mdt.c

这是一个C51做的GPS终端 CPU：89S52 语言： Keil C51 主要是RS232通信

	   time[7]=time[6];
	   time[6]=time[5];	   
       time[8]='\0';
	   time[5]=':';
	   time[2]=':';
       Print_Line(" ");
	   Print_Line(time);
	}
	else if(time[2]=='1')
	{
       Print_Line(" "); 
	   Print_Line("时间未知");
	}
	if(NewMail_Flag==0)
	{
		Disp_StandMessage();
	}
	Line_Tab=Bak_LineTab;
}
//============================================================
//屏保程序
//============================================================
void Stand_By()
{  
    if(Stand_Flag==1)
	{
		    CurKey_Flag=0;
			StandBy_Flag=1;
			Disp_Stand();
//			StandBy_Flag=0;
			Stand_Flag=0;
	}
	if((CurKey_Flag==1)&&(S2_Flag==1))
	    Resume_StandBy();
	if((CurKey_Flag==1)&&(StandBy_Flag==1))
	{
	    Resume_StandBy();
		StandBy_Flag=0;
	}
	if(NewMail_Flag==1)
		Disp_NewMail();         
	if((OverSpeed_Flag==1)&&(CurKey_Flag==1))
	{
		HoldOver_Flag=0;
	}
    Disp_OverSpeed();
}


//============================================================
//滚动键改变液晶显示内容
//============================================================
void Roll_Screen()
{
	if(Roll_En){
		if(Key_Type==0) Reverse_Line(Active_Line);
		if(Roll_Arrow){
			if(Key_Type) {
				if((Total_Line-Start_Line-2)>7){
					 ++Start_Line;
					 Disp_Title();
					 Disp_Message();
		 		}
			}
			else{
				if(Active_Line<(Total_Line-2)) ++Active_Line;
				if((Total_Line-Start_Line)>7){
					if(Active_Line>Start_Line+7){
					 ++Start_Line;
					}
				}
				Reverse_Line(Active_Line);
				Disp_Title();
				Disp_Message();
			}
		}
		
		else{
			if(Key_Type) {
				if(Start_Line>0) {
					--Start_Line;
					Disp_Title();
					Disp_Message();
				}
			}
			else{
				if(Active_Line>0) --Active_Line;
				if(Active_Line<Start_Line) --Start_Line;
				Reverse_Line(Active_Line);
				Disp_Title();
				Disp_Message();
			}
		}
}

return;
}
void Resume_StandBy()
{
	Clr_Message_Buff();
	Store_Vram();
	Disp_Title();
	Disp_Message();
	CurKey_Flag=0;
	S2_Flag=0;
return;
}

//============================================================
//液晶显示状态栏内容
//============================================================
void Disp_Status()
{
unsigned int i=0,j=0;

		while(i<16){
			Write_S6b0741_Reg(SET_PAGE+i);
			Write_S6b0741_Reg(SET_COLUMN_MSB);
			Write_S6b0741_Reg(SET_COLUMN_LSB);
			for(j=0;j<12;++j){
				Write_S6b0741_Data(Buff_Page[i].Column[j]);
			}
			++i;
		}
return;
}

//============================================================
//存储状态显示内容
//============================================================
void Store_Status()
{
unsigned char ch,i;

	Line_Tab=0;
	while(Read_Rx()!='^');
    while(Read_Rx()!='I');
	ch=Read_Rx();
    switch(ch){
        case 'C':
		   ch=Read_Rx();

		   Set_XY(0,0);
		   Load_Symbol(ant);
		   V_Write_HZ();

