3 * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
6 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 * Marius Groeger <mgroeger@sysgo.de>
10 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
11 * Alex Zuepke <azu@sysgo.de>
13 * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
34 void serial_setbrg (void)
36 DECLARE_GLOBAL_DATA_PTR;
40 if (gd->baudrate == 1200)
42 else if (gd->baudrate == 9600)
44 else if (gd->baudrate == 19200)
46 else if (gd->baudrate == 38400)
48 else if (gd->baudrate == 57600)
50 else if (gd->baudrate == 115200)
55 /* init serial serial 1,2 */
56 IO_SYSCON1 = SYSCON1_UART1EN;
57 IO_SYSCON2 = SYSCON2_UART2EN;
59 reg |= UBRLCR_WRDLEN8;
67 * Initialise the serial port with the given baudrate. The settings
68 * are always 8 data bits, no parity, 1 stop bit, no start bits.
71 int serial_init (void)
80 * Output a single byte to the serial port.
82 void serial_putc (const char c)
86 /* If \n, also do \r */
90 tmo = get_timer (0) + 1 * CFG_HZ;
91 while (IO_SYSFLG1 & SYSFLG1_UTXFF)
92 if (get_timer (0) > tmo)
99 * Read a single byte from the serial port. Returns 1 on success, 0
100 * otherwise. When the function is succesfull, the character read is
101 * written into its argument c.
103 int serial_tstc (void)
105 return !(IO_SYSFLG1 & SYSFLG1_URXFE);
109 * Read a single byte from the serial port. Returns 1 on success, 0
110 * otherwise. When the function is succesfull, the character read is
111 * written into its argument c.
113 int serial_getc (void)
115 while (IO_SYSFLG1 & SYSFLG1_URXFE);
117 return IO_UARTDR1 & 0xff;
121 serial_puts (const char *s)