[fprint] Detect finger in sensor

[Ing. Alfredo Alarcon]

Hi tank you for your answer, my application use a BeagleBone, 16x2 LCD 
character and a 4x4 Keypad, must wait a finger in sensor to do de 
identification, the fingerprint are in a MySQL database in the 
BeagleBone, in a PC with Ubuntu and the SDK from Digital Persona to 
kernel 2.6, do a simple call to identifcation function in a loop, this 
function wait 100 milliseconds and exit the function with a time out 
error and continue the program, but in the BeagleBone ARM i use the 
libfprint to build it in kernel 3.2, but the function identify stop the 
flow of the program, and the LCD and the keypad are not accessible until 
a finger is in the sensor, is there any way to stop the identify function??

El 07/12/12 01:47, Bastien Nocera escribió:
> Em Thu, 2012-12-06 às 22:47 -0600, Ing. Alfredo Alarcon escreveu:
>> Hi everybody, i have a 400b digital persona sensor, when i used the sdk
>> from digital persona (before they charged it) the identify function wait
>> for a finger n milliseconds and then break the function and continue
>> with the program, but here in the libfprint the identify function blocks
>> the program waiting for a finger in the sensor, what can i do with this
>> problem??
> There's probably a bug in your program, or you're not canceling the scan
> correctly. In either case, I would advise you to use the D-Bus interface
> in fprintd which takes care of all that.
>
> Cheers
>


-- 
Ing. Alfredo Alarcón
Xalfij Electrónica
Depto. Ingeniería