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DLPLCR4500EVM: Issue with the external trigger in using the API

Jared Goldnab
Prodigy 20 points

Part Number: DLPLCR4500EVM
Other Parts Discussed in Thread: DLPC350

Hey,
I need to use the external trigger to sync a 20 image pattern, of 1bpp.  I have been able to do this perfectly fine on the GUI, but I need to drive the lightcrafter from a arm processor so i've been trying to get it working with the API.  However, i keep running into an issue where the input trigger is causing the entire pattern to display instead of advancing the pattern by one image.  I cant seem to find and examples code for this online and was hoping this is the place to go.

General idea is 
load 20 image pattern
display first image
when receive input go to next image
repeat ad finem

anything would be helpful

  • 0
    TI__Mastermind 30600 points
    Hi Jared,

    I assume that you've looked at the DLPC350 programmer's guide? You're going to make sure that you're in the right trigger mode and that you're using the correct trigger to advance the patterns. www.ti.com/.../dlpu010f.pdf

    You mentioned an API - are you using the ALC SDK? I'd like to point out that the SDK is a good starting point but was really developed for machine vision applications so it may not have the example code you're looking for.

    My recommended path would be to take a look at the GUI source code and use that to understand which commands/data are being sent to the Lightcrafter. This will be especially useful for you because you're able to get your patterns working in the GUI. www.ti.com/dlplcr4500gui-v4

    Hope that helps,
    Paul