I'm working on a program, and in a nutshell, I just need to know how to tell if the PORTD pins are high or low, based on push buttons.

Wasn't sure if I could do a if(RD0<1) blah blah blah.

Sorry, tried searching, couldn't find an answer. I'll keep searching.

Thanks for your help!

 

You could try something like this:

while (1)
{
  if (RD0)
  {
     do some code
   }
  if (RD1)
  {
     do some other code
   }
else
   {
     do something complete different
   }
} // end while

I'm sure there are other way to do it.

 

You could try something like this:

while (1)
{
  if (RD0)
  {
     do some code
   }
  if (RD1)
  {
     do some other code
   }
else
   {
     do something complete different
   }
} // end while

I'm sure there are other way to do it.

What exactly is the while(1) doing? And is the if(RD0) checking if RD0 is high?

Thanks again.

 

The

while (1)
{
  do something forever
}

Is an endless loop, since 1 is not changing.

if (RD0)
{
   do some code
}

Checks if RD0 is 1 or high. You could write:

if (RD0==1)
{
  do some code
}

 

The

while (1)
{
  do something forever
}

Is an endless loop, since 1 is not changing.

if (RD0)
{
   do some code
}

Checks if RD0 is 1 or high. You could write:

if (RD0==1)
{
  do some code
}

Ok, so my original idea of if(RD0<1) would suffice? If that'll work, I think I'm good to go. Just wasn't sure how Hi Tech C dealt with the inputs. I'm more interested in when it's low, than high.

Thanks again, I appreciate it.

 

Just in case someone searches this for similar advice, I went with this code, and it works like a charm.

Thanks guys.

if(RD0==0)
{
	String=E_S;
	Tolerance=.224;
	TRISA=0b00100010;
}

if(RD1==0)
{
	String=A_S;
	Tolerance=.300;
	TRISA=0b00000001;
}

if(RD2==0)
{
	String=D_S;
	Tolerance=.4008;
	TRISA=0b00011000;
}

if(RD3==0)
{
	String=G_S;
	Tolerance=.535;
	TRISA=0b00100100;
}

if(RD4==0)
{
	String=B_S;
	Tolerance=.674;
	TRISA=0b00110000;
}

if(RD5==0)
{
	String=EH_S;
	Tolerance=.899;
	TRISA=0b00100010;
}