求RFID库函数，MFRC522的Arduino库函数

ID:712171 · 发表于 2020-4-13 12:01

制作门禁系统，但是看不懂程序，没找到MFEC522的库函数，还请各位大佬能留下

ID:933981 · 发表于 2021-6-7 00:32

areduino ide里面有

ID:808634 · 发表于 2021-6-7 12:29

论坛里应该有

ID:155507 · 发表于 2021-6-7 13:56

MFRC522的Arduino函数

/*
*
* All the resources for this project:
* Modified by Aritro Mukherjee
*
*
*/
#include <SPI.h>
#include <MFRC522.h>
#define SS_PIN 10
#define RST_PIN 9
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.
void setup()
{
Serial.begin(9600); // Initiate a serial communication
SPI.begin(); // Initiate SPI bus
mfrc522.PCD_Init(); // Initiate MFRC522
Serial.println("Approximate your card to the reader...");
Serial.println();
}
void loop()
{
// Look for new cards
if ( ! mfrc522.PICC_IsNewCardPresent())
{
return;
}
// Select one of the cards
if ( ! mfrc522.PICC_ReadCardSerial())
{
return;
}
//Show UID on serial monitor
Serial.print("UID tag :");
String content= "";
byte letter;
for (byte i = 0; i < mfrc522.uid.size; i++)
{
Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
Serial.print(mfrc522.uid.uidByte[i], HEX);
content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
content.concat(String(mfrc522.uid.uidByte[i], HEX));
}
Serial.println();
Serial.print("Message : ");
content.toUpperCase();
if (content.substring(1) == "BD 31 15 2B") //change here the UID of the card/cards that you want to give access
{
Serial.println("Authorized access");
Serial.println();
delay(3000);
}
else {
Serial.println(" Access denied");
delay(3000);
}
}

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