Readucing Graph->Image upload time

Eddie3909

I am using the graph image CCS feature to display 720x640 YUV 4:2:2 images. It takes awhile to upload the image when I hit a breakpoint. According to the help info, the entire acquisition buffer is transferred to the display buffer each time a breakpoint is his.

This option specifies the height of the entire image in pixels. This value and the value in the Pixels Per Line field determine the image size. When the graph is updated, the entire image is fetched from the actual/simulated target board and displayed.

To speed up the image display, Is there a way to get CCS to only upload say 1/4 of the image instead of the entire image? I'd rather not buy a more expensive emulator to speed up display time since I only need to see a portion of the image.

I could write some code to cut out part of the picture and display that buffer, but I was hoping that there was a way to fool CCS using the display image parameters.

Cheers
Eddie

over 16 years ago

0 Bernie Thompson TI over 16 years ago

TI__Mastermind 41665 points

If you did not mind only seeing the top 1/4 you could cut down the height setting of the image and I suspect you could still see that portion of the image and you could probably offset the starting point through the image to get other sections, though I have not tried it myself. What version of CCS are you running? In the olde days you had to use individual planar buffers for displaying images but I understand in the newer CCS v4 there is support for interleaved images.

I would also consider the faster emulator, though it may be expensive, if you plan on doing a lot of development with CCS in the long run the loading times it saves you add up quite a bit.

0 Eddie3909 over 16 years ago in reply to Bernie Thompson TI

Guru 10385 points

I am using ccs 3.3 and XDS510 USB PLUS.

Cutting down the lines per display helps.

thx

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Readucing Graph->Image upload time