LCD(pic16f688)

[Darrel Taylor]

Hi tarr,

Couple of possibilities. The 16F688 has comparators, and individually selectable A/D inputs, so you need to ...

CMCON0 = 7
ANSEL = 0

to be able to use PORTA as digital. ADCON1=7 doesn't work here.

Also, the LAB-X4 has several jumpers, to select whether you are using the Parallel or Serial interface to the LCD.

For the Serial interface you should have

JP7-12 Open
JP3 - Installed

Once you turn off the analog ports you should also see the data sent to the LCD on the RS-232 port. (If JP13 is installed)

When using the serial interface, you don't need the LCD DEFINE's.

HTH,
  Darrel