lcd1602显示._c

ICC mega8例子

//ICC-AVR application builder : 2009-3-12 16:02:34
// Target : M8
// Crystal: 8.0000Mhz

#include <iom8v.h>
#include <macros.h>

void port_init(void)
{
 PORTB = 0x00;
 DDRB  = 0x00;
 PORTC = 0x00; //m103 output only
 DDRC  = 0x00;
 PORTD = 0x00;
 DDRD  = 0x00;
}

//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_init();

 MCUCR = 0x00;
 GICR  = 0x00;
 TIMSK = 0x00; //timer interrupt sources
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}

/*************************************************************************
用    途:LCD1602显示
Taget   :mega8
crystal :8M
介    绍:
入口参数:
出口参数:
*************************************/
const unsigned char tab1[]=" I LIKE AVR!!!  ";
const unsigned char tab2[]=" www.cumt.edu.cn ";
//延时程序
void delay(unsigned int ms)
{
 	 unsigned int i,j;
	 for(i=0;i<ms;i++)
	 	{for(j=0;j<200;j++);}
}
//送指令子程序
void com_lcd(unsigned char com)
{
 	 PORTC&=~(1<<PC2);
	 PORTC&=~(1<<PC1);
	 PORTB=com;
	 PORTC|=(1<<PC0);
	 delay(5);
	 PORTC&=~(1<<PC0);
}
//送数据子程序
void data_lcd(unsigned char data)
{
 	 PORTC|=(1<<PC2);
	 PORTC&=~(1<<PC1);
	 PORTB=data;
	 PORTC|=(1<<PC0);
	 delay(5);
	 PORTC&=~(1<<PC0);
}
//初始化
void LCD1602_init()
{
 	 DDRB=0XFF;
	 DDRC|=0X07;
	 PORTC&=~(1<<PC0);
	 
	 com_lcd(0x38);//5*7,2行显示
	 delay(5);
	 com_lcd(0x01);	//清屏
	 delay(5);
	 com_lcd(0x0C);//文字不动，光标自动右移
	 delay(5);
	 com_lcd(0x06);//开显示
	 delay(5);
}
//清屏
void LCD1602_clear()
{
 	 com_lcd(0x01);	//清屏
	 delay(5);
}
//定位x,y(x-列,y-行)
void LCD1602_goxy(unsigned char line,unsigned char row)
{
 if (row==0)
 	line+=0x81;
 else
 	line+=0xc0;
 com_lcd(line);//第二行首地址
 delay(5);
}
//显示字符串
LCD1602_print(char *str)
{
 while(*str)
 {
  data_lcd(*str);
  delay(10);
  str++;
 }
}
//显示一个二位十位数
LCD1602_printD(unsigned char n)
{
 data_lcd(n/10+0x30);
 delay(10);
 data_lcd(n%10+0x30);
 delay(10);
}
//**************************************************************************	

void main()
{
 unsigned char i=23;
 port_init();
 init_devices();
 
 LCD1602_init();
 LCD1602_goxy(2,0);
 LCD1602_print("xiaozhiyong");
 LCD1602_goxy(2,1);
 LCD1602_printD(i);
 
 while(1)
 {
  ;
 }
}