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UART 的代码
uart.c
#include
#include
#define fosc 1000000 //晶振1MHZ
#define baud 19200 //波特率
/* 字符输出函数 */
void putchar(unsigned char c)
{
while (!(UCSRA&(1
uart.o
XL
H 1 areas 4 global symbols
M uart.c
A text size 5E flags 0
dbfile C:\TDdownload\zxy\169demo\169RTC\uart.c
dbfunc e putchar 0 fV
dbsym r c 10 c
dbline FFFFFFFF 0
dbline 7 0
dbline 8 0
dbli
uart._h
/* 字符输出函数 */
void putchar(unsigned char c);
/* 字符输入函数 */
unsigned char getchar(void);
/* 字符串输出函数 */
void puts(char *s);
/* UART初始化 */
void uart_init(void);
uart.s
.module uart.c
.area text(rom, con, rel)
.dbfile C:\TDdownload\zxy\169demo\169RTC\uart.c
.dbfunc e putchar _putchar fV
; c -> R16
.even
_putchar::
.dbline -1
.dbline 7
; #
uart.lst
C51 COMPILER V7.50 UART 12/13/2005 13:14:02 PAGE 1
C51 COMPILER V7.50, COMPILATION OF MODULE UART
OBJECT MODULE PLACED IN .\
uart.c
/*------------------------------------------------------------------------------
; This file is part of the RLC instruction
; Copyright (c)
; Version: 1.0
;------------------------------------
uart.cmd
-w
-stack 500
-sysstack 500
-l rts55x.lib
MEMORY {
DATA(RWI): origin = 0x2200, len = 0x1000
PROG: origin = 0x200, len = 0x2000
VECT: origin = 0xd000,
uart.c
#define UART_BASE_ADDR 0x400400
#define RBR *((int *)(UART_BASE_ADDR+0))
#define THR *((int *)(UART_BASE_ADDR+0))
#define IER *((int *)(UART_BASE_ADDR+1))
#define IIR *((int *)(UART