#include "lcd.h"
#include "delay.h"
#include <REGX52.H>

unsigned char code cy[]={145,145,149,142,132,132,132,132/* //Cy//*/};
unsigned char code up[]={132,142,159,142,142,142,132,128/* //up// */};
unsigned char code down[]={128,132,142,142,142,159,142,132/* //down// */};
unsigned char code block[]={159,159,159,159,159,159,159,159/* //block// */};

void lcd_reset()
{
lcd_port = 0xFF;
delayms(20);
lcd_port = 0x03+LCD_EN;
lcd_port = 0x03;
delayms(10);
lcd_port = 0x03+LCD_EN;
lcd_port = 0x03;
delayms(1);
lcd_port = 0x03+LCD_EN;
lcd_port = 0x03;
delayms(1);
lcd_port = 0x02+LCD_EN;
lcd_port = 0x02;
delayms(1);
}
void lcd_init ()
{
unsigned char i;
lcd_reset();
lcd_cmd(LCD_SETFUNCTION); // 4-bit mode - 1 line - 5x7 font.
lcd_cmd(LCD_SETVISIBLE+0x04); // Display no cursor - no blink.
lcd_cmd(LCD_SETMODE+0x02); // Automatic Increment - No Display shift.
lcd_cmd(LCD_SETCGADDR);
for(i=0;i<8;i++)
lcd_data(cy[i]);
for(i=0;i<8;i++)
lcd_data(up[i]);
for(i=0;i<8;i++)
lcd_data(down[i]);
for(i=0;i<8;i++)
lcd_data(block[i]);
lcd_cmd(LCD_SETDDADDR); // Address DDRAM with 0 offset 80h.
}

void lcd_cmd (char cmd)
{
lcd_port = ((cmd >> 4) & 0x0F)|EN;
lcd_port = ((cmd >> 4) & 0x0F);

lcd_port = (cmd & 0x0F)|EN;
lcd_port = (cmd & 0x0F);

delay(200);
delay(200);
}

void lcd_data (unsigned char dat)
{
lcd_port = (((dat >> 4) & 0x0F)|EN|RS);
lcd_port = (((dat >> 4) & 0x0F)|RS);

lcd_port = ((dat & 0x0F)|EN|RS);
lcd_port = ((dat & 0x0F)|RS);

delay(200);
delay(200);
}

void lcd_str (unsigned char *str)
{
while(*str){
lcd_data(*str++);
}
}