Running an LCD on different port

[mister_e]

Change this

DEFINE LCD_DBIT 4 ' 4 bit selected

to

DEFINE LCD_DBIT 0 ' Databit start at PORTB.0

[NatureTech]

Thanks for Instant reply but...


Although i have changed the bit size from 4 to 0,it still remains the same.It does nothing.I even switch compiling from MPASM to standard compiler and it didn't show any effect at all.All the display line shows blank.


It's a cheap LCD ( LM044L) and it's buggin me a lot.I still wonder why the PIC never do anything.I had no problem compiling other program but not this one.


Any idea?.Pls help.Thanks a lot mister_e

[mister_e]

Make sure the R/W pin is set to GND & play with the contrast Pot

What happen?

What is your PIC #?

Could be the the config fuses as well, make sure you set HS_OSC and LVP_OFF

Did you tied your unused LCD data pin (DB0, DB1, DB2, DB3) to gnd?

And it's suppose to be a 4X20 LCD type.. you may try to add

DEFINE LCD_LINES 4

[NatureTech]

I never tie the unused pin to ground as i belive it can be left floating?.Anyhow i will do it.I use PIC16F877.HS_OSC is set .I always set LVP_OFF (Low Voltage Programming) as it always does.Ok.I will insert : DEFINE LCD_LINES 4 :and see what happens.Not today but for sure tomorrow.



Thanks a lot Steve.You are great.Hope you can help me tommorow too =>.




NatureTech.
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