Question

Write a program in C that reads a 3-bit desired light pattern from the 3 input switches connected to pins P2.3-P2.5 and displays the pattern on the 8 LEDs (pins P1.0-P1.7) with some ""light playing"" options based on the input from other 3 switches (pins P2.0-P2.2).

Answer 1

Answer:

Check the explanation

Explanation:

#include<stdio.h>

main()

{ int k=1,p,l,i;

int p2[8],p1[8];

for(i=0;i<8;i++){

p1[i]=0;

p2[i]=0;

}

while(k==1)

{

printf("enter the pin inputs from p2.3-p2.5:");

scanf("%d%d%d",&p2[3],&p2[4],&p2[5]);

 

printf("Press Logic 0 for on and 1 for off on switch port p2.0\n");

scanf("%d",&l);

p1[3]=p2[3];

p1[4]=p2[4];

p1[5]=p2[5];

if(l==0)

{p=1;

for(i=0;i<8;i++)

printf("p1.%d : %d\n",i,p2[i]);

printf("\n press either 1 to continue or 0 to stop :");

scanf("%d",&p);

printf("\n");

while(p==1)

{ printf("enter the pin inputs from p2.3-p2.5:");

scanf("%d%d%d",&p2[3],&p2[4],&p2[5]);

p1[3]=p2[3];

p1[4]=p2[4];

p1[5]=p2[5];

for(i=0;i<8;i++)

printf("p1.%d : %d\n",i,p2[i]);

printf("\n press either 1 to continue or 0 to stop :");

scanf("%d",&p);

printf("\n");

}

}

else

{

printf("After Rotation of pattern :\n");

for(i=0;i<8;i++)

{ if(p2[i]==0)

printf("p1.%d : 1\n",i);

else

printf("p1.%d : 0\n",i);

}

}

printf("press 0 for on and 1 for off on switch port p2.1 :\n");

scanf("%d",&l);

if(l==0)

{ printf("\nLeft Rotation of pattern from read mode :\n");

printf("p1.0 : %d\n",p1[0]);

printf("p1.1 : %d\n",p1[5]);

printf("p1.2 : %d\n",p1[6]);

printf("p1.3 : %d\n",p1[3]);

printf("p1.4 : %d\n",p1[2]);

printf("p1.5 : %d\n",p1[1]);

printf("p1.7 : %d\n",p1[6]);

printf("p1.7 : %d\n",p1[7]);

}

else

{printf("\nRight rotation of pattern from read mode: \n");

printf("p1.0 : %d\n",p1[0]);

printf("p1.1 : %d\n",p1[1]);

printf("p1.2 : %d\n",p1[2]);

printf("p1.3 : %d\n",p1[7]);

printf("p1.4 : %d\n",p1[6]);

printf("p1.5 : %d\n",p1[5]);

printf("p1.7 : %d\n",p1[4]);

printf("p1.7 : %d\n",p1[3]);

}

printf("press 0 for on and 1 for off on switch port p2.2 :\n");

scanf("%d",&l);

if(l==0)

printf("Make Rotation fast\n");

else

printf("Make Rotation slow\n");

printf("Enter 1 to continue or 0 to exit:");

scanf("%d",&k);

printf("\n");

}

}