Atmega328PB support

README.md

@@ -1,9 +1,2 @@
 # Omron-Arduino
-Arduino code to get data out of the incredible 4x4 IR OMRON MEMS sensor.
-Omron D6T is a MEMS IR sensor that has the distinct advantage of sensing human presence even if the individual is stationary. The sensor array also allow sensing of movement direction of the person.
-
-Example Image from the Omron D6T 4x4 array:
-
-![alt tag](ExampleImage.png?raw=true "Image Title")
-
-In this image the brighter pixels correspond to a warmer body. Note that the OMRON D6T-44L returns data in a 4x4 format. To view the result in a large image like this, I used Matlab to resize to a much larger image and mapped the image intensities with some sensible intensity transforms (power transform).
+Arduino code to read Omron D6T IR sensor.

libraries/WireExt/WireExt.cpp

@@ -31,6 +31,13 @@ extern "C" {
 
 #include "WireExt.h"
 
+#if defined (__AVR_ATmega328PB__)
+  #define TWBR TWBR0
+  #define TWCR TWCR0
+  #define TW_STATUS TWSR0
+  #define TWDR TWDR0
+#endif
+
 // Initialize Class Variables //////////////////////////////////////////////////
 
 // Constructors ////////////////////////////////////////////////////////////////