serial.c

完整的实现RS232与TCP/IP网络协议的转换

#include <uip\uip.h>
#include "uip\uip.h"
#include "serial.h"
#include <R8051.H>
#include <LCD\LCD.h>

sbit   LED_RED  = P3 ^ 3;
sbit   LED_GRE  = P3 ^ 4; 

UBYTE  Rec_len=0;
UBYTE  Rec_data[100];
UBYTE  dataRec_timecount=0;
bit uip_connected=0; //tcp connected or not;
bit data_Rec=0;  //rec at least 1 byte when in tuip_connected;
//UBYTE  idata test[18];
//***********************串口初始化波特率定义*****原有********************
#define OSC_FREQ               22118400L
#define BAUD_115200             256 - (OSC_FREQ/192L)/115200L
#define BAUD_57600              256 - (OSC_FREQ/192L)/57600L
#define BAUD_38400              256 - (OSC_FREQ/192L)/38400L
#define BAUD_28800              256 - (OSC_FREQ/192L)/28800L
#define BAUD_19200              256 - (OSC_FREQ/192L)/19200L
#define BAUD_14400              256 - (OSC_FREQ/192L)/14400L
#define BAUD_9600               256 - (OSC_FREQ/192L)/9600L
#define BAUD_4800               256 - (OSC_FREQ/192L)/4800L
#define BAUD_2400               256 - (OSC_FREQ/192L)/2400L
#define BAUD_1200               256 - (OSC_FREQ/192L)/1200L
//*********************************************************************
void InitSerial_0(void)
{
	///////////////////////////////////////////////////////////////////////////
	//-if you need isd(in system debugger)you need add the list code in your main
	//--------------add for serial bebug s0----------zhzhl-------
	SCON  = 0x50;      /* enable serial uart & receiver  s0,mode 1    */
	PCON = PCON | 0x80;

    TMOD|=0X20; //TIMER1: MODE 2, ;
	TH1=BAUD_9600;//BAUD_19200 ; // BAUD_9600;//BAUD_4800;//247;    //32M-->18938
	TL1=BAUD_9600;//BAUD_19200 ; // BAUD_9600;//BAUD_4800;//247;
	TR1=1;     //TIMER1 START;
	//-----------end of s0 initial ----------------------------
	ES=1;
}


void serial(void) interrupt 4
{    
    if(RI)
	{
        RI=0;
        if(Rec_len<100) Rec_data[Rec_len++]=SBUF;
//SBUF=Rec_data[Rec_len-1];//FOR TEST
#if UIP_ACTIVE_OPEN
           if(!data_Rec) data_Rec=1;
		   dataRec_timecount=0;
#else

        if(uip_connected)
		{
           if(!data_Rec) data_Rec=1;
		   dataRec_timecount=0;
		}
#endif
	}

   // if(TI) TI=0;    
}

////////////////////////////////////////////////////////////////
//print xdata memory(hex);
//pxdata: start address
//n: byte number
//e.g: Uart0_printR(0x8800,4); will print: 0x** ** ** **;
////////////////////////////////////////////////////////////////

void Uart0_printR(UBYTE *pxdata, UWORD n)
{
 UWORD i;
// ES=0;   //stop uart1 interrupt;
 TI=0;
 for(i=0;i<n;i++)
 {
  // j=(*(pxdata+i));
   TI=0;
   SBUF=*(pxdata+i);
   while(!TI);

 }
// ES=1;
} 
//--------------------
//////////////////////////////////////////////////////////////////
void Uart0_print(char *p)
  {
    // ES=0;      //disabe uart0 interrupt;
     TI=1;
     while(*p)
	 {
         if(*p==10)
              {
	        	TI=0;
                SBUF=0x0d;
               while(!TI);
	      }
          TI=0;
          SBUF=(*p);
          ++p;
          while(!TI);
      
	  }
//     while(!TI);
	 TI=0;
    // ES=1;
  }
//--------------------------------------------------------*/