glcd.c

PIC LCD Module 控制, C code.

/*******************************************************************
********************************************************************
*****                                                          *****
*****             PIC16877 with Graph LCD                      *****
*****                                                          *****
********************************************************************
*******************************************************************/


//#include <16F877.h>

#define WR  0x01; //PORTC.0;
#define RD  0x02; //PORTC.1; 
#define CE  0x04; //PORTC.2;
#define CD  0x08; //PORTC.3;
#define RST 0x10; //PORTC.4;
#define FS  0x20; //PORTC.5;
#define R1  0x01; //PORTB.0;
#define Y1  0x02; //PORTB.1;
#define G1  0x04; //PORTB.2;
#define R2  0x08; //PORTB.3;
#define Y2  0x10; //PORTB.4;
#define G2  0x20; //PORTB.5;


#define MaxColumn  128;
#define Column  16;
#define MaxRow  64;

/*enum {};   // Timer identifiers 
#define FreqOsc 1000000   // Oscillator frequenzy
#define FreqTimer 100      // Timer frequency, 1000 or 100 Hz
#define TimerType uns16   // uns8, uns16 or uns24
#define NoOfTimers 4      // 1 .. 8
#define DELAY_TYPE 1
//#include "delay.h" */

char low8bit,high8bit,ShowGraphic,ShowAdd,GrAdd;
char set1,set2,Value,State1,State2;
char TimerA, TimerB,tCount,ticks;
bit Erase,TimeUp;

#include "int16CXX.H"
#pragma origin 4

interrupt int_server(void)
{
  int_save_registers   // W,status and PCLATH
  if (T0IF)
    {
	  if (TimerB != 0)
		TimerB --;
      tCount++;
      if (tCount <= 6)
        TMR0 = 20 ;
      else 
        {
   	      TimeUp = 1 ;
          TMR0 = 40 ;
          tCount = 0 ;
	      if (TimerA != 0)
		    TimerA --;
        }
      T0IF = 0 ;
   }
  int_restore_registers  // w,status and PCLATH
}

void writecmd(char data)
{ 
  PORTC |= CD ;
  PORTC &= ~CE ;
  PORTC &= ~WR ;
  PORTC |= RD ;
  PORTD = data ;
  PORTC |= CE ;
  PORTC |= WR ;
}

void writedata(char data)
{ 
  PORTC &= ~CD ;
  PORTC &= ~CE ;
  PORTC &= ~WR ;
  PORTC |= RD ;
  PORTD = data ;
  PORTC |= CE ;
  PORTC |= WR ;
}

void readstatus(char data)
{ 
  PORTC |= CD ;
  PORTC &= ~CE ;
  PORTC &= ~RD ;
  PORTC |= WR ;
  PORTD = data ;
  PORTC |= CE ;
  PORTC |= RD ;
}

void readdata(char data)
{ 
  PORTC &= ~CD ;
  PORTC &= ~CE ;
  PORTC &= ~RD ;
  PORTC |= WR ;
  PORTD = data ;
  PORTC |= CE ;
  PORTC |= RD ;
}

void writedata2()
{ 
  writedata(low8bit);
  writedata(high8bit);
}

void initlcd()
{
  low8bit = 0; 
  high8bit = 0;
  writedata2();
  writecmd(0x40);

  low8bit = 0; 
  high8bit = 0x40;
  writedata2();
  writecmd(0x42);

  low8bit = Column; 
  high8bit = 0;
  writedata2();
  writecmd(0x41);

  low8bit = Column; 
  high8bit = 0;
  writedata2();
  writecmd(0x43);
  writecmd(0x80);	//0x80 External CG RAM	mode, OR
/*SETMODE		; ** SET MODE - MANY OPTIONS, see EPE text **
	  		    ; movlw %10000000 ;	0x80 External CG RAM	mode, OR
			    ; movlw %10000011 ;	0x83 External CG RAM	mode, AND
			    ; movlw %10000001 ;	0x81 External CG RAM	mode, XOR
			    ; movlw %10000100 ;	0x84 text attribute mode
	  CALL SENDCMD	    ; send command	*/  
}

