ATMEL: uart_bdr.h Source File

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# uart_bdr.h

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    00001 /*This file is prepared for Doxygen automatic documentation generation.*/
    00013
    00014 /* Copyright (c) 2009 Atmel Corporation. All rights reserved.
    00015  *
    00016  * Redistribution and use in source and binary forms, with or without
    00017  * modification, are permitted provided that the following conditions are met:
    00018  *
    00019  * 1. Redistributions of source code must retain the above copyright notice,
    00020  * this list of conditions and the following disclaimer.
    00021  *
    00022  * 2. Redistributions in binary form must reproduce the above copyright notice,
    00023  * this list of conditions and the following disclaimer in the documentation
    00024  * and/or other materials provided with the distribution.
    00025  *
    00026  * 3. The name of Atmel may not be used to endorse or promote products derived
    00027  * from this software without specific prior written permission.
    00028  *
    00029  * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
    00030  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
    00031  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE EXPRESSLY AND
    00032  * SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
    00033  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    00034  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    00035  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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    00038  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    00039  */
    00040
    00041 #ifndef _UART_BDR_H
    00042 #define _UART_BDR_H
    00043
    00044 #ifndef __GNUC__
    00045    #define Uart_set_baudrate(bdr)  ( UBRRH = (Uchar)((((Uint32)FOSC*1000L)/((Uint32)bdr*16)-1)>>8),\
    00046                                   UBRRL = (Uchar)(((Uint32)FOSC*1000 )/((Uint32)bdr*16)-1)    )
    00047 #else
    00048   #define Uart_set_baudrate(bdr)  ( UBRR = (U16)(((U32)FOSC*1000L)/((U32)bdr*16)-1))
    00049 #endif
    00050
    00051 #define Uart_double_bdr()          (UCSRA |= (1<<U2X1))
    00052
    00053 #endif/* _UART_BDR_H */
    00054