ds3231高精度时钟模块程序.doc

模块参数: :38mm(长)*22mm(宽)*14mm(高) :8g :-- :高精度时钟芯片DS3231 :0-40℃围,精度2ppm,年误差约1分钟 、分、时、星期、日期、月和年计时,并提供有效期到2100年的闰年补偿 ,精度为±3℃ :AT24C32(存储容量32K) ,最高传输速度400KHz(工作电压为5V时) ,24C32地址可通过短路A0/A1/A2修改,默认地址为0x57 ,保证系统断电后,时钟任然正常走动 接线说明,以Arduinounor3为例: SCL→A5 SDA→A4 VCC→5V GND→GND 代码部分:#include<>#include<>#defineuchar  unsignedchar  #defineuint   unsignedintsbitSDA=P3^6;    //模拟I2C数据传送位SDA        sbitSCL=P3^7;    //模拟I2C时钟控制位SCLsbitINT=P3^2;      sbitRESET=P3^3;sbitled0=P1^0;sbitled1=P1^1;sbitled2=P1^2;sbitled3=P1^3;sbitled4=P1^4;sbitled5=P1^5;sbitled6=P1^6;sbitled7=P1^7;bit ack;         //应答标志位#defineDS3231_WriteAddress0xD0   //器件写地址 #defineDS3231_ReadAddress 0xD1   //器件读地址#defineDS3231_SECOND      0x00   //秒#defineDS3231_MINUTE      0x01   //分#defineDS3231_HOUR        0x02   //时#defineDS3231_WEEK        0x03   //星期#defineDS3231_DAY         0x04   //日#defineDS3231_MONTH       0x05   //月#defineDS3231_YEAR        0x06   //年//闹铃1            #defineDS3231_SALARM1ECOND0x07   //秒#defineDS3231_ALARM1MINUTE0x08   //分#defineDS3231_ALARM1HOUR  0x09   //时#defineDS3231_ALARM1WEEK  0x0A   //星期/日//闹铃2#defineDS3231_ALARM2MINUTE0x0b   //分#defineDS3231_ALARM2HOUR  0x0c   //时#defineDS3231_ALARM2WEEK  0x0d   //星期/日#defineDS3231_CONTROL     0x0e   //控制寄存器#defineDS3231_STATUS      0x0f   //状态寄存器#defineBSY                2      //忙#defineOSF                7      //振荡器停止标志#defineDS3231_XTAL        0x10   //晶体老化寄存器#defineDS3231_TEMPERATUREH0x11   //温度寄存器高字节(8位)#defineDS3231_TEMPERATUREL0x12   //温度寄存器低字节(高2位)  ucharcodedis_code[11]={0xc0,0xf9,0xa4,0xb0,  //0,1,2,3           0x99,0x92,0x82,0xf8,0x80,0x90,0xff};      //4,5,6,7,8,9,offuchardatadis_buf[8];uchardatadis_index;uchardatadis_digit; ucharBCD2HEX(ucharval)   //BCD转换为Byte{   uchartemp;   temp=val&0x0f;   val>>=4;   val&=0x0f;   val*=10;   temp+=val;      returntemp;}ucharHEX2BCD(ucharval)   //B码转换为BCD码{   uchari,j,k;