Plik HD44780.h
[syntax=c]#ifndef HD44780_H
#define HD44780_H
extern void delay_ms(int ms);/*funkcja generujaca dokladne opoznienia w ms*/
extern void delay_us(int us);/*funkcja generujaca dokladne opoznienia w us*/
#define PORTA_H GPIOB -> BSRRL
#define PORTA_L GPIOB -> BSRRH
#define RS 0x0001//PB0
#define RW 0x0002//PB1
#define E 0x0004//PB2
#define DB4 0x0040//PB6
#define DB5 0x0080//PB7
#define DB6 0x0100//PB8
#define DB7 0x0200//PB9
#define LCD_DB4_DIR GPIOB -> MODER
#define LCD_DB5_DIR GPIOB -> MODER
#define LCD_DB6_DIR GPIOB -> MODER
#define LCD_DB7_DIR GPIOB -> MODER
#define LCD_E_DIR GPIOB -> MODER
#define LCD_RS_DIR GPIOB -> MODER
#define LCD_RW_DIR GPIOB -> MODER
#define LCD_DB4 GPIO_MODER_MODER6_0
#define LCD_DB5 GPIO_MODER_MODER7_0
#define LCD_DB6 GPIO_MODER_MODER8_0
#define LCD_DB7 GPIO_MODER_MODER9_0
#define LCD_E GPIO_MODER_MODER2_0
#define LCD_RS GPIO_MODER_MODER0_0
#define LCD_RW GPIO_MODER_MODER1_0
#define HD44780_CLEAR0x01
#define HD44780_HOME0x02
#define HD44780_ENTRY_MODE0x04
#define HD44780_EM_SHIFT_CURSOR0
#define HD44780_EM_SHIFT_DISPLAY1
#define HD44780_EM_DECREMENT0
#define HD44780_EM_INCREMENT2
#define HD44780_DISPLAY_ONOFF0x08
#define HD44780_DISPLAY_OFF0
#define HD44780_DISPLAY_ON4
#define HD44780_CURSOR_OFF0
#define HD44780_CURSOR_ON2
#define HD44780_CURSOR_NOBLINK0
#define HD44780_CURSOR_BLINK1
#define HD44780_DISPLAY_CURSOR_SHIFT0x10
#define HD44780_SHIFT_CURSOR0
#define HD44780_SHIFT_DISPLAY8
#define HD44780_SHIFT_LEFT0
#define HD44780_SHIFT_RIGHT4
#define HD44780_FUNCTION_SET0x20
#define HD44780_FONT5x70
#define HD44780_FONT5x104
#define HD44780_ONE_LINE0
#define HD44780_TWO_LINE8
#define HD44780_4_BIT0
#define HD44780_8_BIT16
#define HD44780_CGRAM_SET0x40
#define HD44780_DDRAM_SET0x80
void LCD_WriteCommand(unsigned char);
void LCD_WriteData(unsigned char);
void LCD_WriteText(char *);
void LCD_GoTo(unsigned char, unsigned char);
void LCD_Clear(void);
void LCD_Home(void);
void LCD_Initalize(void);
#endif[/syntax]
Plik HD44780.c
[syntax=c]#include "main.h"
#include "HD44780.h"
void _LCD_OutNibble(unsigned char nibbleToWrite)
{
if(nibbleToWrite & 0x01)
PORTA_H = DB4;
else
PORTA_L = DB4;
if(nibbleToWrite & 0x02)
PORTA_H = DB5;
else
PORTA_L = DB5;
if(nibbleToWrite & 0x04)
PORTA_H = DB6;
else
PORTA_L = DB6;
if(nibbleToWrite & 0x08)
PORTA_H = DB7;
else
PORTA_L = DB7;
}
void _LCD_Write(unsigned char dataToWrite)
{
PORTA_H = E;
_LCD_OutNibble(dataToWrite >> 4);
PORTA_L = E;
PORTA_H = E;
_LCD_OutNibble(dataToWrite);
PORTA_L = E;
delay_us(50);
}
void LCD_WriteCommand(unsigned char commandToWrite)
{
PORTA_L = RS;
_LCD_Write(commandToWrite);
}
void LCD_WriteData(unsigned char dataToWrite)
{
PORTA_H = RS;
_LCD_Write(dataToWrite);
}
void LCD_WriteText(char * text)
{
while(*text)
LCD_WriteData(*text++);
}
void LCD_GoTo(unsigned char x, unsigned char y)
{
LCD_WriteCommand(HD44780_DDRAM_SET | (x + (0x40 * y)));
