Port A Issues

[BigWumpus]

Please check:

Does PortA.4 require an Pull-Up-Resistance ?
Did you trap into a read-modify-write-problem, because to output of PortA.1 is bad designed and the voltage on this output can't rise to 3,x Volt or more. Then this input is read as "0" and written as "0" while changing PortA.4 !

www.sprut.de

[elec_mech]

Okay, silly me had been looking at all the posts for overcoming the A/D features on the "a" ports and nearly everywhere I went, the example programs used ADCON1 = 7. Since I have a PIC18F2525, I have several more A/D ports (?) and needed to set all of these as digital I/O, not analog. Thus, the fix is:

Adcon1 = $0F

BigWumpus, thank you for the guidance.

Hope this helps others!