		   switch(ch){
		       case '0':{Set_XY(0,0);Print_String(blank,5);}break;
			   case '1':{Set_XY(2,0);Load_Symbol(ant0);V_Write_HZ();}break;
			   case '2':{Set_XY(2,0);Load_Symbol(ant1);V_Write_HZ();}break;
			   case '3':{Set_XY(2,0);Load_Symbol(ant2);V_Write_HZ();}break;
			   case '4':{Set_XY(2,0);Load_Symbol(ant3);V_Write_HZ();}break;
			   case '5':{Set_XY(2,0);Load_Symbol(ant4);V_Write_HZ();}break;
			   default: {Set_XY(2,0);Load_Symbol(ant4);V_Write_HZ();}break;
		   }
		   break;
		case 'R':
		    ch=Read_Rx();
			Set_XY(6,0); Print_String(blank,5);
			switch(ch){
		        case '0':break;
			    case '1':
					if(IP_En){
						Set_XY(6,0); Load_Symbol(cdma);V_Write_HZ();
						Set_XY(8,0); Load_Symbol(tcp);V_Write_HZ();
					}
					else{
						Set_XY(6,0); Load_Symbol(cdma);V_Write_HZ();
                    }
					break;
			    default:
				 break;
			}break;
		case 'D':
		    ch=Read_Rx();
			switch(ch){
				case '0': IP_En=0; break;
				case '1': IP_En=1; break;
				default: IP_En=0; break;
			}break;
		case 'G':
	        ch=Read_Rx();
			Set_XY(12,0);
			ch=Read_Rx();
			switch(ch){
	    	    case '0':{for(i=0;i<4;i++)Print_String(blank,2);}break;
		    	default: {
					for(i=0;i<4;i++)Print_String(blank,2);
					Set_XY(12,0);
					ch=ch-'0';
					if(ch>4) ch=4;
					for(i=0;i<ch;i++){
				    	Load_Symbol(star);
						V_Write_HZ();
						}
				}break;
			}break;
    }
    while(Read_Rx()!='}');

return;
}

//============================================================
//解释接收数据
//============================================================
void Explain()
{
unsigned char ch;

while(Read_Rx()!='{');
ch=Read_Rx();
if(ch=='S')
{ 
	Store_Message(); 
}
else if(ch=='C') {Store_Status(); Disp_Status();}
else while(Read_Rx()!='}');
return;
}


//==================================================================
//				串口初始化
//==================================================================
void Init_Rs232()
{
	SCON = 0x50; //SCON: serail mode 1, 8-bit UART, enable ucvr
	TMOD |= 0x20; //TMOD: timer 1, mode 2, 8-bit reload
	PCON |= 0x80; //SMOD=1;
	TH1 = 0x100-BT; //Baud:115200/BT BT>=1(INTGREDE) fosc=22.1184MHz
	IE |= 0x90; //Enable Serial Interrupt
	TR1 = 1; // timer 1 run
	TI=0;
   Tx_Done=0;
}



//============================================================================
//			串口接收中断子程
//============================================================================
void Serial () interrupt 4  using 1
{  
unsigned char ch;

    if(RI){
		ch=SBUF;
		RI=0;
        if(En_Lcd_Flag) Off_Lcd();
		if(ch=='{')	RS232_Flag=1;
 		if(RS232_Flag) {
			Recieve_Buff[P_Rx]=ch;
			++P_Rx;
		}
		if(ch=='}') RS232_Flag=0;
        if(En_Lcd_Flag) En_Lcd();
	}
    else{
        if(TI&Tx_Done){
            TI=0;
            SBUF=Transfer[T_Tx];
            if(++T_Tx==Tx_Length) Tx_Done=0;
        }
        else
            TI=0;
	}
}

/*
//============================================================
//CPU看门狗计数器+待机时间计数器
//============================================================
void Init_Time0()
{
   TH0=-221184/12/256;  
   TL0=-221184/12%256;
   IE|=0x02;
   TF0=0;
   TR0=1;
   	WDTRST=0x1E;
	WDTRST=0xE1;

}

//============================================================
//CPU看门狗+待机时间中断
//============================================================
void IntTime0 () interrupt 1
{
   TH0=-221184/12/256;  
   TL0=-221184/12%256;
	WDTRST=0x1E;
	WDTRST=0xE1;
    if(Wait_Time<Stand_Time) ++Wait_Time;
	else{ 
		if(Stand_Count<300) ++Stand_Count;
		}
}
*/

//==================================================================
//				键盘扫描程序
//==================================================================
void Key_Scan()
{
unsigned int key_count=0;

