DS3231時鐘芯片驅動資料

ID:268888 · 發表于 2017-12-29 16:46

#include <reg51.h>
#include <intrins.h>
#include <sys\sys.h>
#include <lcd\lcd.h>
#include <font\font.h>
typedef unsigned char BYTE;
typedef unsigned char uchar;
typedef unsigned int WORD;
#define FOSC 24000000L       //系統頻率
#define BAUD 9600          //串口波特率
#define T1MS (65536-FOSC/1000)    //1T模式
WORD c=0,valv=0,vali=0;
bit flag=0, ack,flag1=0 ;
int HL,TL,dat_v,HLi,TLi,dat_i=1000;
sbit led=P5^4;
sbit SDA=P3^5;
sbit SCL=P3^7;
sbit key=P3^2;
#define DS3231_WriteAddress 0xD0 //器件寫地址
#define DS3231_ReadAddress  0xD1 //器件讀地址
#define DS3231_SECOND    0x00 //秒
#define DS3231_MINUTE    0x01 //分
#define DS3231_HOUR       0x02 //時
#define DS3231_WEEK       0x03 //星期
#define DS3231_DAY       0x04 //日
#define DS3231_MONTH       0x05 //月
#define DS3231_YEAR       0x06 //年
//鬧鈴1
#define DS3231_SALARM1ECOND 0x07 //秒
#define DS3231_ALARM1MINUTE 0x08 //分
#define DS3231_ALARM1HOUR 0x09 //時
#define DS3231_ALARM1WEEK 0x0A //星期/日
//鬧鈴2
#define DS3231_ALARM2MINUTE 0x0b //分
#define DS3231_ALARM2HOUR 0x0c //時
#define DS3231_ALARM2WEEK 0x0d //星期/日
#define DS3231_CONTROL    0x0e //控制寄存器
#define DS3231_STATUS    0x0f //狀態寄存器
#define BSY                2    //忙
#define OSF                7    //振蕩器停止標志
#define DS3231_XTAL       0x10 //晶體老化寄存器
#define DS3231_TEMPERATUREH 0x11 //溫度寄存器高字節(8位)
#define DS3231_TEMPERATUREL 0x12 //溫度寄存器低字節(高2位)
uchar data dis_buf[8];
uchar data dis_index;
uchar data dis_digit;
/*Define ADC operation const for ADC_CONTR*/
#define ADC_POWER 0x80          //ADC電源控制位
#define ADC_FLAG 0x10          //ADC完成標志
#define ADC_START 0x08          //ADC起始控制位
#define ADC_SPEEDLL 0x00          //540個時鐘
#define ADC_SPEEDL  0x20          //360個時鐘
#define ADC_SPEEDH  0x40          //180個時鐘
#define ADC_SPEEDHH 0x60          //90個時鐘
#define ADC_P10  0x01 //IO引腳 Px.0
#define ADC_P11  0x02 //IO引腳 Px.1
#define ADC_P12  0x04 //IO引腳 Px.2
#define ADC_P13  0x08 //IO引腳 Px.3
#define ADC_P14  0x10 //IO引腳 Px.4
#define ADC_P15  0x20 //IO引腳 Px.5
#define ADC_P16  0x40 //IO引腳 Px.6
#define ADC_P17  0x80 //IO引腳 Px.7
#define ADC_P1_All 0xFF //IO所有引腳
//-----------------------------------------------
void InitADC();
BYTE GetADCResult(BYTE ch);
void Delay(WORD n);
BYTE GetADCResult(BYTE ch)
{
ADC_CONTR = ADC_POWER | ADC_SPEEDLL | ch | ADC_START; //ADC電源，轉換時間，通道，ADC打開
_nop_();                      //等待4個NOP
_nop_();
_nop_();
_nop_();
while (!(ADC_CONTR & ADC_FLAG));//等待ADC轉換完成
ADC_CONTR &= ~ADC_FLAG;       //Close ADC
return ADC_RES;                //返回ADC結果
}
void InitADC()
{
P1ASF =0x03;                   //設置P1口為AD口  設置P1.0和P1.1位AD口
ADC_RES = 0;                      //清除結果寄存器
ADC_CONTR = ADC_POWER | ADC_SPEEDLL;
Delay(2);                         //ADC上電并延時                   //ADC power-on and delay
}
void Delay(WORD n)
{
WORD x;
while (n--)
{
      x = 5000;
      while (x--);
}
}
uchar BCD2HEX(uchar val) //BCD???Byte
{
uchar temp;
temp=val&0x0f;
val>>=4;
val&=0x0f;
val*=10;
temp+=val;

return temp;
}
uchar HEX2BCD(uchar val) //B????BCD?
{
uchar i,j,k;
i=val/10;
j=val%10;
k=j+(i<<4);
return k;
}
void delayus(WORD us)
{
_nop_();
_nop_();
while (us--);
}
void Start_I2C()
{
SDA=1;                //???????????
delayus(3);
SCL=1;
delayus(27);          //??????????4.7us,??

