Here’s my code. For some reason I’m running out of code. Please take a gander. Thanks!
#include <SoftwareSerial.h>
#include <SD.h>
SoftwareSerial mySerial(2, 4);
int resetpin = 3; //Reader reset pin.
int ledpin = 7; //Status LED pin.
int CS_pin = 10;
void setup() {
Serial.begin(9600); //Initialize main serial connection.
mySerial.begin(9600); //Initialize reader serial connection.
pinMode(resetpin, OUTPUT); //Define reset pin as an output.
pinMode(ledpin, OUTPUT); //Define the LED pin as output.
pinMode(CS_pin, OUTPUT);
digitalWrite(resetpin, HIGH); //Pull the reset pin high.
Serial.println("Initializing SD Card");
if (!SD.begin(CS_pin)) {
Serial.println("Card Failed. Quitting");
return;
}
Serial.println("SD Card Ready");
Serial.println("Waiting for Tag");
}
void loop() {
char readByte, tempByte, addByte[13], tagString[13], mastertag[13] = {
'4', 'E', '0', '0', '0', '4', '3', 'D', '3', '8', '4', 'F' };
int index = 0, filesize;
boolean reading = false, cardreading = false, cardready = false;
File logread = SD.open("log.txt", FILE_WRITE);
while (mySerial.available() > 0) {
readByte = mySerial.read();
if(readByte == 2) reading = true;
if(readByte == 3) reading = false;
if(reading && readByte != 2 && readByte != 10 && readByte != 13){
tagString[index] = readByte;
index ++;
}
}
printtag(tagString);
if (strlen(tagString) != 0) {
if (database(tagString) == true) {
Serial.println("Match Found");
digitalWrite(ledpin, HIGH);
delay(1000);
digitalWrite(ledpin, LOW);
}
else {
Serial.println("No Match Found");
}
}
if (compare(mastertag, tagString)) {
Serial.println("Master Tag Found, Entering Admin Mode");
resetreader();
index = 0;
delay(3000);
while (cardready == false) {
while (mySerial.available() > 0) {
tempByte = mySerial.read();
if (tempByte == 2) cardreading = true;
if (tempByte == 3) cardreading = false;
if (cardreading && tempByte != 2 && tempByte != 10 && tempByte != 13) {
addByte[index] = tempByte;
index ++;
}
}
if (index == 12) {
Serial.println("Done Reading");
filesize = logread.size();
logread.seek(filesize);
logread.print(addByte[0]);
logread.print(addByte[1]);
logread.print(addByte[2]);
logread.print(addByte[3]);
logread.print(addByte[4]);
logread.print(addByte[5]);
logread.print(addByte[6]);
logread.print(addByte[7]);
logread.print(addByte[8]);
logread.print(addByte[9]);
logread.print(addByte[10]);
logread.print(addByte[11]);
logread.close();
cardready = true;
}
}
}
cleartag(tagString);
resetreader();
delay(200);
}
void resetreader() {
digitalWrite(resetpin, LOW);
digitalWrite(resetpin, HIGH);
delay(150);
}
boolean compare(char one[], char two[]) {
for (int i = 0; i < 12; i++) {
if (one[i] != two[i]) {
return false;
}
}
return true;
}
void cleartag(char one[]) {
for (int i = 0; i < strlen(one); i++) {
one[i] = 0;
}
}
void printtag(char one[]) {
int printer = 0;
if (!strlen(one) == 0) {
for (int i = 0; i < 12; i++) {
Serial.print(one[i]);
printer++;
}
if (printer == 12) {
Serial.println();
}
}
}
boolean database(char one[]) {
char sdarray[13];
boolean match = false;
File logread = SD.open("log.txt", FILE_WRITE);
if (logread) {
logread.seek(0);
while (logread.available() && match == false) {
for (int i = 0; i < 12; i++) {
sdarray[i] = logread.read();
}
if (compare(one, sdarray) && match == false) {
match = true;
logread.close();
return true;
}
}
if (match == false && !logread.available()) {
logread.close();
return false;
}
}
}