64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
|
|
#include <SPI.h>
|
|
#include <MFRC522.h>
|
|
|
|
#define RST_PIN 5 // Configurable, see typical pin layout above
|
|
#define SS_PIN 23 // Configurable, see typical pin layout above
|
|
|
|
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance
|
|
|
|
//*****************************************************************************************//
|
|
void setup() {
|
|
Serial.begin(115200);
|
|
SPI.begin(22, 19, 18, 23); // Init SPI bus
|
|
mfrc522.PCD_Init(); // Init MFRC522 card
|
|
}
|
|
/**
|
|
* Helper routine to dump a byte array as hex values to Serial.
|
|
*/
|
|
void PrintHex(byte *buffer, byte bufferSize) {
|
|
for (byte i = 0; i < bufferSize; i++) {
|
|
Serial.print(buffer[i] < 0x10 ? " 0" : " ");
|
|
Serial.print(buffer[i], HEX);
|
|
}
|
|
}
|
|
|
|
//*****************************************************************************************//
|
|
|
|
void loop() {
|
|
|
|
// Look for new cards
|
|
if ( !mfrc522.PICC_IsNewCardPresent()) {
|
|
return;
|
|
}
|
|
if ( !mfrc522.PICC_ReadCardSerial()) {
|
|
return;
|
|
}
|
|
|
|
//mfrc522.PICC_DumpDetailsToSerial(&(mfrc522.uid)); //dump some details about the card
|
|
|
|
Serial.print("NewCard");
|
|
PrintHex(mfrc522.uid.uidByte, mfrc522.uid.size);
|
|
Serial.println("");
|
|
|
|
// Check if Card was removed
|
|
bool cardRemoved = false;
|
|
int counter = 0;
|
|
bool current, previous;
|
|
previous = !mfrc522.PICC_IsNewCardPresent();
|
|
|
|
while(!cardRemoved){
|
|
current =!mfrc522.PICC_IsNewCardPresent();
|
|
|
|
if (current && previous) counter++;
|
|
|
|
previous = current;
|
|
cardRemoved = (counter>2);
|
|
delay(50);
|
|
}
|
|
|
|
Serial.println("Card was removed");
|
|
delay(500); //change value if you want to read cards faster
|
|
mfrc522.PICC_HaltA();
|
|
mfrc522.PCD_StopCrypto1();
|
|
} |