Diff: ENGO333_I2C.h

Revision:

0:3bffc1862262

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ENGO333_I2C.h	Thu Nov 24 23:02:42 2016 +0000
@@ -0,0 +1,84 @@
+/**
+ * File : ENGO333_I2C.h
+ * Created by : Chandra Tjhai
+ * Created on : September 10, 2016
+ *
+ * Description :
+ * This file contains a class to handle I2C bus operation for ENGO 333.
+ */
+
+#ifndef ENGO333_I2C_H
+#define ENGO333_I2C_H
+
+#include "mbed.h"
+
+/**
+ * Class
+ *  A class to handle I2C read/write operation
+ */
+class ENGO333_I2C
+{
+private:
+    I2C i2c;    // Object for handling I2C bus operations
+    
+public:
+    /**
+     * Constructor
+     *
+     * Input
+     *  sda = SDA or I2C serial data pin
+     *  scl = SCL or I2C serial clock pin
+     */
+    ENGO333_I2C(PinName sda, PinName scl);
+    
+    /**
+     * Destructor
+     */
+    ~ENGO333_I2C();
+    
+    /**
+     * Function :
+     *  Set I2C bus frequency
+     *
+     * Input :
+     *  freq = desired frequency in Hz
+     */
+    void setSpeed(int freq);
+    
+    /**
+     * Function :
+     *  Write one byte data into device's register
+     *
+     * Input :
+     *  deviceAddress = Device's I2C address
+     *  registerAddress = Device's register address to be written on
+     *  value = Value to be written on device's register address
+     */
+    void writeOneByte(char deviceAddress, char registerAddress, char value);
+    
+    /**
+     * Function :
+     *  Read one byte from device's register address
+     *
+     * Input :
+     *  deviceAddress = Device's I2C address
+     *  registerAddress = Device's register address to be read
+     *
+     * Return :
+     *  One byte data read from device's register
+     */
+    char readOneByte(char deviceAddress, char registerAddress);
+    
+    /**
+     * Function :
+     *  Read multiple bytes from device's register address
+     *
+     * Input :
+     *  deviceAddress = Device's I2C address
+     *  registerAddress = Device's register address to be read
+     *  value = Array of data to store values read from device's register
+     */
+    void readBytes(char deviceAddress, char registerAddress, char* value, int length);
+};
+
+#endif