justhomework/MCU/Final_Design/display.c

#include <reg52.h>
#include "display.h"
#include "delay.h"


// DB	 P1
// CTL P3

sbit RS = P3 ^ 0;
sbit RW = P3 ^ 1;
sbit E = P3 ^ 2;
sbit CSA = P3 ^ 4;
sbit CSB = P3 ^ 5;


unsigned char sine[] = {32,33,34,36,37,39,40,42,43,44,46,47,48,49,51,52,53,54,55,56,56,57,58,59,59,60,60,61,61,61,61,61,61,61,61,61,61,61,60,60,59,59,58,57,56,56,55,54,53,52,51,49,48,47,46,44,43,42,40,39,37,36,34,33,32,30,29,27,26,24,23,21,20,19,17,16,15,14,12,11,10,9,8,7,7,6,5,4,4,3,3,2,2,2,2,2,2,2,2,2,2,2,3,3,4,4,5,6,7,7,8,9,10,11,12,14,15,16,17,19,20,21,23,24,26,27,29,30};

void write()
{
  RW = 0;
  E = 0;
  E = 1;
  delay(2);
  E = 0;
}

void draw()
{
  unsigned int j;
  CSA = 1;
  CSB = 0;

  for(j = 0; j < 64; j++)
    {

      RS = 0;
      RW = 0;
      P1 = 0xb8 + (sine[j] / 8); //页
      write();
      P1 = 0X40 + j;        //Y
      write();
      RS = 1;
      RW = 0;
      P1 = 1<<(sine[j] % 8);
      write();
    }

  CSA = 0;
  CSB = 1;
  for(j = 0; j < 64; j++)
    {

      RS = 0;
      RW = 0;
      P1 = 0xb8 + (sine[63 + j] / 8); //页
      write();
      P1 = 0X40 + j;        //Y
      write();


      RS = 1;
      RW = 0;
      P1 = 1<<(sine[j+63] % 8);
      write();
    }
}


void clear()
{
  unsigned int i, j;
  CSA = 1;
  CSB = 0;
  for(i = 0; i < 8; i++)
    {
      RS = 0;
      RW = 0;
      P1 = 0xb8 + i;
      write();
      P1 = 0X40;
      write();

      for(j = 0; j < 64; j++)
        {
          RS = 1;
          RW = 0;
          P1 = 0x00;;
          write();
        }
    }
  CSA = 0;
  CSB = 1;
  for(i = 0; i < 8; i++)
    {
      RS = 0;
      RW = 0;
      P1 = 0xb8 + i;
      write();
      P1 = 0X40;
      write();

      for(j = 0; j < 64; j++)
        {
          RS = 1;
          RW = 0;
          P1 = 0x00;
          write();
        }
    }
}
void init()
{
  E = 0;
  RS = 1;
  CSA = 1;
  CSB = 0;
  RS = 0;
  P1 = 0X3F;
  write();

  CSA = 0;
  CSB = 1;
  RS = 0;
  P1 = 0X3F;
  write();
}

void test()
{
  unsigned int i, j;
  CSA = 1;
  CSB = 0;
  for(i = 0; i < 8; i++)
    {
      RS = 0;
      RW = 0;
      P1 = 0xb8 + i;
      write();
      P1 = 0X40;
      write();

      for(j = 0; j < 64; j++)
        {
          RS = 1;
          RW = 0;
          P1 = 0x55;
          write();
        }
    }
  CSA = 0;
  CSB = 1;
  for(i = 0; i < 8; i++)
    {
      RS = 0;
      RW = 0;
      P1 = 0xb8 + i;
      write();
      P1 = 0X40;
      write();

      for(j = 0; j < 64; j++)
        {
          RS = 1;
          RW = 0;
          P1 = 0x55;;
          write();
        }
    }
}


void writeData(unsigned char d)
{
  RS = 1;
  RW = 0;
  P1 = d;
}

void setCommand(unsigned char d)
{
  RS = 0;
  RW = 0;
  P1 = d;
}


void setPage(unsigned char p)
{
  setCommand(0xb8 + p);
}

void setLine(unsigned char p)
{
  setCommand(0xc0 + p);
}

void setY(unsigned char p)
{
  setCommand(0x40 + p);
}