Diff: MMA8452.h

Revision:

1:ef026bf28798

Parent:

0:bcf2aa85d7f9

Child:

2:66db0f91b215

--- a/MMA8452.h	Fri Oct 04 14:48:02 2013 +0000
+++ b/MMA8452.h	Tue Oct 08 15:25:32 2013 +0000
@@ -89,7 +89,7 @@
 
 #define FF_MT_CFG 0X15                      // Type 'read/write' : Freefaul motion functional block configuration
 #define FF_MT_SRC 0X16                      // Type 'read' : Freefaul motion event source register
-#define FF_COUNT 0X17                       // Type 'read' : Freefaul motion threshold register
+#define FF_MT_THS 0X17                      // Type 'read' : Freefaul motion threshold register
 #define FF_COUNT 0X18                       // Type 'read' : Freefaul motion debouce counter
 
 #define ASLP_COUNT 0x29                     // Type 'read/write' : Counter setting for auto sleep
@@ -126,7 +126,8 @@
         * @param scl I2C8452 clock port
         * 
         */ 
-      Accelerometer_MMA8452(PinName sda, PinName scl);
+      Accelerometer_MMA8452(PinName sda, PinName scl, int frequency);
+      //Accelerometer_MMA8452(PinName sda, PinName scl);
        
        /** Destroys an MMA8452 object
         *
@@ -134,16 +135,23 @@
       ~Accelerometer_MMA8452();
       
       /** Activate the MMA8452 (required)
-       *
-       *
-       */
+        *   returns 0 for success in activating the chip
+        *   returns 1 for failure in activating the chip
+        *   -currrently no retries or waiting is done, this method tries 1 time the exits.
+      */
       int activate();
       
        /** Initialization of device MMA8452 (required)
-        *
         */
       void init();
     
+       /** Read the device ID from the accelerometer
+        *
+        * @param *deviceID Value of device - is should be 0x2A
+        * return 0 for success or
+        * return 1 for failure.
+        */        
+      int Get_DeviceID(int *deviceID);    
        /** Read the Tilt Angle using Three Axis
         *
         * @param *x Value of x tilt
@@ -169,6 +177,15 @@
         * @returns The value of z acceleration
         */
        int read_z();
+      
+      /** Read the x,y and z registers of the MMA8452
+       *
+       * takes a 2 byte char buffer to store the value
+       * for each axis.
+       * returns 0 for success, and 1 for failure
+       *
+       */ 
+      int read_xyz(char *x, char *y, char *z); 
             
         /** Read from specified MMA8452 register
          *
@@ -187,7 +204,7 @@
    
     private:
       I2C m_i2c;
-      int m_frequencey;
+      int m_frequency;
          
 };