AVR128的程序——12864液晶显示

#define uint unsigned int

#define uchar unsigned char

#define psbset DDRB |= (1<4)

#define psbset PORTB |= (1<4)

#define psbclr PORTB &=~(1<4)

#define rsout DDRB |= (1<5)

#define rsset PORTB |=(1<5)

#define rsclr PORTB &=~(1<5)

#define rwout DDRB |= (1<6)

#define rwset PORTB |= (1<6)

#define rwclr PORTB &= ~(1<6)

#define enout DDRB |= (1<7)

#define enset PORTB |= (1<7)

#define enclr PORTB &= ~(1<7)

unsigned char table[]="做我女朋友吧！";

void mcu_init(void);

void Delayus(uint US)

{

uint i;

US=US*5/4;

for( i=0;i

}

void Delayms(uint MS)

{

uint i,j;

for( i=0;i

for(j=0;j<1141;j++);

}

void write_12864com(uchar com)

{

rwclr;

rsclr;

Delayus(500);

PORTA=com;

enset;

Delayus(1000);

enclr;

Delayus(1000);

}

void write_12864dat(uchar dat)

{

rwclr;

rsset;

Delayus(500);

PORTA=dat;

enset;

Delayus(1000);

enclr;

Delayus(1000);

}

void init12864lcd(void)

{

Delayms(500);

write_12864com(0x30);

Delayus(500);

write_12864com(0x30);

Delayus(500);

write_12864com(0x0f);

Delayus(500);

write_12864com(0x01);

Delayms(25);

write_12864com(0x06);

Delayus(2500);

write_12864com(0x0c);

Delayus(500);

}

void display(void)

{

uchar i;

write_12864com(0x80);

for(i=0;i<14;i++)

{

write_12864dat(table[i]);

Delayms(50);

}

}

void main(void)

{

mcu_init();

init12864lcd();

while(1)

{

display();

while(1);

}

}

void mcu_init(void)

{

DDRA = 0XFF;

PORTA = 0XFF;

DDRC = 0XFF;

PORTC = 0XFF;

DDRF |= 0X0E;

PORTF |= 0X0E;

PORTF &= 0xF0;

DDRB |= 0X10;

PORTB |= 0X10;

psbset;

rsout;

rwout;

enout;

}