STC8F2K32S2双串口应用的问题

只看该作者 · 2017-9-25 09:20

用了UART1和UART2，但只有UART2有输出，UART1没有，都是用T2作波特率发生器的，程序如下：
//#include "reg51.h"
#include "stc8.h"
#include "intrins.h"
#define FOSC          11059200UL
#define BRT          (65536 - FOSC / 9600 / 4)//115200
/* sfr    AUXR       = 0x8e;
sfr    T2H       = 0xd6;
sfr    T2L       = 0xd7;
sfr    S2CON    = 0x9a;
sfr    S2BUF    = 0x9b;
sfr    IE2       = 0xaf; */
bit busy;
bit T10mS;
char wptr;
char rptr;
char buffer[16];
void Uart2Isr() interrupt 8 using 1
{
if (S2CON & 0x02)
{
      S2CON &= ~0x02;
      busy = 0;
}
if (S2CON & 0x01)
{
      S2CON &= ~0x01;
}
}
void Uart2Init()
{
S2CON = 0x50;
T2L = BRT;
T2H = BRT >> 8;
AUXR = 0x14;//
wptr = 0x00;
rptr = 0x00;
busy = 0;
  P3M0=0x3;//P3.0,3.1准双向口
  P3M1=0xfc;//P3.2-P3.7高阻输入
  P1M0=0x7f;//P0.0,0.1准双向口，其它推挽输出
  P1M1=0x80;//P1.7高阻输入
  //ES = 1;                                  //使能串口中断
}
void Uart2Send(char _data)
{
  P_SW1 = 0x40;    //RXD_2 TXD_2
while (busy);
  busy = 1;
  S2BUF = _data;                //发送当前数据
}

void Uart2SendStr(char *p)
{
while (*p)
{
      Uart2Send(*p++);
}
}
void Delay1000ms()  //@11.0592MHz
{
unsigned char i, j, k;
_nop_();
_nop_();
i = 43;
j = 6;
k = 203;
do
{
  do
  {
while (--k);
  } while (--j);
} while (--i);
}
void UART1(unsigned char _data)
{
P_SW1 = 0x00; //RXD/P3.0, TXD/P3.1
_nop_();
TI=0;
SBUF=_data;  //
while(!TI);
TI=0;
}
void Timer1Init(void)  //50毫秒@11.0592MHz
{
AUXR &= 0xBF;  //定时器时钟12T模式
TMOD &= 0x0F;  //设置定时器模式
TL1 = 0x00;  //设置定时初值
TH1 = 0xdC;  //设置定时初值
TF1 = 0;  //清除TF1标志
TR1 = 1;  //定时器1开始计时
//ET1=1;
EA=1;
}
void main()
{
  unsigned char i;
Uart2Init();
//Timer1Init();
IE2 = 0x01;
EA = 1;
Uart2SendStr("Uart Test !\r\n");
  UART1(0x55);
while (1)
{
   Delay1000ms();
//if(T10mS)
{
T10mS=0;
i++;
//if(i==20)
{
   Uart2SendStr("Uart Test !\r\n");
   i=0;
   _nop_();_nop_();_nop_();_nop_();_nop_();
   UART1(0x55);
}
}
}
}
/* void TM1_Isr() interrupt 3 using 1
{
  T10mS=1;//1mS
} */