justhomework/MCU/MCU_7 _LCD12864/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;


const unsigned char Z[] =
{
  /*--  <20><><EFBFBD><EFBFBD>:  <20><>  --*/
  /*--  <20><><EFBFBD><EFBFBD>12;  <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¶<EFBFBD>Ӧ<EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>x<EFBFBD><78>=16x16   --*/
  0x10, 0x60, 0x02, 0x0C, 0xC0, 0x04, 0x04, 0x04, 0x04, 0xFC, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00,

  /*--  <20><><EFBFBD><EFBFBD>:  һ  --*/
  /*--  <20><><EFBFBD><EFBFBD>12;  <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¶<EFBFBD>Ӧ<EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>x<EFBFBD><78>=16x16   --*/
  0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00,

  /*--  <20><><EFBFBD><EFBFBD>:  <20><>  --*/
  /*--  <20><><EFBFBD><EFBFBD>12;  <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¶<EFBFBD>Ӧ<EFBFBD>ĵ<EFBFBD><C4B5><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>x<EFBFBD><78>=16x16   --*/
  0x20, 0x24, 0x24, 0xA4, 0xFE, 0x23, 0x22, 0x20, 0x00, 0xF8, 0x08, 0x08, 0x08, 0xF8, 0x00, 0x00,

};
const unsigned char Z2[] =
{
  0x04, 0x04, 0x7C, 0x03, 0x20, 0x20, 0x20, 0x20, 0x20, 0x3F, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x10, 0x08, 0x06, 0x01, 0xFF, 0x01, 0x06, 0x00, 0x00, 0x3F, 0x10, 0x10, 0x10, 0x3F, 0x00, 0x00
};

void selA()
{
  CSA = 1;
  CSB = 0;
}
void selB()
{
  CSA = 0;
  CSB = 1;
}
void writeData(unsigned char d)
{
  RS = 1;
  RW = 0;
  P1 = d;
  E = 0;
  E = 1;
  delay(3);
  E = 0;
}

void writeCommand(unsigned char d)
{
  RS = 0;
  RW = 0;
  P1 = d;
  E = 0;
  E = 1;
  delay(3);
  E = 0;
}

void lcdInit()
{
  selA();
  writeCommand(0x3f);
  selB();
  writeCommand(0x3f);
  selA();
}

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

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

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

void name(unsigned int i)
{
  unsigned int line = 0;
  while(line < 48)
    {
      setPage(0);
      setY(i);
      writeData(Z[line]);
      setPage(1);
      setY(i);
      writeData(Z2[line++]);
    }
}


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

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 = 0XFF;
  write();
}