introduction new member

Welcome to the element14 community!  There are plenty of great projects other cool write ups that you can use to help you learn more about the ATmega 328p.  Check out all of the Arduino Projects under "Challenges & Projects/Arduino".

hello thanks for your answer,

but I wanna work without arduino, just with atmega328p, I dont wann use libray for now, for best understand the code, and leran a lithe more,

thanks

A while ago Atmel produced a short training series on the AVR based around the Atmel Xplained Mini ATmega328P dev board.

Getting Started with AVR
https://www.youtube.com/watch?v=UMi6lg563BA&list=PLtQdQmNK_0DRhBWYZ32BEILOykXLpJ8tP

May be of some interest ?

I already due some class, begin C, mplabx user,advance c/c++, etc... :D thanks for the tip.

Looking through the specification, I do see the the same thing (the N and F bits are repositioned).  A lot of the specifications that I have used often do have errors, especially in the examples.  I would send the N and F bits in DB3 and DB2 as shown on page 13.

Keep in mind that while using the 4-bit mode, the data is sent using the DB7 through DB4 (not DB3  to DB0).

yes I, only use DB7->DB4,  have have tryed the two ways, but nothing happen. I think it's not a mistake, maybe is for work in 4bit mode.

first I send the high niblble

second the low nibble in the corectly posiiton, .

if you look at the entry mode set,  or display clear they not have change the bit position,

in 4bit mode the config DB on function set are ok, I should be use the way of pag 20. but anyway I cant put it work, beacause I cant change the fonte size from 5*8 dot to 5*11 dot, I need read more information about this, I dont know yeat if the 5*11 its only for caracter genarator ou the pattern caracter from DDRAM.

thanks so much for your help

the N I can put it work nice, N=1 for 1line and N=1 for 2 line,

the DL is always 0, I think it's work good beacuse I can display caracther on displa.

but when tyr change de F to 0 or 1  nothing hapen :D

I can not imagine that the format of the commands should ever change depending on the 4/8bit mode.  Sometimes it is helpful to look at the specification of other chips that are listed as compatible.  Here is a link to a compatible chip that might help you figure out the issues.

https://www.sparkfun.com/datasheets/LCD/HD44780.pdf

Good luck.

I ported this driver to other controllers and a linux device. I also did it without Arduino. But I used their code as a starting point.

In your case, the Arduino driver is already targeted to your controller. Taking the Arduino code and removing the Arduino specifics should be a doable exercise.

You have a library that's known to work with the display. And you remove the flavour that you don't want in your code.

This is a very good point.  Working from a know good starting point (existing library), allows you to see an example of how to write your standalone software.  Also, if you have an Arduino, you can write a simple program to control the LCD, proving that it is functional.

I have some arduinos, and some times  I test with some library for check if is every thing ok., after tested onvarduido I start "coding" on MCstudio.

I will check hd44780 data sheet .

thanks

I will return with feedback

I have some arduinos, and some times  I test with some library for check if is every thing ok., after tested onvarduido I start "coding" on MCstudio.

I will check hd44780 data sheet .

thanks

I will return with feedback