Detecting input

[steve_venkat]

In this the LED is controlled by both controller and switch.I have to sense when the switch is pressed too....

I planned when the output control pin is zero and and switch is pressed means controller will sense the input.
But i'm using PWM also,in that case how I can sense the input from button..?

 

[Marsh Lane]

I may be on the wrong track here, but could you not wire the switch to one of the PIC inputs, and then get the PIC code to turn the LED on from a PIC output when the switch is pressed - that way you get both the LED operational from the switch, and are able to react when the input senses the switch has been pressed?