com_pc-mcu

#include <REG52.H>  
 
unsigned char UART_buff;  
bit New_rec = 0, Send_ed = 1, Money = 0;  
void main (void)  
{  
    SCON = 0x50;     
    TMOD = 0x20;    
    TH1 = 0xFD;   
    TL1 = 0xFD;  
    TR1 = 1;                          
    ES  = 1;        
    EA  = 1;  
   while(Money == 0);    
    
    while(1)  
   {   
     if((New_rec == 1) && (Send_ed == 1)) 
         {  
             UART_buff = SBUF; 
            SBUF = UART_buff;   
         New_rec = 0;  
         Send_ed = 0;  
         }
   } 
}  
 
void ser_int (void) interrupt 4  
 
{  
     if(RI == 1) 
    {    
        RI = 0;      
         New_rec = 1;  
        UART_buff = SBUF;   
      if(UART_buff == '1')  Money = 1;  
            Money = 1; 
    }  
   
     else  
    {        
        TI = 0;      
         Send_ed = 1;  
    }  

}
View Code

 2.mcu sends a1234, pc receives 1234

 

#define MAIN_Fosc        11059200L     
#include    "15W4KxxS4.H"
#include <intrins.h>                     
           

#define  uint8 unsigned char
#define  uint16  unsigned int 

#define BAUD 9600                 
#define TM (65536 - (MAIN_Fosc/4/BAUD))    
 

volatile uint8 Flag=FALSE;
          
uint8  uart1temp;

 
void Uart1_Init(void)
{    
   
        
    PCON &= 0x3f;         
    SCON = 0x50;         
    AUXR |= 0x40;         
    AUXR &= 0xfe;         
    TMOD &= 0x0f;         
    TMOD |= 0x20;         
    TL1 = 0xDC;           
    TH1 = 0xDC;           
    ET1 = 0;             
    TR1 = 1;             
}
 
 
void SendDataByUart1(uint8 dat)
{ 
    if(!(dat^'a'))TI=1;    
    else
    {
        TI=0;
        SBUF = dat;                  
        while(TI == 0);             
        TI = 0;   
    }
}

 
void Uart1() interrupt UART1_VECTOR using 1
{
    ES = 0;                        
    Flag=TRUE;                   
    if (RI )                     
        {
         RI = 0;                  
         uart1temp = SBUF;       
        }
       if (TI)                    
        {
         TI = 0;                 
        }
       ES =  1;                    
}


void USART1_Tx_Puts(void)
{
  if(Flag)                 
    {    
        ES = 0;                                                  
    SendDataByUart1(uart1temp);        
        
        ES = 1;                                           
        Flag=FALSE;                       
  }
}

 
int main()
{ 
    Uart1_Init();
  ES = 1;                                      
     EA = 1;                                      
     while(1)
    {         
      USART1_Tx_Puts( ); 
  }        
    
     
}
View Code

 3. mcu uart3 receives string, uart4 sends string.

 

#define MAIN_Fosc        11059200L    //¶¨ÒåÖ÷ʱÖÓ
#include    "15W4KxxS4.H"
#include <intrins.h>                    // ¼ÓÈë´ËÍ·Îļþºó,¿ÉʹÓÃ_nop_¿âº¯Êý
#include <string.h>           // ¼ÓÈë´ËÍ·Îļþºó,¿ÉʹÓÃstrstr¿âº¯Êý

#define  uint8     unsigned char
#define  uint16    unsigned int  

#define S3RI 0x01
#define S3TI 0x02
#define S4RI 0x01
#define S4TI 0x02

#define BAUD 9600                // ²¨ÌØÂÊ     
#define Buf_Max 50

uint8 xdata Rec_Buf3[Buf_Max];       //½ÓÊÕ´®¿Ú3»º´æÊý×é
uint8 xdata Rec_Buf4[Buf_Max];       //½ÓÊÕ´®¿Ú4»º´æÊý×é
uint8 i = 0;     
uint8 j = 0;

/***************************************************************************
 * Ãè  Êö : ´®¿Ú3³õʼ»¯º¯Êý
 * Èë  ²Î : ÎÞ
 * ·µ»ØÖµ : ÎÞ
 **************************************************************************/
void Uart3_Init(void)
{                          
    S3CON |= 0x50;          //´®¿Ú3Ñ¡Ôñ¶¨Ê±Æ÷3Ϊ²¨ÌØÂÊ·¢ÉúÆ÷£¬Æô¶¯´®ÐнÓÊÕÆ÷
    S3CON &= 0x70;          //8λÊý¾Ý,¿É±ä²¨ÌØÂÊ

