code for interfacing pic16F877A with fingerprint module FIM3030

Can you give me a program for pic18f4550 for finger print module ,atm authentication system

fingerprint module with pic micro controller

In today’s secure world biometric safety is on the top. Unlike other techniques which make use of passwords and numbers, that are needed to be remembered, biometric techniques make use of human body parts like fingerprints or even iris of your eyes and as we know that these things are unique to all thus it makes biometric systems the most effective over others. In this project I have interfaced a very popular fingerprint scanner R305 with AtMega 16 microcontroller. This module communicates over UART protocol with microcontroller i.e. it makes use of Rx and Tx pin of microcontroller to interact with it.

Now talking about this module, it comes preloaded with scanner as well as detection section and we are left with 4 pins for connections. These 4 pins are: VCC, GND, Rx and Tx. It works over 3.3 to 5V supply and its Rx and Tx pin is connected to Tx and Rx pin of the microcontroller respectively. The mode is semi duplex asynchronism serial communication and the default baud rate is 57600bps but it can be changed between 9600~115200bps.

At power on, it takes about half a second for initialization, during this period the module can’t accept commands. The system sets aside a 512-bytes memory (16 pages X 32 bytes) for user’s notepad, where data requiring power-off protection can be stored. There is an image buffer and two 512-byte-character-file buffers within the RAM space of the module. This buffer serves for image storage and the image format is 256*288 pixels. Two character file buffers can be used to store both character file and template file. System sets aside a certain space within Flash for fingerprint template storage, that’s fingerprint library. It is non volatile in nature. This module also serves the purpose for providing any 32 bit random number.

When communicating, the transferring and receiving of command/data/result are all wrapped in data package format.