diff --git a/include/avr_port.h b/include/avr_port.h
new file mode 100644
index 0000000..0ad0e3f
--- /dev/null
+++ b/include/avr_port.h
@@ -0,0 +1,14 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define AVR_PORTB 0x01
+#define AVR_PORTC 0x02
+#define AVR_PORTD 0x03
+
+#ifdef __cplusplus
+}
+#endif
\ No newline at end of file
diff --git a/version.txt b/version.txt
index afaf360..1cc5f65 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-1.0.0
\ No newline at end of file
+1.1.0
\ No newline at end of file