4
Communicating with the Outside World using the USART
This chapter will teach you to use the universal synchronous and asynchronous receiver-transmitter (USART), a dedicated two-way port that transfers information from the AVR to a computer and allows the two to communicate. The USART lets you control your AVR projects from a computer. It can also help you debug your projects, since you can send status reports from the AVR back to the computer to keep track of the code’s progress.
In this chapter you will:
- • Use terminal emulation software on your computer to act as an input and output device for your AVR-based projects.
- • Send serial data ...
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