I need to give logic 1 to one pin. I am just giving 5v directly to that pin . But its not working. Not sure what to do..PLesase suggest.

 

You need to provide us with enough information so we can offer potential solutions.

 

Code? Your code would help along with a drawing of the circuit. There is no way to tell what your problem might be without more information.

Ron

 

If your intent is to read a logical 1 or 0 from that pin, then be sure to set the pin mode as digital input. Also be sure to pull the pin up or down so that it's not floating. The processor probably has a way to turn on internal pull-up or pull-down resistors so that you don't have to do it externally.

 

I need to give logic 1 to one pin. I am just giving 5v directly to that pin . But its not working. Not sure what to do..PLesase suggest.

How do you know? What are your expectations?

You need to show your code and your schematic, which has been mention. If you have your circuits on a breadboard, a focused picture would do just fine.

 

is digital pin or analog pin?
is it configured for input or output?