static const char show[16] = {16,17,18,19,20,21,22,23,24,
								25,26,27,28,29,30,31};
static const char st[32] = {7,192,15,224,7,64,3,128,
							15,224,23,208,39,200,23,208,
							15,224,7,192,15,224,12,96,
							12,96,12,96,12,96,12,96};
static const char w1[32] = {7,192,15,240,7,224,3,128,
							15,224,23,208,39,206,39,192,
							39,192,39,192,7,192,12,96,
							12,48,24,48,24,96,28,112};
static const char w2[32] = {7,192,15,240,7,224,3,128,
							15,224,23,208,39,208,71,200,
							135,196,7,192,12,192,12,192,
							12,192,124,192,120,192,64,224};
static const char w3[32] = {7,192,15,240,7,224,3,128,
							63,192,39,224,39,224,39,208,
							7,200,7,192,6,96,6,48,
							6,24,12,24,12,24,14,28};

void Show(void)
{  char tmp1,tmp2,tmp3,tmp4;
   writecmd(0x9c);   //graphic enable

   //if (Erase)
	 //writecmd(0x83);  //0x83 External CG RAM	mode, and  
  // else
	 writecmd(0x80);  //0x83 External CG RAM	mode, or

   tmp4 = GrAdd ;
   low8bit = tmp4; 
   high8bit = 0x40;
   writedata2();
   writecmd(0x24);
   writecmd(0xb0);
   tmp3 = 0;
   tmp1 = 16 ;
   do {
        tmp2 = 2 ;
        do {
			switch (ShowGraphic){			
			 case 0 : 
				writedata(st[tmp3]);
				break;
			 case 1 : 
				writedata(w1[tmp3]);
				break;
			 case 2 : 
				writedata(w2[tmp3]);
				break;
			 case 3 : 
				writedata(w3[tmp3]);
				break;
	        }
			tmp3 ++ ;
			} while(-- tmp2);
		tmp4 = 16 + tmp4 ;
        writecmd(0xb2);
        low8bit = tmp4; 
  	    high8bit = 0x40; 
  		writedata2();
  		writecmd(0x24);
   	    writecmd(0xb0);
      } while(-- tmp1);  
   writecmd(0xb2);
}

void getset(void)
{
 TRISD = 0x0f;
 PORTC |= CE ; 
 PORTD = 0x1f;
 set1 = PORTD;
 set1 = PORTD;
 set1 &= 0x0f;

 PORTD = 0x2f;
 set2 = PORTD;
 set2 = PORTD;
 set2 &= 0x0f;

 TRISD = 0; 
 PORTD = 0;
}

void ShowValue(void)
{  char tmp1,tmp2,tmp3,tmp4;
   tmp1=Value%10;
   writecmd(0x9c);
   tmp2=Value/10;
   low8bit = ShowAdd ; // 2 and 10 add 
   high8bit = 0;
   writedata2();
   writecmd(0x24);
   writecmd(0xb0);
   if (tmp2==0)
       writedata(0);
     else 
       writedata(tmp2+16);
   writedata(tmp1+16);
   writecmd(0xb2); 
}

void Fsm2(void)
{
  switch (State2)
  {
    case 0:
	  if (TimerB==0)
		{

          ShowGraphic = 0 ;
          Show();
		  State2 = 1 ;
   		  TimerB=1;
       }
      break;
    case 1:
	  if (TimerB==0)
		{
          ShowGraphic = 1 ;
          Show();
		  State2 = 2 ;
   		  TimerB=1;
        }
	  break;
    case 2:
	  if (TimerB==0)
		{
          ShowGraphic = 2 ;
          Show();
		  State2 = 0 ;
   		  TimerB=1;
        }
	  break;
  }
}

void Fsm1(void)
{
  switch (State1)
  {
    case 0:
	  if (TimerA==0)
		{
   		  PORTB |= R2 ;
  		  PORTB &= ~R1 ;
   		  PORTB &= ~Y1 ;
   		  PORTB &= ~Y2 ;
   		  PORTB |= G1 ;
   		  PORTB &= ~G2 ;

