IRQ based tag polling

nfcbord.h

@@ -16,6 +16,8 @@ public:
 	SVector<Mfrc522, NFC_PORTS> readers;
 	SVector<uint8_t, NFC_PORTS> irqPins;
 	
+	static void detectCb(Mfrc522* reader, void* data);
+	
 	NfcBoard();
 	
 	void probe();
@@ -23,4 +25,8 @@ public:
 	void printNfcDevices(Serial* serial);
 	
 	int dispatch(char* inBuffer, Serial* serial);
+	
+	uint8_t csToIrq(uint8_t cs);
 };
+
+extern NfcBoard nfcBoard;