March 24, 2013 at 6:30 am #4932abhilashParticipant
hello guys.. i am making a project on rfid based banking system… i have used an RFID module in this but i did not understand the connection of this RFID module. I bought this module but i did not get its datasheet… i searched in the internet also but couldnt find it..so can any body explain me about the connections… so that i can do this likewise as the engineersgarage.com site has taught in ‘RFID interfacing with 8051 microcontroller’…
i am posting my RFID module(EM-18) which contains two switches… i dont know which switch should i need.. plzz tell me the connections so that i can interface it with AT89c52 microcontroller…March 25, 2013 at 12:08 pm #9367abhilashParticipant
MAX 232 IC is already connected in my module.. Do i need to connect another max232 IC to interface with my at89c52 microcontroller..? Serial port is also connected. plz tell me how to interface with Microcontroller.
my program is like this. Is there any correction needed..?
// Program to interface controller with controller
#define port P3 // command port for lcd
#define dataport P0 //dataport for lcd
#define key P1 // port for keypad
#define sec 100
sbit rs = port^7;
sbit rw = port^6;
sbit e = port^5;
sbit buzzer_pin=P2^1; // Buzzer pin to sound the buzzer.
unsigned char card_id;
void delay(unsigned int msec) // time delay function
void lcdcmd(unsigned char item) // function to send lcd command
void lcddata(unsigned char item) //function to send data to the lcd
void lcddatastring(unsigned char *str) // function to display on lcd string thru pointer by reading 1 by 1
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