add MSA311 support

Adafruit_MSA301.cpp

@@ -22,14 +22,7 @@
  *
  */
 
-#if ARDUINO >= 100
-#include "Arduino.h"
-#else
-#include "WProgram.h"
-#endif
-
 #include <Adafruit_MSA301.h>
-#include <Wire.h>
 
 /**************************************************************************/
 /*!
@@ -38,6 +31,25 @@
 /**************************************************************************/
 Adafruit_MSA301::Adafruit_MSA301() {}
 
+/**************************************************************************/
+/*!
+    @brief  Instantiates a new MSA311 class
+*/
+/**************************************************************************/
+Adafruit_MSA311::Adafruit_MSA311() {}
+
+/*!
+ *    @brief  Sets up the hardware and initializes I2C
+ *    @param  i2c_address
+ *            The I2C address to be used.
+ *    @param  wire
+ *            The Wire object to be used for I2C connections.
+ *    @return True if initialization was successful, otherwise false.
+ */
+bool Adafruit_MSA311::begin(uint8_t i2c_address, TwoWire *wire) {
+  return Adafruit_MSA301::begin(i2c_address, wire);
+}
+
 /*!
  *    @brief  Sets up the hardware and initializes I2C
  *    @param  i2c_address

Adafruit_MSA301.h

@@ -14,6 +14,7 @@
 I2C ADDRESS/BITS
 -----------------------------------------------------------------------*/
 #define MSA301_I2CADDR_DEFAULT (0x26) ///< Fixed I2C address
+#define MSA311_I2CADDR_DEFAULT (0x62) ///< Fixed I2C address
 /*=========================================================================*/
 
 #define MSA301_REG_PARTID 0x01    ///< Register that contains the part ID
@@ -173,4 +174,12 @@ private:
   int32_t _sensorID;
 };
 
+
+/** Class for hardware interfacing with an MSA311 accelerometer */
+class Adafruit_MSA311 : public Adafruit_MSA301 {
+public:
+  Adafruit_MSA311(void);
+  bool begin(uint8_t i2c_addr = MSA311_I2CADDR_DEFAULT, TwoWire *wire = &Wire);
+};
+
 #endif