/*
 * uart.h
 *
 * Interface declarations for UART initalization and printf() setup using avr-libc.
 *
 * After including uart.c and uart.h into your project and calling uart_init(),
 * you can use printf() for serial port output, for instance to communicate with a
 * PC over RS-232.
 *
 * Even though it has nothing to do with use of the UART, but rather printf():
 *
 * To printf() floating point values, you need to add the following to your AVR
 * Studio project's Linker Options: (Project->Configuration Options->Custom Options->Linker Options):
 * (copy and paste the entire line below):
 *
 *   -Wl,-u,vfprintf -lprintf_flt -lm
 * 
 * This functionality requires a significant amount of extra library code to be included
 * in the final program image, and so is not specified by default.
 *
 * For more information about using the UART with avr-libc's printf functions,
 * see the "Detailed Description" section in
 *   http://www.nongnu.org/avr-libc/user-manual/group__avr__stdio.html .
 *
 * Last modified 2010-09-09 15:27
 */

#ifndef UART_H
#define UART_H

/*
 * This function must be called to be able to use the UART for printf() output.
 */
void uart_init(void);

#endif