In this video:

• Reference Tutorial on"AVR^® Freaks: Modularizing C Code: Managing Large Projects (by Dean Camera)"
• Grey out code that will not compile as part of your project (e.g. through#IFDEF), using Naggy (Available from the extension manager)
• Move defines and function prototypes, used in relation to the USART, to a header file:USART_irq.h.
• Move USART functions and variables toUSART_irq.c.
• Use of theExtern keyword is highlighted for global variables.
• Add include files.
• AddUSART_irq.h to bothmain.c andUSART_irq.h.

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