This page contains a link to the source code for the AVR microcontroller used in the FSKit. This project is described in the August 2011 issue of QST magazine. For a schematic and for details on how the FSKit works please refer to that article.
The source code consists of a single C source file and a makefile. The AVR GCC tools are used to compile the source code and create a hex file suitable for programming the AVR. You can download the C compiler and other tools for AVR software development from http://winavr.sourceforge.net
If you have comments or questions about the FSKit source code please email me. I will respond when I am able, but please understand that I have a full time job, and support is limited. I'm providing the source code so that those who are familiar with software development and want to extend or modify FSKit may do so. Please do not post this source code anywhere else.
I can provide programmed AVR microcontrollers and PC boards for the FSKit. Please email me for details.
Doug Hall, K4DSP
July 2011
FSKit Source Code (Zip format): fskit