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usb device not detected in evm 6437

Rutcha ghatpande
Prodigy 100 points
Other Parts Discussed in Thread: TMS320DM6437

hello,

i am using evm 6437 dvdp.

when i try to connect the usb cable between pc and the board it says usb device not connected .

what could be the problem?

is something wrong with that port or the the processor IC tms320dm6437?

can anyone give me the schematic of the 5 pin usb port?

thankyou,

rutcha.

  • 0
    Prodigy 30 points

    Hi,
    I have used this and this works. Now it depends how you have configured DM6467 as a device (not host) . In my case I used gadgetfs and installed gadgetfs module. Take a look at these configurations. There is nothing wrong with the hardware,

    - Neeraj

     

  • 0 in reply to Neeraj
    TI__Mastermind 37340 points

    neeraj

    Did you mean DM6437 as opposed to DM6467?  FYI, For DM6437 there is a DSP based driver and for DM6467 there is a Linux based driver.

    Unfortunately, I am not familiar with DM6437 to offer better advice; you may want to check if EVM is configured to operate ad USB master or USB slave.

  • 0
    TI__Guru 64540 points

    Rutcha ghatpande said:

    i am using evm 6437 dvdp.

    when i try to connect the usb cable between pc and the board it says usb device not connected .

    what could be the problem?

    The USB connector on the EVMDM6437 is for the on-board emulation capability and not used as a USB interface to the DM6437 itself.  In fact, the DM6437 does not even have a USB peripheral on it at all.

     

     

    Rutcha ghatpande said:

     

    is something wrong with that port or the the processor IC tms320dm6437?

    As mentioned above, the TMS320DM6437 does not have a USB peripheral on it.

     

     

    Rutcha ghatpande said:

     

    can anyone give me the schematic of the 5 pin usb port?

    Absolutely.  You can find the schematic of the EVMDM6437 from the manufacturer's (Spectrum Digital) support web site found here.

     

    If you need USB functionality from the DM6437, TI does offer a device to expand the capabilities of the DM6437 with USB called the TUSB6020 found at its Product Folder.
    In addition, there is an EVM for the TUSB6020 called the TUSB6020 Product Development Kit which connects to the EVMDM6437 along with DSP/BIOS driver support.

     

  • 0 in reply to BrandonAzbell
    Prodigy 100 points

    Hey thanks Brandon,

    this issue has been solved already..

    There is a usb device for dm6437 for communication betw pc and the board. (loading the program from pc to the board)

    Rutcha.

  • 0 in reply to Rutcha ghatpande
    Prodigy 50 points

    Hello,

    We have the same problem with one of ours TMS320DM6437 EVM board (Spectrum Digital).

    When we connect theEMU-USB connector, after power on the device, windows is unable to detect it.

    We don't see this device in the control panel-device manager.

    And when we launch CCS 3.30 platinum version, CCS try to enumerate the usb board without success and tell us to ignore it...

     

    Texas Instrument has developped the TUSB6020 Evaluation Model. Could it be used instead of the EMU-USB ? Could it be used to load a program to the board ?

    If I put the board in a PCI slot and configure correctly SW1 and SW2 switches, could i load a program like the same way with emu-usb and use the debugger ?

    Johan.

  • 0 in reply to Johan D
    TI__Guru 64540 points

    Johan D said:

    We have the same problem with one of ours TMS320DM6437 EVM board (Spectrum Digital).

    When we connect theEMU-USB connector, after power on the device, windows is unable to detect it.

    We don't see this device in the control panel-device manager.

    And when we launch CCS 3.30 platinum version, CCS try to enumerate the usb board without success and tell us to ignore it...

    This sounds like a driver issue, in the sense that one appropriate for the TMS320DM6437 EVM EMU-USB is not installed.

    The TMS320DM6437 EVM support site has a software link.

     

    Johan D said:

    Texas Instrument has developped the TUSB6020 Evaluation Model. Could it be used instead of the EMU-USB ? Could it be used to load a program to the board ?

    If I put the board in a PCI slot and configure correctly SW1 and SW2 switches, could i load a program like the same way with emu-usb and use the debugger ?

    The TUSB6020 EVM is not meant to replace the emulation capability of the on-board EMU-USB of the TMS320DM6437 EVM.  It is meant to provide USB OTG capability for the DM6437.

  • 0 in reply to BrandonAzbell
    Prodigy 50 points

    Hello,

    Unfortunately, this is probably not a driver problem.

    I have already successfully connected an other DM6437 board on the same computer.. .

    The EMU-USB interface may be damaged...

    How could be tested this emu-usb ? With the JTAG Emulation Header cable? With the PCI connector?

    Is there an other way to program the demo board?

    Best regards...

  • 0 in reply to Johan D
    TI__Mastermind 41665 points

    Johan D said:
    How could be tested this emu-usb ? With the JTAG Emulation Header cable? With the PCI connector?

    Connecting to the same PC with a known good board that connects as you have done is the easiest test of the on board emulation, unfortunately neither the on board emulation or the PCI interface give you insight into the on board emulation that I know of, though if you had a stand alone emulator through the JTAG header you could prove that the device on the board can be connected to and is in a good state. Just one suggestion if you do believe the USB emulation to be the culprit here, I have seen boards where the mini USB connector was ripped lose, so you may want to verify that the actual USB connector is solidly on the board.

    Johan D said:
    Is there an other way to program the demo board?

    In general the only other practical way to develop for the EVM would be through a stand alone JTAG emulator such as the XDS510 USB.