Introducing enum for handling the NFC state to improve code readability

src/nfc.h

@@ -3,6 +3,16 @@
 
 #include <Arduino.h>
 
+typedef enum{
+    IDLE,
+    READING,
+    READ_SUCCESS,
+    READ_ERROR,
+    WRITING,
+    WRITE_SUCCESS,
+    WRITE_ERROR
+} nfcReaderStateType;
+
 void startNfc();
 void scanRfidTask(void * parameter);
 void startWriteJsonToTag(const char* payload);
@@ -10,7 +20,9 @@ void startWriteJsonToTag(const char* payload);
 extern TaskHandle_t RfidReaderTask;
 extern String nfcJsonData;
 extern String spoolId;
-extern volatile uint8_t hasReadRfidTag;
+extern volatile nfcReaderStateType nfcReaderState;
 extern volatile bool pauseBambuMqttTask;
 
+
+
 #endif