STC8HK08单片机双串口实现附源程序 -

#include "intrins.h"
#include "stdio.h"
#include "STC8H.h"
#define FOSC 11059200UL
#define BRT (65536 - FOSC / 9600 / 4)//波特率
typedef unsigned char uchar;
typedef unsigned int uint;
sbit led7 = P1^4;
#define BUF_LENTH 0x20 //定义串口接收缓冲长度
#define TI2 (S2CON & 0x02) != 0
#define RI2 (S2CON & 0x01) != 0
#define CLR_TI2() S2CON &= ~0x02
#define CLR_RI2() S2CON &= ~0x01
unsigned char uart1_wr; //写指针
unsigned char uart1_rd; //读指针
unsigned char xdata U1TxBuf[BUF_LENTH];
unsigned char xdata U1RxBuf[BUF_LENTH];
bit B_TI;
sbit RX12 = P1^2;
sbit TX13 = P1^3;
unsigned char uart2_wr; //写指针
unsigned char uart2_rd; //读指针
unsigned char xdata U2TxBuf[BUF_LENTH];
unsigned char xdata U2RxBuf[BUF_LENTH];
bit B_TI2;
extern void U1Init(void);
extern void U2Init(void);
extern void U2Putch(uchar *ptr,uint len);
extern void U1Putch(uchar *ptr,uint len);
void main(void)
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;
P5M1 = 0x00;
U1Init();
U2Init();
IE2 = 0x01; //串口2中断
ES = 1; //串口1中断
EA = 1;//总中断
led7 = 1;
while (1)
{
if( (uart1_wr==1) )
{//收到1个数据
led7 =!led7;
U1Putch(U1RxBuf,1);
uart1_wr = 0;
}
if( (uart2_wr==1) )
{//收到1个数据
led7 =!led7;
U2Putch(U2RxBuf,1);
uart2_wr = 0;
}
}
}
void delay()
{
unsigned int len=50000;
while(len--);
}
void U1Init(void)
{
//串口1指针归位
uart1_rd = 0;
uart1_wr = 0;
//串口1寄存器设置
PCON &= 0x7F; //波特率不倍速
SCON = 0x50; //8位数据,可变波特率
AUXR |= 0x40; //定时器时钟1T模式
AUXR &= 0xFE; //串口1选择定时器1为波特率发生器
TMOD &= 0x0F; //设置定时器模式
TMOD |= 0x20; //设置定时器模式
TL1 = 0xDC; //设置定时初始值
TH1 = 0xDC; //设置定时重载值
ET1 = 0; //禁止定时器%d中断
TR1 = 1; //定时器1开始计时
// SCON = 0x50;
// TMOD = 0x00;
// TL1 = BRT;
// TH1 = BRT >> 8;
// TR1 = 1;
// AUXR = 0x40;
}
/*******************串口2初始化***************************/
void U2Init(void)
{
//串口2指针归位
uart2_rd = 0;
uart2_wr = 0;
// S2CON = 0x10;
// T2L = 0xe8; //65536-11059200/115200/4=0FFE8H
// T2H = 0xff;
// AUXR = 0x14; //启动定时器
// IE2 = 0x01; //使能串口中断
// EA = 1;
// S2BUF = 0x5a; //发送测试数据
//串口2寄存器设置可以用 STC工具自动生成的
// S2CON = 0x50; //8位数据,可变波特率
//
// AUXR |= 0x04; //定时器2时钟为Fosc,即1T
// T2L = 0xE0; //设定定时初值
// T2H = 0xFE; //设定定时初值
// AUXR |= 0x10; //启动定时器2
/*用下面这个配置也可以
STC的示例程序的配置
但是千万要注意!!!!!!!!!!!!!!下面这个配置的AUXR=0x14会把串口1寄存器给扰乱
所以要改成AUXR |= 0x14;
*/
S2CON = 0x10;
T2L = BRT; //65536-11059200/9600/4=0FFE8H
T2H = BRT>>8;
AUXR |= 0x14; //启动定时器
}
/*******************串口1发送一字节***************************/
void U1TxByte(unsigned char dat)
{
B_TI = 0;
SBUF = dat;
while(!B_TI);
B_TI = 0;
}
/*******************串口2发送一字节***************************/
void U2TxByte(unsigned char dat)
{
B_TI2 = 0;
S2BUF = dat;
while(!B_TI2);
B_TI2 = 0;
}
/*******************串口1发送指定长度数据***************************/
void U1Putch(uchar *ptr,uint len)
{
uchar idata cnt;
for(cnt=0;cnt<len;cnt++) U1TxByte(*ptr++);
}
/*******************串口1发送指定长度数据***************************/
void U2Putch(uchar *ptr,uint len)
{
uchar idata cnt;
for(cnt=0;cnt<len;cnt++) U2TxByte(*ptr++);
}
/*******************串口1发送一串字符串***************************/
void U1Print(unsigned char code *puts)
{
for (; *puts != 0; puts++) U1TxByte(*puts); //遇到停止符0结束
}
/*******************串口2发送一串字符串***************************/
void U2Print(unsigned char code *puts)
{
for (; *puts != 0; puts++) U2TxByte(*puts); //遇到停止符0结束
}
/*******************串口1中断***************************/
void UART1_RCV (void) interrupt 4
{
if(RI)
{
RI = 0;
U1RxBuf[uart1_wr] = SBUF;
if(++uart1_wr >= BUF_LENTH) uart1_wr = 0;
}
if(TI)
{
TI = 0;
B_TI = 1;
}
}
/*******************串口2中断***************************/
void UART2_RCV (void) interrupt 8
{
if(RI2)
{//接收
CLR_RI2();
U2RxBuf[uart2_wr] = S2BUF;
if(++uart2_wr >= BUF_LENTH) uart2_wr = 0;
}
if(TI2)
{//发送
CLR_TI2();
B_TI2 = 1;
}
}

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