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)
56 /* Wait until port is ready ... */
57 while (Ser1UTSR1 & UTSR1_TBY) {
60 /* init serial serial 1 */
63 Ser1UTCR0 = (UTCR0_1StpBit | UTCR0_8BitData);
65 Ser1UTCR2 = (u32) reg;
66 Ser1UTCR3 = (UTCR3_RXE | UTCR3_TXE);
68 /* Wait until port is ready ... */
69 while (Ser3UTSR1 & UTSR1_TBY) {
72 /* init serial serial 3 */
75 Ser3UTCR0 = (UTCR0_1StpBit | UTCR0_8BitData);
77 Ser3UTCR2 = (u32) reg;
78 Ser3UTCR3 = (UTCR3_RXE | UTCR3_TXE);
80 #error "Bad: you didn't configured serial ..."
86 * Initialise the serial port with the given baudrate. The settings
87 * are always 8 data bits, no parity, 1 stop bit, no start bits.
90 int serial_init (void)
99 * Output a single byte to the serial port.
101 void serial_putc (const char c)
103 #ifdef CONFIG_SERIAL1
104 /* wait for room in the tx FIFO on SERIAL1 */
105 while ((Ser1UTSR0 & UTSR0_TFS) == 0);
109 /* wait for room in the tx FIFO on SERIAL3 */
110 while ((Ser3UTSR0 & UTSR0_TFS) == 0);
115 /* If \n, also do \r */
121 * Read a single byte from the serial port. Returns 1 on success, 0
122 * otherwise. When the function is succesfull, the character read is
123 * written into its argument c.
125 int serial_tstc (void)
127 #ifdef CONFIG_SERIAL1
128 return Ser1UTSR1 & UTSR1_RNE;
130 return Ser3UTSR1 & UTSR1_RNE;
135 * Read a single byte from the serial port. Returns 1 on success, 0
136 * otherwise. When the function is succesfull, the character read is
137 * written into its argument c.
139 int serial_getc (void)
141 #ifdef CONFIG_SERIAL1
142 while (!(Ser1UTSR1 & UTSR1_RNE));
144 return (char) Ser1UTDR & 0xff;
146 while (!(Ser3UTSR1 & UTSR1_RNE));
148 return (char) Ser3UTDR & 0xff;
153 serial_puts (const char *s)