lcd.c

MSP430液晶控制程序

#include "system.h"
#include "lcd.h"
#include "msp430x24x.h"

/*------------------初始化-----------------*/
void init_lcd (void)
{
  RST1;
  PSB0;
  wr_lcd (comm,0x30);  /*30---基本指令动作*/   
  wr_lcd (comm,0x01);  /*清屏，地址指针指向00H*/
  Delay_us(100);
  wr_lcd (comm,0x06);  /*光标的移动方向*/
  wr_lcd (comm,0x0c);  /*开显示，关游标*/
}
/*---------------------------------------*/
void wr_lcd (unsigned int dat_comm,unsigned int content)
{
  unsigned int a,i,j,test;
  Delay_us(50);
  a=content;
  CS1;
  SCLK0;
  STD1;
  for(i=0;i<5;i++)
  {
    SCLK1;
    SCLK0;
  }
  STD0;
  SCLK1;
  SCLK0;
  if(dat_comm)
  {
    STD1;   //data
  }
  else
  {
    STD0;   //command
  }
  SCLK1;
  SCLK0;
  STD0;
  SCLK1;
  SCLK0;
  for(j=0;j<2;j++)
  {
    for(i=0;i<4;i++)
    {
      a=a<<1;
      test=a&0x100;
      if(test==0x100)
      {
        STD1;
      }
      else if(test==0x00)
      {
        STD0;
      }
      SCLK1;
      SCLK0;
    }
    STD0;
    for(i=0;i<4;i++)
    {
      SCLK1;
      SCLK0;
    }
  }
}

/*---------------显示汉字或字符----------------*/
void chn_disp (unsigned char*chn)
{
  unsigned int i,j;
  wr_lcd (comm,0x30);
  wr_lcd (comm,0x80);
  for (j=0;j<4;j++)
  {
    for (i=0;i<16;i++)
    wr_lcd (dat,chn[j*16+i]);
  }
}

void lat_disp (unsigned int data1,unsigned int data2)
{
  unsigned int i,j,k,x;
  x=x1;
  for(k=0;k<2;k++)
  {
    for(j=0;j<16;j++)
    {
      for(i=0;i<8;i++)
      {
        wr_lcd (comm,0x34);
        wr_lcd (comm,y+j*2);
        wr_lcd (comm,x+i);
        wr_lcd (comm,0x30);
        wr_lcd (dat,data1);
        wr_lcd (dat,data1);
      }
      for(i=0;i<8;i++)
      {
        wr_lcd (comm,0x34);
        wr_lcd (comm,y+j*2+1);
        wr_lcd (comm,x+i);
        wr_lcd (comm,0x30);
        wr_lcd (dat,data2);
        wr_lcd (dat,data2);
      }
    }
    x=x2;
  }
  wr_lcd (comm,0x36);
}
/*-----------------------------------------------*/
//当data1=0xff,data2=0xff时,在x0,y0处反白显示16xl*yl.
void con_disp (unsigned int data1,unsigned int data2,unsigned int x0,unsigned int y0,unsigned int xl,unsigned int yl)
{
  unsigned int i,j;
  for(j=0;j<yl;j++)
  {
    for(i=0;i<xl;i++)
    {
      wr_lcd (comm,0x34);
      wr_lcd (comm,y0+j);
      wr_lcd (comm,x0+i);
      wr_lcd (comm,0x30);
      wr_lcd (dat,data1);
      wr_lcd (dat,data2);
    }
  }
  wr_lcd (comm,0x36);
}
/*--------------清DDRAM------------------*/
void clrram (void)
{
  wr_lcd (comm,0x30);
  wr_lcd (comm,0x01);
  Delay_us (180);
}