no library files for AVR and ARM?
I could find only arduino library file.
How could I get sources for using fingerprint sensor with ATmega128 and Cortex-m3.
Hi whgkfkd95,
Unfortunately, we do not have any example code for using the Fingerprint Scanner with either of those, only for an [Arduino. To get it to work with either an ATMega128 or Cortex-M3, a good place to start would be the [Programming Guide from ADH-Tech.](https://cdn.sparkfun.com/assets/learn_tutorials/7/2/3/GT-521F52_Programming_guide_V10_20161001.pdf)](https://learn.sparkfun.com/tutorials/fingerprint-scanner-gt-521fxx-hookup-guide#example-code-for-arduino)