proszę o sprawdzenie i napisanie dlaczego nie działa mi tryb 8 bitowy. Korzystałem z książki Mirka, z informacji jakie "onkel okular" proponował i nadal lipa. Tryb 4bitowy działa bez zarzutu a 8 bitów albo mam krzaki albo nic nie mam (czarne kwadraty).
Dodam, że używam kompilatora XC8, uC: PIC18F4550
Z góry dziękuję za pomoc.
Plik LCD44780.h
[syntax=c]/*
* File: LCDHD44780.h
* Author: jerzyk
*
* Created on 3 listopad 2015, 17:52
*/
#include <htc.h>
#include <xc.h>
#ifndef _XTAL_FREQ
#define _XTAL_FREQ 20000000
#endif
#define LCD_RW_PIN 'P' // 'P' -> assigned to pin or 'G' if ground
#define LCD_4BIT 0
#define LCD_8BIT 1
#define LCD_SET_BAR 0
#define LCD_RS_DIR TRISCbits.TRISC6
#define LCD_RS PORTCbits.RC6
#define LCD_EN_DIR TRISCbits.TRISC7
#define LCD_EN PORTCbits.RC7
#if (LCD_RW_PIN == 'P')
#define LCD_RW_DIR TRISCbits.TRISC0
#define LCD_RW PORTCbits.RC0
#endif
#if LCD_8BIT
#define LCD_DATA_DIR TRISD
#define LCD_DATA_PORT PORTD
#define LCD_D7 PORTDbits.RD7
#endif
#if LCD_4BIT
#define LCD_DB4_DIR TRISDbits.TRISD4
#define LCD_DB4 PORTDbits.RD4
#define LCD_DB5_DIR TRISDbits.TRISD5
#define LCD_DB5 PORTDbits.RD5
#define LCD_DB6_DIR TRISDbits.TRISD6
#define LCD_DB6 PORTDbits.RD6
#define LCD_DB7_DIR TRISDbits.TRISD7
#define LCD_DB7 PORTDbits.RD7
#endif
/************** Line Addr Mapping ******************/
#define LCD_LINE1 0x80
#define LCD_LINE2 0xC0
#define LCD_LINE3 0x94
#define LCD_LINE4 0xD4
/************ LCD Command Mapping *****************/
#define LCD_CMD_CLS 0x01
#define LCD_CMD_HOME 0x02
#define LCD_CMD_CURSOR_ON 0x0a
#define LCD_CMD_CURSOR_OFF 0x08
#define LCD_CMD_CURSOR_INC 0x06
#define LCD_CMD_DSP_ON 0x0c
#define LCD_CMD_DSP_OFF 0x08
#define LCD_OP_8BIT 0x38
#define LCD_OP_4BIT 0x28
const char _LCD_bar[6][8] = {
{0x00,0x00,0x00,0x00,0x00,0x00,0x00},
{0x10,0x10,0x10,0x10,0x10,0x10,0x10},
{0x18,0x18,0x18,0x18,0x18,0x18,0x18},
{0x1e,0x1e,0x1e,0x1e,0x1e,0x1e,0x1e},
{0x1f,0x1f,0x1f,0x1f,0x1f,0x1f,0x1f}
};
const char _LCD_dataBank[8] = { 0x80,0x81,0x82,0x83,0x84,0x85,0x86 };
const char _LCD_dataBankReg[8] = {0x00,0x01,0x02,0x03,0x04,0x05,0x06};
void _LCD_NibbleOut(unsigned char);
void _LCD_WriteNibble(unsigned char);
void LCD_SetSign(unsigned char nr, unsigned char *def_znak);
void LCD_Init(void);
void LCD_WriteCmd(unsigned char);
void LCD_WriteData(unsigned char);
void LCD_WriteText(const char*);
void LCD_Home(void);
void LCD_Clear(void);
void LCD_GoTo(int x, int y);
void LCD_BargraphTest();
#if LCD_8BIT
void LCD_Busy();
#endif
#if (LCD_4BIT == LCD_8BIT)
#error "*** LCD mode is set at 8 and 4 or exempted! Please check your configuration! ***"
#endif[/syntax]
Plik LCD44780.c
[syntax=c]#include "LCD44780.h"
#if LCD_4BIT
void _LCD_WriteNibbleOut(unsigned char c){
if(c & 0x01)
LCD_DB4 = 1;
else
LCD_DB4 = 0;
if(c & 0x02)
LCD_DB5 = 1;
else
LCD_DB5 = 0;
if(c & 0x04)
LCD_DB6 = 1;
else
LCD_DB6 = 0;
if(c & 0x08)
