/
hex-bcd.c
143 lines (109 loc) · 1.46 KB
/
hex-bcd.c
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#include<reg51.h>
sbit RS = P3^4;
sbit RW = P3^5;
sbit EN = P3^6;
void delay(unsigned int del)
{
unsigned int i;
for(i=0;i<del;i++);
}
void lcd_cmd(unsigned char val)
{
P0 = val;
RS = 0;
RW = 0;
EN = 1;
delay(50);
EN = 0;
delay(250);
}
void lcd_data(unsigned char val)
{
P0 = val;
RS = 1;
RW = 0;
EN = 1;
delay(50);
EN = 0;
delay(250);
}
void show_hex(unsigned char k)
{
int i=k%16;
int j=k/16;
lcd_data('0');
lcd_data('x');
if(j<10)
lcd_data((0x30)+j);
if(j>=10)
{
switch(j)
{
case 10:
lcd_data('a');
break;
case 11:
lcd_data('b');
break;
case 12:
lcd_data('c');
break;
case 13:
lcd_data('d');
break;
case 14:
lcd_data('e');
break;
case 15:
lcd_data('f');
break;
}}
if(i<10)
lcd_data((0x30)+i);
else{
switch(i)
{
case 10:
lcd_data('a');
break;
case 11:
lcd_data('b');
break;
case 12:
lcd_data('c');
break;
case 13:
lcd_data('d');
break;
case 14:
lcd_data('e');
break;
case 15:
lcd_data('f');
break;
}}}
void show_number(int k)
{
int d1,d2,d3;
d1=k%10;
k=k/10;
d2=k%10;
k=k/10;
d3=k%10 ;
lcd_data((0x30)+d3);
lcd_data((0x30)+d2);
lcd_data((0x30)+d1);
}
void main()
{
unsigned char a=0x45 ;
lcd_cmd(0x38); //to enable LCD
lcd_cmd(0x0E); //Display on, blinking cursor
lcd_cmd(0x01); //clears display screen
lcd_cmd(0x06); //enables forward incrementing
lcd_cmd(0x80); //displays at first line first position
show_hex(a);
lcd_data('-');
lcd_data('>');
show_number(a);
}