}
void LCD_Clear(void)
{
LCD_WriteCommand(HD44780_CLEAR);
delay_ms(2);
}
void LCD_Home(void)
{
LCD_WriteCommand(HD44780_HOME);
delay_ms(2);
}
void LCD_Initalize(void)
{
unsigned char i;
LCD_DB4_DIR |= LCD_DB4; // Konfiguracja kierunku pracy wyprowadzen
LCD_DB5_DIR |= LCD_DB5; //
LCD_DB6_DIR |= LCD_DB6; //
LCD_DB7_DIR |= LCD_DB7; //
LCD_E_DIR |= LCD_E; //
LCD_RS_DIR |= LCD_RS; //
delay_ms(15); // oczekiwanie na ustalibizowanie sie napiecia zasilajacego
PORTA_L = RS; // wyzerowanie linii RS
PORTA_L = E; // wyzerowanie linii E
for(i = 0; i < 3; i++) // trzykrotne powtórzenie bloku instrukcji
{
PORTA_H = E; // E = 1
_LCD_OutNibble(0x03); // tryb 8-bitowy
PORTA_L = E; // E = 0
delay_ms(5); // czekaj 5ms
}
PORTA_H = E; // E = 1
_LCD_OutNibble(0x02); // tryb 4-bitowy
PORTA_L = E; // E = 0
delay_ms(1); // czekaj 1ms
LCD_WriteCommand(HD44780_FUNCTION_SET | HD44780_FONT5x7 | HD44780_TWO_LINE | HD44780_4_BIT); // interfejs 4-bity, 2-linie, znak 5x7
LCD_WriteCommand(HD44780_DISPLAY_ONOFF | HD44780_DISPLAY_OFF); // wylaczenie wyswietlacza
LCD_WriteCommand(HD44780_CLEAR); // czyszczenie zawartosci pamieci DDRAM
delay_ms(2);
LCD_WriteCommand(HD44780_ENTRY_MODE | HD44780_EM_SHIFT_CURSOR | HD44780_EM_INCREMENT);// inkrementaja adresu i przesuwanie kursora
LCD_WriteCommand(HD44780_DISPLAY_ONOFF | HD44780_DISPLAY_ON | HD44780_CURSOR_OFF | HD44780_CURSOR_NOBLINK); // wlacz LCD, bez kursora i mrugania
}[/syntax]
Plik main.c
[syntax=c]#include "main.h"
#include "hd44780.h"
static volatile int time_ms;
static volatile int time_us;
void Tim3Config()
{
RCC -> APB1ENR |= RCC_APB1ENR_TIM3EN;
TIM3 -> ARR = 1;
TIM3 -> PSC = 20;
TIM3 -> DIER |= TIM_DIER_UIE;
NVIC_EnableIRQ(TIM3_IRQn);
TIM3 -> CR1 |= TIM_CR1_CEN;
}
void Tim2Config()
{
RCC -> APB1ENR |= RCC_APB1ENR_TIM2EN;
TIM2 -> ARR = 1999;
TIM2 -> PSC = 20;
TIM2 -> DIER |= TIM_DIER_UIE;
NVIC_EnableIRQ(TIM2_IRQn);
TIM2 -> CR1 |= TIM_CR1_CEN;
}
void GPIO_config()
{
RCC -> AHB1ENR |= RCC_AHB1ENR_GPIOBEN | RCC_AHB1ENR_GPIODEN;
}
void delay_ms(int ms)/*funkcja generujaca dokladne opoznienia w ms*/
{
time_ms = ms;
TIM2 -> CNT = 0;/*Zerowanie licznika*/
while(time_ms!=0);/*Oczekiwanie na koniec odliczania*/
}
void delay_us(int us)/*funkcja generujaca dokladne opoznienie w us*/
{
time_us = us;
TIM3 -> CNT = 0;
while(time_us!=0);
}
int main()
{
GPIO_config();
Tim2Config();
Tim3Config();
LCD_Initalize();
LCD_GoTo(0,0);
LCD_WriteText("Test1");
while(1)
{
}
}
void TIM2_IRQHandler()
{
if((TIM2 -> SR & TIM_SR_UIF) != 0)
{
TIM2 -> SR &= ~TIM_SR_UIF;
}
if(time_ms!=0) time_ms--;
}
void TIM3_IRQHandler()
{
if((TIM3 -> SR & TIM_SR_UIF) != 0)
{
TIM3 -> SR &= ~TIM_SR_UIF;
}
if(time_us!=0) time_us--;
}[/syntax]
Mógłby ktoś powiedzieć co w programie odpowiada za taki stan rzeczy? Już wielu rzeczy próbowałem ale nic z tego.Statystyki: Napisane przez azorp12 — 9 wrz 2014, o 11:47
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