Comments on: Interfacing LCD Modules with PIC Microcontrollers.

By: Embiale

Embiale — Mon, 30 Jan 2012 09:31:46 +0000

Hi the lcd hex file works. but when i tried to compile the lcd_test.h file, the compiler says “extended cpu mode is enabled,the compiled file doesn’t work”.how can i configure mplab ide hitech so that it can work? am waiting ur help. thank u.

By: jason

jason — Sat, 28 Jan 2012 16:49:33 +0000

hi
from the program that is given,which part i need to change if I use the pic16f877a?

By: Alpha

Alpha — Tue, 17 Jan 2012 03:16:32 +0000

Okay, thank you so much, Avinash!

By: Avinash

Avinash — Tue, 17 Jan 2012 03:14:03 +0000

@Alpha,

If we don’t read the LCD how we know when it busy or free? We cannot send command when its busy!

If you use fixed resistor how will you adjust the contrast. In worst case without proper contrast you cannot see any thing on LCD.

By: Alpha

Alpha — Mon, 16 Jan 2012 13:38:25 +0000

Hi, I would like to ask if it is possible to tie the R/W pin to GND(Logic 0) as i will only be writing to the LCD and not going to read from it, and also a fixed resistor at 10k Ohms instead of a variable resistor?

By: sam

sam — Sat, 31 Dec 2011 18:02:51 +0000

I want to interfacing LCD with PIC16F628A using Hi Tech C. Where I can get the library files?

By: Avinash

Avinash — Thu, 29 Dec 2011 03:47:09 +0000

notice the difference between

including of htc.h and lcd.h

By: Avinash

Avinash — Thu, 29 Dec 2011 03:39:04 +0000

@Eric

See this
http://gcc.gnu.org/onlinedocs/cpp/Include-Syntax.html

You should notice that in my program I have writtem


#include "lcd.h"

this syntax searches lcd.h in the same directory first where the source file contain the #include directive.

I request all users to jump into Embedded system only after knowing C very well, or be confused over the basic at every line.

By: Eric

Eric — Thu, 29 Dec 2011 02:04:21 +0000

Here is a very basic question. This LCD example contains a header file named lcd.h Hi Tech C also has a lcd.h file. How does the compiler know to use the included lcd.h or the one that is part of Hi Tech C?

By: Rakesh

Rakesh — Tue, 06 Dec 2011 21:54:22 +0000

IF i am not wrong then if i have to PIC18f4550 inspite of PCI18f4520 then all I have to do is to set config according to PIC18f4550 …
am i right?

Please provide the config bytes for pic18f4550 the CONFIG of pic18f4550 is in the from something like

;Configuration bits
CONFIG OSC = HS
CONFIG FCMENB = OFF
CONFIG IESOB = OFF
CONFIG PWRT = ON
CONFIG BOR = BOACTIVE
CONFIG BORV = 27
CONFIG WDT = OFF
CONFIG WDTPS = 128
CONFIG MCLRE = ON
CONFIG LPT1OSC = OFF
CONFIG PBADEN = OFF
CONFIG DEBUG = OFF
CONFIG XINST = OFF
CONFIG BBSIZ = 1024
CONFIG LVP = OFF
CONFIG STVREN = OFF
CONFIG CP0 = OFF etc etc

But in your code it is some other. I couldn’t find and understand much of datasheet for pic18f4550.

Please provide chip setting with a short desc

Thanks

By: jhunmar

jhunmar — Fri, 02 Dec 2011 00:30:43 +0000

thanks a lot for your circuit i got a lot of ideas for my project design,,,,,

By: Arun Sharma

Arun Sharma — Sat, 12 Nov 2011 04:56:53 +0000

Nice Tutorial!!!
I want to interface Graphical LCD based on two KS0108 Controller,
with my PIC16F877A micro-controller.
Do you have any tutorial for that.

By: [SOLVED] 16x2 lcd display problem

[SOLVED] 16x2 lcd display problem — Sun, 17 Jul 2011 22:20:54 +0000

[...] my problem with this kind of lcd is similar but i have initialization problem, it's china one Interfacing LCD Modules with PIC Microcontrollers. | eXtreme Electronics I have this handy and put it to the project! I'm nw with C and especialy with ASM i just have the [...]

By: Andrew Stivens

Andrew Stivens — Thu, 05 May 2011 05:54:56 +0000

Ty for all, this webpage is so awesome!!!!

By: jason

jason — Sat, 05 Mar 2011 08:00:09 +0000

Hi, i have a problem on the 1st line of my lcd, apparently its offset by 2 box to the left. But not a problem on the remaining line. I am using a 4×20 lcd. And everything works fine except for the offset part. It only occurs on the words but not the counting number part. Help? thx!

By: Jojo

Jojo — Thu, 03 Mar 2011 14:23:37 +0000

Can this be used on the PIC 18F4550??

By: mike

mike — Wed, 03 Nov 2010 12:01:47 +0000

nice tutorial.
rather i would like to share an another good tutorial for Interfacing LCD with 8051 Microcontroller
http://www.engineersgarage.com/microcontroller/8051projects/interface-lcd-at89c51
check this link out

By: need data code for 8 by 8 dot matrix display

need data code for 8 by 8 dot matrix display — Fri, 08 Oct 2010 10:28:33 +0000

[...] by 8 dot matrix display Check out these links & it may help you. A PIC Serial LCD project.. Interfacing LCD Modules with PIC Microcontrollers. | eXtreme Electronics. 2-Wire PIC LCD Interface by Myke Predko. Regards, Jerin. Reply With Quote View [...]

By: sanyi

sanyi — Mon, 16 Aug 2010 19:59:53 +0000

Thank you, it was wery helpful!

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