Download and install TinyOS 1.1.7 from www.tinyos.net (there's a link on the top right, Downloads). You'll need to first download and install TinyOS 1.1, then upgrade to 1.1.7. The TinyOS distribution includes a series of tutorials, in the directory tinyos-1.x/doc/tutorial. You should go through the tutorials. However, you don't have any motes yet; you need to go through the tutorials using TOSSIM, the TinyOS simulator. When you reach the part of the first tutorial entitled "Compiling the Blink Application," jump to Lesson 5: Simulating TinyOS Applications in TOSSIM. You can run Blink in TOSSIM by typing make pc instead of make mica. Don't worry about TinyViz's autorun feature. Once you've finished with learning about TOSSIM, you can go through the rest of the tutorials using it. I'll distribute motes shortly.

The purpose of this assignment is to introduce you to programing TinyOS code; if you have any questions or confusion, feel free to mail me. I'll set up a running FAQ on issues that people run into.