Add support for secondary Wire1 interface

Author: jhmaloney

libraries/Wire/Wire.h

@@ -108,4 +108,8 @@ class TwoWire : public Stream
 extern TwoWire Wire;
 #endif
 
+#if WIRE_INTERFACES_COUNT > 1
+extern TwoWire Wire1;
+#endif
+
 #endif

libraries/Wire/Wire_nRF51.cpp

@@ -309,4 +309,8 @@ void TwoWire::flush(void)
 TwoWire Wire(NRF_TWI1, PIN_WIRE_SDA, PIN_WIRE_SCL);
 #endif
 
+#if WIRE_INTERFACES_COUNT > 1
+TwoWire Wire1(NRF_TWI0, PIN_WIRE1_SDA, PIN_WIRE1_SCL);
+#endif
+
 #endif

libraries/Wire/Wire_nRF52.cpp

@@ -413,4 +413,17 @@ extern "C"
 }
 #endif
 
+#if WIRE_INTERFACES_COUNT > 1
+
+TwoWire Wire1(NRF_TWIM0, NRF_TWIS0, SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn, PIN_WIRE1_SDA, PIN_WIRE1_SCL);
+
+extern "C"
+{
+  void SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler(void)
+  {
+    Wire1.onService();
+  }
+}
+#endif
+
 #endif