lcd1602.i

用isis构建的一个简单的仿真平台

#pragma used+
sfrb UBRR1L=0;
sfrb UCSR1B=1;
sfrb UCSR1A=2;
sfrb UDR1=3;
sfrb OSCCAL=4;
sfrb OCDR=4;
sfrb PINE=5;
sfrb DDRE=6;
sfrb PORTE=7;
sfrb ACSR=8;
sfrb UBRR0L=9;
sfrb UCSR0B=0xa;
sfrb UCSR0A=0xb;
sfrb UDR0=0xc;
sfrb SPCR=0xd;
sfrb SPSR=0xe;
sfrb SPDR=0xf;
sfrb PIND=0x10;
sfrb DDRD=0x11;
sfrb PORTD=0x12;
sfrb PINC=0x13;
sfrb DDRC=0x14;
sfrb PORTC=0x15;
sfrb PINB=0x16;
sfrb DDRB=0x17;
sfrb PORTB=0x18;
sfrb PINA=0x19;
sfrb DDRA=0x1a;
sfrb PORTA=0x1b;
sfrb EECR=0x1c;
sfrb EEDR=0x1d;
sfrb EEARL=0x1e;
sfrb EEARH=0x1f;
sfrw EEAR=0x1e;   
sfrb UBRR0H=0x20;
sfrb UCSR0C=0x20;
sfrb WDTCR=0x21;
sfrb OCR2=0x22;
sfrb TCNT2=0x23;
sfrb ICR1L=0x24;
sfrb ICR1H=0x25;
sfrb ASSR=0x26;
sfrb TCCR2=0x27;
sfrb OCR1BL=0x28;
sfrb OCR1BH=0x29;
sfrw OCR1B=0x28;  
sfrb OCR1AL=0x2a;
sfrb OCR1AH=0x2b;
sfrw OCR1A=0x2a;  
sfrb TCNT1L=0x2c;
sfrb TCNT1H=0x2d;
sfrw TCNT1=0x2c;  
sfrb TCCR1B=0x2e;
sfrb TCCR1A=0x2f;
sfrb SFIOR=0x30;
sfrb OCR0=0x31;
sfrb TCNT0=0x32;
sfrb TCCR0=0x33;
sfrb MCUCSR=0x34;
sfrb MCUCR=0x35;
sfrb EMCUCR=0x36;
sfrb SPMCR=0x37;
sfrb TIFR=0x38;
sfrb TIMSK=0x39;
sfrb GIFR=0x3a;
sfrb GICR=0x3b;
sfrb UBRR1H=0x3c;
sfrb UCSR1C=0x3c;
sfrb SPL=0x3d;
sfrb SPH=0x3e;
sfrb SREG=0x3f;
#pragma used-

#asm
	#ifndef __SLEEP_DEFINED__
	#define __SLEEP_DEFINED__
	.EQU __se_bit=0x20
	.SET power_ctrl_reg=mcucr
	#endif
#endasm

#pragma used+

void delay_us(unsigned int n);
void delay_ms(unsigned int n);

#pragma used-

void lcd_busy(void)
{
DDRA=0x00;                                 
PORTA=0xff;
while(1)
{                                          
PORTC&=~0x04;
PORTC&=~0x01;
PORTC|=0x02;

PORTC|=0x04;                             
if(!(PINA&0x80))break;                
}                                         
DDRA=0xff;  
}

void lcd_wr_cmd(unsigned char cmd)
{
lcd_busy();                               
PORTC&=~0x01;                               
PORTC&=~0x02;
PORTA=cmd;                                
delay_us(50);
PORTC|=0x04;                                 
delay_us(50);                             
PORTC&=~0x04;
}

void lcd_wr_date(unsigned char date)
{
lcd_busy();                               
PORTC|=0x01;                                
PORTC&=~0x02;                               
PORTA=date;
delay_us(50);                             
PORTC|=0x04;
delay_us(50);
PORTC&=~0x04;                                
}

void lcd_init(void)
{
DDRA=0xff;                              
DDRC|=0x07;
lcd_wr_cmd(0x38);                       
delay_ms(30);
lcd_wr_cmd(0x38);                       
lcd_wr_cmd(0x06);                       
lcd_wr_cmd(0x0f);                       
lcd_wr_cmd(0x01);                       
delay_ms(50);
DDRA=0xff;                              
DDRC|=0x07;
}

void lcd_wr_byte(unsigned char addr,unsigned char date)
{
lcd_wr_cmd(0x80+addr);                   
lcd_wr_date(date);                       
delay_ms(10);
}

void lcd_wr_nbyte(unsigned char addr,unsigned char *str,unsigned char len)
{
unsigned char i;
lcd_wr_cmd(0x80+addr);                  
for(i=0;i<len;i++)
{
lcd_wr_date(*str++);                 

}

}

void lcd_wr_str(unsigned char addr,unsigned char *str)
{
lcd_wr_cmd(0x80+addr);                     
while(*str)                                
{
lcd_wr_date(*str++);                   
}

}