Diff: PCA9555.h

Revision:

2:fae93e0841f6

Parent:

1:a6699cd826bb

Child:

4:fe1637c9409f

Child:

5:73884f49ed97

--- a/PCA9555.h	Sat Aug 31 15:57:14 2013 +0000
+++ b/PCA9555.h	Mon Sep 09 17:30:51 2013 +0000
@@ -1,10 +1,14 @@
-#include "mbed.h"
- 
 #ifndef MBED_PCA9555_H
 #define MBED_PCA9555_H
+
+#include "mbed.h"
+//#include "PinDetect.h"
  
 /** Interface to the PCA9555 I2C 16 Bit IO expander */
 class PCA9555 {
+protected:
+        InterruptIn     _irqpin;
+        FunctionPointer _callbackChange;
 public:
     /** Create an instance of the PCA9555 connected to specfied I2C pins, with the specified address.
      *
@@ -12,7 +16,7 @@
      * @param scl The I2C clock pin
      * @param address The I2C address for this PCA9555
      */
-    PCA9555(PinName sda, PinName scl, int address);
+    PCA9555(PinName sda, PinName scl, PinName interrupPin, int address);
  
     /** Read the IO pin level
      *
@@ -29,13 +33,23 @@
     void setPin(unsigned int pinNumber);
     void clearPin(unsigned int pinNumber);
     void togglePin(unsigned int pinNumber);
+    bool getPin(unsigned int pinNumber);
     
     void setDirection(int data);
+    
+    void change(void (*function)(void));
+    
+    template<typename T>
+    void change(T *object, void (T::*member)(void)) { 
+        _callbackChange.attach(object, member); 
+    }
  
 private:
     I2C _i2c;
     int _address;
-    int currentWriteState;
+    unsigned int currentWriteState;
+    
+    void callChange(void);
 };
  
 #endif
\ No newline at end of file