Posted on May 17, 2011 at 12:05Hello,
I want to use the port 4 as GPIO.
I define port 4 as GPIO in PSDsoft.
In my firmware, I change the port signal by
SETB/CLR 0C0H.x (x = P4.x)
But I found everytime I set P4.x to be Low,
there will be a High pulse (160ms) every 1.4 second.
It's the same for each pin of Port 4.
Does anyone know why?
Many thanks in advance.
Larz
[ This message was edited by: Larz on 10-01-2005 15:41 ]
