我买了一个 rfid 长距离 Wiegand EM4095，
我找到了一个代码，但我需要替换 id 标签，
我需要找到放置密码卡或标签的方法
这是代码：
#include <SoftwareSerial.h>
#define ADD_TAG_CODE "000736087" //change this ID with your own card TAG
#define DEL_TAG_CODE "000555859" //change this ID with your own card
SoftwareSerial mySerial(2, 3); // RX, TX
String msg;
String ID ; //string to store allowed cards
void setup()
{
Serial.begin(9600);
Serial.println("Serial Ready");
mySerial.begin(9600);
Serial.println("RFID Ready");
}
char c;
void loop(){
while(mySerial.available()>0){
c=mySerial.read();
msg += c;
Serial.println(msg); //Uncomment to view your tag ID
Serial.println(msg.length());
}
msg=msg.substring(1,13);
if(msg.indexOf(ADD_TAG_CODE)>=0) add();
else if(msg.indexOf(DEL_TAG_CODE)>=0) del();
else if(msg.length()>10) verifica();
msg="";
}
void add(){
Serial.print("What TAG do you wanna grant access?: ");
msg="";
while(msg.length()<13){
while(mySerial.available()>0){
c=mySerial.read();
msg += c;
}
}
if(ID.indexOf(msg)>=0) {
Serial.println("\nAccess already granted for this card.");
msg="";
}
else{
Serial.print("Card: ");
Serial.println(msg);
ID += msg;
ID += ",";
//Serial.print("ID: ");
//Serial.println(ID);
msg="";
Serial.println("Access granted for this card.");
}
}
void del(){
msg="";
Serial.print("What TAG do you wanna deny access?: ");
while(msg.length()<13){
while(mySerial.available()>0){
c=mySerial.read();
msg += c;
}
}
msg=msg.substring(1,13);
if(ID.indexOf(msg)>=0){
Serial.println(msg);
Serial.println("TAG found. Access for this card denied.");
//ID.replace(card,"");
int pos=ID.indexOf(msg);
msg="";
msg += ID.substring(0,pos);
msg += ID.substring(pos+15,ID.length());
ID="";
ID += msg;
//Serial.print("ID: ");
//Serial.println(ID);
} else Serial.println("\nTAG not found or already denied");
msg="";
}
void verifica(){
msg=msg.substring(1,13);
if(ID.indexOf(msg)>=0) Serial.println("Access granted.");
else
Serial.println("Access denied.");
}
有人可以帮我解决这个问题或给我一个项目链接吗？
如何修改手动存储的卡片？
是否将 ID 存储在内存中？
谢谢你。