Documentation updates

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rayl

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Mar 29, 2010, 9:27:26 PM3/29/10
to vfs101driver
hi all

just pushed some protocol doc updates, thanks to damir for the good
investigative work!

ray

Damir Syabitov

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Mar 31, 2010, 2:30:21 AM3/31/10
to vfs101driver
So new portion of information:
Params:
0x0056 - sensitivity of the sensor to temperature (eg 0033 can be
triggered at a distance of 1 sm)
0x005f - affects the value of empty space below fingerprint (example
0011)
0x0069 - image contrast (values from 6 to 20, a further increase of
this value can require increasing 0x0056)

So i've got a good quality pictures by setting up :
0x0056 = 0x00CF
0x005F = 0x0001
0x0069 = 0x0024
0x0062 = 0x0000

or

0x0056 = 0x00FF
0x005F = 0x0001
0x0069 = 0x0020
0x0062 = 0x0000
and register 0x00ff500e = 0x00001500

Ray Lehtiniemi

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Apr 1, 2010, 11:11:41 AM4/1/10
to vfs101...@googlegroups.com

thank damir, will have a look this weekend and incorporate your latest
findings into the docs.

ray

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