Cytron Technical Forum

hello,im doing a project on Rfid Based Time & Attendance System using pic16f877a .
i am interfacing lcd, keypad, rtc with pic board.
i am using mplab ide and hi-tech c compiler for writing down the program.
i still have doubt about the database. since i am using only 4-5 rfid cards, is there any chance that i can proceed without the database part? i dont want to use the database because i think it makes my project more complicated.

PIC16F877A have 256 bytes EEPROM. 1 RFID tag have 10 unique number. You can store RFID number into EEPROM. Using 5 RFID Tag only required 50 bytes of the EEPROM.

Thank you for your reply.

so you meant if we make use of eeprom then there is no usage of database right.
and how do we store data in eeprom?

no need EEPROM, just declare your array as const, it will be in program memory.

oh oki i got it.... i started interfacing the keypad and LCD, started writing the program too...
now my question is should i write a interfacing program for each module(keypad,LCD,RTC) and dump it in the chip one by one using pickit2 programmer and debugger and call the function in main program???? or how is it actually done???

radhi WROTE:hello,im doing a project on Rfid Based Time & Attendance System using pic16f877a .
i am interfacing lcd, keypad, rtc with pic board.
i am using mplab ide and hi-tech c compiler for writing down the program.
i still have doubt about the database. since i am using only 4-5 rfid cards, is there any chance that i can proceed without the database part? i dont want to use the database because i think it makes my project more complicated.

In my opinion, it depends on your project application. Even with 5 RFID cards, if you want to record the real time attendance for a month or year, you need a database.

If you just want to compare the 5 RFID cards whether it is registered or not, then you can use EEPROM.

oki .. then how do i store de data in EEPROM ??? should i have to program it saperatly???
i started interfacing the keypad and LCD, started writing the program too...
now my question is should i write a interfacing program for each module(keypad,LCD,RTC) and dump it in the chip one by one using pickit2 programmer and debugger and call the function in main program???? or how is it actually done???