/*-------------------------------------------------------------------- LPC213X硬件SPI接口LCD19232显示C++代码 HotPower@126.com --------------------------------------------------------------------*/ //__inlineLcdObj::LcdObj(void){  LcdSpiInit();//SPI初始化   LcdInit();} //__inlinevoid LcdObj::LcdSpiInit(void){/* 设置MOSI 和SCK 及SS 为输出，其他为输入 */  LCDPORT->IODIR |= (1 << LCDCS);  LCDPORT->IOCLR = (1 << LCDCS);/*  LCDPORT->IODIR |= (1 << LCDSCK)| (1 << LCDSID);//设置输出方式  LCDPORT->IOSET = (1 << LCDSCK) | (1 << LCDSID);*/  POWER->P_CONP |= (1 << PCSPI0);  PINSEL->PIN_SEL0 |= ((P0_4_SCK0 << P0_4_PINSEL) | (P0_6_MOSI0 << P0_6_PINSEL));//  SPI->SPI_SPCCR = 0x168;              // 设置SPI时钟分频  SPI->SPI_SPCCR = 0x52;              // 设置SPI时钟分频  SPI->SPI_SPCR  =            (1 << CPHA) |    // CPHA = 0, 数据在SCK 的第一个时钟沿采样        (1 << CPOL) |    // CPOL = 1, SCK 为低有效       (1 << MSTR) |    // MSTR = 1, SPI 处于主模式       (0 << LSBF) |    // LSBF = 0, SPI 数据传输MSB (位7)在先       (0 << SPIE);    // SPIE = 0, SPI 中断被禁止} //__inlinevoid LcdObj::LcdInit(void){/*---------------------------------------------------     LCD模块上电等待延时 ----------------------------------------------------*/   LcdClearBuffer();  LcdSendCommand(0x20);//发送4位控制命令 //  LcdSendCommand(0x30);//发送8位控制命令//与8位4位无关!!!   LcdSendCommand(0x02);//发送位址归位命令，设定DDRAM位址计数器为0   LcdSendCommand(0x04);//发送进入点命令   LcdSendCommand(0x0c);//发送开显示关光标命令   LcdSendCommand(0x01);//发送清除显示命令   LcdSendCommand(0x80);//发送设定DDRAM地址0x00命令 } //__inlinevoid LcdObj::LcdSend(char cData){/*unsigned int i;  _delay_loop_(1);  for (i = 0; i < 8; i ++) {    _delay_loop_(1);    LCDPORT->IOCLR = (1 << LCDSCK);    _delay_loop_(1);    if (cData & 0x80) {//MSB最高位为1时      LCDPORT->IOSET = (1 << LCDSID); } else {      LCDPORT->IOCLR = (1 << LCDSID); }    _delay_loop_(1); cData <<= 1;    LCDPORT->IOSET = (1 << LCDSCK);    _delay_loop_(1);  } *///  SPI->SPI_SPDR = cData;                        //发送数据（相当于51的SBUF = DATA）  while(!(SPI->SPI_SPSR & (1 << SPIF)));  // 等待SPIF置位，即等待数据发送完毕//} /*--------------------------------------------------------    发送8位LCD控制命令--------------------------------------------------------*///__inlinevoid LcdObj::LcdSendCommand(char cCommand){/*--------------------------------------------------------    发送同步脉冲11111 WR(0) RS(0) 0发送顺序从左至右）--------------------------------------------------------*/  LCDPORT->IOSET = (1 << LCDCS);//SS=1，启动SPI  LcdSend(0xf8);//发送LCD控制命令  LcdSend(cCommand & 0xf0);//发送高4位LCD控制命令  LcdSend(cCommand << 4);//发送低4位LCD控制命令  LCDPORT->IOCLR = (1 << LCDCS);//SS=0，关闭SPI  if (cCommand == 0x01) _delay_loop_(160);//1.6mS  else _delay_loop_(72);//st7920要求等待72uS} /*--------------------------------------------------------    发送8位LCD显示数据(LCD19232)--------------------------------------------------------*///__inlinevoid LcdObj::LcdSendData(char cData){/*--------------------------------------------------------    发送同步脉冲11111 WR(0) RS(0) 0发送顺序从左至右）--------------------------------------------------------*/  LCDPORT->IOSET = (1 << LCDCS);//SS=1，启动SPI  LcdSend(0xfa);//发送LCD显示数据  LcdSend(cData & 0xf0);//发送高4位LCD显示数据  LcdSend(cData << 4);//发送低4位LCD显示数据  LCDPORT->IOCLR = (1 << LCDCS);//SS=0，关闭SPI  _delay_loop_(72);//st7920要求等待延时72uS} //__inlinevoid LcdObj::SetLcdDisplayPos(unsigned char row, unsigned char col){  row &= 0x01;//2行汉字  if (col > 24) col = 0;//每行12个汉字24个字符  LcdRow = row;  LcdCol = col;  LcdRowWriteEnable[row] = 1;//允许此行刷新汉字显示} //__inlinevoid LcdObj::LcdClearBuffer(void){unsigned char i, j;  for (i = 0;i < 2;i ++) {    for (j = 0;j < 24; j ++) {      LcdBuffer[i][j] = ' ';    }    LcdRowWriteEnable[i] = 1;//允许此行刷新汉字显示  }  LcdRow = 0;  LcdCol = 0;} //__inlinevoid LcdObj::LcdDisplayBuffer(void){unsigned char i, j;  for (i = 0; i < 2; i ++) {//2行汉字    if (LcdRowWriteEnable[i]) {//允许此行刷新汉字显示      LcdSendCommand(0x80 + (i & 1) * 16 + (i >> 1) * 8);//移动光标      for (j = 0; j < 16; j ++) {//每行前8个汉字16个字符        LcdSendData(LcdBuffer[i][j]);//刷新显示字符      }      LcdSendCommand(0x80 + (i & 1) * 16 + ((i + 2) >> 1) * 8);//移动光标      for (j = 16; j < 24; j ++) {//每行后4个汉字8个字符        LcdSendData(LcdBuffer[i][j]);//刷新显示字符      }   LcdRowWriteEnable[i] = 0;//过后不允许此行刷新汉字显示 }  }} //__inlinevoid LcdObj::LcdDisplay(const char * string){  while(*string) {    LcdBuffer[LcdRow][LcdCol ++] = *string ++;  }} //__inline//(不敢加inline)//__forceinlinevoid LcdObj::LcdDisplay(unsigned int Val, unsigned char size1, signed char size0){char str[7], *ptr;unsigned char i;  ptr = str + 5;  if (size0 > 0) {//有小数    for (i = 0; i < 3; i ++) {   *ptr -- = (Val % 10) + '0';   Val /= 10;    }    ptr[size0 + 1] = 0;    *ptr -- = '.';  }  else {    *ptr -- = 0;  }  for (i = 0; i < size1; i ++) {    if (i && (Val == 0)) {   if (size0 < 0) {     *ptr -- = '0';   }   else {     *ptr -- = ' ';   }    } else *ptr -- = (Val % 10) + '0'; Val /= 10;  }  LcdDisplay(ptr + 1);}

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