20160316-LCD출력

LCD에 글자 출력하기

MAKEFILE 소스 수정

# List C source files here. (C dependencies are automatically generated.)

SRC = $(TARGET).c lcd.c

LCD_A출력.7z

make하기전에 각 소스의 마지막 줄은 비워둘 것

LCD에 A 출력

lcd.h

#ifndef __LCD_H__ #define __LCD_H__ #include "main.h" #define RS 4 #define RW 5 #define EN 6 #define BUS PORTA #define CTL PORTC //control line void LCD_Init(void); void LCD_Inst(unsigned char ucInst); void LCD_Data(unsigned char ucData); void LCD_STR(const char* cString); #define LCD_CLR 0x01 #define LCD_HOME 0x02 #define LCD_ENT 0x06 //S:0Shift OFF, I/D:1 Increase Mode #define LCD_DSP 0x0f //D:1 Display On C:1 Cursor on B:1 Blink On #define LCD_CUR 0x14 //S/C:0 Shift Cursor OFF R/L:1 #define LCD_FUNC 0x38 //DL:1 Data length 8bit N:1 2Line F:0 Font 5X8 #endif //__LCD_H__

lcd.c

#include "lcd.h" void LCD_Init(void) { DDRC = (1<<RS)|(1<<RW)|(1<<EN); DDRA = 0xff; //C3개, A8개 연다. CTL = (0<<RS)|(0<<RW)|(0<<EN); BUS = 0x00; LCD_Inst(LCD_FUNC); LCD_Inst(LCD_DSP); LCD_Inst(LCD_ENT); LCD_Inst(LCD_CUR); LCD_Inst(LCD_CLR); LCD_Inst(LCD_HOME); } void LCD_Inst(unsigned char ucInst) { volatile unsigned int uiCnt; CTL = CTL & ~(1<<RS); CTL = CTL & ~(1<<RW); CTL = CTL & ~(1<<EN); BUS = ucInst; for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //A for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //B CTL = CTL | (1<<EN); for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //C CTL = CTL & ~(1<<EN); for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //D for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //E } void LCD_Data(unsigned char ucData) { volatile unsigned int uiCnt; CTL = CTL | (1<<RS); CTL = CTL & ~(1<<RW); CTL = CTL & ~(1<<EN); BUS = ucData; for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //A //CTL = CTL | (1<<RS); //CTL = CTL & ~(1<<RW); //CTL = CTL & ~(1<<EN); //BUS = ucData; for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //B //CTL = CTL | (1<<RS); //CTL = CTL & ~(1<<RW); CTL = CTL | (1<<EN); //BUS = ucData; for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //C //CTL = CTL | (1<<RS); //CTL = CTL & ~(1<<RW); CTL = CTL & ~(1<<EN); //BUS = ucData; for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //D //CTL = CTL | (1<<RS); //CTL = CTL & ~(1<<RW); //CTL = CTL & ~(1<<EN); //BUS = ucData; for(uiCnt = 0; 30000>uiCnt; ++uiCnt); //E } void LCD_STR(const char* cString) { while(0!=*cString) { LCD_Data(*cString); ++cString; } }

main.h

#ifndef __MAIN_H__ #define __MAIN_H__ void Init(void); void Port_Init(void); void INT_Init(void); #define PINA (*((volatile unsigned char *)0x20)) #define DDRA (*((volatile unsigned char *)0x21)) #define PORTA (*((volatile unsigned char *)0x22)) #define PINC (*((volatile unsigned char *)0x26)) #define DDRC (*((volatile unsigned char *)0x27)) #define PORTC (*((volatile unsigned char *)0x28)) #define EICRA (*((volatile unsigned char *)0x69)) #define EICRB (*((volatile unsigned char *)0x6A)) #define EIMSK (*((volatile unsigned char *)0x3D)) #define SREG (*((volatile unsigned char *)0x5F)) #define INT7 7 #define INT6 6 #define INT5 5 #define INT4 4 #define INT3 3 #define INT2 2 #define INT1 1 #define INT0 0 #define ISC7 6 #define ISC6 4 #define ISC5 2 #define ISC4 0 #define ISC3 6 #define ISC2 4 #define ISC1 2 #define ISC0 0 #define sei() __asm__ __volatile__ ("sei" ::) #define sleep() __asm__ __volatile__ ( "sleep" "\n\t" :: ) void __vector_1(void) __attribute__((signal, used, externally_visible)); void __vector_2(void) __attribute__((signal, used, externally_visible)); #endif //__MAIN_H__

main.c

#include "main.h" #include "lcd.h" int main(void) { LCD_Init(); LCD_STR("TEST"); while(1) { } return 0; }

LCD에 TEST 출력