8 bit lcd library function for hitech-c

8 bit lcd library function for hitech-c

#ifndef D0
#define D0 RB0
#define D1 RB1
#define D2 RB2
#define D3 RB3
#endif



void Lcd8_Port(char a)
{
if(a & 1)
D0 = 1;
else
D0 = 0;

if(a & 2)
D1 = 1;
else
D1 = 0;

if(a & 4)
D2 = 1;
else
D2 = 0;

if(a & 8)
D3 = 1;
else
D3 = 0;

if(a & 16)
D4 = 1;
else
D4 = 0;

if(a & 32)
D5 = 1;
else
D5 = 0;

if(a & 64)
D6 = 1;
else
D6 = 0;

if(a & 128)
D7 = 1;
else
D7 = 0;
}
void Lcd8_Cmd(char a)
{
  RS = 0;
  RW=  0;         // => RS = 0
  Lcd8_Port(a);             //Data transfer
  EN  = 1;             // => E = 1
  __delay_ms(5);
  EN  = 0;             // => E = 0
}

Lcd8_Clear()
{
 Lcd8_Cmd(1);
}

void Lcd8_Set_Cursor(char a, char b)
{
if(a == 1)
 Lcd8_Cmd(0x80 + b);
else if(a == 2)
Lcd8_Cmd(0xC0 + b);
}

void Lcd8_Init()
{
Lcd8_Port(0x00);
RS = 0;
RW=0;
__delay_ms(25);

  Lcd8_Cmd(0x30);
__delay_ms(5);
  Lcd8_Cmd(0x30);
__delay_ms(15);
  Lcd8_Cmd(0x30);

  Lcd8_Cmd(0x38);    //function set
  Lcd8_Cmd(0x0C);    //display on,cursor off,blink off
  Lcd8_Cmd(0x01);    //clear display
  Lcd8_Cmd(0x06);    //entry mode, set increment
}

void Lcd8_Write_Char(char a)
{
   RS = 1;             // => RS = 1
RW=0;
   Lcd8_Port(a);             //Data transfer
   EN  = 1;             // => E = 1
  __delay_ms(4);
   EN  = 0;             // => E = 04
}

void Lcd8_Write_String(char *a)
{
int i;
for(i=0;a[i]!='\0';i++)
Lcd8_Write_Char(a[i]);
}

void Lcd8_Shift_Right()
{
Lcd8_Cmd(0x1C);
}

void Lcd8_Shift_Left()
{
Lcd8_Cmd(0x18);
}