1 files changed, 108 insertions, 0 deletions
diff --git a/arduino/libraries/Wire/Wire.h b/arduino/libraries/Wire/Wire.h
new file mode 100755
index 0000000..f2af3a4
--- /dev/null
+++ b/arduino/libraries/Wire/Wire.h
@@ -0,0 +1,108 @@
+/*
+ * TWI/I2C library for mRF5x
+ * Copyright (c) 2015 Arduino LLC. All rights reserved.
+ * Copyright (c) 2016 Sandeep Mistry All right reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef TwoWire_h
+#define TwoWire_h
+
+#include "nrf.h"
+
+#include "Stream.h"
+#include "variant.h"
+
+#include "RingBuffer.h"
+
+// WIRE_HAS_END means Wire has end()
+#define WIRE_HAS_END 1
+
+class TwoWire : public Stream
+{
+  public:
+#if defined(NRF52) || defined(NRF52_SERIES)
+    TwoWire(NRF_TWIM_Type * p_twim, NRF_TWIS_Type * p_twis, IRQn_Type IRQn, uint8_t pinSDA, uint8_t pinSCL);
+#else
+    TwoWire(NRF_TWI_Type * p_twi, uint8_t pinSDA, uint8_t pinSCL);
+#endif
+    void begin();
+#if defined(NRF52) || defined(NRF52_SERIES)
+    void begin(uint8_t);
+#endif
+    void end();
+    void setClock(uint32_t);
+
+    void beginTransmission(uint8_t);
+    uint8_t endTransmission(bool stopBit);
+    uint8_t endTransmission(void);
+
+    uint8_t requestFrom(uint8_t address, size_t quantity, bool stopBit);
+    uint8_t requestFrom(uint8_t address, size_t quantity);
+
+    size_t write(uint8_t data);
+    size_t write(const uint8_t * data, size_t quantity);
+
+    virtual int available(void);
+    virtual int read(void);
+    virtual int peek(void);
+    virtual void flush(void);
+#if defined(NRF52) || defined(NRF52_SERIES)
+    void onReceive(void(*)(int));
+    void onRequest(void(*)(void));
+    void onService(void);
+#endif
+
+    using Print::write;
+
+  private:
+#if defined(NRF52) || defined(NRF52_SERIES)
+    NRF_TWIM_Type * _p_twim;
+    NRF_TWIS_Type * _p_twis;
+#else
+    NRF_TWI_Type * _p_twi;
+#endif
+
+    IRQn_Type _IRQn;
+
+    uint8_t _uc_pinSDA;
+    uint8_t _uc_pinSCL;
+
+    bool master;
+    bool receiving;
+    bool transmissionBegun;
+    bool suspended;
+
+    // RX Buffer
+    RingBuffer rxBuffer;
+
+    // TX buffer
+    RingBuffer txBuffer;
+    uint8_t txAddress;
+
+    // Callback user functions
+    void (*onRequestCallback)(void);
+    void (*onReceiveCallback)(int);
+
+    // TWI clock frequency
+    static const uint32_t TWI_CLOCK = 100000;
+};
+
+#if WIRE_INTERFACES_COUNT > 0
+extern TwoWire Wire;
+#endif
+
+#endif