Revision 2:2d4ee919e8a7, committed 2010-12-20

Comitter:

wim

Date:

Mon Dec 20 16:04:04 2010 +0000

Parent:

1:e2edbd61f4d0

Child:

3:72da9cd002bd

Commit message:

Changed in this revision

--- a/MCP23017.h	Mon Dec 20 15:53:38 2010 +0000
+++ b/MCP23017.h	Mon Dec 20 16:04:04 2010 +0000
@@ -50,24 +50,71 @@
 
 class MCP23017 {
 public:
+    /** Create an MCP23017 object connected to the specified I2C object and using the specified deviceAddress
+    *
+    * @param I2C &i2c the I2C port to connect to 
+    * @param char deviceAddress the address of the MSC23017
+    */
     MCP23017(I2C &i2c, char deviceAddress);
+
+    /** Set I/O direction of specified MCP23017 Port
+    *
+    * @param Port Port address (Port_A or Port_B)
+    * @param char direction pin direction (0 = output, 1 = input)
+    */
     void direction(Port port, char direction);
+
+    /** Set Pull-Up Resistors on specified MCP23017 Port
+    *
+    * @param Port Port address (Port_A or Port_B)
+    * @param char offOrOn per pin (0 = off, 1 = on)
+    */    
     void configurePullUps(Port port, char offOrOn);
+
     void interruptEnable(Port port, char interruptsEnabledMask);
     void interruptPolarity(Polarity polarity);
     void mirrorInterrupts(bool mirror);
     void defaultValue(Port port, char valuesToCompare);
     void interruptControl(Port port, char interruptControlBits);
+
+    /** Read from specified MCP23017 Port
+    *
+    * @param Port Port address (Port_A or Port_B)
+    * @returns data from Port 
+    */
     char read(Port port);
+    
+    /** Write to specified MCP23017 Port
+    *
+    * @param Port Port address (Port_A or Port_B)
+    * @param char byte data to write
+    */    
     void write(Port port, char byte);
 
 protected:
     I2C &_i2c;
-    void _init();
-    void _write(char address, char byte);
-    char _read(char address);
     char _readOpcode;
     char _writeOpcode;
+    
+    /** Init MCP23017
+    *
+    * @param
+    * @returns 
+    */    
+    void _init();
+    
+    /** Write to specified MCP23017 register
+    *
+    * @param char address the internal registeraddress of the MSC23017
+    */
+    void _write(char address, char byte);
+
+    /** Read from specified MCP23017 register
+    *
+    * @param char address the internal registeraddress of the MSC23017
+    * @returns data from register 
+    */
+    char _read(char address);
 };
 
 #endif
\ No newline at end of file