SDA=0;                //??????
delayus(27);          // ??????????4祍

SCL=0;                //??I2C??,?????????
delayus(9);
}
void Stop_I2C()
{
SDA=0;                //???????????
delayus(3);          //???????????
SCL=1;                //??????????4us
delayus(27);

SDA=1;                //??I2C??????
delayus(21);
}
void SendByte(uchar c)
{
uchar BitCnt;

for(BitCnt=0;BitCnt<8;BitCnt++)       //?????????8?
{
      if((c<<BitCnt)&0x80)
         SDA=1;                         //?????
      else
         SDA=0;
      delayus(3);
      SCL=1;                         //??????,????????????
      delayus(27);                      //???????????4祍
      SCL=0;
}

delayus(9);
SDA=1;                               //8??????????,???????
delayus(9);
SCL=1;
delayus(15);
if(SDA==1)
      ack=0;
else
      ack=1;                            //???????????
SCL=0;
delayus(9);
}
uchar RcvByte()
{
uchar retc;
uchar BitCnt;

retc=0;
SDA=1;                         //?????????
for(BitCnt=0;BitCnt<8;BitCnt++)
{
      delayus(3);
      SCL=0;                   //??????,???????

      delayus(27);                //?????????4.7祍

      SCL=1;                   //???????????????
      delayus(15);
      retc=retc<<1;
      if(SDA==1)
         retc=retc+1;          //????,????????retc?
      delayus(9);
}
SCL=0;
delayus(9);
return(retc);
}

void Ack_I2C(bit a)
{

if(a==0)
      SDA=0;             //????????????
else
      SDA=1;
delayus(15);
SCL=1;

delayus(27);          //?????????4祍

SCL=0;                //????,??I2C????????
delayus(9);
}

uchar write_byte(uchar addr, uchar write_data)
{
Start_I2C();
SendByte(DS3231_WriteAddress);
if (ack == 0)
      return 0;

SendByte(addr);
if (ack == 0)
      return 0;

SendByte(write_data);
if (ack == 0)
      return 0;

Stop_I2C();
delayus(57);
return 1;
}

uchar read_current()
{
uchar read_data;
Start_I2C();
SendByte(DS3231_ReadAddress);
if(ack==0)
      return(0);

read_data = RcvByte();
Ack_I2C(1);
Stop_I2C();
return read_data;
}

uchar read_random(uchar random_addr)
{
Start_I2C();
SendByte(DS3231_WriteAddress);
if(ack==0)
      return(0);

SendByte(random_addr);
if(ack==0)
      return(0);

return(read_current());
}

void ModifyTime(uchar yea,uchar mon,uchar da,uchar hou,uchar min,uchar sec)
{
uchar temp=0;

temp=HEX2BCD(yea);
write_byte(DS3231_YEAR,temp); //???

temp=HEX2BCD(mon);
write_byte(DS3231_MONTH,temp);  //???

temp=HEX2BCD(da);
write_byte(DS3231_DAY,temp); //???

temp=HEX2BCD(hou);
write_byte(DS3231_HOUR,temp); //???

temp=HEX2BCD(min);
write_byte(DS3231_MINUTE,temp); //???

temp=HEX2BCD(sec);
write_byte(DS3231_SECOND,temp); //???
}

void get_show_time(void)                //顯示時間
{
uchar Htemp1,Htemp2,Mtemp1,Mtemp2,Stemp1,Stemp2;

Htemp1=read_random(DS3231_HOUR); //? 24???
Htemp1&=0x3f;
Htemp2=BCD2HEX(Htemp1);

Mtemp1=read_random(DS3231_MINUTE);  //?
Mtemp2=BCD2HEX(Mtemp1);

Stemp1=read_random(DS3231_SECOND);  //?
Stemp2=BCD2HEX(Stemp1);


      LCD_Show2Num(0,96,Htemp2,2);
   LCD_Show2Num(32,96,Mtemp2,2);
   LCD_Show2Num(64,96,Stemp2,2);
}

void get_show_date(void)             //顯示年月日
{
uchar Ytemp1,Ytemp2,Mtemp1,Mtemp2,Dtemp1,Dtemp2;

Ytemp1=read_random(DS3231_YEAR);       //?
Ytemp2=BCD2HEX(Ytemp1);

Mtemp1=read_random(DS3231_MONTH);    //?
Mtemp2=BCD2HEX(Mtemp1);

