Biblioteka wyswietlacza:
[syntax=c]/*
* lcd_init.c
*
* Created on: 26 wrz 2015
* Author: Jacek
*/
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/eeprom.h>
#include <avr/pgmspace.h>
#include <stdlib.h>
#include <util/delay.h>
#include "lcd_init.h"
uint8_t check_BF(void);
static inline void init_out(void)
{
DDRC |= (1<<PC7); //D7
DDRC |= (1<<PC6); //D6
DDRC |= (1<<PC5); //D5
DDRC |= (1<<PC4); //D4
}
static inline void init_in(void)
{
DDRC &= ~(1<<PC7); //D7
DDRC &= ~(1<<PC6); //D6
DDRC &= ~(1<<PC5); //D5
DDRC &= ~(1<<PC4); //D4
}
static inline void lcd_shalf(uint8_t data) //Przesłanie połowy
{
PORTC = (PORTC & 0x0F) | (data & 0xF0);
}
static inline void lcd_sfull(uint8_t data1) //Przesłanie calego bajtu
{
init_out();
PORTD &= ~(1<<RW); //RW
PORTD |= (1<<E); //E
lcd_shalf(data1);
PORTD &= ~(1<<E); //E
PORTD |= (1<<RW);
PORTD |= (1<<E);
lcd_shalf(data1<<4);
PORTD &= ~(1<<E);
while (check_BF() & (1<<7));
}
void lcd_write_cmd(uint8_t cmd) //Komenda
{
PORTD &= ~(1<<RS);
lcd_sfull(cmd);
}
void lcd_write_data(uint8_t data) //Dane
{
PORTD |= (1<<RS);
lcd_sfull(data);
}
static inline uint8_t lcd_rhalf(void) //Odczytanie polowy
{
uint8_t result=0;
if(PINC&(1<<PC4)) result |= (1<<0);
if(PINC&(1<<PC5)) result |= (1<<1);
if(PINC&(1<<PC6)) result |= (1<<2);
if(PINC&(1<<PC7)) result |= (1<<3);
return result;
}
static inline uint8_t lcd_rfull(void) //Oczytanie calego bajtu
{
uint8_t result=0;
init_in();
PORTD |= (1<<RW);
PORTD |= (1<<E);
result = (lcd_rhalf() << 4);// odczyt starszej części bajtu z LCD D7..D4
PORTD &= ~(1<<E);
PORTD |= (1<<E);
result |= lcd_rhalf();// odczyt młodszej części bajtu z LCD D3..D0
PORTD &= ~(1<<E);
return result;
}
uint8_t check_BF(void) //FLaga
{
PORTD &= ~(1<<RS);
return lcd_rfull();
}
void lcd_cls(void)
{
lcd_write_cmd( LCDC_CLS );
}
//Inicjalizacja
void lcd_init(void)
{
init_out();
DDRD |= (1<<RS);
DDRD |= (1<<E);
DDRD |= (1<<RW);
PORTD |= (1<<RS);
PORTD |= (1<<E);
PORTD |= (1<<RW);
_delay_ms(15);
PORTD &= ~(1<<E);
PORTD &= ~(1<<RS);
PORTD &= ~(1<<RW);
PORTD |= (1<<E);
lcd_shalf(0x30);
PORTD &= ~(1<<E);
_delay_ms(4.1);
PORTD |= (1<<E);
lcd_shalf(0x30);
PORTD &= ~(1<<E);
_delay_ms(100);
PORTD |= (1<<E);
lcd_shalf(0x30);
PORTD &= ~(1<<E);
_delay_ms(100);
PORTD |= (1<<E);
lcd_shalf(0x20);
PORTD &= ~(1<<E);
_delay_ms(100);
lcd_write_cmd( LCDC_FUNC|LCDC_FUNC4B|LCDC_FUNC2L|LCDC_FUNC5x7 );
lcd_write_cmd( LCDC_ONOFF|LCDC_CURSOROFF );
lcd_write_cmd( LCDC_ONOFF|LCDC_DISPLAYON );
lcd_write_cmd( LCDC_ENTRY|LCDC_ENTRYR );
lcd_cls();
}
void lcd_str(char * str) //Wyswietlanie
{
while ( * str) lcd_write_data( * str++);
}[/syntax]
Plik nagłówkowy wyswietlacza:
[syntax=c]/*
* lcd_init.h
*
* Created on: 26 wrz 2015
* Author: Jacek
*/
#ifndef LCD_INIT_H_
#define LCD_INIT_H_
#define E PD0
#define RW PD1
#define RS PD2
// Komendy sterujące
#define LCDC_CLS0x01
#define LCDC_HOME0x02
#define LCDC_ENTRY0x04
#define LCDC_ENTRYR0x02
#define LCDC_ENTRYL0
#define LCDC_MOVE0x01
#define LCDC_ONOFF0x08
#define LCDC_DISPLAYON0x04
#define LCDC_CURSORON0x02
#define LCDC_CURSOROFF0
#define LCDC_BLINKON0x01
#define LCDC_SHIFT0x10
#define LCDC_SHIFTDISP0x08
#define LCDC_SHIFTR0x04
#define LCDC_SHIFTL0
#define LCDC_FUNC0x20
#define LCDC_FUNC8B0x10
#define LCDC_FUNC4B0
#define LCDC_FUNC2L0x08
#define LCDC_FUNC1L0
#define LCDC_FUNC5x100x04
#define LCDC_FUNC5x70
#define LCDC_SET_CGRAM0x40
#define LCDC_SET_DDRAM0x80
void lcd_init(void);// WŁĄCZONA na stałe do kompilacji
void lcd_cls(void);// WŁĄCZONA na stałe do kompilacji
void lcd_str(char * str);
#endif /* LCD_INIT_H_ */[/syntax]
i main:
[syntax=c]/*
* main.c
*
* Created on: 26 wrz 2015
* Author: Jacek
*/
#include <avr/io.h>
#include <avr/interrupt.h>
#include "lcd_init.h"
char tab[] = {"Napis"};
int main(void)
{
DDRD |= (1<<PD5);
PORTD |= (1<<PD5);
lcd_init();
lcd_str(tab);
while(1);
}[/syntax]Statystyki: Napisane przez shark31 — 27 wrz 2015, o 20:21
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