    T3H=(65536-(MAIN_Fosc/12/4/BAUD))/256;
    T3L=(65536-(MAIN_Fosc/12/4/BAUD))%256;
    
    T4T3M |= 0x08;       //ÔÊÐí¶¨Ê±Æ÷3ÔËÐÐ
    IE2 |= 0x08;         // ´®¿Ú3Öжϴò¿ª
    IE2 &= 0xDF;         // ¹Ø±Õ¶¨Ê±Æ÷3ÖжÏ
}

/***************************************************************************
 * Ãè  Êö : ´®¿Ú3·¢ËÍÊý¾Ýº¯Êý 
 * Èë  ²Î : uint8 Êý¾Ý
 * ·µ»ØÖµ : ÎÞ
 **************************************************************************/
void SendDataByUart3(uint8 dat)
{
    S3BUF = dat;                 //дÊý¾Ýµ½UARTÊý¾Ý¼Ä´æÆ÷
        while(!(S3CON&S3TI));        //ÔÚֹͣλûÓз¢ËÍʱ£¬S3TIΪ0¼´Ò»Ö±µÈ´ý
    S3CON&=~S3TI;                //Çå³ýS3CON¼Ä´æÆ÷¶ÔÓ¦S3TI루¸Ãλ±ØÐëÈí¼þÇåÁ㣩
}

/***************************************************************************
 * Ãè  Êö : ´®¿Ú3·¢ËÍ×Ö·û´®º¯Êý
 * Èë  ²Î : ×Ö·û´®
 * ·µ»ØÖµ : ÎÞ
 **************************************************************************/
void SendStringByUart3(uint8 *s)
{
    IE2 &= 0xF7;                            // ´®¿Ú3ÖжϹرÕ
      while (*s)                       //¼ì²â×Ö·û´®½áÊø±êÖ¾
    {
      SendDataByUart3(*s++);         //·¢Ë͵±Ç°×Ö·û
    }
    IE2 |= 0x08;                     // ´®¿Ú3Öжϴò¿ª
}

/**************************************
¹¦ÄÜÃèÊö£ºÎÕÊֳɹ¦Óë·ñº¯Êý
Èë¿Ú²ÎÊý£ºuint8 *a
·µ»ØÖµ£ºÎ»
***************************************/
bit Hand3(uint8 *a)
{ 
    if(strstr(Rec_Buf3,a)!=NULL)     //ÅжÏ×Ö·û´®aÊÇ·ñÊÇ×Ö·û´®Rec_Buf3µÄ×Ó´®
        return 1;                      //Èç¹û×Ö·û´®aÊÇ×Ö·û´®Rec_Buf3µÄ×Ó´®
    else
          return 0;                      //Èç¹û×Ö·û´®a²»ÊÇ×Ö·û´®Rec_Buf3µÄ×Ó´®
}

/**************************************
¹¦ÄÜÃèÊö£ºÇå³ý»º´æÄÚÈݺ¯Êý
Èë¿Ú²ÎÊý£ºÎÞ
·µ»ØÖµ£ºÎÞ
***************************************/
void CLR_Buf3(void)
{
      uint8 k;
    for(k=0;k<Buf_Max;k++)      //½«´®¿Ú3»º´æÊý×éµÄÖµ¶¼ÇåΪÁã
      {
               Rec_Buf3[k] = 0;
        }
    i = 0;                    
}

