Difference between revisions of "Reading RFID tags"
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== Code == |
== Code == |
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#include <18f4520.h> |
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#fuses HS,NOLVP,NOWDT,NOPROTECT |
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#use delay(clock=40000000) // 40 MHz crystal on PCB |
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#use rs232(baud=2400, UART1) // hardware UART; uses RC6/TX and RC7/RX |
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int16 i; |
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Inputs: |
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char value[12]; |
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ENABLE: 0 V when enabled, and 5 V when not enabled |
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void main() { |
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SOUT: Serial Output |
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for (i=0; i<12; i++) { //read in the 12 values |
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GND: 0 V |
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value[i]=getc(); |
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printf("rfid# %c %c %c %c %c %c %c %c %c %c \r\n", value[1] value[2] value[3] value[4] value[5] value[6] value[7] value[8] value[9] value[10]); // \r is carriage return, \n is scroll up //display 10 unique id digits |
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} |
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== Further Reading == |
== Further Reading == |
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Revision as of 17:14, 4 February 2009
Original Assignment
Interface your PIC with an RFID reader (see here) and demonstrate recognition of various RFID tags.
Overview
Circuit
Code
#include <18f4520.h> #fuses HS,NOLVP,NOWDT,NOPROTECT #use delay(clock=40000000) // 40 MHz crystal on PCB #use rs232(baud=2400, UART1) // hardware UART; uses RC6/TX and RC7/RX
int16 i;
char value[12];
void main() {
for (i=0; i<12; i++) { //read in the 12 values
value[i]=getc();
}
printf("rfid# %c %c %c %c %c %c %c %c %c %c \r\n", value[1] value[2] value[3] value[4] value[5] value[6] value[7] value[8] value[9] value[10]); // \r is carriage return, \n is scroll up //display 10 unique id digits
}
