main.cpp

MSP430上实现5110液晶显示程序(性价比很高的彩屏)

  send_com(0x8e);
  send_data(0x80);
}
void wp_off()                    //写保护禁止
{
  send_com(0x8e);
  send_data(0x00);
}
//////////////////////////////////////////////
void write_sec(unsigned int sec)       //写秒
{   
  wp_off();
  
  send_com(0x80);
  send_data(sec);
  wp_on();
}
 unsigned int read_sec()     //读秒
{
  send_com(0x81);
  read_data();
 unsigned int a,b; 
     a=y[0]+y[1]*2+y[2]*4+y[3]*8;
     b=y[4]+y[5]*2+y[6]*4;
     sec=b*10+a;  
  return sec;
}
////////////////////////////////////////////
void write_min(unsigned int min)                  //写分
{ wp_off();
  
  send_com(0x82);
  send_data(min);
  wp_on();
}
unsigned int read_min()              //读分
{
  send_com(0x83);
  read_data();
 unsigned int a,b; 
     a=y[0]+y[1]*2+y[2]*4+y[3]*8;
     b=y[4]+y[5]*2+y[6]*4;
     min=b*10+a;  
  return min;
} 
//////////////////////////////////////////
void write_hr(unsigned int hr)                   // 写小时
{ wp_off();
  
  send_com(0x84);
  send_data(hr);
  wp_on();
}
unsigned int read_hr()             //读小时
{
  send_com(0x85);
  read_data();
 unsigned int a,b; 
     a=y[0]+y[1]*2+y[2]*4+y[3]*8;
     b=y[4]+y[5]*2;
     hr=b*10+a;  
  return hr;
} 
////////////////////////////////////////
void write_date(unsigned int date)               //写日期
{ wp_off();
  
  send_com(0x86);
  send_data(date);
  wp_on();
}
unsigned int read_date()            //读日期
{
  send_com(0x87);
  read_data();
 unsigned int a,b; 
     a=y[0]+y[1]*2+y[2]*4+y[3]*8;
     b=y[4]+y[5]*2;
     date=b*10+a;  
  return date;
} 
//////////////////////////////////////////
void write_month(unsigned int month)               //写月
{ wp_off();
  
  send_com(0x88);
  send_data(month);
  wp_on();
}
unsigned int read_month()            //读月
{
  send_com(0x89);
  read_data();
 unsigned int a,b; 
     a=y[0]+y[1]*2+y[2]*4+y[3]*8;
     b=y[4];
     month=b*10+a;  
  return month;
} 
////////////////////////////////////////////////////
void write_day(unsigned int day)               //写星期
{ wp_off();
  
  send_com(0x8a);
  send_data(day);
  wp_on();
}
unsigned int read_day()            //读星期
{
  send_com(0x8b);
  read_data();
 unsigned int a; 
   a=y[0]+y[1]*2+y[2]*4;//+y[3]*8;
   //  b=y[4]+y[5]*2+y[6]*4+y[7]*8;
  day=a;
  return day;
} 

///////////////////////////////////////
void write_year(unsigned int year)               //写年
{ wp_off();
  
  send_com(0x8c);
  send_data(year);
  wp_on();
}
unsigned int read_year()            //读年
{
  send_com(0x8d);
  read_data();
 unsigned int a,b; 
     a=y[0]+y[1]*2+y[2]*4+y[3]*8;
     b=y[4]+y[5]*2+y[6]*4+y[7]*8;
     year=b*10+a;  
  return year;
} 

void shijianjishuan()
{
  year1=year/10;
  year2=year%10;
  date1=date/10;
  date2=date%10;
  month1=month/10;
  month2=month%10;
  hr1=hr/10;
  hr2=hr%10;
  min1=min/10;
  min2=min%10;
  sec1=sec/10;
  sec2=sec%10;
}
void read_all()
{
  sec=read_sec();
  min=read_min();
  hr=read_hr();
  date=read_date();
  month=read_month();
  day=read_day();
  year=read_year();
  shijianjishuan();
}
void weishu(float k)
{
  int q=k;
  a=q/10;
  b=q%10;
  float p=k-a*10-b;
  c=p*10;
}

//=======================================================================================
//============功能：写18B20 =============================================================
//=======================================================================================
void Write_18B20(unsigned char n)
{
    unsigned char i;
    for(i=0;i<8;i++)
    {
        DQ0;
        _NOP();_NOP();                           //==延时5us===
        _NOP();_NOP();_NOP();
        if((n&0X01)==0X01) 
        DQ1;
        else DQ0;
        n=n>>1;
       delay_us(60);                             //==延时50us 以上===
        DQ1;
    }
}
//=======================================================================================
//============功能：读取18B20 ===========================================================
//=======================================================================================
unsigned char Read_18B20(void)
{
    unsigned char i;
    unsigned char temp;
    for(i=0;i<8;i++)
    {
        temp=temp>>1;
        DQ0;
        _NOP();                                  //==延时1us===
        DQ1;
        _NOP();_NOP();                           //==延时5us===
        _NOP();_NOP();_NOP();
        P2DIR&=~0x01;
        if((P2IN&0x01)==0)
        {
            temp=temp&0x7F;
        }else
        {
            temp=temp|0x80;
        }
        delay_us(45);                             //==延时40us===
        P2DIR|=0x01;
        DQ1;
    }
    return    temp;
}
//=======================================================================================
//============DS18B20的初始化  ==========================================================
//=======================================================================================
void Init (void)
{
    DQ0;
    delay_us(600);                                //==延时500us=================
    DQ1;
    delay_us(50);                                //==延时16～60us==============
    P2DIR&=~0x01;
    if((P2IN&0x01)==0x01)                        //==0001 1111b=1f  ===========
    {
        Error=1;                               //==失败1=====================
        P2DIR|=0x01;
        DQ0;
    }else
    {
        Error=0;                                //==初始化成功================
        P2DIR|=0x01;
        DQ1;
        delay_us(500);
    }
}


