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DLPDLCR2000EVM: Linux/DLPDLCR2000EVM: BeagleBone with DLP 2000 not showing desktop with i2cset

Prodigy 20 points

Replies: 3

Views: 44

Part Number: DLPDLCR2000EVM


I followed many tutorials, and couldn't get my DLP to show my desktop using BBB

from the start my EVM shows the startup page for a couple of seconds and than replace it to the BBB login page

i followed these lines:

debian@beaglebone:~$ i2cset -y 2 0x1b 0x0b 0x00 0x00 0x00 0x00 i 
debian@beaglebone:~$ i2cset -y 2 0x1b 0x0c 0x00 0x00 0x00 0x1b i 

but the screen remains on the BBB session (login, etc...)

i updated the image to latest, and managed showing movies using mplayer but couldn't get the desktop display to work

I've tried using also:

sudo echo 48 > /sys/class/gpio/export

sudo echo out > /sys/class/gpio/gpio48/direction

sudo echo 1 > /sys/class/gpio/gpio48/value

it showed back my the DLP startup page but when i used the I2C i got back to the login page.

Any assistance would be much appreciated.

Thank you.

  • Hi Asher,

    Welcome to the TI E2E forums and thank you for interest in DLP. In addition to our DLPDLCR2000EVM Quick Start Tutorial, we also have a programmer's guide for the DLPC2607 which will help in issuing i2c commands to the controller on the EVM.

    Are you attempting to display your beaglebone black desktop or an external source?



  • In reply to ChristopherSmith:

    HI Chris,

    I'm trying to display my beaglebone desktop as a first step.

    Can i display my pc desktop using this configuration?


  • In reply to Asher Maman:

    Hi Asher,

    It is possible that the beaglebone black does not have the correct cape overlay installed. Here is a link to a previous thread which can help in installing the cape overlay: DLPDLCR2000EVM: BBB Cape Overlay Customization. In summary, 

    Step 1 - Update software

    $ sudo apt-get update
    $ sudo apt-get upgrade

    Step 2 - Clone Robert C. Nelson's repository and install 

    $ git clone github.com/.../bb.org-overlays
    $ cd ./bb.org-overlays
    $ ./install.sh

    Step 3 - Enable custom cape overlays in the uEnv.txt file

    $ sudo nano /boot/uEnv.txt
     ###Additional custom capes

    Here, search for and un-comment the first custom cape address and edit to:


    Save the file and reboot with:

    $ sudo nano reboot

    After reboot, try the i2cset commands and the beaglebone desktop should be displayed.