STC15F2K60S2串口2程序

下面是串口2的程序，昨天一直沒(méi)調(diào)出來(lái)的原因是由于串口發(fā)送完中斷標(biāo)志位，置位和清零上出了問(wèn)題。其中為什么要把它，照著資料手冊(cè)上那種方式寫才行，這我現(xiàn)在也沒(méi)大清楚，我想可能這需要反匯編才看的出來(lái)，由于競(jìng)賽時(shí)間緊，只有暫且放下進(jìn)一步的分析，下面是程序代碼。

#include "reg51.h"

sfr P4 = 0xc0;

sfr P5 = 0xc8;

sfr AUXR = 0x8e ;

sfr S2CON = 0x9a ;

sfr S2BUF = 0x9b ;

sfr T2H = 0xd6 ;

sfr T2L = 0xd7 ;

sfr IE2 = 0xaf ;

sfr IP2 = 0xb5 ;

#define S2RI 0x01 // S2CON.0

#define S2TI 0x02 // S2CON.1

unsigned char temp ;

bit flag1 = 0 , flag2 = 0 , busy = 0 ;

unsigned char xdata Uart1TxBuffer [20] = "杜興杰你必須加油個(gè)"; //

void SendData ( unsigned char date ) ; //數(shù)據(jù)發(fā)送函數(shù)定義

void Uart2Init(void) //9600bps@11.0592MHz

{

S2CON = 0x50; //8位數(shù)據(jù),可變波特率

AUXR |= 0x04; //定時(shí)器2時(shí)鐘為Fosc,即1T

T2L = 0xE0; //設(shè)定定時(shí)初值

T2H = 0xFE; //設(shè)定定時(shí)初值

AUXR |= 0x14; //啟動(dòng)定時(shí)器2 4 注意這里

EA = 1 ;

IE2 = 0x01 ; //開(kāi)啟串口中斷ES2

IP2 |= 0x00 ; //串口2優(yōu)先級(jí)0

}

void main( void )

{

char i ;

P0 = 0 ;

Uart2Init() ;

SendData (C) ;

SendData (C) ;

for ( i = 0 ; i < 20 ; i++ )

{

SendData (Uart1TxBuffer[i]) ;

}

for ( i = 0 ; i < 20 ; i++ )

{

SendData (Uart1TxBuffer[i]) ;

}

SendData (C) ;

SendData (C) ;

while(1)

{

if( flag2 == 1 )

{

SendData ( temp );

flag2 = 0 ;

}

}

}

void Uart2( void ) interrupt 8

{

if( S2CON & S2RI )

{

S2CON &= ~ S2RI ;

temp = S2BUF ;

flag2 = 1 ;

}

if( S2CON & S2TI )

{

S2CON &= ~ S2TI ;

busy = 0 ;

}

}

void SendData ( unsigned char date )

{

while ( busy ) ; //

busy = 1 ;

S2BUF = date ;

// while ( !( S2CON & 0x02 ) ) ;

// S2CON &= ~ S2TI ;

}

下一步是把串口1和串口2 加在一起，還有就是加入循環(huán)隊(duì)列實(shí)現(xiàn)流控等