Loading Bitmaps to the LightCrafter

Ganesh YV

We have written a custom QT/C++ script to inteface with the Lightcrafter through TCP/IP. We would like to load some bitmaps to the device through our scripts. In the command reference documentation, we couldn't find any information on whether the bitmaps are stored along with the header info or just the image pixel information.We know there is a GUI program from TI, but would like to control the device through our scripts to load specific patterns of our choice at runtime required for an application.

Ganesh

over 13 years ago

0 Sureshkumar Manimuthu over 13 years ago

TI__Prodigy 410 points

Hi Ganesh,

The LightCrafter commands (Static Image 0105 & Pattern Definition 0401) accept the full BMP file (with header information).

Please note that the Static Image command only accepts 24 bit BMP image while the Pattern Definition command accepts 1, 4, and 8 bit indexed BMP images.

Regards,

Suresh

0 Ganesh YV over 13 years ago in reply to Sureshkumar Manimuthu

Prodigy 95 points

Suresh

Thank you for the information.

One more question on the bitmap load. When trying to load an 8 bit gray-scale image of 604x684 resolution, what is the ideal packet size we should be using. Is it 65535 Bytes (assuming the payload bits L1 and L2 are 0xFF each) or is it limited by the TCP practical packet size limit which I believe is 1500 Bytes in Windows 7. In essence, how many chunks should we be breaking a single bitmap while transferring it to the lightcrafter. Thanks.

Ganesh

0 Sureshkumar Manimuthu over 13 years ago in reply to Ganesh YV

TI__Prodigy 410 points

Ganesh,

You can use command packet size of upto 65535, however your netwrok driver may split them to multiple TCP packets and send and the LightCrafter will internally assemble them together to form a single command packet.

You should be able to send the 608x684 image by 7 command packets by minimum.

Regards,

Suresh

0 Ganesh YV over 13 years ago in reply to Sureshkumar Manimuthu

Prodigy 95 points

Suresh

Thanks again.

Ganesh

DLP®︎ products

DLP products forum

Loading Bitmaps to the LightCrafter