Diff: Header/I2C_base.h

Revision:

0:772bf4786416

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Header/I2C_base.h	Sat Mar 21 12:33:05 2015 +0000
@@ -0,0 +1,77 @@
+#ifndef I2C_BASE_H
+#define I2C_BASE_H
+
+#define _MBED_
+
+//Base class to extend I2C support to multiple platforms
+typedef char byte;
+
+
+class I2C_base
+{
+ public:
+    virtual void frequency (int frequency)                             = 0; //set the communication frequency
+    virtual bool read      (int address, byte* data, int length)       = 0; //read data from the bus
+    virtual bool write     (int address, const byte* data, int length) = 0; //write data to the bus  
+    virtual bool writeByte (int address, byte data)                    = 0; //write byte to the bus
+    
+ private:
+    int _frequency;
+};
+
+extern I2C_base* i2c;
+
+
+ //MBED programming environmnet
+#ifdef _MBED_
+#include "mbed.h"
+//define SDA and SCL if not already defined
+#ifndef SDA
+    #define SDA p28
+#endif
+
+#ifndef SCL
+    #define SCL p27
+#endif
+//*******************************************
+
+
+/* should be placed somewhere else, just debug code*/
+
+
+
+int millis();
+
+/***************************************************/
+ 
+class I2C_MBED: public I2C_base
+{
+ public:
+    I2C_MBED (PinName pSDA, PinName pSCL): _i2c(pSDA,pSCL){}
+    virtual void frequency (int hz)
+    {
+        _i2c.frequency(hz);
+    } 
+    virtual bool read(int address, byte* data, int length)
+    {
+        return !_i2c.read(address<<1,data,length);
+    }
+    virtual bool write(int address, const byte* data, int length)
+    {
+        return !_i2c.write(address<<1,data,length);
+    }
+    virtual bool writeByte(int address, byte data)
+    {
+        return write(address, &data, 1);
+    }
+
+ private:
+    I2C _i2c;
+};
+
+
+
+#endif //_MBED_
+
+
+#endif //I2C_BASE_H
\ No newline at end of file