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 DECLARE_GLOBAL_DATA_PTR;
36 void serial_setbrg (void)
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 /* SA1110 uart function */
57 Ser1SDCR0 |= SDCR0_SUS;
59 /* Wait until port is ready ... */
60 while(Ser1UTSR1 & UTSR1_TBY) {}
62 /* init serial serial 1 */
65 Ser1UTCR0 = ( UTCR0_1StpBit | UTCR0_8BitData );
68 Ser1UTCR3 = ( UTCR3_RXE | UTCR3_TXE );
69 #elif defined(CONFIG_SERIAL3)
70 /* Wait until port is ready ... */
71 while (Ser3UTSR1 & UTSR1_TBY) {
74 /* init serial serial 3 */
77 Ser3UTCR0 = (UTCR0_1StpBit | UTCR0_8BitData);
79 Ser3UTCR2 = (u32) reg;
80 Ser3UTCR3 = (UTCR3_RXE | UTCR3_TXE);
82 #error "Bad: you didn't configured serial ..."
88 * Initialise the serial port with the given baudrate. The settings
89 * are always 8 data bits, no parity, 1 stop bit, no start bits.
92 int serial_init (void)
101 * Output a single byte to the serial port.
103 void serial_putc (const char c)
105 #ifdef CONFIG_SERIAL1
106 /* wait for room in the tx FIFO on SERIAL1 */
107 while ((Ser1UTSR0 & UTSR0_TFS) == 0);
110 #elif defined(CONFIG_SERIAL3)
111 /* wait for room in the tx FIFO on SERIAL3 */
112 while ((Ser3UTSR0 & UTSR0_TFS) == 0);
117 /* If \n, also do \r */
123 * Read a single byte from the serial port. Returns 1 on success, 0
124 * otherwise. When the function is succesfull, the character read is
125 * written into its argument c.
127 int serial_tstc (void)
129 #ifdef CONFIG_SERIAL1
130 return Ser1UTSR1 & UTSR1_RNE;
131 #elif defined(CONFIG_SERIAL3)
132 return Ser3UTSR1 & UTSR1_RNE;
137 * Read a single byte from the serial port. Returns 1 on success, 0
138 * otherwise. When the function is succesfull, the character read is
139 * written into its argument c.
141 int serial_getc (void)
143 #ifdef CONFIG_SERIAL1
144 while (!(Ser1UTSR1 & UTSR1_RNE));
146 return (char) Ser1UTDR & 0xff;
147 #elif defined(CONFIG_SERIAL3)
148 while (!(Ser3UTSR1 & UTSR1_RNE));
150 return (char) Ser3UTDR & 0xff;
155 serial_puts (const char *s)