Inputs are "sinking" voltages?

[sinoteq]

Your A.1 in-port is not set as input. You use PortA.1 right?? Look at this:

TRISA=%00000 'This is all A-pins to output == Decimal 0
TRISA=%00001 This makes A.0 an INPUT == Decimal 1
TRISA=%00010' This will make A.1 an INPUT == Decimal 2
TRISA=%11111 'All input== Decimal 31


Get the point?

Sometimes it is better to use Binary when setting the registers because then you "see" the number better when you compare with the datasheet.

M

[mackrackit]

No ANSEL on this chip. The ADC is controlled with ADCON0.

ADCON0=7 ' NO ANALOG

[sinoteq]

The code is for 16F688 right? Then ANSEL is the way to go and no other way.
Datasheet page 36
M

[mackrackit]

My mistake Been a long night.

[kevj]

Your A.1 in-port is not set as input. You use PortA.1 right?? Look at this:

TRISA=%00000 'This is all A-pins to output == Decimal 0
TRISA=%00001 This makes A.0 an INPUT == Decimal 1
TRISA=%00010' This will make A.1 an INPUT == Decimal 2
TRISA=%11111 'All input== Decimal 31

Doh! Yes, I think I see it now. In my mind I was thinking just assigning dec 1 would make all the registers 1 - a short way of saying %11111111 which is of course not correct.

I get it now. Knew it had to be some silly oversight like that.

The code is for 16F688 right? Then ANSEL is the way to go and no other way.
Datasheet page 36
M

So then my code on the ANSEL is correct?

ANSEL = %00000000     'Turn off analog input for ports, set digital I/O

I thought that was pretty self explanatory in the data sheet but I could still have it wrong.

Thank you!