Add initial hw2 folder

diff --git a/hw2/assignment.pdf b/hw2/assignment.pdf
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index 0000000..2a8ccc8
Binary files /dev/null and b/hw2/assignment.pdf differ

diff --git a/hw2/main.cpp b/hw2/main.cpp
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+++ b/hw2/main.cpp
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+#include "mbed.h"\r
+\r
+DigitalOut led1(LED1);\r
+DigitalOut led2(LED2);\r
+\r
+int main(int argc, char **argv)\r
+{\r
+    while (1) {\r
+        led1 = 1; led2 = 0; wait(0.1);\r
+        led1 = 0; led2 = 1; wait(0.1);\r
+    }\r
+}\r

diff --git a/hw2/makefile b/hw2/makefile
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+++ b/hw2/makefile
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+PROG = mbed
+OBJS = main.o
+
+CPPFLAGS =
+LDFLAGS  = -lm
+
+default: info install
+
+dist:
+       zip mbed.zip makefile ../common.mk *.{c,cpp,h} */*.{cpp,.h}
+
+-include ../config.mk
+-include ../common.mk