diff --git a/.gitignore b/.gitignore
index a42cc40..51f03c7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+build
 tests/bin
 .pioenvs
 .piolibdeps
diff --git a/AAL/Arduino.cpp b/AAL/Arduino.cpp
new file mode 100644
index 0000000..2513b5c
--- /dev/null
+++ b/AAL/Arduino.cpp
@@ -0,0 +1,9 @@
+#include <Arduino.h>
+#include <stdint.h>
+
+
+uint32_t HAL_GetTick(void);
+
+millis_t millis() {
+    return HAL_GetTick();
+}
\ No newline at end of file
diff --git a/AAL/Arduino.h b/AAL/Arduino.h
new file mode 100644
index 0000000..e12310c
--- /dev/null
+++ b/AAL/Arduino.h
@@ -0,0 +1,14 @@
+#ifndef _ARDUINO_H_
+#define _ARDUINO_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+
+
+typedef uint32_t millis_t;
+typedef bool boolean;
+
+
+millis_t millis();
+
+#endif // _ARDUINO_H_
\ No newline at end of file
diff --git a/AAL/Client.h b/AAL/Client.h
new file mode 100644
index 0000000..4af4ac7
--- /dev/null
+++ b/AAL/Client.h
@@ -0,0 +1,6 @@
+#ifndef _CLIENT_H_
+#define _CLIENT_H_
+
+
+
+#endif // _CLIENT_H_
\ No newline at end of file
diff --git a/AAL/IPAddress.cpp b/AAL/IPAddress.cpp
new file mode 100644
index 0000000..009c56f
--- /dev/null
+++ b/AAL/IPAddress.cpp
@@ -0,0 +1,10 @@
+#include <IPAddress.h>
+
+#include <stdint.h>
+
+IPAddress::IPAddress(uint8_t o1, uint8_t o2, uint8_t o3, uint8_t o4) {
+    _address[0] = o1;
+    _address[1] = o2;
+    _address[2] = o3;
+    _address[3] = o4;
+}
\ No newline at end of file
diff --git a/AAL/IPAddress.h b/AAL/IPAddress.h
new file mode 100644
index 0000000..8e2cca9
--- /dev/null
+++ b/AAL/IPAddress.h
@@ -0,0 +1,15 @@
+#ifndef _IPADDRESS_H_
+#define _IPADDRESS_H_
+
+#include <stdint.h>
+
+class IPAddress {
+    private:
+        uint8_t _address[4];
+        uint8_t *raw_address() { return _address; };
+    public:
+        IPAddress(uint8_t o1, uint8_t o2, uint8_t o3, uint8_t o4);
+};
+
+
+#endif // _IPADDRESS_H_
\ No newline at end of file
diff --git a/AAL/Stream.cpp b/AAL/Stream.cpp
new file mode 100644
index 0000000..063742d
--- /dev/null
+++ b/AAL/Stream.cpp
@@ -0,0 +1,12 @@
+#include <Stream.h>
+
+#include <stdint.h>
+#include <stdlib.h>
+
+Stream::Stream() {
+
+}
+
+size_t Stream::write(uint8_t c) {
+    return 0;
+}
\ No newline at end of file
diff --git a/AAL/Stream.h b/AAL/Stream.h
new file mode 100644
index 0000000..703f32e
--- /dev/null
+++ b/AAL/Stream.h
@@ -0,0 +1,13 @@
+#ifndef _STREAM_H_
+#define _STREAM_H_
+
+#include <stdint.h>
+#include <stdlib.h>
+
+class Stream {
+    public:
+        Stream();
+        size_t write(uint8_t c);
+};
+
+#endif // _STREAM_H_
\ No newline at end of file
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..ea9f144
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,30 @@
+CFLAGS?=-mcpu=cortex-m3 -mthumb -Og -fdata-sections -ffunction-sections -g -gdwarf-2 
+
+CC=arm-none-eabi-gcc
+CXX=arm-none-eabi-g++
+AR=arm-none-eabi-ar
+
+CFLAGS+=-I../ioLibrary_Driver/Ethernet -Isrc -IAAL
+
+OBJDIR=build
+VPATH=src AAL
+
+OBJS=$(addprefix $(OBJDIR)/,PubSubClient.o IPAddress.o Stream.o Arduino.o)
+
+all:	$(OBJS)
+	$(AR) rcs pubsub.a $^
+
+$(OBJDIR)/%.o:	%.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+$(OBJDIR)/%.o:	%.cpp
+	$(CXX) $(CFLAGS) -c $< -o $@
+
+$(OBJS): | $(OBJDIR)
+
+$(OBJDIR):
+	mkdir $(OBJDIR)
+
+.PHONY: clean
+clean:
+	-rm -rf $(OBJDIR)