Provided sw_app directory includes base C project + makefile which includes a serial I/O driver, printf/sprintf/vprintf library & timer driver.
Typing 'go' in sw_app will build the source code and update prog_mem_content.vhd with new program memory contents (then just rebuild in ISE).
Source: - AVR MCU (cut down) - http://opencores.org...ect,cpu_lecture - GPL - Fixed speed UART - Opencores - GPL
Tools Used - WinAVR 20100110 or newer - Xilinx 13.1 webpack
Source Code: small_avr.zip
Download Source Code