Revision 8:89ed6aeb5dbb, committed 2013-09-22

Comitter:

clemente

Date:

Sun Sep 22 07:04:14 2013 +0000

Parent:

7:59e9ba115d0a

Child:

9:75a5960adf5c

Commit message:

Added functions to set offset for temperature, altitude and pressure, as De Cremer Tim suggest.

Changed in this revision

--- a/MPL3115A2.cpp	Sun Aug 25 21:48:05 2013 +0000
+++ b/MPL3115A2.cpp	Sun Sep 22 07:04:14 2013 +0000
@@ -47,6 +47,8 @@
     MPL3115A2_usr2_fptr = NULL;
     MPL3115A2_Int1.fall( NULL);
     MPL3115A2_Int2.fall( NULL);
+    
+    Reset();
 }
 
 void MPL3115A2::Reset( void)
@@ -452,6 +454,36 @@
         return 0;        
 }
 
+void MPL3115A2::SetPressureOffset( char offset)
+{
+    unsigned char data [2] = {0x2b, offset};
+
+    Standby();
+    writeRegs(data,2);
+
+    Active(); 
+}
+
+void MPL3115A2::SetTemperatureOffset( char offset)
+{
+    unsigned char data [2] = {0x2c, offset};
+
+    Standby();
+    writeRegs(data,2);
+
+    Active(); 
+}
+
+void MPL3115A2::SetAltitudeOffset( char offset)
+{
+    unsigned char data [2] = {0x2d, offset};
+
+    Standby();
+    writeRegs(data,2);
+
+    Active(); 
+}
+
 void MPL3115A2::readRegs(int addr, uint8_t * data, int len) {
     char t[1] = {addr};
     m_i2c.write(m_addr, t, 1, true);

--- a/MPL3115A2.h	Sun Aug 25 21:48:05 2013 +0000
+++ b/MPL3115A2.h	Sun Sep 22 07:04:14 2013 +0000
@@ -193,6 +193,42 @@
     */    
     void Reset( void);
 
+    /**
+    * Configure the Pressure offset.
+    * Pressure user accessible offset trim value expressed as an 8-bit 2's complement number. 
+    * The user offset registers may be adjusted to enhance accuracy and optimize the system performance. 
+    * Range is from -512 to +508 Pa, 4 Pa per LSB.
+    * In RAW output mode no scaling or offsets will be applied in the digital domain
+    *
+    * @param    offset
+    * @return   none
+    */    
+    void SetPressureOffset( char offset);
+    
+    /**
+    * Configure the Temperature offset.
+    * Temperature user accessible offset trim value expressed as an 8-bit 2's complement number. 
+    * The user offset registers may be adjusted to enhance accuracy and optimize the system performance. 
+    * Range is from -8 to +7.9375°C 0.0625°C per LSB.
+    * In RAW output mode no scaling or offsets will be applied in the digital domain
+    *
+    * @param    offset
+    * @return   none
+    */    
+    void SetTemperatureOffset( char offset);
+    
+    /**
+    * Configure the Altitude offset.
+    * Altitude Data User Offset Register (OFF_H) is expressed as a 2’s complement number in meters. 
+    * The user offset register provides user adjustment to the vertical height of the Altitude output. 
+    * The range of values are from -128 to +127 meters.
+    * In RAW output mode no scaling or offsets will be applied in the digital domain
+    *
+    * @param    offset
+    * @return   none
+    */    
+    void SetAltitudeOffset( char offset);        
+
 private:
     I2C m_i2c;
     int m_addr;