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/*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Alex Zuepke <azu@sysgo.de>
*
* Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
*
* 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 program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <common.h>
#include <SA-1100.h>
void serial_setbrg (void)
{
DECLARE_GLOBAL_DATA_PTR;
unsigned int reg = 0;
if (gd->baudrate == 1200)
reg = 191;
else if (gd->baudrate == 9600)
reg = 23;
else if (gd->baudrate == 19200)
reg = 11;
else if (gd->baudrate == 38400)
reg = 5;
else if (gd->baudrate == 57600)
reg = 3;
else if (gd->baudrate == 115200)
reg = 1;
else
hang ();
#ifdef CONFIG_SERIAL1
/* Wait until port is ready ... */
while (Ser1UTSR1 & UTSR1_TBY) {
}
/* init serial serial 1 */
Ser1UTCR3 = 0x00;
Ser1UTSR0 = 0xff;
Ser1UTCR0 = (UTCR0_1StpBit | UTCR0_8BitData);
Ser1UTCR1 = 0;
Ser1UTCR2 = (u32) reg;
Ser1UTCR3 = (UTCR3_RXE | UTCR3_TXE);
#elif CONFIG_SERIAL3
/* Wait until port is ready ... */
while (Ser3UTSR1 & UTSR1_TBY) {
}
/* init serial serial 3 */
Ser3UTCR3 = 0x00;
Ser3UTSR0 = 0xff;
Ser3UTCR0 = (UTCR0_1StpBit | UTCR0_8BitData);
Ser3UTCR1 = 0;
Ser3UTCR2 = (u32) reg;
Ser3UTCR3 = (UTCR3_RXE | UTCR3_TXE);
#else
#error "Bad: you didn't configured serial ..."
#endif
}
/*
* Initialise the serial port with the given baudrate. The settings
* are always 8 data bits, no parity, 1 stop bit, no start bits.
*
*/
int serial_init (void)
{
serial_setbrg ();
return (0);
}
/*
* Output a single byte to the serial port.
*/
void serial_putc (const char c)
{
#ifdef CONFIG_SERIAL1
/* wait for room in the tx FIFO on SERIAL1 */
while ((Ser1UTSR0 & UTSR0_TFS) == 0);
Ser1UTDR = c;
#elif CONFIG_SERIAL3
/* wait for room in the tx FIFO on SERIAL3 */
while ((Ser3UTSR0 & UTSR0_TFS) == 0);
Ser3UTDR = c;
#endif
/* If \n, also do \r */
if (c == '\n')
serial_putc ('\r');
}
/*
* Read a single byte from the serial port. Returns 1 on success, 0
* otherwise. When the function is succesfull, the character read is
* written into its argument c.
*/
int serial_tstc (void)
{
#ifdef CONFIG_SERIAL1
return Ser1UTSR1 & UTSR1_RNE;
#elif CONFIG_SERIAL3
return Ser3UTSR1 & UTSR1_RNE;
#endif
}
/*
* Read a single byte from the serial port. Returns 1 on success, 0
* otherwise. When the function is succesfull, the character read is
* written into its argument c.
*/
int serial_getc (void)
{
#ifdef CONFIG_SERIAL1
while (!(Ser1UTSR1 & UTSR1_RNE));
return (char) Ser1UTDR & 0xff;
#elif CONFIG_SERIAL3
while (!(Ser3UTSR1 & UTSR1_RNE));
return (char) Ser3UTDR & 0xff;
#endif
}
void
serial_puts (const char *s)
{
while (*s) {
serial_putc (*s++);
}
}
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