Adding source and Makefile

Makefile

@@ -0,0 +1,18 @@
+TARGETNAME = togglePin
+BUILDFOLDER = ./build/
+TARGET = $(BUILDFOLDER)$(TARGETNAME)
+
+INC = -Isrc/include -I/usr/lib/avr/include/
+CFLAGS = -Wall -Wpedantic -Wextra -g -Os -mmcu=atmega32u4
+
+SRC = $(wildcard src/*.c)
+
+all: $(TARGET)
+
+$(TARGET): $(SRC)
+	mkdir -p build
+	avr-gcc -o $@.elf $^ $(CFLAGS) $(INC)
+	avr-objcopy -j .text -j .data -O ihex $@.elf $@.hex
+
+clean:
+	rm -fr ./src/*.o ./build/

src/togglePin.c

@@ -0,0 +1,9 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <stdio.h>
+
+int main()
+{
+
+	return 0;
+}