LCD_DB7 = 1;
else
LCD_DB7 = 0;
}
void _LCD_WriteNibble(unsigned char c){
LCD_EN = 1;
_LCD_WriteNibbleOut(c >> 4);
LCD_EN = 0;
LCD_EN = 1;
_LCD_WriteNibbleOut(c);
LCD_EN = 0;
__delay_us(50);
}
#endif
void LCD_WriteCmd(unsigned char code){
#if LCD_4BIT
LCD_RS = 0;
_LCD_WriteNibble(code);
#endif
#if LCD_8BIT
LCD_Busy();
LCD_RS = 0;
LCD_RW = 0;
LCD_EN = 1;
LCD_DATA_PORT = code;
for(int i=0;i<6;i++)
__delay_ms(10);
LCD_EN = 0;
#endif
}
void LCD_Init(void){
#if LCD_4BIT
unsigned char count;
LCD_DB4_DIR = 0;
LCD_DB5_DIR = 0;
LCD_DB6_DIR = 0;
LCD_DB7_DIR = 0;
#endif
#if (LCD_RW_PIN == 'P') && (LCD_4BIT)
LCD_RW_DIR = 0;
LCD_RW = 0;
#endif
#if LCD_8BIT
LCD_DATA_DIR = 0;
LCD_DATA_PORT = 0;
#endif
LCD_EN_DIR = 0;
LCD_RS_DIR = 0;
__delay_ms(15);
LCD_RS = 0;
LCD_EN = 0;
#if LCD_4BIT
for(count = 0; count < 4; count++){
LCD_EN = 1;
_LCD_WriteNibbleOut(0x03);
LCD_EN = 0;
__delay_ms(5);
}
LCD_EN = 1;
_LCD_WriteNibbleOut(0x02);
LCD_EN = 0;
__delay_ms(1);
LCD_WriteCmd(LCD_OP_4BIT);
LCD_WriteCmd(LCD_CMD_DSP_OFF);
LCD_WriteCmd(LCD_CMD_CLS);
__delay_ms(2);
LCD_WriteCmd(LCD_CMD_CURSOR_INC);
LCD_WriteCmd(LCD_CMD_DSP_ON);
__delay_ms(1);
#endif
#if LCD_8BIT
LCD_WriteCmd(LCD_OP_8BIT);
LCD_WriteCmd(LCD_CMD_CURSOR_INC);
LCD_WriteCmd(LCD_CMD_DSP_OFF);
LCD_WriteCmd(LCD_CMD_CLS);
#endif
#if LCD_SET_BAR
// setup bar graph elements
for(int j=0;j<6;j++){
LCD_SetSign(_LCD_dataBank[j],_LCD_bar[j]);
}
#endif
}
void LCD_Home(void){
LCD_WriteCmd(LCD_CMD_HOME);
__delay_ms(2);
}
void LCD_Clear(void){
LCD_WriteCmd(LCD_CMD_CLS);
__delay_ms(2);
}
void LCD_GoTo(int x, int y){
#if LCD_4BIT
LCD_WriteCmd(0x80|(x+(0x40*y)));
#endif
#if LCD_8BIT
#endif
}
void LCD_WriteData(unsigned char data){
#if LCD_4BIT
LCD_RS = 1;
_LCD_WriteNibble(data);
#endif
#if LCD_8BIT
LCD_Busy();
LCD_RS = 1;
LCD_RW = 0;
LCD_EN = 1;
LCD_DATA_PORT = data;
LCD_EN = 0;
#endif
}
void LCD_WriteText(const char *string){
while(*string){
LCD_WriteData(*string++);
}
}
#if LCD_SET_BAR
void LCD_BargraphTest(){
char x,i;
LCD_GoTo(0,0); LCD_WriteText("Up ");
for(x=0;x<16;x++){
for(i=0;i<5;i++){
LCD_GoTo(x,1);
LCD_WriteData(_LCD_dataBankReg[i]);
for(int t=0;t<10;t++)
__delay_ms(2);
}
}
for(int t=0;t<100;t++)
__delay_ms(1);
LCD_GoTo(0,0); LCD_WriteText("Down ");
for(x=15;x>=0;x--){
for(i=4;i>=0;i--){
LCD_GoTo(x,1);
LCD_WriteData(_LCD_dataBankReg[i]);
for(int t=0;t<10;t++)
__delay_ms(2);
if(i == 0) break;
}
if(x == 0) break;
}
}
#endif
#if LCD_8BIT
void LCD_Busy(void){
LCD_D7 = 1;
LCD_RS = 0;
LCD_RW = 1;
LCD_EN = 1;
for(int i=0;i<6;i++)
__delay_ms(10);
while(LCD_D7);
LCD_D7 = 0;
}
#endif
void LCD_SetSign(unsigned char nr, unsigned char *def_znak){
register unsigned char c;
LCD_WriteCmd( 64+((nr&0x07)*8) );
for(unsigned char i=0;i<8;i++){
c = *(def_znak++);
LCD_WriteData(c);
}
}[/syntax]Statystyki: Napisane przez jerzyk31 — 2 sty 2016, o 12:12
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