung
    Expert 1445 points

    Hi Noel,

    I don't have an adapter board -- how can I get one of those?  Can I purchase one from DigiKey or Mouser?

    Also, as I wrote, the eval board came with a parallel port cable.  We bought a USB to parallel port adapter but I have not been able to get that working.  Do you have any advice for that?

    So, I would be happy if I could get either one of these methods to work. 

    Regards,

    Eric Hooker

  • 0 in reply to Noel Fung
    Expert 1445 points
    I don't have an adapter board. Where can I get one?
  • 0 in reply to Eric Hooker
    TI__Guru** 110450 points
    Hi Eric,

    we don't ship the adapter board separately, it is usually shipped together with the EVM.
    OK, so maybe you can download CodeLoader from ti.com and use it to program the EVM. I hope it works in Win7 or above.
    Open Codeloader, go to the Port Setup page, select LTP as the Communication Mode.
  • 0 in reply to Noel Fung
    Expert 1445 points

    Noel,

    Thanks but as I wrote above, the eval board came with a parallel port cable but computers don't have those anymore.  I bought a USB to parallel adapter cable but that is not working with the eval board.  I have been using Codeloader and setting the port to LPT but it does not work.  Any ideas?

    I had another TI eval board that came with the "USB2ANY" but no adapter board.  I believe I will have to make my own adapter board or rewire the ribbon cable between USB2ANY and the LMX2531 board.  I thought it would not require all of this monkeying around.

    Eric

  • 0 in reply to Eric Hooker
    TI__Guru** 110450 points
    HI Eric,

    Right, I am afraid you have to rewire the ribbon cable or build you own adapter board. I am sorry about that.
  • 0 in reply to Noel Fung
    Expert 1445 points

    10 pin
    CONN    		 LMX2531
    eval board
    as built    		 LMX2531 EVAL Board MOD LMX2531
    Code loader port setup    		 USB2ANY PINS LMX2571 eval board
    (THIS WORKS)
    1 NC NONE TRIGGER GPIO0 / I2C SDA NC
    2 TRIGGER JUMPER "LE" TO 10 pin CONN PIN 2 LE GPIO1 / I2C SCL LE
    3 NC NONE   GPIO2 / SPI SCLK MUXOUT
    4 DATA NONE DATA GPIO3 / PWM2 DATA
    5 OPEN NONE   3.3VEXT 3.3V
    6 CLOCK JUMPER TO GND GND GND GND
    7 NC     GPIO4 / SPI SIMO TRCTL
    8 LE JUMPER "CLOCK" TO 10 pin CONN PIN 8 CLOCK GPIO5 / SPI SOMI CLOCK
    9 GND NONE   GPIO6 / SPI CS GND
    10 CE NONE CE GPIO7 CE

    Noel: I ended up modifying the LMX2531 eval board to work with my USB2ANY.  Attached is a spreadsheet showing the mods to help other people that may run into this same problem.

  • 0 in reply to Eric Hooker
    TI__Guru** 110450 points
    Hi Eric,

    Thanks, this spreadsheet helps.