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[] =
{
  0x10, 0x60, 0x02, 0x0C, 0xC0, 0x04, 0x04, 0x04, 0x04, 0xFC, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00,
  0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00,
  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 write()
{
  RW = 0;
  E = 0;
  E = 1;
  delay(2);
  E = 0;
}

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);
}

void name(unsigned int line)
{
  unsigned char l = line % 128;
  unsigned int j;

  for(j = l; j < l + 48; j++)
    {
      if(j < 64)
        {
          CSA = 1;
          CSB = 0;
          RS = 0;
          RW = 0;
          P1 = 0xb8 + 0;
          write();
          P1 = 0X40 + j;
          write(); //ҳ0<D2B3><30>j<EFBFBD><6A>A

          RS = 1;
          RW = 0;
          P1 = Z[j - l];
          write();

          RS = 0;
          RW = 0;
          P1 = 0xb8 + 1;
          write();
          P1 = 0X40 + j;
          write(); //ҳ1<D2B3><31>j<EFBFBD><6A>A

          RS = 1;
          RW = 0;
          P1 = Z2[j - l];
          write();
        }
      else if(j < 128)
        {
          CSA = 0;
          CSB = 1;
          RS = 0;
          RW = 0;
          P1 = 0xb8 + 0;
          write();
          P1 = 0X40 + j - 63;
          write(); //ҳ0<D2B3><30>j-63<36><33>B

          RS = 1;
          RW = 0;
          P1 = Z[j - l];
          write();

          RS = 0;
          RW = 0;
          P1 = 0xb8 + 1;
          write();
          P1 = 0X40 + j - 63;
          write(); //ҳ1<D2B3><31>j-63<36><33>B

          RS = 1;
          RW = 0;
          P1 = Z2[j - l];
          write();

        }
      else
      {
					CSA = 1;
					CSB = 0;
					RS = 0;
					RW = 0;
					P1 = 0xb8 + 0;
					write();
					P1 = 0X40 + j - 127;
					write(); //ҳ0<D2B3><30>j-127<32><37>A

          RS = 1;
          RW = 0;
          P1 = Z[j - l];
          write();

          RS = 0;
          RW = 0;
          P1 = 0xb8 + 1;
          write();
          P1 = 0X40 + j - 127;
          write(); //ҳ1<D2B3><31>j-127<32><37>A

          RS = 1;
          RW = 0;
          P1 = Z2[j - l];
          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 miniclear()
{
  unsigned int i, j;
  CSA = 1;
  CSB = 0;
  for(i = 0; i < 2; 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 < 2; 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();
        }
    }
}