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USART 的代码
usart.h
#ifndef __USART_H__
#define __USART_H__
#define UTXD BIT4
#define URXD BIT5
extern uint r0,s0,rr0,StartAddr;
extern uchar RXFLG,TXFLG,CS,SS1,ACC,aa,CY,Command_Status1;
extern uchar r_bu
usart.c
//ICC-AVR application builder : 2007-6-4 15:31:38
// Target : M8
// Crystal: 1.0000Mhz
//usart test 2007-06-04
#include
#include
/*void port_init(void)
{
PORTB = 0x00
usart.c
#include
#include
#include
#include "main.h"
//常量定义
#define BAUDRATE 9600 //波特率
//#define F_CPU 7372800 //这个已经在makefile里面定义了
void in
usart.h
#define BAUDRATE 9600 //波特率
#define F_CPU 8000000
//波特率9600/9个数据位/1个停止位/奇校验/收发开启/接收中断
void usart_init(void)
{
UCSR1A=0x01;
UCSR1B=0x9C;
UCSR1C=0x36;
UBRR1L= (F_CPU/BAUDRATE
usart._h
#define BAUDRATE 9600 //波特率
#define F_CPU 8000000
//波特率9600/9个数据位/1个停止位/奇校验/收发开启/接收中断
void usart_init(void)
{
UCSR1A=0x01;
UCSR1B=0x9C;
UCSR1C=0xB6;
UBRR1L= (F_CPU/BAUDRATE
usart.h
#define BAUDRATE 9600 //波特率
#define F_CPU 8000000
//波特率9600/9个数据位/1个停止位/奇校验/收发开启/接收中断
void usart_init(void)
{
UCSR1A=0x01;//多机通讯模式(MPCM=1)
UCSR1B=0x9C;
UCSR1C=0x36;
UBR
usart._h
#define BAUDRATE 9600 //波特率
#define F_CPU 8000000
//波特率9600/9个数据位/1个停止位/奇校验/收发开启/接收中断
void usart_init(void)
{
UCSR1A=0x01;//多机通讯模式(MPCM=1)
UCSR1B=0x9C;
UCSR1C=0x36;
UBR
usart.h
#define BAUDRATE 9600 //波特率
#define F_CPU 8000000
//波特率9600/9个数据位/1个停止位/奇校验/收发开启/接收中断
void usart_init(void)
{
UCSR1A=0x01;
UCSR1B=0x9C;
UCSR1C=0x36;
UBRR1L= (F_CPU/BAUDRATE
usart._h
#define BAUDRATE 9600 //波特率
#define F_CPU 8000000
//波特率9600/9个数据位/1个停止位/奇校验/收发开启/接收中断
void usart_init(void)
{
UCSR1A=0x01;
UCSR1B=0x9C;
UCSR1C=0xB6;
UBRR1L= (F_CPU/BAUDRATE
usart.h
//*-----------------------------------------------------------------------------
//* ATMEL Microcontroller Software Support - ROUSSET -
//*---------------------------------------------------