Introduction to Embedded Systems
In this lab you will perform tasks designed to acquaint you with the ATMEL AVR Starter
Kit 500 (STK500), a prototyping/development board. Also, you will become familiar
with the C-compiler from CodeVision.
The board is programmed and controlled by CodeVision’s C-Compiler software that is
installed on the lab’s PCs. This software package along with the STK 500 starter kit
makes it possible to quickly develop and verify the design of micro-controller
applications.
Figure 1-1 – Typical Hardware Inter-connections
PC
STK500
COM1
COM2
RS-232 Cable
RS-232 Cable
ISP6PIN
SPROG3
CAUTION! Even this seemingly simple, introductory lab is time-consuming if working
with the STK500 (hardware board) and the CodeVision C-compiler for the first time.
Pre-lab Assignments
1. Read Chapter 1 of the textbook: Embedded C Programming and the Atmel AVR
by Barnett, Cox, & O’Cull (BCO).
2. Complete the Pre-lab Questions on page 1-4.
In-Lab Tasks
In-Lab Tasks are a suggestion for the minimum amount of work to complete in the lab.
You must maintain lab safety, such as unplugging the STK500 when appropriate.
However, feel free to do more and varied tasks than what are detailed. Document and
report in your lab write-up all of your lab efforts. For each of the following subprograms,
create a new project.
1. Print out and follow all the steps necessary to complete the tutorial “Getting
Started with the CodeVision AVR C Compiler.”
2. Repeat these steps on your own to make a different pattern on the LED’s
using the same interrupt scheme as used in the tutorial. Call this program
led2.c.
3. At this point you have used timer1 to generate an interrupt so that the
frequency of the blinking lights has been half of a second. Now, instead of
using a timer/interrupt to control the frequency of the lights, use a delay
function to control the frequency. Write code that generates a different
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