please send c code for r305 fingerprint module interfacing with 8051 ............. send the c code to allrfrinds[at]gmail.com mail id

Fingerprint Scanning Section: This involves scanning the finger and generating a template corresponding to the alignment of ridges and valleys present in a fingerprint image. This template becomes a character file and will be stored in your database.

Fingerprint search section: This includes identifying a fingerprint by searching for each template that is stored in your database. The fingerprint to be identified will compare all the templates and generate positive or negative recognition. In today's safe world bio-metric security is at the top. Unlike other techniques that make use of passwords and numbers, which are necessary to be remembered, bio-metric techniques make use of human body parts like fingerprints or even irises of your eyes and as we know these things are unique to all by Which makes bio-metric systems the most effective over others. In this project I connected a very popular R305 fingerprint scanner with AtMega 16 micro-controller. This module communicates through the UART protocol with the micro-controller, ie it makes use of Rx and Tx pin of the micro-controller to interact with it.
Now talking about this module, comes preloaded with the scanner as well as the detection section and we are left with 4 pins for the connections. These 4 pins are: VCC, GND, Rx and Tx. It works on 3.3 to 5V supply and its Rx and Tx pin connects to the Tx and Rx pin of the micro-controller respectively. The mode is semi-duplex for serial communication asynchronous and the default transmission speed is 57600bps, but can be changed between 9600 ~ 115200bps.
When powering up, it takes approximately half a second to initialise, during this period the module can not accept commands. The system sets aside a 512-byte memory (16 pages x 32 bytes) for the user's notebook, where data that requires shutdown protection can be stored. There is an image buffer and two 512-byte buffers in the RAM space of the module. This buffer is used for image storage and the image format is 256 * 288 pixels. You can use two character file buffers to store both the character file and the template file. The system leaves aside some space within Flash for storing fingerprint templates, it's a fingerprint library. It is not volatile by nature. This module also serves the purpose of providing any random number of 32 bits.