2005-01-09 09:03 PM
2011-05-17 03:05 AM
Hello,
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 ]