David VanHorn wrote: > On Nov 15, 2007 5:01 PM, Robin Abbott wrote: > >> I have sympathy wit the OP - after 15 years of PIC programming this has >> still occasionally bitten me, in fact familiarity breeds contempt as I tend >> to never look at the digital I/O section any more. Do people realise that >> most processors have at least one pin which behaves differently like the OD >> normally used on RA4, or the GPIO input on 8 pin devices which is dual >> purpose with MCLR and which is only an input and cannot be set to have a >> pull up ? >> >> FYI The AVR devices default to digital inputs on A/D pins. >> > > > To me, the pic seems to have more "exceptions" than anything else I've > worked with. > As you mentioned, the AVR defaults to all digital, and the I/Os are > all the same, without special pins that are O/C or otherwise > different. > You can activate special features like analog, comparitor, etc, but > you have to ask for them. > I don't see it that way. I just believe that MC is inept at getting the word out CLEARLY. They were not that way early on, but then they were not releasing incrementally new but poorly tested devices every week either. Just my 2cents. --Bob -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist