Looking for LCD source code

[JoKKeR]

Hi,


Im using PIC24F series A PIC24F16KA102
Iv got 2 LCD-s, 1 with HD44780 and the other one is KS6600 controlled
Also im using C30 as compiler (for PIC24F no software modules for lcd




Im looking for a sample code ... a routines .... anything i could use to get stared with LCD.
I appreciate every suggestion, reply, thought ... on this subject.


Some questions i like to get answered

1-How universal are the routines for char LCDs (Different PIC series...)
2-Can i use very simple LCD initializing program for a complex project, any problems or difficulties i may face later ?
3-Iv seen a LCD source code with print function, WOW really nice. Do i really need it ?
4-Iv tried to display something on LCD... nothing shows up. If contrast pin is equal to a LCD voltage is it OK ?
5-If ill try to write a LCD initializing code by myself instead of using sample. Will it benefit ? Time ... result... knowledge.
6-Is there a useful tutorial You know, ebook maybe... i could use.
7-What is the difference between 8 bit and 4 bit data interface ? How complicated is the in code configuration ?
8-Any problems i may face later ?


Thank you

 

[bobcat1]

Hi

Here is an answer to some of your question:

1) If you separates hardware access function from software(LCD access function) all software function is almost the same with hardware function can be a timing problems - LCD is a very slow device

2) Yes, if you use the 44780 (most of LCD char type controller are based on the 44780 )

3)NO, it is only a wrapping function to ease the API

4)It is depend on the LCD manufacture you can connect it to GND via a resistor or supply a negative rail for best contrast (don't left it floating - not connected)

5)Yes, You will gain some experience for your next LCD project

6)There are many - search Google for "44780 & LCD"

7) Basically 4 bit hardware is slower then 8 bit and it is mostly used to spear micro controller IO's

8)many..... Experience will short the the amount of problems you will encounter- good luck!.


All the best

Bobi

The microcontroller specialist

 

[JoKKeR]

It could be great if someone would point out a code example i can use(PIC24F, C30 compiler) or one which is easily modifiable.

What about a LCD peripheral module code from another compiler or for different MCU series ?


I found many examples on internet but there were non for C30 PIC24F. Could You, as a more experienced user, point out a code for me to start with or give me advise , about a start, i so much need.


In a C30 compiler there are no peripheral module code for PIC24F for LCD, but there are one for PIC24H. What is the difference between tease two and what problems i may face while using library for 24H series for PIC24F series MCU.


I included a doc file XLCD for PIC24H. Iv seen AND_OR_MASK definitions in a PIC24F libraries but, in this case (PIC24H library) there is a AND_MASK. It is theme to deep for beginner as im ... at the moment. what does it mean and stand for ?


I appreciate every reply, suggestion, thought ... I try to threat them with the highest priority
Thank you !