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i2c from non beagle board host?

t emp
Prodigy 85 points

When I used a V1 Pico DLP I used "bus3-i2c" to send commands to the pico projector.

 

I now have my V2 projector driver by a graphics card in my linux PC but I am struggling to get the I2C commands working.  I have i2ctools installed  but am not sure how to translate the bus3-i2c syntax to i2cset.

 

Can someone furnish me with an example?

 

Cheers,

 

SA

  • 0
    Intellectual 515 points

    Hi there,

    Did you ever manage to get the i2ctools commands working? I've been trying to use i2cset over dvi in ubuntu, and can see the projector on bus0, but am not sure how to send 4 bytes using i2cput.

     

    cheers

     

    Gav

  • 0 in reply to Gavin Smith
    TI__Genius 9935 points

    SA and Gav,

    Please see some of the posts in this forum for examples of i2c commands using i2c-tools.

    Please refer to DLP Pico Kit v2 Programmer's Guide (http://www.ti.com/litv/pdf/dlpu002a).

    I am copying here a response I just gave another poster a short time ago:

    The commands look like this:

    bus3-i2c 0x1b wb4 0x04 0x00000000 # Select Pico Kit v2 HDMI input

    Where everything after the # is a comment.

    I posted quite a long example of code a week or two ago on this forum, which you can examine.

    Try something like:

    bus3-i2c 0x1b wb4 0x04 0x00000001 # Select Pico Kit v2 internal test patterns

    If it works, you should see a checkerboard pattern on the screen. You can return to the HDMI input by using the earlier command.

    Best regards,

    Pascal