embedded c doubt

Question

The below code is not working. In this program, if I press Swich1(PORTK PK1 pin of Arduino Mega), and then if I press Switch2 , led 0 to 3 (whichare connected at pins 0 to 3 of port F of Arduino mega) should blink one by one for each pressing of switch. If I press SW2 switch two times, then while pressing SW1 switch, led 4 to 7 should blink one by one. But first case is working. second case is not working. Pls help to correct the program. Thanks.

void setup() {
DDRF =0xFF;
DDRK = 0x00;
volatile long i,j,m;
j=0;
m=0;
while(1){

if((PINK & 0x02) == 0x02)
//for(i=0;i<1000;i++);
{
j=1;
if (j/2) {

if((PINK & 0x01) == 0x01){
m++;
for(i=0;i<50000;i++);}
if(m==1)
PORTF =0x01;
else if(m==2)
PORTF=0x02;
else if(m==3)
PORTF=0x04;
else if (m==4){
PORTF = 0x08;
m=0;
}
}

if(j%2){
if((PINK & 0x01) == 0x01)
// for(i=0;i<20000;i++);
{
m++;
for(i=0;i<50000;i++);}
if(m==1)
PORTF =0x01;
else if(m==2)
PORTF=0x02;
else if(m==3)
PORTF=0x04;
else if (m==4){
PORTF = 0x08;
m=0;
}

}}}}

void loop() {
// put your main code here, to run repeatedly:

}

Answer 1

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