main.c

avr单片机与flash存储器通信程序,调试通过,希望对大家有所帮助.

#include <iom8515v.h>
#include <macros.h>
#include <stdio.h>
#include"ForATmega8515.h"

#define SomeNop   NOP();NOP();NOP();NOP();NOP();NOP();\
				  NOP();NOP();NOP();NOP();NOP();NOP();\
				  NOP();NOP();NOP();NOP();NOP();NOP();

#define 	C0			0x04
#define 	C1			0x08	
#define 	C2			0x10
#define 	R0			0x40
#define 	R1			0x80 
///////////////////////////////
uchar leddata=0;
uchar left=0;
uchar right=0;
uchar lcdindex=0;
unsigned char ledflag=0;
unsigned char shuflag=0;
unsigned char lcdflag=0;
uchar index=0;
uchar key,temp;
uchar const str[]={"0123456789ABCDEF"};
uchar const line[]={0,2,4,6,8,10,12,14,
	  				0,2,4,6,8,10,12,14};//关
uchar const pic1[]={0x18,0x18,0x99,0xDB,0x7E,0x3C,0x18,0x00};
///////////////////////////////
void delay(uint ticks);
void display();
/////////LCD///////////
void writedata(uchar lcddata);
void writecom(uchar lcddata);
void writeline(uchar x,uchar const *pt);
void initlcd();
//////////////////////////////
uchar GetKey(void);
/////////////////////////////
void main()
{
 init_devices();
 initlcd();
 printf("-----------Test For ATMega8515--------------\n");
 while(1)
 {
  display();
  if(ledflag){leddata++;ledflag=0;  if(index++==7)index=0;}
  if(shuflag){if(left++==9)left=0;shuflag=0;}
  if(lcdflag){if(lcdindex++==16)lcdindex=0;writeline(lcdindex,str);lcdflag=0;}
  if(lcdindex==16)PORTD&=~BEEL;
  else PORTD|=BEEL;
///////////////////////////////////
  temp=GetKey();
  key=temp;
  if((key&0x10)!=0)
  {
	  if((temp&0x01)==0)right=1;
	  else if((temp&0x02)==0)right=3;
	  else if((temp&0x04)==0)right=5;
  }
  else if((key&0x20)!=0)
  {
	  if((temp&0x01)==0)right=2;
	  else if((temp&0x02)==0)right=4;
	  else if((temp&0x04)==0)right=6;
  }
/////////////////////////////////////
 }
 

}
//////////////////////////////
void delay(uint ticks)
{
 uchar x;
 for(;ticks!=0;ticks--)for(x=100;x!=0;x--); 
}

void display()
{
 uchar i;
 PORTA=~leddata;
 PORTC&=~LED;
 delay(1);
 PORTC|=LED;
///////////
 PORTA=Tab[left];
 PORTC&=~SEG0;
 delay(1);
 PORTC|=SEG0;
/////////////////
 PORTA=Tab[right];
 PORTC&=~SEG1;
 delay(1);
 PORTC|=SEG1;
//////////////////
 for(i=0;i!=8;i++)
 {

  PORTB|=0x01;
  SPDR=pic1[i];
  SomeNop
  PORTB&=0xf1;
  PORTB|=line[i+index];
  PORTB&=~0x01;
  delay(1); 
 }
}

/////////////////LCD///////////////////////
///////////////////////////////
void writedata(uchar lcddata)
{
// E=1;
 PORTC|=E;
// RS=1;
 PORTC|=RS;
// RW=0;
 PORTA=lcddata;
// E=0;
 PORTC&=~E;
 delay(1);
}
/////////////////////////////////
void writecom(uchar lcddata)
{
// E=1;
 PORTC|=E;
// RS=0;
 PORTC&=~RS;
// RW=0;
 PORTA=lcddata;
// E=0; 
 PORTC&=~E;
 delay(1);
}

void writeline(uchar x,uchar const *pt)
{
 if(x==0)
 {
  writecom(0x01);
  writecom(0x80);
 }
 else
 {
  writedata(pt[x-1]);
 }
}

///////////////////////////////////
void initlcd()
{
 writecom(0x01);
 writecom(0x38);
 writecom(0x0f);
 writecom(0x06);
 writecom(0x01);
 writecom(0x80);
}
///////////////////////////////////




//////////////////////////////////
uchar GetKey(void)
{
 uchar key;
 uchar temp;
 //temp的高4位是按下的列
 //temp低4位是按下的行
 DDRD&=~(C0+C1+C2);//输
 DDRD|=R0+R1;//输
 PORTD&=~(R0+R1);
 key=PIND;
 key>>=2;
 key&=0x07;
 if(key!=0x07)
 {
	  delay(1);
	  key=PIND;
	  key>>=2;
	  key&=0x07;
	  if(key!=0x07) 
		  {
		   //确实有键按下
			temp=key;
 			DDRD|=C0+C1+C2;//输出
 			DDRD&=~(R0+R1);//输入
			PORTD|=C0+C1+C2;
			key=PIND;
			key>>=2;
			key&=0x30;
			temp+=key;
			return temp;
		   }
 }
  return 0xff;

}