only accept new rfid id

2023-12-02 17:04:46 +01:00
parent a07889e5ca
commit 5814a73f50
1 changed files with 8 additions and 1 deletions
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -376,9 +376,16 @@ void IRAM_ATTR rfid_interrupt()
 void readRFID()
 {
  rfid.PICC_ReadCardSerial();
+  
+  String newUid = getRFIDString(rfid.uid.uidByte);
+  if (newUid==lastUid) {
+    return;
+  }
+  lastUid = newUid;
+
  Serial.print("Card UID: ");
-  lastUid = getRFIDString(rfid.uid.uidByte);
  Serial.println(lastUid);
+
  //rfid.PICC_DumpDetailsToSerial(&(rfid.uid));