Basic library of routines to interface to a Microchip MCP23017 16-bit I/O expander using an I2C interface.

Dependents:   AdaFruit_RGBLCD SX1276_GPS

Fork of MCP23017 by jim herd

Revision:
3:f00ee94327c6
Parent:
1:d54d7002bae2
Child:
4:32fd6ee97dff
--- a/MCP23017.h	Sun Nov 28 21:10:15 2010 +0000
+++ b/MCP23017.h	Sun Nov 28 21:21:17 2010 +0000
@@ -100,31 +100,55 @@
  * pinmode
  * Set units to sequential, bank0 mode
  */  
-
+    /**
+     */
     void pinMode(int pin, int mode);
+    /**
+     */    
     void digitalWrite(int pin, int val);
+    /**
+     */    
     int  digitalRead(int pin);
 
 // These provide a more advanced mapping of the chip functionality
 // See the data sheet for more information on what they do
 
 //Returns a word with the current pin states (ie contents of the GPIO register)
+    /**
+     */
     unsigned short digitalWordRead();
 // Allows you to write a word to the GPIO register
+    /**
+     */
     void digitalWordWrite(unsigned short w);
 // Sets up the polarity mask that the MCP23017 supports
 // if set to 1, it will flip the actual pin value.
+    /**
+     */
     void inputPolarityMask(unsigned short mask);
 //Sets which pins are inputs or outputs (1 = input, 0 = output) NB Opposite to arduino's
 //definition for these
+    /**
+     */
     void inputOutputMask(unsigned short mask);
 // Allows enabling of the internal 100k pullup resisters (1 = enabled, 0 = disabled)
+    /**
+     */
     void internalPullupMask(unsigned short mask);
-
+    /**
+     */
     int read(void);
+    /**
+     */
     void write(int data);
+    /**
+     */    
     void writeRegister(int regAddress, unsigned char  val);
+    /**
+     */    
     void writeRegister(int regAddress, unsigned short val);
+    /**
+     */    
     int  readRegister(int regAddress);
 
 protected: