lcd_disp.h

CAN protocol implementation program

void delay(void);
const unsigned int LCD_RS=0X01000000;
const unsigned int LCD_EN=0X02000000;
void lcd_command( unsigned char p)
{
     unsigned int val;
	
    IOCLR1=LCD_RS;
    val=p& 0xf0; 
    IOSET0=val<<6;
    IOSET1=LCD_EN;
    delay();
    IOCLR1=LCD_EN;
    
	IOCLR0|=0X00003C00;
     
	 delay();
     val=p & 0x0f;
     IOSET0=val<<10;
     IOSET1=LCD_EN;
     delay();
     IOCLR1=LCD_EN;
 
     IOCLR0|=0X00003C00;
     delay();
}

void display(unsigned int data)
{
    unsigned int val1;
    IOSET1=LCD_RS;
    val1=data & 0xf0;
    IOSET0=val1<<6;
    IOSET1=LCD_EN;
    delay();
    IOCLR1=LCD_EN;
	IOCLR0|=0X00003C00;
 
    delay();

    val1=data & 0x0f;
    IOSET0=val1<<10;
    IOSET1=LCD_EN;
    delay();
    IOCLR1=LCD_EN;

    IOCLR0|=0X00003C00;
    
	delay();
	delay();
}
void delay(void)
{
    int i;
    for(i=0;i<50000;i++);
}






void lcd_initialise(void)
{
	 unsigned char comand[6]={0x20,0x28,0x01,0x06,0x0f,0x80};
     char i;
     IODIR0|=0X00003c00;
     IODIR1|=0X03FF0000;

   for(i=0;i<6;i++)
   lcd_command(comand[i]);
   
    /*sub functions*/


}