/***************************************************************************
 * Ãè  Êö : ´®¿Ú3ÖжϷþÎñº¯Êý
 * Èë  ²Î : ÎÞ
 * ·µ»ØÖµ : ÎÞ
 **************************************************************************/
void Uart3() interrupt UART3_VECTOR using 1
{
    IE2 &= 0xF7;                            // ´®¿Ú3ÖжϹرÕ
    if (S3CON & S3RI)                //´®ÐнÓÊÕµ½Í£Ö¹Î»µÄÖмäʱ¿Ìʱ£¬¸ÃλÖÃ1
  {
      S3CON &= ~S3RI;              //Çå³ýS3CON¼Ä´æÆ÷¶ÔÓ¦S3RI루¸Ãλ±ØÐëÈí¼þÇåÁ㣩
            Rec_Buf3[i] = S3BUF;         //°Ñ´®¿Ú3»º´æSBUF¼Ä´æÆ÷Êý¾ÝÒÀ´Î´æ·Åµ½Êý×éRec_Buf3ÖÐ
            i++;               
        if(i>Buf_Max)                //½ÓÊÕÊý´óÓÚ¶¨Òå½ÓÊÕÊý×é×î´ó¸öÊýʱ£¬¸²¸Ç½ÓÊÕÊý×é֮ǰֵ
                {
                    i = 0;
                }     
   }
  if (S3CON & S3TI)                //ÔÚֹͣλ¿ªÊ¼·¢ËÍʱ£¬¸ÃλÖÃ1
   {
      S3CON &= ~S3TI;                    //Çå³ýS3CON¼Ä´æÆ÷¶ÔÓ¦S3TI루¸Ãλ±ØÐëÈí¼þÇåÁ㣩
   }
     IE2 |= 0x08;                     // ´®¿Ú3Öжϴò¿ª
}

/***************************************************************************
 * Ãè  Êö : ´®¿Ú4³õʼ»¯º¯Êý
 * Èë  ²Î : ÎÞ
 * ·µ»ØÖµ : ÎÞ
 **************************************************************************/
void Uart4_Init(void)
{                          
    S4CON |= 0x50;          //´®¿Ú4Ñ¡Ôñ¶¨Ê±Æ÷4Ϊ²¨ÌØÂÊ·¢ÉúÆ÷£¬Æô¶¯´®ÐнÓÊÕÆ÷
    S4CON &= 0x70;          //8λÊý¾Ý,¿É±ä²¨ÌØÂÊ

    T4H=(65536-(MAIN_Fosc/12/4/BAUD))/256;
    T4L=(65536-(MAIN_Fosc/12/4/BAUD))%256;

    T4T3M |= 0x80;                                 //ÔÊÐí¶¨Ê±Æ÷4ÔËÐÐ
    IE2 |= 0x10;                                   // ´®¿Ú4Öжϴò¿ª
    IE2 &= 0xBF;         // ¹Ø±Õ¶¨Ê±Æ÷4ÖжÏ
}

/***************************************************************************
 * Ãè  Êö : ´®¿Ú4·¢ËÍÊý¾Ýº¯Êý
 * Èë  ²Î : uint8 Êý¾Ý
 * ·µ»ØÖµ : ÎÞ
 **************************************************************************/
void SendDataByUart4(uint8 dat)
{
    S4BUF = dat;                 //дÊý¾Ýµ½UARTÊý¾Ý¼Ä´æÆ÷
        while(!(S4CON&S4TI));        //ÔÚֹͣλûÓз¢ËÍʱ£¬S4TIΪ0¼´Ò»Ö±µÈ´ý
    S4CON&=~S4TI;                //Çå³ýS4CON¼Ä´æÆ÷¶ÔÓ¦S4TI루¸Ãλ±ØÐëÈí¼þÇåÁ㣩
}

/***************************************************************************
 * Ãè  Êö : ´®¿Ú4·¢ËÍ×Ö·û´®º¯Êý
 * Èë  ²Î : ×Ö·û´®
 * ·µ»ØÖµ : ÎÞ
 **************************************************************************/
void SendStringByUart4(char *s)
{
  IE2 &= 0xEF;                            //´®¿Ú4ÖжϹرÕ
    while (*s)                       //¼ì²â×Ö·û´®½áÊø±êÖ¾
  {
    SendDataByUart4(*s++);         //·¢Ë͵±Ç°×Ö·û
  }
  IE2 |= 0x10;                     //´®¿Ú4Öжϴò¿ª
}

/**************************************
¹¦ÄÜÃèÊö£ºÎÕÊֳɹ¦Óë·ñº¯Êý
Èë¿Ú²ÎÊý£ºunsigned char *a
·µ»ØÖµ£ºÎ»
***************************************/
bit Hand4(unsigned char *a)
{ 
  if(strstr(Rec_Buf4,a)!=NULL)       //ÅжÏ×Ö·û´®aÊÇ·ñÊÇ×Ö·û´®Rec_Buf4µÄ×Ó´®
        return 1;                      //Èç¹û×Ö·û´®aÊÇ×Ö·û´®Rec_Buf4µÄ×Ó´®
    else
          return 0;                      //Èç¹û×Ö·û´®a²»ÊÇ×Ö·û´®Rec_Buf4µÄ×Ó´®
}

