LCD on Port A prints ? Marks and doesn't work...

[Sparkoids]

Any ideas please? It simulates as expected but not in real life....

I seem to remember I souldn't use the LCD on Port A of ECIO not sure why though...


James :-}

[Enamul]

Can you please mention which ECIO you are using? I mean ECIO-28 or ECIO-40

[Enamul]

Please add the following code in the beginning of the flowcode in the c code box...

Code: Select all

cmcon=0x07;

Please let me know is that worked or not.
Enamul

[Sparkoids]

The ECIO 40 - I'll check your fix now...

[Sparkoids]

Nope still prints '?' in real life.

The file is here - I'm just trying to see the numbers selected on the slide switches on the LCD to test it...


James :-}

[Enamul]

This should certainly work..

Code: Select all

cr_bit(hlvdcon,HLVDEN);
cr_bit(sspcon1,SSPEN);

Try this code together with earlier one..if not work then definitely USB issue...In that case use all RA pin except RA4 use from other port..
Enamul

[DavidA]

Hello James,

If Enamuls code doesnt work i would try using a different port as i remember there being a problem with one of the pins on PORTA being attached to the LED or is Vin, i cant remember why, it would be worth checking the 18F4455 datasheet to see if these pins can be used.

[Sparkoids]

Thanks for the help all but I gave up and set the LCD on Port D and the Switchbank on Port B and it works fine!

(Plus I don't understand what Enamul is actually doing and don't want to look stupid by admitting that!)

Best regards,


James :-}

PS - I will check if your version later Enamul but the excitement of seeing the numbers working OK on the display is too exciting...

[kersing]

If Enamuls code doesnt work i would try using a different port as i remember there being a problem with one of the pins on PORTA being attached to the LED or is Vin, i cant remember why, it would be worth checking the 18F4455 datasheet to see if these pins can be used.

ECIO-40 uses pin RE2 for USB LED, not a port A pin. It is an ECIO feature, not of the PIC so this will not be mentioned in the Microchip data sheet. It is listed in the ECIO data sheet. (For ECIO-28 it is pin RA5)

[medelec35]

Hi James,
Would you like to give this a try please.
Just to see if it works on port A.
This may not still work of course.

Martin

[Sparkoids]

Hi Martin,

It doesn't work I'm afraid but it does something different now.

It scrolls solid blocks of 5x7 with question marks randomly placed...

Thanks for trying anyway - I'm sticking to Port D for the LCD and Port B for the slide switches...


James :-}