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DLPLCR6500EVM: does not show patterns anymore

Jonas Kobbert
Prodigy 70 points

Part Number: DLPLCR6500EVM

We bought a DLP Lightcrafter 6500 Evaluation Module and it does not work properly. We connected a 12-V DC power supply to the power supply connector and the LEDs that indicate that the power supply and configuration are normal light up. The LED that indicates that the DLPC900 is operating normally toggles on and off. The Problem is that there is no pattern sequence displayed. Therefore I wanted to ask what opportunities we have for the further procedure.

  • 0
    TI__Prodigy 440 points
    Hi Jonas

    Have you tried connecting the EVM to a computer with the GUI control software installed? If the EVM is operating normally, the GUI should light up green on its top left corner indicating it was able to connect to the lightcrafter.

    The GUI software should also help in determining if the DLPC900 is configured as desired.

    Best Regards
    Jesus
  • 0 in reply to Jesus Torrado-Diaz
    Prodigy 70 points
    We already tried to connect the EVM to a Computer with the GUI control software installed and the GUI indicated that the EVM and the Computer were connected. Then the GUI began to Switch between the different modes randomly and we were not able to choose one of the modes.
  • 0 in reply to Jonas Kobbert
    TI__Prodigy 440 points
    Hi Jonas

    Does this random switching of the GUI options happen every time you connect your EVM to a PC with the control software? Does the random switching every stop, if so are you able to read the status readout on the left column (below operation mode)?

    Have you tried using another USB cable, or reinstalling the control software?

    Sorry for the many questions but I'm trying to get a handle on your setup to better trouble shoot the problem.

    Best Regards
    Jesus
  • 0 in reply to Jesus Torrado-Diaz
    Prodigy 70 points
    Hi Jesus,

    Yes, the random switching happens every time we connect the EVM to the computer and we also tried different USB cables and reinstalled the software. The random swithcing doesn't stop.
    Best regards

    Jonas
  • 0 in reply to Jonas Kobbert
    TI__Prodigy 440 points

    Hi Jonas

    Sorry for the late replay, I haven't seen any issue like this before, I will ask other engineers on the team for their input and get back to you on Monday.

    I seems like a communication issue, when you go to device managers on windows, is the EVM recognized by the OS?

    Can you use the same USB port with other devices?

    With Regards
    Jesus

  • 0 in reply to Jesus Torrado-Diaz
    TI__Prodigy 440 points
    Hi Jonas


    What is the power rating for your 12V power supply used for 6500 EVM? The power supply must be rated for a max of 7A.


    When you connect the power supply D8 should light up, indicating a the supply was connected. Dose D9 light up too? If it dose does D6 pulse periodically or does D5 light up?


    Verify that the boot hold header J11 and the controller reset header J9 do not have jumpers in them.


    Best Regards
    Jesus
  • 0 in reply to Jesus Torrado-Diaz
    Prodigy 70 points
    Hi Jesus,

    We use a power supply of 12 V with 5 A max. (like it is specified in the user's guide) and the LEDs D8 and D9 light up. D6 pulses periodically. There are no jumpers in J9 or J11.

    Jonas
  • 0 in reply to Jonas Kobbert
    TI__Prodigy 440 points

    Hi Jonas

    You are correct the guide specifies a 12V power supply capable of 5A as a nominal load but it also sais that the power supply requires the capability of supplying 7A max. Its possible that during the startup of the EVM a current draw larger than 5A is happening which causes the 12V rail to drop. Try using a power supply with a max current draw of 7A or more.

    Another suggestion would be to disconnect any video sources, other peripherals connected the GPIO headers and any other equipment running off the 12V line. Then attempt to power the EVM on, wait for about half a minute (while the EVM boots), and then try connecting the USB cable to communicate with it.

    I will explore other potential sources for your issue, let me know how it turns out on your end.

    Best Regards
    Jesus

  • 0 in reply to Jesus Torrado-Diaz
    TI__Prodigy 440 points

    Hi Jonas

    Did increasing the capacity of your power supply fix the issue your were having? If so, or not, please let us know to better help you.

    Best Regards
    Jesus

  • 0 in reply to Jesus Torrado-Diaz
    Prodigy 70 points

    Hi Jesus,

    Sorry again for the wait. 

    Increasing the capacity of the power supply did not fix the issue.

    Best regards


    Jonas

  • 0 in reply to Jonas Kobbert
    TI__Prodigy 440 points

    Hi Jonas

    Ok, seems like it was not a power supply issue, but at least we are using one that is up to spec now.

    Can you tell me what firmware version is on the EVM? When you connect the EVM to the control software it is read once and displayed in the left column, firmware group box.

    what version of the control GUI are you using? did you modify the source and/or compiled it yourself?

    Have you tried installing the control software on another computer and connecting the EVM?

    Best Regards
    Jesus

  • 0 in reply to Jonas Kobbert
    TI__Prodigy 440 points
    Hi Jonas

    If you have a USB to Serial (TTL level) or TTL to RS232 adapter cable compatible with 3.3V I/O, you can connect to the EVMs debug UART port on J6 using your PC. The UART port is only used to output debug messages so you will only need to connect you adapter to the TX signal and GND.

    By providing us with the messages form this port will give us some insight on where your EVM is hanging.

    J6 is a six pin header, pin-2 is Tx and pin-6 GND (they should be marked on the boards silk screen).

    On you host PC you will have to create a serial communication session on the COM port assigned to your adapter with the following configurations:
    - Bit per second (Baud rate): 115200
    - Data bits: 8
    - Parity: None
    - Flow Control: None
    - Stop bit: 1

    for more information on the port and serial communication setup please refer to page 13 of EVM's User's Guide:
    www.ti.com/.../dlpu028c.pdf

    Please let us know how this is something you can do and how it turns out.

    Best Regards
    Jesus
  • 0 in reply to Jesus Torrado-Diaz
    Prodigy 70 points

    Hi jesus,

    first to answer your previous question:

    The version of the firmware on the EVM and the version of the control GUI are both 3.0.0. We did not modify or compiled the source by ourselves

    We will look into the new suggestions and i will get back to you as fast as possible.

    Best regards

    Jonas 

  • 0 in reply to Jonas Kobbert
    TI__Prodigy 440 points
    Hi Jonas

    It has been a while, were you able to connect the serial to USB adapter to the EVM or were you able to resolve your issue?

    Best Regards
    Jesus
  • 0 in reply to Jesus Torrado-Diaz
    Prodigy 70 points

    Dear Jesus,

    we had to wait for the RS232 Adapter.

    The photo is a picture of how we have wired the connectors. We tried the suggested configurations to create a serial communication session on the COM port assigned to the adapter (We used a 3.3 V USB to Serial (TTL) adapter) but we don’t get any Information from the board when it is switched on.

     

    It seems to be the same issue as discussed here:

     http://e2e.ti.com/support/dlp__mems_micro-electro-mechanical_systems/advanced_light_control/f/94/p/659252/2430031#pi320098=1

  • 0 in reply to Jonas Kobbert
    TI__Prodigy 440 points
    Hi Jonas

    It is unfortunate you have not received a response from the controller.

    It seems we have tried to do everything we can remotely, go ahead and contact your distributor to start the return process. Link them to this thread so that they have the date you reported your issue.

    Please let me know how it turns out

    Best Regards
    Jesus
  • 0 in reply to Jonas Kobbert
    TI__Mastermind 43165 points
    Hello Jonas,

    Jesus has changed roles. Did you get this resolved? Either a replacement or other means?

    Fizix