PortA analog and digital IO

[peterdeco1]

Hi Kurt. The easiest thing to do is set all of the ports to digital. When you use the ADCIN command, it will convert the particular port to analog. I put these lines on the top of almost all of my 16F819 programs.
OSCCON = $60 'set int osc to 4mhz
ADCON1 = 7 ' set all inputs to digital. adcin command will convert to analog
@ DEVICE MCLR_ON, INTRC_OSC, WDT_ON, LVP_OFF, BOD_OFF, PWRT_ON, PROTECT_ON
X VAR BYTE

START:
ADCIN 0,X ' read pot on ANA0 & place value in x

[peterdeco1]

Oh yeah. Don't forget to set the TRIS registers to enable the port as an input.
TRISA = %00000001 'set RA0 to input

[krohtech]

Thanks so much for all the help!

I knew this analog stuff would be easier then I had feared. Come to think of it everything I have attempted to do with the PIC and PBP have been easier that I initially feared. I can’t believe how easy it is to build fairly complex projects. I am going to attempt to tackle RS485 and DMX later this year or early next January.

Best Regards,

Kurt
KrohTech

“Good by and thanks for all the fish!”