Actually thanks everyone for the help but I have accopmplished what I wanted to do with my fingerprint module and finished my project 2 months ago. And someone has asked that how to generate and sore a char file, the procedure is right below:
1. You have to read a fnger image by using the byte stream : 0xEF, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0x01, 0x00, 0x03, 0x01, 0x00, 0x05
2. then after getting a success acknowledge you have to generate char file and store it in charbuff1 available in the module itself with a data packet mentioned in the R303A manual
3. then again read the finger image(always remember that a fingermust be on the reader otherwise the module will return a negative acknowlwdge) and again generate a charfile and store in the charbuff2
4. now using the charfiles stored in charbuff1&2 you can create a template file(reduced fingerprint image) (Refer manual) which will be stored back in the character buffers back again
then there is a command that is used to save the template file in the fingerprint library(flash memory available in the module) (very large)
There is also a command to search for finger template(acquired by the same procedure steps 1, 2, 3) which requires starting and end page addr of the search as parametes and returns a pageID(at which the matching template is present) in the acknowedge message.
Hopw this helps !!