Exercise 1: Mega2560 Interface

Instructions: as you complete each component, demonstrate to the instructor or the TA and have them sign off on it.

References:

• Atmel Howto
• Arduino mega board hardware reference
• mega2560 hardware reference

C Development Environment

• Configure:
  • For Windoze: Configure AVR studio for connecting to the mega2560
  • For Linux/OSX: Use the provided makefile
• Write a program to flash the LED attached to PORTB, pin 7 at a frequency of 3 Hz.
• Download your group's subversion tree

Adding Outputs

1. Hardware: Double-stick tape your Arduino board to the prototype board (use a small amount of tape). Connect +5V power and ground to the power and ground busses on the protoboard
2. Hardware: Connect at least four LEDs to different outputs (it is best if these are on the same port and contiguous pins)
3. Software: Write a test program that shows that all LEDS work independently of one-another
4. Software: Write a program that displays an interesting sequence of LED patterns

Adding Inputs

1. Hardware: Connect another pin on the same port to +5V through a resistor. Connect this same pin through a "switch" directly to ground. In this case, our switch is two pieces of wire: one connected to ground, the other to the pin. To "close" the switch, we simply touch the two wires together.
2. Software: augment your above program so that it does not start the LED sequence until after you close the switch

Start on Project 1

Before You Leave...

fagg@cs.ou.edu

Last modified: Mon Feb 25 23:51:31 2013