带显示部分1602子函数

程序实现的功能是标准的16×2字符型液晶模块上显示字符串；

#define Dataport P4OUT //数据口定义
#define DataportDIR P4DIR
#define CommandportDIR P3DIR
#define Commandport P3OUT //命令入口定义 
#define Lcd_Rs BIT5  
#define Lcd_Rw BIT6
#define Lcd_E  BIT7  //RS，RW，E所接具体定义
#define uchar unsigned char
#define uint unsigned int
#define nop _NOP()

void delay(int i);

void Lcd_Write_Command(uchar tempdata){
  Commandport&=~(Lcd_Rs+Lcd_Rw+Lcd_E);
  nop;
  Dataport=tempdata;
  nop; 
  Commandport|=Lcd_E;
  nop;
  nop;
  Commandport&=~Lcd_E;
  delay(1);
}

void Lcd_Write_Data(uchar tempdata){
   Commandport|=Lcd_Rs;
   Commandport&=~Lcd_Rw;
   Commandport&=~(Lcd_Rw+Lcd_E); 
  nop;
  Dataport=tempdata;
  nop;
  Commandport|=Lcd_E;
  nop;
  nop;
  Commandport&=~Lcd_E;
  delay(1);
}
                    
void delay(int i){
  int j,k;
  for(j=0;j<i;j++)
   for(k=0;k<10;k++);
}
/*****************************************
功能：1.液晶初始化程序        
      2.在屏幕上显示table[] table1[]中内容

参数：table[] table1[]  temp
返回值：无

*****************************************/
void Lcd_Init(){
  DataportDIR=0xff;;
  CommandportDIR=Lcd_Rs+Lcd_Rw+Lcd_E;
  Lcd_Write_Command(0x38);//设置显示模式:8位2行5x7点阵
  delay(5);
  Lcd_Write_Command(0x0c);//显示开，光标关，闪烁关
  delay(1);
  Lcd_Write_Command(0x06);//文字不动光标右移
  delay(1);
  Lcd_Write_Command(0x01);//
  delay(50);

   uint temp;
  uchar table[]={" Distance "};     //第一行内容
  uchar table1[]={" Time 00s  "};   //第二行内容
  Lcd_Write_Command(0x80);          //设置第一行起始地址指针
   for (temp=1;temp<10;temp++){
    Lcd_Write_Data(table[temp]);}
  Lcd_Write_Command(0x80+0x40+0x04);//设置第二行起始地址指针
   for (temp=1;temp<10;temp++){
    Lcd_Write_Data(table1[temp]);}

}