lost in lcd land

[jcleaver]

new to picpro trying to get a lcd display using lcdout tried all examples and info i can find hookup seems ok using either f628a or f627 no nothing changed porta to digital nothing any help would be greatly appreicated if i cant get this far
in trouble

[ErnieM]

Well, if you post a schematic or some code we may be more helpful.

Re-check the examples shown in the book. Make sure all your define lines are 100%. Buzz out the breadboard again. All wires!

And lastly, as it catches me near every time I start a new PIC, make sure the pins you connect to are not used for some analog function (PICs default to those). You can try something like setting all the LCD drive pins high and low in a loop, make sure they all do that. Fast loop if you have a scope, slow loop if you use a DVM.

The LCD stuff works.

[mister_e]

also there's some i/o that can't be used as OUTPUT, there's also some with open-drain... just post your code here and say if you're using the internal oscillator or an external crystal... if so wich speed.

[jcleaver]

the code is the example in pbp book lcdout pg 94
wiring checks ok using internal osc on 628a

[mister_e]

Did you add CMCON=7 ?
Is any pull-up resistor on RA.4?
Did you add a start-up delay for the LCD between 500mSec and 2 Second before using the first LCDOUT?
Are you sure of your Config Fuse setting for the MCLR pin and Internal OSC?
...
...
...
Are you sure your LCD controller is compatible with the Hitachi one?

[jcleaver]

yes to the first ones ???? how do you set config fuse never seen this one in the manual?? does anyone else think the manual is very weak and not for the newbe

[jcleaver]

problem seems to be activating the internal osc on the f628a
define osc 4 does not work any help would be appreicated dont see anything in pbp manual