19264.c

三星KS0108液晶驱动控制器C语言程序

//  CA19264A  Demo Program
//***************************************************************************
//*  Create by :liujun     2005.02.28                                       *
//***************************************************************************
//连线表:  CPU=89C52                                                        *
//RS=P3.0     R/W=P3.1     E=P3.2     CS1=P3.3     CS2=P3.4                 *
//SysClock=12MHz           DB0-DB7=P1.0-P1.7       /Reset=InBoard           *
//***************************************************************************

＃include<reg52.h>
＃include<stdlib.h>
＃include<intrins.h>
＃include<stdio.h>

/********************引脚定义********************/

sbit RS  =P3^0; //数据指令
sbit RW  =P3^1; //读写
sbit E   =P3^2; //使能
sbit CS1 =P3^3; //1片选
sbit CS2 =P3^4; //2片选

unsigned char Page; //页 地址
unsigned char Col; //列 地址

unsigned char code BMP1[];
unsigned char code BMP2[];

void Delay(unsigned int MS);
void wtcom(void);

/***************************/
/*检查Busy                 */
/***************************/
void BusyL(void)
{
 CS1= 0;
 CS2= 0;
 wtcom();
}

void BusyM(void)
{
 CS1= 0;
 CS2= 1;
 wtcom();
}

void BusyR(void)
{
 CS1= 1;
 CS2= 0;
 wtcom();
}

void wtcom(void)
{
 RS = 0;  //指令
 RW = 1;
 P1 = 0xFF; //输出0xff以便读取正确
 E  = 1;
 _nop_();
 while(P1 & 0x80); //Status Read Bit7 = BUSY
 E  = 0;
 _nop_();
}

/********************************************************/
/*根据设定的坐标数据，定位LCM上的下一个操作单元位置 */
/********************************************************/
void Locatexy(void)
{
 unsigned char x,y;
 switch (Col&0xc0) /*  col.and.0xC0 */
 {   /*条件分支执行  */
  case 0: {BusyL();break;}/*左区 */
  case 0x40: {BusyM();break;}/*中区 */
  case 0x80: {BusyR();break;}/*右区 */
 }
 x = Col&0x3F|0x40; /* col.and.0x3f.or.Set Y Address*/
 y = Page&0x07|0xB8; /* row.and.0x07.or.set Page */
 wtcom();  /* waitting for enable */
 RS = 0;   //指令
 RW = 0;   //写
 P1 = y;   //设置页面地址
 E  = 1;
 _nop_();
 E  = 0;
 _nop_();
 wtcom();  /*  waitting for enable */
 RS = 0;
 RW = 0;
 P1 = x;   //设置列地址
 E  = 1;
 _nop_();
 E  = 0;
 _nop_();
}

/***************************/
/*写指令                   */
/***************************/
void WriteCommandL( unsigned char CommandByte )
{
 BusyL();
 P1 = CommandByte;
 RS = 0;  //指令
 RW = 0;
 E  = 1;
 _nop_();
 E  = 0;
 _nop_();
}

void WriteCommandM( unsigned char CommandByte )
{
 BusyM();
 P1 = CommandByte;
 RS = 0;  //指令
 RW = 0;
 E  = 1;
 _nop_();
 E  = 0;
 _nop_();
}

void WriteCommandR( unsigned char CommandByte )
{
 BusyR();
 P1 = CommandByte;
 RS = 0;  //指令
 RW = 0;
 E  = 1;
 _nop_();
 E  = 0;
 _nop_();
}

/***************************/
/*读数据                   */
/***************************/
unsigned char ReadData( void )
{
 unsigned char DataByte;
 Locatexy(); /*坐标定位，返回时保留分区状态不变 */
 RS = 1;  /*数据输出*/
 RW = 1;  /*读入  */
 P1 = 0xFF;  //输出0xff以便读取正确
 E  = 1;  /*读入到LCM*/
 _nop_();
 DataByte = P1; /*数据读出到数据口P1 */
 E  = 0;
 _nop_();
 return DataByte;
}

/***************************/
/*写数据                   */
/***************************/
void WriteData( unsigned char DataByte )
{
 Locatexy(); /*坐标定位，返回时保留分区状态不变 */
 RS = 1;  /*数据输出*/
 RW = 0;  /*写输出  */
 P1 = DataByte; /*数据输出到数据口 */
 E  = 1;  /*写入到LCM*/
 _nop_();
 E  = 0;
 _nop_();
}

void LcmClear( void )
{
 Page = 0;
 Col  = 0;
 for(Page=0;Page<8;Page++)
  for(Col=0;Col<192;Col++)
   WriteData(0);
}

void LcmInit( void )
{
 WriteCommandL(0x3f); //开显示
 WriteCommandM(0x3f);
 WriteCommandR(0x3f);

 WriteCommandL(0xc0); //设置起始地址=0
 WriteCommandM(0xc0);
 WriteCommandR(0xc0);

 WriteCommandL(0x3f); //开显示
 WriteCommandM(0x3f);
 WriteCommandR(0x3f);

 LcmClear();
 Col = 0;
 Page= 0;
 Locatexy();
}

void LcmPutDots( unsigned char DotByte )
{
 Page = 0;
 Col  = 0;
 for(Page=0;Page<8;Page++)
 {
  for(Col=0;Col<192;Col++)
  {
   WriteData( DotByte );
   DotByte = ~DotByte;
  }
 }
}

void LcmPutBMP( unsigned char *puts )
{
 unsigned int X=0;
 Page = 0;
 Col  = 0;
 for(Page=0;Page<8;Page++)
 {
  for(Col=0;Col<192;Col++)
  {
   WriteData( puts[X] );
   X++;
  }
 }
}

void LcmReverseBMP( void )
{
 unsigned char temp;
 Page = 0;
 Col  = 0;
 for(Page=0;Page<8;Page++)
 {
  for(Col=0;Col<192;Col++)
  {
   temp = ReadData(); //空读一次
   temp = ReadData();
   temp = ~temp;