Originally Posted by vlrk
Iam trying to undestand one target board schematic where it has referenses to the Led like GPIO7 , so can i assume the "7" as HwAddr where i can send input to enable / disable the led.
Probably not in the sense that you seem to mean. (Actually, that is a technically incorrect answer; you can assume whatever you like, some assumptions will be more wildly incorrect than others, though.)
7 is probably the bit number in the port that drives this kind of output (It is a big clue if there are several lines, numbered GPIO0, GPIO1....GPIO7 might be a whole port, and that ought to be apparent from looking at the schematic).
How do you drive the port? Well, that depends on the port and whether it is driven directly from the microcontroller or there is some expansion device that drives it. With the level of information provided, it is difficult to be more specific.