//=======================================================================================
//======指令描述:跳过ROM命令,指定代码为CCH,忽略64位ROM地址,直接向DS1820发温度变换命令,===
//              适用于单片机工作.
//=======================================================================================
void Skip(void)
{
    Write_18B20(0xcc);
}
//=======================================================================================
//========== 指令描述:温度转换命令,指定代码为44H.启动DS1820进行温度转换,12位转换时最长===
//                    为750ms(9位为93.75ms).结果存入内部9字节RAM中.
//=======================================================================================
void Convert (void)
{
    Write_18B20(0x44);
}
//=======================================================================================
//================指令描述:读暂存器,指定代码为BEH.读内部RAM中9字节的内容.================
//=======================================================================================
void ReadDo (void)
{
    Write_18B20(0xbe);
}
//=======================================================================================

void ReadTemp (void)
{
    char temp_low,temp_high;                     //== 温度值 =====
    unsigned int temperature;
    temp_low=Read_18B20();                       //== 读低位 =====
    temp_high=Read_18B20();                      //== 读高位 =====
    
    temperature=(temp_high&0x0f);                //=== 屏蔽高4位==
    temperature<<=8;                    //=== 将temp_high部分数据移到temperature高8位===
    temperature|=temp_low;              //=== 将高低两字节内部合并成一个16位数据===
    Temper=temperature*0.0625;          //=== 计算真实温度值===
}

//=======================================================================================
//============获取DS18B20的温度值========================================================
//=======================================================================================
//===  MCU对DS18B20进行温度转换时,其操作必须满足以下过程:
//===  1- 每一次读写之前都要对DS18B20进行复位.
//===  2- 完成复位后发送一条ROM命令到DS18B20.
//===  3- 最后发送一条RAM命令到DS18B20.
void GetTemp(void)
 {
        Init();                  //=== DS1820初始化=== 
        Skip();                  //=== 跳过64位ROM(ROM命令)=== 
        Convert();               //=== 转换(RAM命令)=== 
       // delay_ms(300);         //=== 60000x5us=0.3s=== 
        Init();                  //=== DS1820初始化=== 
        Skip();                  //=== 跳过64位ROM=== 
        ReadDo();                //=== 读暂存器=== 
        ReadTemp();              //=== 读取温度值=== 
        weishu(Temper);
 }
 

main()
{	
        WDTCTL = WDTPW + WDTHOLD;
        DCOCTL=CALDCO_1MHZ;
        BCSCTL1=CALBC1_1MHZ;               
        P4DIR |=BIT2;                        //DS1302 CS
        P4OUT &=~BIT2;       
        P4DIR |=BIT0;                        //CLOCK
        P4OUT &=~BIT0;
        P4DIR |=BIT1;                        //I/O
        P4OUT &=~BIT1;                           //23时59分58秒  星期日
        P1DIR=0XFF;
  	res0;
	delay_us(100);
	res1;	  	
  	LCD_init();  //初始化LCD模块 
	LCD_clear(); //清屏幕
	write_sec(0x27);
        write_min(0x34);
        write_hr(0x19);
        write_date(0x24); //写进时间为09年10月31日
        write_month(0x05);
        write_year(0x09);
        write_day(0x07);
        LCD_write_shu(0,0,11);//
        LCD_write_shu(1,0,0);//
        LCD_write_shu(2,0,0);// 
        LCD_write_hanzi(3,0,8);// 年
        LCD_write_shu(5,0,0);//
        LCD_write_shu(6,0,0);//
        LCD_write_hanzi(7,0,9);//月
        LCD_write_shu(9,0,0);//
        LCD_write_shu(10,0,0);
        LCD_write_hanzi(11,0,10);//日
        LCD_write_shu(13,0,11);
        LCD_write_hanzi(0,2,11);//星
        LCD_write_hanzi(2,2,12);//期
        LCD_write_hanzi(4,2,7);//日
        LCD_write_shu(6,2,0);//
        LCD_write_shu(7,2,0);
        LCD_write_shu(8,2,10);
        LCD_write_shu(9,2,0);
        LCD_write_shu(10,2,0);
        LCD_write_shu(11,2,10);
        LCD_write_shu(12,2,0);
        LCD_write_shu(13,2,0);
        LCD_write_shu(0,4,11);
	LCD_write_shu(1,4,11);
        LCD_write_hanzi(1,4,0);//温
        LCD_write_hanzi(3,4,13);//度
        LCD_write_shu(5,4,11);
	LCD_write_shu(6,4,11);
        LCD_write_shu(7,4,0); 
        LCD_write_shu(8,4,0); 
        LCD_write_shu(9,4,12);
        LCD_write_shu(10,4,0);
        LCD_write_shu(11,4,13);
        LCD_write_shu(12,4,14);
     while(1)
     {
       read_all();
        LCD_write_shu(1,0,year1);//
        LCD_write_shu(2,0,year2);// 
        LCD_write_shu(5,0,month1);//
        LCD_write_shu(6,0,month2);//
        LCD_write_shu(9,0,date1);//
        LCD_write_shu(10,0,date2);
        LCD_write_hanzi(4,2,day);//日
        LCD_write_shu(6,2,hr1);//
        LCD_write_shu(7,2,hr2);
        LCD_write_shu(9,2,min1);
        LCD_write_shu(10,2,min2);
        LCD_write_shu(12,2,sec1);
        LCD_write_shu(13,2,sec2);
        GetTemp();
        LCD_write_shu(7,4,a); 
        LCD_write_shu(8,4,b);
        LCD_write_shu(10,4,c);
     }
}