EEPW论坛

#include "msp430x14x.h"
#define CPU_F ((double)8000000)
#define delay_us(x) __delay_cycles((long)(CPU_F*(double)x/1000000.0))
#define delay_ms(x) __delay_cycles((long)(CPU_F*(double)x/1000.0))
#define P55 5
#define P56 6
#define P57 7

#define RS_CLR P5OUT &= ~(1 << P55)        //RS置低
#define RS_SET P5OUT |= (1 << P55)         //RS置高

#define RW_CLR P5OUT &= ~(1 << P56)        //RW置低
#define RW_SET P5OUT |= (1 << P56)         //RW置高

#define EN_CLR P5OUT &= ~(1 << P57)        //E置低
#define EN_SET P5OUT |= (1 << P57)         //E置高
#define DataPort      P4OUT                 //P4口为数据口
#define uchar unsigned char
#define uint unsigned int
unsigned char x=0;
unsigned char table[2];
unsigned char table1[]="jiulishi:";
unsigned int number;

//======================写指令=========================//
void write_com(uchar com)
{
RS_CLR;        //RS置低
EN_CLR;        //En置低
DataPort=com;  
delay_ms(1);
EN_SET;        //E置高
delay_ms(2);
EN_CLR;
}

//======================写数据==========================//
void write_data(uchar data)
{
RS_SET;        //RS置高
EN_CLR;
DataPort=data;
delay_ms(1);
EN_SET;
delay_ms(2);
EN_CLR;
}
//=======================================================//
//add1为1602显示的行选择切值为1或2)，add2为行的位选择，shu为要显示的数；
void write_shu(uchar add1,uchar add2, uchar shu)
{
  uchar shi,ge;
  shi=shu/10;
  ge=shu%10;
    switch(add1)
    {
    case 1:{
            write_com(0x80+add2);
            write_data(0x30+shi);//注此处若要显示3为可再加write_data(0x30+bai);
            write_data(0x30+ge);
           }
           break;
    case 2:{
            write_com(0x80+0x40+add2);
            write_data(0x30+shi);
            write_data(0x30+ge);
           }
           break;
    }

}
//========================1602初始化================================//
void   init()
{
    
       
 P4SEL = 0x00;
        P4DIR = 0xFF;
        P5SEL = 0x00;
        P5DIR|= BIT5 + BIT6 + BIT7;     //控制口设置为输出模式
        write_com(0x38);
 write_com(0x0c);
 write_com(0x06);
 write_com(0x01);
 write_com(0x80);

}

void INIT()
{
 
 
  P3SEL|=0X30;
  P3DIR|=0X10;
  P3DIR&=~0X20;
 UTCTL0|=SSEL0;
 UCTL0|=CHAR;
 
 UBR10=0X00;
 UBR00=0X03;
UMCTL0=0X4A;
 
 ME1=UTXE0+URXE0;
 UCTL0&=~SWRST;
 IE1|=URXIE0;
 IFG1&=~UTXIFG0;
}

void main( void )
{
  unsigned char Thousand, Hundred, Decade, Unit,x;
 
   WDTCTL = WDTPW + WDTHOLD;
   init();
   INIT();
   _EINT();
    
     write_com(0x80);
     for(x=0;x<9;x++)
       write_data(table1[x]);
   
      write_com(0x80+0x40+6);
       write_data('m');
       write_data('m');
   while(1)
   {
     while(!UTXIFG0);
        TXBUF0=0X55;
 
       number=table[0]*256+table[1];
 if(number > 6000)
          number = 0;
 Thousand = number/1000;
        Hundred = number%1000/100;
 Decade = number%100/10;
 Unit = number%10;

 
    write_com(0x80+0x40+2);
  write_data(0x30+Thousand);
  write_data(0x30+Hundred);
  write_data(0x30+Decade);
  write_data(0x30+Unit);

   }
 
}
#pragma vector=USART0RX_VECTOR
__interrupt void uarss(void)
{
  table[x++]=RXBUF0;
if(x>sizeof table-1)
x=0;

/*table[x]=RXBUF0;
  x++;
if(x==2)
x=0;
  */
}