AVR Input/Output expansion
==========================

Parts
-----
Whole library consists from set of parts. You can use any part directly or
only trough other part. Every part can be enabled or disabled.

| Parts                            | Header   | Description                                            |
|----------------------------------|----------|--------------------------------------------------------|
| [IO Ports](references/ioport.md) | ioport.h | Simple input/output port access                        |
| [SPI](references/spi.md)         | spi.h    | Serial peripheral interface                            |
| [USART](references/usart.md)     | usart.h  | Universal synchronous/asynchronous receive/transmitter |