[SOLVED] Problem with LCD in 8 bit mode-PIC Hi-Tech

[The._.One]

Problem with LCD

Hi, I'm using PIC and PIC C18 compler from Hi-tech. I had little problem with LCD in 8 bit mode. When i want print number it's ok, but when i want print some char i had problem.
This is library which i use:

#include <htc.h>
#include	"lcd8.h"

#define	LCD_RS RC0
#define	LCD_RW RB5
#define LCD_EN RC5

#define LCD_DATA	PORTA

#define	LCD_STROBE()	((LCD_EN = 1),(LCD_EN=0))

void lcd8_write(char c) {
	_delay(10);
	LCD_DATA = c;
	LCD_STROBE();
}

void lcd8_clear(void) {
	LCD_RS = 0;
	lcd8_write(0x01);
	_delay(500);
}


void lcd8_putch(char c) {
	LCD_RS = 1;
	if(c >= 0x40 && c <= 0x7f)
		c+=0x40;
	lcd8_write( c );
}

void lcd8_puts(const char * s) {
	LCD_RS = 1;
	while(*s)
		lcd8_putch(*s++);
}

void lcd8_goto(char pos) {
	LCD_RS = 0;
	lcd8_write(0x80+pos);
}

void lcd8_init(void) {

	LCD_RS = 0;
	LCD_EN = 0;
	LCD_RW = 0;
	
	_delay(3750);
	LCD_DATA = 0x30;
	LCD_STROBE();
	_delay(1250);
	LCD_STROBE();
	_delay(50);
	LCD_STROBE();
	_delay(50);

	lcd8_write(0x38);
	lcd8_write(0x08);
	lcd8_clear();
	lcd8_write(0x06);
  lcd8_write(0x0C);
}

When i write lcd8_putch('e'); I have on LCD •.
This character have same low half-byte abd upper half-byte is +4.
I have use condition for corect this, ucan see it in code above. It!s some resolution where a don't need charge 4 to upper half-byte?

 

[laktronics]

Re: Problem with LCD

Hi,
Lower nibbles of the characters 'e' and '*' are not same, one is 5h and the other is 0ah . If all numerals are comming correctly, may be a display problem. Anyway check the wiring of data line B6 for any shorts.

Regards,
Laktronics

 

[The._.One]

Re: Problem with LCD

Oki i will try find error in schematic. I try use 4 displey and all do same thing.


I found error i use PORTA with disable OSC pin and i think then pin are going 0,1,2,3,4,5,6,7 but they are 0,1,2,3,4,5,7,6 Thank u very much.