From d0138d78d8c9f1f89ebcd50e8ebd0a92a4ed9794 Mon Sep 17 00:00:00 2001
From: kkloesener <konrad.kloesener@gmx.de>
Date: Tue, 3 Nov 2020 22:11:30 +0100
Subject: [PATCH] testst

---
 MFRC522_I2C.cpp | 5 ++---
 MFRC522_I2C.h   | 4 ++--
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/MFRC522_I2C.cpp b/MFRC522_I2C.cpp
index 8bf2cf9..cda1f85 100644
--- a/MFRC522_I2C.cpp
+++ b/MFRC522_I2C.cpp
@@ -20,11 +20,10 @@
  */
 MFRC522::MFRC522(	byte chipAddress,
 					byte resetPowerDownPin,	///< Arduino pin connected to MFRC522's reset and power down input (Pin 6, NRSTPD, active low)
-					TwoWire TwoWireInstance
-				) {
+					TwoWire * TwoWireInstance
+				) : _TwoWireInstance(TwoWireInstance) {
 	_chipAddress = chipAddress;
 	_resetPowerDownPin = resetPowerDownPin;
-	_TwoWireInstance = TwoWireInstance;
 } // End constructor
 
 
diff --git a/MFRC522_I2C.h b/MFRC522_I2C.h
index 1b720a6..b9c15f6 100644
--- a/MFRC522_I2C.h
+++ b/MFRC522_I2C.h
@@ -321,7 +321,7 @@ public:
 	/////////////////////////////////////////////////////////////////////////////////////
 	// Functions for setting up the Arduino
 	/////////////////////////////////////////////////////////////////////////////////////
-	MFRC522(byte chipAddress, byte resetPowerDownPin, TwoWire TwoWireInstance);
+	MFRC522(byte chipAddress, byte resetPowerDownPin, TwoWire & TwoWireInstance = Wire);
 
 	/////////////////////////////////////////////////////////////////////////////////////
 	// Basic interface functions for communicating with the MFRC522
@@ -404,7 +404,7 @@ public:
 private:
 	byte _chipAddress;
 	byte _resetPowerDownPin;	// Arduino pin connected to MFRC522's reset and power down input (Pin 6, NRSTPD, active low)
-	TwoWire _TwoWireInstance;	// TwoWire Instance
+	TwoWire & _TwoWireInstance;	// TwoWire Instance
 	byte MIFARE_TwoStepHelper(byte command, byte blockAddr, long data);
 };