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Diffstat (limited to 'cpu/mc9328/serial.c')
-rw-r--r-- | cpu/mc9328/serial.c | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/cpu/mc9328/serial.c b/cpu/mc9328/serial.c deleted file mode 100644 index 8dcfb8027..000000000 --- a/cpu/mc9328/serial.c +++ /dev/null @@ -1,133 +0,0 @@ -/* - * cpu/mc9328/serial.c - * - * (c) Copyright 2004 - * Techware Information Technology, Inc. - * http://www.techware.com.tw/ - * - * Ming-Len Wu <minglen_wu@techware.com.tw> - * - * 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 <mc9328.h> - -#if defined(CONFIG_UART1) -/* GPIO PORT B */ - -#define reg_GIUS MX1_GIUS_C -#define reg_GPR MX1_GPR_B -#define GPIO_MASK 0xFFFFE1FF -#define UART_BASE 0x00206000 - -#elif defined (CONFIG_UART2) -/* GPIO PORT C */ - -#define reg_GIUS MX1_GIUS_C -#define reg_GPR MX1_GPR_C -#define GPIO_MASK 0x0FFFFFFF -#define UART_BASE 0x207000 - -#endif - -#define reg_URXD (*((volatile u32 *)(UART_BASE+0x00))) -#define reg_UTXD (*((volatile u32 *)(UART_BASE+0x40))) -#define reg_UCR1 (*((volatile u32 *)(UART_BASE+0x80))) -#define reg_UCR2 (*((volatile u32 *)(UART_BASE+0x84))) -#define reg_UCR3 (*((volatile u32 *)(UART_BASE+0x88))) -#define reg_UCR4 (*((volatile u32 *)(UART_BASE+0x8C))) -#define reg_UFCR (*((volatile u32 *)(UART_BASE+0x90))) -#define reg_USR1 (*((volatile u32 *)(UART_BASE+0x94))) -#define reg_USR2 (*((volatile u32 *)(UART_BASE+0x98))) -#define reg_UESC (*((volatile u32 *)(UART_BASE+0x9C))) -#define reg_UTIM (*((volatile u32 *)(UART_BASE+0xA0))) -#define reg_UBIR (*((volatile u32 *)(UART_BASE+0xA4))) -#define reg_UBMR (*((volatile u32 *)(UART_BASE+0xA8))) -#define reg_UBRC (*((volatile u32 *)(UART_BASE+0xAC))) - -#define TXFE_MASK 0x4000 /* Tx buffer empty */ -#define RDR_MASK 0x0001 /* receive data ready */ - -void serial_setbrg (void) { - - /* config I/O pins for UART */ - reg_GIUS &= GPIO_MASK; - reg_GPR &= GPIO_MASK; - - /* config UART */ - reg_UCR1 = 5; - reg_UCR2 = 0x4027; - reg_UCR4 = 1; - reg_UFCR = 0xA81; - - reg_UBIR = 0xF; - reg_UBMR = 0x8A; - reg_UBRC = 8; -} - -/* - * 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); -} - -/* - * 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) { - - while (!(reg_USR2 & RDR_MASK)) ; /* wait until RDR bit set */ - - return (u8)reg_URXD; -} - -/* - * Output a single byte to the serial port. - */ -void serial_putc (const char c) { - - while (!(reg_USR2 & TXFE_MASK)); /* wait until TXFE bit set */ - - reg_UTXD = (u16) c; - - if (c == '\n') { /* carriage return ? append line-feed */ - while (!(reg_USR2 & TXFE_MASK)); /* wait until TXFE bit set */ - reg_UTXD = '\r'; - } - -} - -/* - * Test whether a character is in the RX buffer - */ -int serial_tstc (void) { - return reg_USR2 & RDR_MASK; -} - -void serial_puts (const char *s) { - while (*s) { - serial_putc (*s++); - } -} |