dis_void.c

ATMEGA8-lcdd在flash 存贮中应用-学习AVR的朋友们挺多的

#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/signal.h>
#include <stdio.h>
#include <avr/eeprom.h>
#include <avr/pgmspace.h>
#include "dis_void.h"
#define lcd_di PA6
#define lcd_rw PA3
#define lcd_e PA4
#define lcd_cs1 PA7
#define lcd_cs2 PA5
#define data_io PORTC


#define uchar unsigned char
#define uint unsigned int
#define sbi(x,y) (x|=(1<<y))
#define cbi(x,y)  (x&=~(1<<y))

/////////////////////
////////
void delay(unsigned int v)
          {
           while(v)v--;
           }

void wcode(unsigned char c_code,unsigned char cs1,unsigned char cs2)
{
if(cs1==0)
   {
   cbi(PORTA,lcd_cs1);
   }
else
   {
   sbi(PORTA,lcd_cs1);
   }
if(cs2==0)
  {
  cbi(PORTA,lcd_cs2);
  }
else
  {
  sbi(PORTA,lcd_cs2);
  }

  cbi(PORTA,lcd_di);
  cbi(PORTA,lcd_rw);
   data_io=c_code;
   cbi(PORTA,lcd_e);
  delay(10);
   sbi(PORTA,lcd_e);
  delay(10);
   cbi(PORTA,lcd_e);
  }

void wdata(unsigned char cdata,unsigned char cs1,unsigned char cs2)
{
if(cs1==0)
   {
   cbi(PORTA,lcd_cs1);
   }
else
   {
   sbi(PORTA,lcd_cs1);
   }
if(cs2==0)
  {
  cbi(PORTA,lcd_cs2);
  }
else
  {
  sbi(PORTA,lcd_cs2);
  }

  sbi(PORTA,lcd_di);
  cbi(PORTA,lcd_rw);
data_io=cdata;
   cbi(PORTA,lcd_e);
  delay(10);
   sbi(PORTA,lcd_e);
  delay(10);
   cbi(PORTA,lcd_e);
  }


void set_startline(unsigned char i)
{
  i=0xc0+i;
  wcode(i,1,1);
  }
void set_adr(unsigned char x,unsigned char y)
{
 x=x+0xb8;y=y+0x40;
 wcode(x,1,1);	   
 wcode(y,1,1);
 }


void dison_off(unsigned char o)
{
  o=o+0x3e;
  wcode(o,1,1);
  }


uchar inva(unsigned char b)
{
uchar v1=0;
uchar v2=0;
char i;
uchar j1=0x80;
uchar j2=0x01;
for(i=7;i>=1;i=i-2)
{
v1=((b<<i)&j1)|v1;
v2=((b>>i)&j2)|v2;
j1=j1>>1;
j2=j2<<1;
}
return(v1|v2);
}


void clr_disp()
    {
   unsigned char clr_i,clr_j;
   for(clr_i=0;clr_i<8;clr_i++)
      {
	   set_adr(clr_i,0);
       for(clr_j=0;clr_j<64;clr_j++)
          {
          wdata(0,1,1);
           }
         }
	}

//////////////////////
////////////////////