usart_driver.c File Reference

XMEGA USART driver source file. More...

#include "usart_driver.h"

Detailed Description

XMEGA USART driver source file.

 This file contains the function implementations the XMEGA interrupt
 and polled USART driver.

 The driver is not intended for size and/or speed critical code, since
 most functions are just a few lines of code, and the function call
 overhead would decrease code performance. The driver is intended for
 rapid prototyping and documentation purposes for getting started with
 the XMEGA ADC module.

 For size and/or speed critical code, it is recommended to copy the
 function contents directly into your application instead of making
 a function call.

 Some functions use the following construct:
     "some_register = ... | (some_parameter ? SOME_BIT_bm : 0) | ..."
 Although the use of the ternary operator ( if ? then : else ) is discouraged,
 in some occasions the operator makes it possible to write pretty clean and
 neat code. In this driver, the construct is used to set or not set a
 configuration bit based on a boolean input parameter, such as
 the "some_parameter" in the example above.

Application note:

AVR1307: Using the XMEGA USART

Documentation

For comprehensive code documentation, supported compilers, compiler settings and supported devices see readme.html

Author

Atmel Corporation: http://www.atmel.com
Support email: avr@a.nosp@m.tmel.nosp@m..com

Revision:

1694

Date:

2008-07-29 14:21:58 +0200 (ti, 29 jul 2008)

Copyright (c) 2008, Atmel Corporation All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

1. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

1. The name of ATMEL may not be used to endorse or promote products derived from this software without specific prior written permission.

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