[fprint] Detect finger in sensor

[Ing. Alfredo Alarcon]

Hi Timo tank you for the tip, do you have a code example of the usage of 
this API?? Cheers.


El 09/12/12 13:31, Timo Teras escribió:
> On Sun, 09 Dec 2012 11:16:35 -0600 "Ing. Alfredo Alarcon"
> <frekoalarcon at gmail.com> wrote:
>
>> 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??
> I use the asynchronous API (which is not too well documented), but
> works perfectly. The functions like fp_async_identify_*. You can start
> the identification, and stop it when ever you want. You'll need
> probably some additional glue code to integrate with the main loop -
> but it's the API that works out the best for me.
>
> - Timo


-- 
Ing. Alfredo Alarcón
Xalfij Electrónica
Depto. Ingeniería