/**************************************
¹¦ÄÜÃèÊö£ºÇå³ý»º´æÄÚÈݺ¯Êý
Èë¿Ú²ÎÊý£ºÎÞ
·µ»ØÖµ£ºÎÞ
***************************************/
void CLR_Buf4(void)
{
    unsigned char k;
  for(k=0;k<Buf_Max;k++)         //½«´®¿Ú4»º´æÊý×éµÄÖµ¶¼ÇåΪÁã
    {
         Rec_Buf4[k] = 0;
    }
  j = 0;                    
}

/***************************************************************************
 * Ãè  Êö : ´®¿Ú4ÖжϷþÎñº¯Êý
 * Èë  ²Î : ÎÞ
 * ·µ»ØÖµ : ÎÞ
 **************************************************************************/
void Uart4() interrupt UART4_VECTOR
{            
  IE2 &= 0xEF;                       // ´®¿Ú4ÖÐ¶Ï¹Ø±Õ  
    if(S4CON & S4RI)           //´®ÐнÓÊÕµ½Í£Ö¹Î»µÄÖмäʱ¿Ìʱ£¬¸ÃλÖÃ1
    {
        S4CON &= ~S4RI;             //Çå³ýS4CON¼Ä´æÆ÷¶ÔÓ¦S4RI루¸Ãλ±ØÐëÈí¼þÇåÁ㣩
        Rec_Buf4[j] = S4BUF;     //°Ñ´®¿Ú4»º´æSBUF¼Ä´æÆ÷Êý¾ÝÒÀ´Î´æ·Åµ½Êý×éRec_Buf4ÖÐ
        j++;               
      if(j>Buf_Max)            //½ÓÊÕÊý´óÓÚ¶¨Òå½ÓÊÕÊý×é×î´ó¸öÊýʱ£¬¸²¸Ç½ÓÊÕÊý×é֮ǰֵ
        {
                j = 0;
        }
    }
    if(S4CON & S4TI)           //ÔÚֹͣλ¿ªÊ¼·¢ËÍʱ£¬¸ÃλÖÃ1
    {
        S4CON &= ~S4TI;          //Çå³ýS4CON¼Ä´æÆ÷¶ÔÓ¦S4TI루¸Ãλ±ØÐëÈí¼þÇåÁ㣩
    }
     IE2 |= 0x10;              // ´®¿Ú4Öжϴò¿ª
}

/***************************************************************************
 * Ãè  Êö : Ö÷º¯Êý
 * Èë  ²Î : ÎÞ
 * ·µ»ØÖµ : ÎÞ
 **************************************************************************/
int main()
{
/////////////////////////////////////////////////
//×¢Òâ: STC15W4K32S4ϵÁеÄоƬ,ÉϵçºóËùÓÐÓëPWMÏà¹ØµÄIO¿Ú¾ùΪ
//      ¸ß×è̬,Ð轫ÕâЩ¿ÚÉèÖÃΪ׼˫Ïò¿Ú»òÇ¿ÍÆÍìģʽ·½¿ÉÕý³£Ê¹ÓÃ
//Ïà¹ØIO: P0.6/P0.7/P1.6/P1.7/P2.1/P2.2
//        P2.3/P2.7/P3.7/P4.2/P4.4/P4.5
/////////////////////////////////////////////////
  P0M1 &= 0xF0;    P0M0 &= 0xF0;      //ÉèÖÃP0.0~P0.3Ϊ׼˫Ïò¿Ú
    
    Uart3_Init();                                  // ´®¿Ú3³õʼ»¯
    Uart4_Init();                                     // ´®¿Ú4³õʼ»¯
    EA = 1;                                        // ×ÜÖжϴò¿ª
    
    while(1)
    {
        if(Hand3("UART3"))                            //  ÊÕµ½´ò¿ªLED1µÄÖ¸Áî
        {
            IE2 &= 0xF7;                                       // ´®¿Ú3ÖÐ¶Ï¹Ø±Õ            
            CLR_Buf3();                                 //½«´®¿Ú3»º´æÊý×éµÄÖµ¶¼ÇåΪÁã
            //SendStringByUart3("UART3 CHECK OK!
");        //´®¿Ú3·¢ËÍ×Ö·û´®UART3 CHECK OK!
            SendStringByUart4("UART4 CHECK OK!
");    
            
