Thanks for both of these messages. I agree and will definitely verify this first thing Friday morning. Quintin Beukes On Wed, Sep 23, 2009 at 7:56 PM, Tamas Rudnai wrot= e: > On Wed, Sep 23, 2009 at 6:16 PM, Spehro Pefhany wrot= e: > >> At this point you should not be trusting anything- verify that the pins >> are actually outputs by verifying that they will actually sink or source >> current (eg. to an LED in series with a resistor to Vdd or Vss). >> You could also try feeding a ~10Hz 0V/5V square wave signal into each >> "output" >> via a 1K series resistor and see if any misbehavior is noted. >> > > That's a good point actually. I am not sure which language the firmware w= as > developped but *if* there is any firmware error on banking or context > savings in the isr or even with the indirect addressing then the TRIS cou= ld > set incorrectly at some point so that the PORTB becomes floating input fr= om > active output. > > Tamas > > > >> >> >Best regards, >> >> Spehro Pefhany --"it's the network..." =A0 =A0 =A0 =A0 =A0 =A0"The Journ= ey is the >> reward" >> speff@interlog.com =A0 =A0 =A0 =A0 =A0 =A0 Info for manufacturers: >> http://www.trexon.com >> Embedded software/hardware/analog =A0Info for designers: >> http://www.speff.com >> >> >> >> -- >> http://www.piclist.com PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> > > > > -- > http://www.mcuhobby.com > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist