rockbox/firmware/target/coldfire/uart-coldfire.c

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Alan Korr & Nick Robinson
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "config.h"
#include "cpu.h"
#include "system.h"
#include "serial.h"
void serial_setup (void)
{
UCR0 = 0x30; /* Reset transmitter */
UCSR0 = 0xdd; /* Timer mode */
UCR0 = 0x10; /* Reset pointer */
UMR0 = 0x13; /* No parity, 8 bits */
UMR0 = 0x07; /* 1 stop bit */
UCR0 = 0x04; /* Tx enable */
}
int tx_rdy(void)
{
if(USR0 & 0x04)
return 1;
else
return 0;
}
int rx_rdy(void)
{
/* a dummy */
return 0;
}
void tx_writec(unsigned char c)
{
UTB0 = c;
}