ATMEGA USART-C# App 연동

128usart.7z

main.c

SeialTest (3).7z

---------------------------------

SeialTest.7z

#include <avr/io.h>

#include <util/delay.h>

#define  CLR   0x01      //Clear Display 명령

#define  HOME  0x02      //Return Home 명령 

#define  FNC   0x38      //Function Set 명령 0b00111000

                //Data Length = 8bit. 행수 2행, 문자 폰트 5x8

#define CTL PORTL

#define DB PORTD

#define    RXC          7

void uart0_init(void)

{

UCSR0A = 0x00;

  UCSR0B = 0x18; //Enable transmitter

  UCSR0C = 0X06;        // No psrity, 1stop bit, 8bit data

  UBRR0L = 0x67; //set baud rate lo 16Mhz baud rate 9600!!

  UBRR0H = 0x00; //set baud rate hi

}

unsigned char USART_Receive(void)

{

/* Wait for data to be received */

while(!(UCSR0A &(1<<RXC)))

;

/* Get and return received data from buffer */

return UDR0;

}

void LCD_PortSetting(void)

{

  DDRD = 0xFF;        //data bus line

  DDRL = 0xFF;        //control line (0~2 제어핀 사용)

  //D0: RS ,D1: R/W ,D2: EN

}

void IR_Write(unsigned char Data)  

{

  CTL &= 0xFC;    //RS = 0, Write Enable

  _delay_us(1);    //Enable 까지 최소 대기 시간 40ns

  CTL |= 0x04;    //Enable 활성화

  _delay_us(1);    //

  DB = Data;    //Data

  _delay_us(1);

  CTL = 0b00000010;  //Disable, Read Mode  

}

void DR_Write(unsigned char Data)

{

  CTL = 0x01;    //RS = 1, Write Enable

  _delay_us(1);    //Enable 까지 최소 대기 시간 40ns

  CTL |= 0x04;    //Enable 활성화

  _delay_us(1);    //

  DB = Data;    //Data

  _delay_us(1);

  CTL = 0b00000010;  //Disable, Read Mode  

}

void LCD_Char(unsigned char ucChar)

{

  _delay_ms(1); // 명령어 쓰기 전 일정 시간 지연, Busy Flage 확인 대용

  DR_Write(ucChar);  

}

void LCD_Position(unsigned char ucCol, const char ucRow)

{

    IR_Write(0x80 | (ucRow + ucCol * 0x40));

}

void LCD_String(unsigned char ucLine,unsigned char ucRow, const char* ccString)        //    문자열 출력 함수

{                                                    // ucPosition 값에 따라 LCD_Position 값이 달라짐

    LCD_Position(ucLine, ucRow);

    while(*ccString != 0)                            //    *ccString이 null을 가리킬때까지

    {

        LCD_Char(*ccString);

        ccString++;                                    //    문자열의 주소값이 자료형만큼 증가

        if(*ccString <= 0x0F)

        {

            LCD_Position(1,0);

            _delay_ms(2);

        }

    }

}

void LCD_drive()

{

  _delay_ms(50);

  IR_Write(FNC);

  _delay_ms(5);

  IR_Write(FNC);

  _delay_us(100);

  IR_Write(FNC);

  _delay_ms(2);

  IR_Write(0x0E); // DDD RAM내용 표시, 커서 ON, 커서 깜빡임 OFF

  _delay_ms(2);  

  IR_Write(CLR); // Display Clear

  _delay_ms(30);

  IR_Write(0x06); // Entry Mode Set, 커서위치를 오른쪽으로 증가

  _delay_ms(2);

}

void LCD_Usart()

{

int cnt=0;

LCD_Delete();

_delay_ms(2);

LCD_Position(0,0);

while(1)

{

while((UCSR0A&0x80)==0x80)

{

LCD_Char(UDR0);

cnt++;

if(cnt==16)

{

cnt=0;

LCD_Delete();

_delay_ms(2);

}

}

}

}

void LCD_Delete(void)

{

    _delay_ms(1);

    IR_Write(0x01);

}

int main(void)

{

uart0_init();

  LCD_PortSetting();

  LCD_drive();    

  _delay_ms(2);

  DDRB = 0xFF;

PORTB = 0x00;

while(1)

{

LCD_Usart();

}

  return 0;

}

---------------------------------------------------------------------------

#include <avr/io.h>

/////////// USART0 ///////////////////////////////////////////////

#define UDR0 (*((volatile unsigned char*)0xC6))

#define UCSR0A (*((volatile unsigned char*)0xC0))

#define UCSR0B (*((volatile unsigned char*)0xC1))

#define UCSR0C (*((volatile unsigned char*)0xC2))

#define UBRR0L (*((volatile unsigned char*)0xC4))

#define UBRR0H (*((volatile unsigned char*)0xC5))

#define    TXEN         3

#define    RXEN         4

#define    USBS        3

#define    UCSZ0        1

#define    UDRE        5

#define    RXC          7

#define FOSC 16000000 // Clock Speed

#define BAUD 9600 // Serial 

#define MYUBRR FOSC/16l/BAUD-1

void USART_Init(unsigned int ubrr);

void USART_Transmit(unsigned char data);

unsigned char USART_Receive(void);

int main(void)

{

int i;

USART_Init(MYUBRR);

USART_Transmit("T");

DDRB = 0xFF;

PORTB = 0x00;

while(1)

{

switch(USART_Receive())

{

case '1' : 

PORTB = 0xFF;

break;

case '2' :

PORTB = 0x00;

break;

case '3' :

PORTA = 0xFB;

break;

}

}

return 0;

}

void USART_Init(unsigned int ubrr)

{

/* Set baud rate */

UBRR0H = (unsigned char) (ubrr>>8);

UBRR0L = (unsigned char) ubrr;

/* Enable receiver and transmitter */

UCSR0B = (1<<RXEN) | (1<<TXEN);

/* Set frame format : 8data, 1stop bit */

UCSR0C = 3<<UCSZ0;

}

void USART_Transmit(unsigned char data)

{

/* Wait for empty transmit buffer */

while(! (UCSR0A & (1<<UDRE)))

;

UDR0 = data;

}

unsigned char USART_Receive(void)

{

/* Wait for data to be received */

while(!(UCSR0A &(1<<RXC)))

;

/* Get and return received data from buffer */

return UDR0;

}