Port RA4 ....16F84A
Posted: Wed May 23, 2007 5:05 pm
I am quite new to flowcode so excuse me if this is a silly question.
I have programmed this PIC 18F84A, to turn on each port ( ie: RBO to RB7 & RA0 to RA4 a total of 13 ports) in a sequence of..... on for 1 second & off for one second.. next port etc. I have used the Led blocks to show the outputs via the Leds lighting up in sequence. My problem is that, although all of the Leds light up correctly in sequence in the run mode, when I transfer the PIC to an equivalent hand built circuit I constructed, then RA4 does not light the Led. When I connect my multimeter to the RA4 port there is no voltage output from this port. Any ideas?
I have programmed this PIC 18F84A, to turn on each port ( ie: RBO to RB7 & RA0 to RA4 a total of 13 ports) in a sequence of..... on for 1 second & off for one second.. next port etc. I have used the Led blocks to show the outputs via the Leds lighting up in sequence. My problem is that, although all of the Leds light up correctly in sequence in the run mode, when I transfer the PIC to an equivalent hand built circuit I constructed, then RA4 does not light the Led. When I connect my multimeter to the RA4 port there is no voltage output from this port. Any ideas?