#include <16F628A.h>

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES INTRC                    //Internal RC Osc
#FUSES NOPUT                    //No Power Up Timer
#FUSES NOPROTECT                //Code not protected from reading
#FUSES NOBROWNOUT               //No brownout reset
#FUSES NOMCLR                   //Master Clear pin used for I/O
#FUSES NOLVP                    //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOCPD                    //No EE protection

#use delay(clock=4000000)

#include "C:\mcu_projects\628_lcd\user_lcd.c"

#use rs232(baud=9600,parity=N,xmit=PIN_B7,rcv=PIN_B6,bits=8)

void main()
{
   char temp;
   setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
   setup_timer_1(T1_DISABLED);
   setup_timer_2(T2_DISABLED,0,1);
   setup_comparator(NC_NC_NC_NC);
   setup_vref(FALSE);
   LCD_Init();
   // delay_ms(500);
   printf(LCD_PutChar,"TEST TEST TEST");
   do{
      temp=getc();
      putc(temp);
      if(temp=='D'){
      LCD_PutCmd ( 0x01 );    // clear display
      LCD_PutCmd ( 0x80 );
      goto end;
       }
   
     if(temp=='1'){
        LCD_PutCmd ( 0x80 );
        goto end;
      }
      if(temp=='2'){
        LCD_PutCmd ( 0xC0 );
        goto end;
      }
   
     LCD_PutChar(temp);
     end:
   }while(1);
}

#define LCD_D4          PIN_A3
#define LCD_D5          PIN_A2
#define LCD_D6          PIN_A1
#define LCD_D7          PIN_A0

#define LCD_EN          PIN_B1
#define LCD_RS          PIN_B3

#define LINE_1          0x00
#define LINE_2          0x40
#define CLEAR_DISP      0x01

#separate void LCD_Init ( void );
#separate void LCD_SetPosition ( unsigned int cX );
#separate void LCD_PutChar ( unsigned int cX );
#separate void LCD_PutCmd ( unsigned int cX );
#separate void LCD_PulseEnable ( void );
#separate void LCD_SetData ( unsigned int cX );

#use standard_io ( A )
#use standard_io ( B )



#separate void LCD_Init ( void )
    {
    LCD_SetData ( 0x00 );
    delay_ms ( 200 );       
    output_low ( LCD_RS );
    LCD_SetData ( 0x03 );   
    LCD_PulseEnable();
    LCD_PulseEnable();
    LCD_PulseEnable();
    LCD_SetData ( 0x02 ); 
    LCD_PulseEnable();     
    LCD_PutCmd ( 0x2C );   
    LCD_PutCmd ( 0x0C ); 
    LCD_PutCmd ( 0x01 ); 
    LCD_PutCmd ( 0x06 ); 
    }

#separate void LCD_SetPosition ( unsigned int cX )
    {
    LCD_SetData ( swap ( cX ) | 0x08 );
    LCD_PulseEnable();
    LCD_SetData ( swap ( cX ) );
    LCD_PulseEnable();
    }

#separate void LCD_PutChar ( unsigned int cX )
    {
        output_high ( LCD_RS );
        LCD_SetData ( swap ( cX ) );
        LCD_PulseEnable();
        LCD_SetData ( swap ( cX ) );     
        LCD_PulseEnable();
        output_low ( LCD_RS );
    }

#separate void LCD_PutCmd ( unsigned int cX )
    {
    LCD_SetData ( swap ( cX ) );   
    LCD_PulseEnable();
    LCD_SetData ( swap ( cX ) );     
    LCD_PulseEnable();
    }

#separate void LCD_PulseEnable ( void )
    {
    output_high ( LCD_EN );
    delay_us ( 3 );       
    output_low ( LCD_EN );
    delay_ms ( 3 );
    }

#separate void LCD_SetData ( unsigned int cX )
    {
    output_bit ( LCD_D4, cX & 0x01 );
    output_bit ( LCD_D5, cX & 0x02 );
    output_bit ( LCD_D6, cX & 0x04 );
    output_bit ( LCD_D7, cX & 0x08 );
    }