Update I2CSlave.cpp

Added comments regarding the need for dedicated i2c_slave_byte_write() and  i2c_slave_byte_read() functions.

Author: Willem23

libraries/mbed/common/I2CSlave.cpp

@@ -46,13 +46,8 @@ int I2CSlave::read(void) {
 // The dedicated I2C Slave byte read and byte write functions need to be called
 // from 'common' mbed I2CSlave API for devices that have separate Master and 
 // Slave engines such as the lpc812 and lpc1549.
-//
-//#if defined (TARGET_LPC812) || defined (TARGET_LPC824) || defined (TARGET_LPC1549)
-#if defined (TARGET_LPC812)
-    return i2c_slave_byte_read(&_i2c, 0);
-#else        
+//    return i2c_slave_byte_read(&_i2c, 0);
     return i2c_byte_read(&_i2c, 0);
-#endif    
 }
 
 int I2CSlave::write(const char *data, int length) {
@@ -64,12 +59,8 @@ int I2CSlave::write(int data) {
 // from 'common' mbed I2CSlave API for devices that have separate Master and 
 // Slave engines such as the lpc812 and lpc1549.
 //
-//#if defined (TARGET_LPC812) || defined (TARGET_LPC824) || defined (TARGET_LPC1549)
-#if defined (TARGET_LPC812)
-    return i2c_slave_byte_write(&_i2c, data);    
-#else    
+//   return i2c_slave_byte_write(&_i2c, data);    
     return i2c_byte_write(&_i2c, data);
-#endif    
 }
 
 void I2CSlave::stop(void) {