            IE2 |= 0x08;                                // ´®¿Ú3Öжϴò¿ª                    
        } 
        if(Hand4("UART4"))                            //  ÊÕµ½´ò¿ªLED1µÄÖ¸Áî
        {
            IE2 &= 0xEF;                                       // ´®¿Ú4ÖÐ¶Ï¹Ø±Õ        
            CLR_Buf4();                                 //½«´®¿Ú4»º´æÊý×éµÄÖµ¶¼ÇåΪÁã
            //SendStringByUart4("UART4 CHECK OK!
");        //´®¿Ú4·¢ËÍ×Ö·û´®UART4 CHECK OK!
            IE2 |= 0x10;                                // ´®¿Ú4Öжϴò¿ª                
        } 
    }
}
View Code

 4. mcu uart1 re a1234, uart2 send 1234

//pc send a1234 mcu send 1234
#define MAIN_Fosc        11059200L    //?????
#include    "15W4KxxS4.H"
#include <intrins.h>                    // ???????,???_nop_???
#include <string.h>           // ???????,???strstr???

#define  uint8 unsigned char
#define  uint16  unsigned int 

#define BAUD 9600                // ???
#define TM (65536 - (MAIN_Fosc/4/BAUD))    
#define Buf_Max 50
#define S2_S  0x00    
#define S2RI 0x01
#define S2TI 0x02
#define S3RI 0x01
#define S3TI 0x02
#define S4RI 0x01
#define S4TI 0x02

uint8 xdata Rec_Buf1[Buf_Max];     //????1????
uint8 xdata Rec_Buf2[Buf_Max];     //????2????
uint8 xdata Rec_Buf3[Buf_Max];       //????3????
uint8 xdata Rec_Buf4[Buf_Max];       //????4????
uint8 i = 0;              
uint8 j = 0; 
uint8 m = 0;              
uint8 n = 0;   
 

volatile uint8 Flag=FALSE;
          
uint8  uart1temp;

 
void Uart1_Init(void)
{    
   
        
    P_SW1|=0X80;        //??P16 P17???1
    P_SW1&=0XBF;        //??P16 P17???1
    P_SW2|=S2_S;        //??P46 P47???2
    //??1??    
    PCON &= 0x3f;            //??1??????,????????SM0?SM1??
    SCON = 0x50;            //??1?8???,?????,???????
    AUXR |= 0x01;            //??1?????2???????
    //??2??    
    S2CON = 0x50;            //??2?8???,?????    
  //??3??    
    S3CON |= 0x10;          //??3???????
    S3CON &= 0x30;          //??3?????2???????,8???,?????
    //??4??    
    S4CON |= 0x10;          //???????    
    S4CON &= 0x30;          //8???,?????,??4?????2???????
    
    AUXR |= 0x04;            //???2???Fosc,?1T
    T2L = 0xE0;              //??????
    T2H = 0xFE;         //??????
    AUXR |= 0x10;       //?????2       
}
 
 
void SendDataByUart1(uint8 dat)
{ 
    if(!(dat^'a'))TI=1;    
    else
    {
        TI=0;
        S2BUF = dat;                  
        while(!(S2CON&S2TI));        //?????????,S2TI?0?????
    S2CON&=~S2TI;    
    }
}

 
void Uart1() interrupt UART1_VECTOR using 1
{
    ES = 0;                        
    Flag=TRUE;                   
    if (RI )                     
        {
         RI = 0;                  
         uart1temp = SBUF;       
        }
       if (TI)                    
        {
         TI = 0;                 
        }
       ES =  1;                    
}


void USART1_Tx_Puts(void)
{
  if(Flag)                 
    {    
        ES = 0;                                                  
    SendDataByUart1(uart1temp);        
        
        ES = 1;                                           
        Flag=FALSE;                       
  }
}

 
int main()
{ 
    Uart1_Init();
  ES = 1;                                      
     EA = 1;                                      
     while(1)
    {         
      USART1_Tx_Puts( ); 
  }        
    
     
}
View Code

 5. mcu u1 rec a123,u2 send 1234; u1 re b123, u3 send 123; u1 rec c123, u4 send 123; u1 rec xxx, u1 send xxx;

//pc send a1234 mcu send 1234
#define MAIN_Fosc        11059200L    //?????
#include    "15W4KxxS4.H"
#include <intrins.h>                    // ???????,???_nop_???
#include <string.h>           // ???????,???strstr???