Dtemp1=read_random(DS3231_DAY);       //?
Dtemp2=BCD2HEX(Dtemp1);

   LCD_Show2Num(16,114,Ytemp2,2);

   LCD_Show2Num(48,114,Mtemp2,2);

   LCD_Show2Num(80,114,Dtemp2,2);

}

void get_show_Temperature(void)          //溫度數據
{
uchar Ttemp1,Ttemp_L,Ttemp3,Ttemp_H;

Ttemp1=read_random(DS3231_TEMPERATUREH); //溫度高位
Ttemp_H=Ttemp1;

Ttemp3=read_random(DS3231_TEMPERATUREL); //溫度地位
Ttemp_L=(Ttemp3>>6)*25;
if(Ttemp_H&0x80)
{
  flag1=1;
  Ttemp_H=Ttemp_H||0x7f;
}
else
  flag1=0;

      if(flag1==1)
      LCD_ShowString(40,130,"-") ;
   else
   LCD_ShowString(40,130," ") ;

   LCD_Show2Num(48,130,Ttemp_H,2);
      LCD_ShowString(64,130,".") ;

   LCD_Show2Num(72,130,Ttemp_L,2);

}
void init()    //串口以及定時器初始化程序
{
SCON = 0x50;                   //8位可變波特率
T2L = (65536 - (FOSC/4/BAUD));  //設置波特率重裝值
T2H = (65536 - (FOSC/4/BAUD))>>8;
AUXR = 0x14;                   //T2為1T模式, 并啟動定時器2
// AUXR |= 0x01;                //選擇定時器2為串口1的波特率發生器
AUXR |= 0x81;                //定時器0為1T模式
//  AUXR &= 0x7f;                //定時器0為12T模式
TMOD = 0x00;                   //設置定時器為模式0(16位自動重裝載)
TL0 = T1MS;                   //初始化計時值
TH0 = T1MS >> 8;
TR0 = 1;                      //定時器0開始計時
ET0 = 1;                      //使能定時器0中斷
ES = 1;                      //使能串口1中斷剛開機的時候關閉串口中斷防止串口有數據喚醒單片機
EA = 1;
}
void tm0_isr() interrupt 1 using 1 //1MS中斷程序
{
c++;
if(c==10)
{
flag=1;
c=0;
}
}
void dat_bat()       //溫濕度以及PM2.5程序處理程序
{
HL=GetADCResult(0);
TL=ADC_LOW2;
HL<<=2;
dat_v=HL|TL;
HLi=GetADCResult(1);
TLi=ADC_LOW2;
HLi<<=2;
dat_i=HLi|TLi;
vali=dat_i*5*4.65/1.024;
valv=dat_v*5*0.755/1.024;
}
void lcd_aux_init()
{
   showhanzi16(0,16,0); //
   showhanzi16(16,16,1); //
LCD_ShowString(32,16,":") ;
/////////////////////////
LCD_ShowString(96,16,"mV") ;
showhanzi16(0,32,0); //
   showhanzi16(16,32,10); //
LCD_ShowString(32,32,":") ;
//////////////////////////
LCD_ShowString(80,32,"mA") ;
LCD_ShowString(0,64,"DC SOURCE ") ;
LCD_ShowString(0,80,"1-12V 0-3A") ;

   LCD_Show2Num(0,114,20,2);// 年月日
   showhanzi16(32,114,24);
   showhanzi16(64,114,25);
   showhanzi16(96,114,26);

   showhanzi16(0,130,20); //溫度參數
   showhanzi16(16,130,21);
   LCD_ShowString(32,130,":") ;

LCD_ShowString(16,96,":") ; //時間參數
   LCD_ShowString(48,96,":") ;
}
void show_time()
{
LCD_Show2Num(48,16,vali,5);
LCD_Show2Num(48,32,valv,4);
}
main()
{
char ii=3;
Lcd_Init(); //tft初始化
init();
LCD_Clear(WHITE); //清屏
InitADC();
  BACK_COLOR=WHITE ;
POINT_COLOR=BLACK ;
lcd_aux_init();
while(1)
{
if(flag==1)    //50ms更新一次數據
{
dat_bat();
flag=0;
  get_show_date();             //????
  get_show_Temperature();    //????
  get_show_time();
}
  show_time();
if(key==0)
ModifyTime(17,3,23,14,05,00);
while(!key);

  led=~led;
  }

}

做了一個DC電源，加上這個時鐘芯片驅動

ID:371527 · 發表于 2018-12-26 07:08

名稱該是采集顯示時間溫度程序PM2,5時間溫度采用DS3231

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DS3231時鐘芯片驅動資料