Update for alternate Pins for I2C and TwoWire object conflict

src/I2C_Slave.cpp

@@ -23,23 +23,35 @@
 volatile uint32_t _numErrors = 0;
 void (*I2C_Slave::_user_onCommand)(uint8_t, uint8_t){};
 
+// create a new wire object
+TwoWire new_Wire = TwoWire();
+
+
 // Constructors ////////////////////////////////////////////////////////////////
 
 I2C_Slave::I2C_Slave() {}
 
 // Public Methods //////////////////////////////////////////////////////////////
 
 void I2C_Slave::begin() {
-    Wire.begin(_addr);
-    Wire.onRequest(_onRequest);
-    Wire.onReceive(_onReceive);
+    new_Wire.begin(_addr);
+    new_Wire.onRequest(_onRequest);
+    new_Wire.onReceive(_onReceive);
 }
 
 void I2C_Slave::begin(uint8_t addr) {
     _addr = addr;
     this->begin();
 }
 
+// assign the pin if alternate I2C is used esle assign default pin
+void I2C_Slave::begin(uint8_t addr, uint32_t sda = SDA, uint32_t scl = SCL) {
+    new_Wire.setSDA(sda);
+    new_Wire.setSCL(scl);
+    _addr = addr;
+    this->begin();
+}
+
 // return the number of I2C comm errors encountered
 uint32_t I2C_Slave::numErrors() { return _numErrors; }
 
@@ -66,27 +78,27 @@ size_t I2C_Slave::writeRegisters(char* buf) {
 
 void I2C_Slave::_onRequest() {
     uint8_t idx = 0;
-    if (Wire.available()) {
-        idx = Wire.read();
+    if (new_Wire.available()) {
+        idx = new_Wire.read();
         if (idx > BUFFER_LENGTH - 1) idx = 0;
     }
-    Wire.write(_registers[idx]);
+    new_Wire.write(_registers[idx]);
 }
 
 void I2C_Slave::_onReceive(int size) {
     if (size < 2) return;  // let the request handler process this
 
     if (size > 2) {
         // assume an error on more than 2 bytes - flush read buffer
-        while (Wire.available()) Wire.read();
+        while (new_Wire.available()) new_Wire.read();
         _numErrors++;
         return;
     }
 
     // otherwise, two bytes indicate a command, pass to user function
     uint8_t b0, b1;
-    b0 = Wire.read();
-    b1 = Wire.read();
+    b0 = new_Wire.read();
+    b1 = new_Wire.read();
     _user_onCommand(b0, b1);
 }
 

src/I2C_Slave.h

@@ -45,6 +45,7 @@ class I2C_Slave {
     I2C_Slave();
     void begin();
     void begin(uint8_t);
+    void begin(uint8_t addr, uint32_t sda, uint32_t scl);
     uint32_t numErrors();
     size_t numRegisters();
     void onCommand(void (*)(uint8_t, uint8_t));