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The code in this repository was Developed for the Pit Crew Team Senior Project at Cal Poly extending from Winter 2013 to Fall 2013. The entire project is open source: The full project report is hosted by Cal Poly's Kennedy Library (http://digitalcommons.calpoly.edu/mesp/197/), which details the machine's mechanical design. The code base here is released under the Apache 2.0 license, which enables nearly limitless reproduction, use of (for profit or not), modification, distribution, etc. of the code found in this project (see notice below). Code used in this project is often borrowed or based on the work of others, who are credited at the bottom of this article.

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This project was developed on an XMEGA-A1 XPLAINED development board. However, the code would be applicable to any XMEGA series chip, with a minimal amount of porting necessary.

Each folder in repository contains a test of a different subsystem. The folder the reader should be concerned with is the system__testing folder; this contains the final version of the code used in the project. This is broken up into the following sections

• /src
  • High level application code and user interface (via virtual com port)
• /lib
  • Drivers devoped for the various peripheral devices
  • /atmel
    • Drivers provided by Atmel
• /inc
  • Shared data and macro definitions

The most useful of these likely the lib folder, which contains the drivers developed for the following devices

• Sparkfun Devices
  • 16-channel multiplexer
  • 8-bit shift register
• Digikey Devices
  • AD7892 ADC
• Gecko Devices
  • G213V stepping motor driver

The stepping motor driver code, in particular, may be of use. It is a port of the classic AVR446 (Linear Speed Control of a Stepper Motor) for the XMEGA series chips.

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1. Code used in this project draws from the example projects for the XMEGAA1 XPLAIN board and the drivers for the XMEGA series, distributed by the Atmel Corporation. The author would like to thank Atmel for their work in developing and supporting the XMEGA chip series, as well as for the sample code, tutorials, and evaluation boards they provide for the XMEGA series.

2. Dr.John R. Ridgley, Cal Poly ME Professor, whose code developed for and instruction in the ME 405 (mechatronics) class at Cal Poly have enabled the author to advance this project in earnest.

Additionally, this project would not be possible without the contributions of the following.

1. Wawona Frozen Foods, based in Clovis, California, for sponsoring the project. In particular, credit should be given to Bill Smittcamp, Brian Okland, Jose Valdez, Vincent Olliver, and Duncan Dowdle for their investment in the project, both monetary and personal.

2. Dr. Peter Schuster, Senior Project Advisor to the Pit Crew Team, whose inspiring direction and deep technical knowledge have enabled the Pit Crew to succeed in developin a novel concept, from requirement generation to prototype demonstration.