     Key_Scroll_Up=1;
     Key_Scroll_Down=1;
     Key_Menu=1;
	 Key_Enter=1;
     Key_Cancel=1;
     Key_Forward=1;
     Key_Back=1;
     Key_Call=1;

	if(!Key_Enter){
		while(!Key_Enter);
	    while(Tx_Done);
	    if(Key_Type){
	        Copy_Key(s6_enter,Transfer);
	        Int_Tx(12);   
	    }
	    else{ 
		    Copy_Key(s1_enter,Transfer);
	        Transfer[12]=Active_Line+0x30; 
		    Int_Tx(14);
	    }
 		CurKey_Flag=1;
	return;
	}

	if(!Key_Menu){
		while(!Key_Menu);
	    while(Tx_Done);    
	    if(Key_Type) Copy_Key(s6_menu,Transfer);
	    else Copy_Key(s1_menu,Transfer);
		Int_Tx(11);
		CurKey_Flag=1;
	return;
	}

	if(!Key_Cancel){
		while(!Key_Cancel);
	    while(Tx_Done);    
	    if(Key_Type) Copy_Key(s6_cancel,Transfer);
	    else Copy_Key(s1_cancel,Transfer);
		Int_Tx(11);
		CurKey_Flag=1;
	return;
	}

	if(!Key_Forward){
		while(!Key_Forward);
	    while(Tx_Done);
	    if(Key_Type){
	        Copy_Key(s6_forward,Transfer);
	 		Int_Tx(11);
	    }
	    else{
	        Copy_Key(s1_forward,Transfer);
	        Transfer[11]=Active_Line+0x30; 
		    Int_Tx(13);
	    }
		CurKey_Flag=1;
	return;
	}

	if(!Key_Back){
		while(!Key_Back);
	    while(Tx_Done); 
	    if(Key_Type){
	        Copy_Key(s6_back,Transfer);
	        Int_Tx(11);
	    }
	    else{
	        Copy_Key(s1_back,Transfer);
	        Transfer[12]=Active_Line+0x30; 
		    Int_Tx(14);
	    }
		CurKey_Flag=1;
	return;
	}

	if(!Key_Call){
		while(!Key_Call);
        while(Tx_Done);
        if(Key_Type){
            Copy_Key(s6_call,Transfer);
            Int_Tx(11);
        }
        else{
            Copy_Key(s1_call,Transfer);
            Transfer[11]=Active_Line+0x30; 
 		    Int_Tx(13);
        }
		CurKey_Flag=1;
	return;
    }

  	if((Key_Scroll_Down==0)&&(Key_Scroll_Up==0)){
	 	while(Key_Scroll_Down==Key_Scroll_Up){
			Delay(1); ++key_count;
			if(key_count>1000) return;
		}
		if(Key_Scroll_Up) Roll_Arrow=1;
		else Roll_Arrow=0;
		if(CurKey_Flag==0)
		{
			CurKey_Flag=1;
			return;
		}
		else
			Roll_Screen();	
		return;
	}
   	return;
}


//============================================================
//刷新待机图片局部内容
//============================================================
void Print_Box(unsigned char height,unsigned char width,unsigned char offset,unsigned char  *pic)
{
unsigned char i=0,n=0,bb;
    bb=8-width/2;
	while(n<height){
		while(i<width){
			Buff_Page[bb+i].Column[Stand_Line+offset+14+n]|=pic[n*width+i];            
			++i;
		}
		++n;i=0;
	}
}

//
void Init_State(void)
{
   heading[1]='-';
   heading[2]='1';
   heading[3]='\0';
   speed[1]='-';
   speed[2]='1';
   speed[3]='\0';
   date[1]='-';
   date[2]='1';
   date[3]='\0';
   time[1]='-';
   time[2]='1';
   time[3]='\0';
   newmail[1]='0';
   newmail[2]='\0';
   pretime=time[4]=0;
}
//==========================================================
//						主程序
//==========================================================
void main()
{
    Init_Rs232();
//    Init_Time0();
	Init_State();
    IP=0x10;


	S6b0741_Init();
	Write_S6b0741_Reg(DISP_ON);	
	Clear_Screen(0x00);
   
	P1=0xff;
    RS232_Flag=0;
	Clr_Mess_Buff();
	Clr_Status_Buff();
	Total_Line=10;

	Clr_Message_Buff();
	Set_XY(5,3);
	Print_Line("万向航星");
	Set_XY(0,7);
	Print_Line("MDT 2.0");

    Set_XY(0,9);
    Print_SN();

    Disp_Message();    
	Total_Line=Mess_Line;
	Clr_Message_Buff();
	Total_Line=0;
	Active_Line=0;
    Roll_En=0;
	while(1){
    	Explain();
    }

}