#define  uint8 unsigned char
#define  uint16  unsigned int 

#define BAUD 9600                // ???
#define TM (65536 - (MAIN_Fosc/4/BAUD))    
#define Buf_Max 50
#define S2_S  0x00    
#define S2RI 0x01
#define S2TI 0x02
#define S3RI 0x01
#define S3TI 0x02
#define S4RI 0x01
#define S4TI 0x02

uint8 xdata Rec_Buf1[Buf_Max];     //????1????
uint8 xdata Rec_Buf2[Buf_Max];     //????2????
uint8 xdata Rec_Buf3[Buf_Max];       //????3????
uint8 xdata Rec_Buf4[Buf_Max];       //????4????
uint8 i = 0;              
uint8 j = 0; 
uint8 m = 0;              
uint8 n = 0;   
uint8 td=0;
 

volatile uint8 Flag=FALSE;
          
uint8  uart1temp;

 
void Uart1_Init(void)
{    
   
        
    P_SW1|=0X80;        //??P16 P17???1
    P_SW1&=0XBF;        //??P16 P17???1
    P_SW2|=S2_S;        //??P46 P47???2
    //??1??    
    PCON &= 0x3f;            //??1??????,????????SM0?SM1??
    SCON = 0x50;            //??1?8???,?????,???????
    AUXR |= 0x01;            //??1?????2???????
    //??2??    
    S2CON = 0x50;            //??2?8???,?????    
  //??3??    
    S3CON |= 0x10;          //??3???????
    S3CON &= 0x30;          //??3?????2???????,8???,?????
    //??4??    
    S4CON |= 0x10;          //???????    
    S4CON &= 0x30;          //8???,?????,??4?????2???????
    
    AUXR |= 0x04;            //???2???Fosc,?1T
    T2L = 0xE0;              //??????
    T2H = 0xFE;         //??????
    AUXR |= 0x10;       //?????2       
}
 
 
void SendDataByUart1(uint8 dat)
{ 
     
 if(!(dat^'a')|!(dat^'b')|!(dat^'c')){TI=1; td= dat;   }//Èç¹ûÊÇaÔò²»·¢ËÍ
    else if(td=='a')
    {
            
        TI=0;
        S2BUF = dat;                  
        while(!(S2CON&S2TI));        //?????????,S2TI?0?????
    S2CON&=~S2TI;    
    }
     
    else if(td=='b')
    {
        TI=0;
        S3BUF = dat;                  
        while(!(S3CON&S3TI));        //?????????,S2TI?0?????
    S3CON&=~S3TI;    
    } 
     else if(td=='c')
    {
        TI=0;
        S4BUF = dat;                  
        while(!(S4CON&S4TI));        //?????????,S2TI?0?????
    S4CON&=~S4TI;    
    } 
   else  
    {
        TI=0;
        SBUF = dat;                  
        while(!TI);        //?????????,S2TI?0?????
        TI=0;    
    } 
   
    
}

 
void Uart1() interrupt UART1_VECTOR using 1
{
    ES = 0;                        
    Flag=TRUE;                   
    if (RI )                     
        {
         RI = 0;                  
         uart1temp = SBUF;       
        }
       if (TI)                    
        {
         TI = 0;                 
        }
       ES =  1;                    
}


void USART1_Tx_Puts(void)
{
  if(Flag)                 
    {    
        ES = 0;                                                  
    SendDataByUart1(uart1temp);        
        
        ES = 1;                                           
        Flag=FALSE;                       
  }
}

 
int main()
{ 
    Uart1_Init();
  ES = 1;                                      
     EA = 1;                                      
     while(1)
    {         
      USART1_Tx_Puts( ); 
    }        
    
     
}
View Code

 6.  ...5, u4 rec q, exit loop, enter new function

//pc send a1234 mcu send 1234
#define MAIN_Fosc        11059200L   
 
#define Main_Fosc_KHZ    (MAIN_Fosc / 1000) 
#include    "15W4KxxS4.H"
#include <intrins.h>                     
#include <string.h>           

