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#include<reg51.h>
#include<intrins.h>
#define data P1
sbit S1=P3^0;
sbit S2=P3^1;
sbit S3=P3^2;
sbit motor=P3^3;
sbit S4=P3^4;
sbit RS=P2^0;
sbit RW=P2^1;
sbit E=P2^2;
sbit A1=P0^0;
sbit B1=P0^1;
sbit C1=P0^2;
sbit D1=P0^3;
void ms_delay(unsigned int a)
{
unsigned int i,j;
for(i=0;i<a;i++)
{
for(j=0;j<70;j++)
{
_nop_();
}
}
}
void sec_delay(unsigned int a)
{
unsigned int i,j;
for(i=0;i<a;i++)
{
for(j=0;j<1000;j++)
{
ms_delay(1);
}
}
}
void ibit_left()
{
unsigned char i,a;
while(1);
{
if(S1==0)
{
a=0xfe;
for(i=0;i<8;i++)
{
P1=a;
a=a<<1;
a=a+0x01;
ms_delay(500);
}
}
}
}
void right_shift()
{
unsigned char i,a;
while(1);
{
if(S2==0)
{
a=0xfe;
for(i=0;i<8;i++)
{
P1=a;
a=a>>1;
ms_delay(500);
}
}
}
}
void ibit_right()
{
unsigned char i,a;
while(1);
{
if(S3==0)
{
a=0xfe;
for(i=0;i<8;i++)
{
P1=a;
a=a>>1;
a=a+0x80;
ms_delay(500);
}
}
}
}
void even_segments()
{
unsigned char i,a[10]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x98};
while(1);
{
if(S1==0)
{
for(i=0;i<=9;i++)
{
if(i%2==0)
P2=a;
ms_delay(500);
}
}
}
}
void odd_segments()
{
unsigned char i,a[10]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x98};
while(1);
{
if(S2==0)
{
for(i=0;i<=9;i++)
{
if(i%2==1)
P2=a;
ms_delay(500);
}
}
}
}
void numbers()
{
unsigned char i,a[10]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x98};
while(1);
{
if(S3==0)
{
for(i=0;i<=9;i++)
{
P2=a;
ms_delay(500);
}
}
}
}
void lcd_cmd()
{
data=ACC;
RS=0;
RW=0;
E=1;
ms_delay(10);
E=0;
}
void lcd_data()
{
data=ACC;
RS=1;
RW=0;
E=1;
ms_delay(10);
E=0;
}
void lcd_initialize()
{
ACC=0x38;
lcd_cmd();
ACC=0x38;
lcd_cmd();
ACC=0x38;
lcd_cmd();
ACC=0x06;
lcd_cmd();
ACC=0x0C;
lcd_cmd();
}
void lcd_puts(unsigned char *a)
{
while(*a!=’ ’)
{
ACC=*a;
lcd_data();
a++;
}
}
void PWM(unsigned char Ton)
{
motor=0;
ms_delay(Ton);
motor=1;
ms_delay(100-Ton);
}
void clkwise()
{
unsigned char i;
for(i=0;i<=5;i++)
{
A1=0;
B1=C1=D1=1;
ms_delay(250);
B1=0;
A1=C1=D1=1;
ms_delay(250);
C1=0;
A1=B1=D1=1;
ms_delay(250);
D1=0;
A1=B1=C1=1;
ms_delay(250);
}
}
void anticlkwise()
{
unsigned char i;
for(i=0;i<=5;i++)
{
D1=0;
A1=B1=C1=1;
ms_delay(250);
C1=0;
A1=B1=D1=1;
ms_delay(250);
B1=0;
A1=C1=D1=1;
ms_delay(250);
A1=0;
B1=C1=D1=1;
ms_delay(250);
}
}
void main()
{
lcd_initialize();
while(1);
{
if(S1==0)
{
ACC=0x80;
lcd_cmd();
lcd_puts(“1BIT LEFTSHIFT”);
ibit_left();
}
else if(S2==0)
{
ACC=0x01;
lcd_cmd();
ACC=0x80;
lcd_cmd();
lcd_puts(“RIGHT SHIFT”);
right_shift();
}
else if(S3==0)
{
ACC=0x01;
lcd_cmd();
ACC=0x80;
lcd_cmd();
lcd_puts(“1BIT RIGHTSHIFT”);
ibit_right();
}
while(1);
{
if(S1==0)
{
ACC=0x80;
lcd_cmd();
lcd_puts(“EVEN NUMBERS”);
even_segments();
}
else if(S2==0)
{
ACC=0x01;
lcd_cmd();
ACC=0x80;
lcd_cmd();
lcd_puts(“ODD NUMBERS”);
odd_segments();
}
else if(S3==0)
{
ACC=0x01;
lcd_cmd();
ACC=0x80;
lcd_cmd();
lcd_puts(“DECIMALS”);
numbers();
}
}
while(1);
{
motor=0;
sec_delay(10);
motor=1;
sec_delay(5);
PWM(30);
}
while(1)
{
if(S1==0)
{
ACC=0x80;
lcd_cmd();
lcd_puts(“MOTOR CLOCKWISE”);
clkwise();
}
else if(S2==0)
{
ACC=0x01;
lcd_cmd();
ACC=0x80;
lcd_cmd();
lcd_puts(“MOTOR ANTICLOCKWISE”);
anticlkwise();
}
}
}
}