line scan image sensor demo

ratronic · 2010-04-15 15:49

Hi everyone - I am mainly posting this for Phil (if you see this) to verify I am clocking the si and clk lines right. It seems to work just fine this way, I am displaying the line scanner output to the vga display about 5 displays a second. The line scan image sensor is hooked up to a ltc1298 adc ic.

Phil Pilgrim (PhiPi) · 2010-04-15 18:13

Dave,

'Very nice display! I took a look at your code. You're missing the first pixel, so the last one you read will be from whatever charge is left on AO after it goes tri-state. To catch the first pixel, you can do your sampling like this:

  [b]outa[/b][noparse][[/noparse]&#173;si&#093;~~                        'trigger si then clk
  [b]outa[/b][noparse][[/noparse]&#173;clk&#093;~~                       
  [b]outa[/b][noparse][[/noparse]&#173;si&#093;~
  [b]outa[/b][noparse][[/noparse]&#173;clk&#093;~
  [b]repeat[/b] i [b]from[/b] 0 to 127            'grab 128 pixels into a[noparse][[/noparse]&#173;&#093;
    a[noparse][[/noparse]&#173;i&#093; := ad.getadc(1)&$ff        'channel 1 of ltc1298 connected to ao on line scanner
    [b]outa[/b][noparse][[/noparse]&#173;clk&#093;~~
    [b]outa[/b][noparse][[/noparse]&#173;clk&#093;~

-Phil

ratronic · 2010-04-15 18:46

Thanks for taking the time to look Phil. I've played with· and improved my code since I posted that. It's a 'work in progress' but I am glad to hear that I am clocking it ok. Thanks for the example.

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···································Fix it, if ain't broke!

D Rat

Dave Ratcliff N6YEE

line scan image sensor demo

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