#define  uint8 unsigned char
#define  uint16  unsigned int 
   
#define Buf_Max 50
uint8 data Rec_Buf[Buf_Max];
#define S2_S  0x00    
#define S2RI 0x01
#define S2TI 0x02
#define S3RI 0x01
#define S3TI 0x02
#define S4RI 0x01
#define S4TI 0x02

        
uint8 i = 0;              
uint8 j = 0; 
uint8 m = 0;              
uint8 n = 0;   
uint8 td=0;
 


volatile uint8 Flag=FALSE;
          
uint8  uart1temp;

 
void Uart1_Init(void)
{    
   
        
    P_SW1|=0X80;    //串口1在P1.6,P1.7    
    P_SW1&=0XBF;         
//    P_SW2|=S2_S;     //串口2在P1.0,P1.1    
//     
//    PCON &= 0x3f;            
//    SCON = 0x50;             //?
//    AUXR |= 0x01;            // T2
//     
//    S2CON = 0x50;            // 
//   
//    S3CON |= 0x10;          // 
//    S3CON &= 0x30;          // 
//     
//    S4CON |= 0x10;          // 
//    S4CON &= 0x30;          // 
//    
//    AUXR |= 0x04;            // 
//    T2L = 0xE0;              // 
//    T2H = 0xFE;         // 
//    AUXR |= 0x10;       //  

    SCON = 0x50;  
    S2CON = 0x50;        //8位数据,可变波特率
    S3CON = 0x10;        //8位数据,可变波特率
    S3CON &= 0xBF;        //串口3选择定时器2为波特率发生器
    S4CON = 0x10;        //8位数据,可变波特率
    S4CON &= 0xBF;        //串口4选择定时器2为波特率发生器
  SCON = 0x50;        //8位数据,可变波特率
    AUXR |= 0x01;        //串口1选择定时器2为波特率发生器
    AUXR |= 0x04;        //定时器2时钟为Fosc,即1T
    T2L = 0xE8;        //设定定时初值
    T2H = 0xFF;        //设定定时初值
    AUXR |= 0x10;        //启动定时器2





}
 
 
void SendDataByUart1(uint8 dat)
{ 
 if(!(dat^'a')|!(dat^'b')|!(dat^'c')|!(dat^'q')   ){TI=1; td= dat;   } 
    else if(td=='a')
    {
             
        S2BUF = dat;                  
        while(!(S2CON&S2TI));         
        S2CON&=~S2TI;    
    }
    
    else if(td=='b')
    {  
        S3BUF = dat;                  
        while(!(S3CON&S3TI));         
        S3CON&=~S3TI;    
    }  
        
        else if (td=='c')
    {    S4BUF = dat;                  
        while(!(S4CON&S4TI));         
                S4CON&=~S4TI;   
                 
    }  
}

 


void USART1_Tx_Puts(void)
{
  if(Flag)                 
    {    
        ES = 0;                                                  
    SendDataByUart1(uart1temp);        
         
        ES = 1;                                           
        Flag=FALSE;                       
  }
}
 
void SendDataByUart12(uint8 dat)
{       
        SBUF = dat; 
         while(! TI );         
         TI=0;    
   
} /*
void SendDataByUart12(uint8 dat)
{       
        SBUF = dat;                  
        while(!TI);         
                 TI=0;   
   
}*/
void USART1_Tx_Puts12(void)
{
  if(Flag)                 
    {    
        ES = 0;                                                  
    SendDataByUart12(uart1temp);        
        
        ES = 1;                                           
        Flag=FALSE;                       
  }
}
 
int main()
{ P1M1 &= 0x3F;    P1M0 &= 0x3F;      //设置P1.6~P1.7为准双向口
    Uart1_Init();
    ES = 1;                                      
    EA = 1;                                      
           
   
    while(1)
    {
         
     USART1_Tx_Puts ( ); 
          if( td=='q')
         {
             SBUF=0;
         break; 
         } 
    } 
    
    while(1)
    {
         
     USART1_Tx_Puts12  ( ); 
         
    } 
      
}

void Uart1() interrupt UART1_VECTOR using 1
{
    ES = 0;                        
    Flag=TRUE;                   
    if (RI )                     
        {
                     RI = 0;      
                     uart1temp = SBUF; 
                  Rec_Buf[i] = uart1temp;       //把串口1缓存SBUF寄存器数据依次存放到数组Rec_Buf中
                        i++;                      
                if(i>Buf_Max)             //接收数大于定义接收数组最大个数时，覆盖接收数组之前值
                    {
                        i = 0;                 
                    }         
        }    
        
       if (TI)                    
        {
         TI = 0;                 
        }
       ES =  1;                    
}
View Code
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原文地址：https://www.cnblogs.com/https/p/9697843.html