   GrAdd = 0x00;
   ShowGraphic = 0 ;
   Show();
   GrAdd = 0x08;
   Fsm2();
   getset();
      Value = (set2*5) ;
      ShowAdd = 2 ;
      ShowValue();    
		  State1 = 1 ;
   		  TimerA=(set1*5);
        }
	  break;
    case 1:
      Fsm2(); 
      Value = TimerA ;
      ShowAdd = 10 ;
      ShowValue();     
	  if (TimerA==0)
		{
   		  PORTB |= Y1 ;
  		  PORTB &= ~R2 ;
   		  PORTB &= ~G1 ;
   		  PORTB &= ~Y2 ;
   		  PORTB |= R2 ;
   		  PORTB &= ~G2 ;
   GrAdd = 0x08;
   ShowGraphic = 0 ;
   Show();
		  State1 = 2 ;
   		  TimerA=15;
        }
	  break;
    case 2:
	  if (TimerA==0)
		{
   		  PORTB |= R1 ;
  		  PORTB &= ~G1 ;
   		  PORTB &= ~Y1 ;
   		  PORTB &= ~Y2 ;
   		  PORTB |= R2 ;
   		  PORTB &= ~G2 ;
		  State1 = 3 ;
   		  TimerA=5;
        }
	  break;
    case 3:
	  if (TimerA==0)
		{
   		  PORTB |= R1 ;
  		  PORTB &= ~R2 ;
   		  PORTB &= ~Y1 ;
   		  PORTB &= ~Y2 ;
   		  PORTB |= G2 ;
   		  PORTB &= ~G1 ;
   GrAdd = 0x08;
   ShowGraphic = 0 ;
   Show();
   GrAdd = 0x00;
   Fsm2();
   getset();
      Value = (set1*5) ;
      ShowAdd = 10 ;
      ShowValue();    
		  State1 = 4 ;
   		  TimerA = (set2*5);
        }
	  break;
    case 4:
      Fsm2();
      Value = TimerA ;
      ShowAdd = 2 ;
      ShowValue();
	  if (TimerA==0)
		{
   		  PORTB |= R1 ;
  		  PORTB &= ~G1 ;
   		  PORTB &= ~Y1 ;
   		  PORTB &= ~G2 ;
   		  PORTB |= Y2 ;
   		  PORTB &= ~R2 ;
   GrAdd = 0x00;
   ShowGraphic = 0 ;
   Show();
		  State1 = 5 ;
   		  TimerA=15;
        }
	  break;
    case 5:
	  if (TimerA==0)
		{
   		  PORTB |= R1 ;
  		  PORTB &= ~G2 ;
   		  PORTB &= ~Y1 ;
   		  PORTB &= ~Y2 ;
   		  PORTB |= R2 ;
   		  PORTB &= ~G1 ;
		  State1 = 0 ;
   		  TimerA=5;
        }
	  break;
  }
}


void main()
// Program Control Function.
 { char tmp1,tmp2,tmp3,tmp4,tmp5;
   set1 = 3;
   set2 = 3;
   TRISC = 0;
   TRISB = 0;
   PORTB = 0;
   PORTC = 0;
   TRISD = 0; 
   PORTD = 0;
   PORTC &= ~RST ;
   PORTC |= RST ;
   PORTC &= ~FS ;

   OPTION = 4 ;
   ticks = 0 ;
   TimeUp = 0 ;
   tCount = 0 ;
   TMR0 = 0 ;
   initlcd();                             // Initialise the LCD Display 
   tmp5 = 16;
   Value = tmp5;
   TimerA=0;
   TimerB=0;
   State1 = 0;
   State2 = 0;

   T0IE = 1 ;
   GIE = 1 ;
   while(1)
  {

   //show text
   //writecmd(0x9c);

   /* SETDISPLAY		    ; ** DISPLAY MODE ** SOME OPTIONS:
	        ;  10010100'0x94 text on, graphic off, cursor & blink off
		    ; %10011100 0x9c text on, graphic on, cursor & blink off
		    ; %10011000 0x98 text off, graphic on, cursor & blink off
			; %10010000	0x90 display	off
		    ; %1001xx10	0x92 cursor on, blink off
		    ; %1001xx11	0x93 cursor on, blink on
		    ; %100101xx	0x94 text on, graphic off
		    ; %100110xx	0x98 text off, graphic on
		    ; %100111xx	0x9c text on, graphic on  */



   Fsm1();

   
   Fsm1();
 
   }      
}