📄 ds1302.c
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#include <reg52.h> //头文件
#include <stdio.h>
#define uchar unsigned char //宏定义
sbit SCLK = P1^3; //声明接口引脚
sbit I_O = P1^4;
sbit RSTB = P1^5;
void ResetDS1302(); //复位子函数
uchar ReadByteDS1302(); //字节读取子函数
void WriteByteDS1302(uchar W_Byte) ; //字节写入子函数
void SetYear() ; //年设置子函数
void SetMonth(); //月设置子函数
void SetDate(); //日设置子函数
void SetDay(); //星期设置子函数
void SetHour(); //小时设置子函数
void SetMinute (); //分钟设置子函数
void SetSecond (); //秒设置子函数
void DisableWrite (); //写保护子函数
void EnableWrite (); //写允许子函数
void Charge (); //充电控制子函数
void InitDS1302(); //初始化子函数
void WriteRamByte(); //RAM字节写入子函数
void Display(uchar loop); //时钟显示子函数
void BurstReadRAM(); //多字节突发方式读取RAM子函数
void BurstWriteRAM(); //多字节突发方式写入RAM子函数
void main (void) //主函数
{
uchar Key, Key1,Key2;
SCON = 0x50; //设置串行口: 方式 1, 8位UART, 允许接收
TMOD |= 0x20; //设置定时器T1, 方式 2, 8位自动重装
PCON =0x80; //设置SMOD=1
TL1 =0xF4; //波特率4800bit/s，初值
TH1 =0xF4;
TR1 = 1; //开启定时器1
TI = 1;
printf("***********AT89S52 CONTROL DS1302***********\n\n");
printf("Initialize the DS1302.\n");
InitDS1302(); //初始化DS1302
while (1)
{
printf("\nEnter DS1302 Menu Selection:\n");
printf("d or D: Display Clock Routine\n");
printf("s or S: Set DS1302\n");
printf("i or I: Run the Initialize Routine\n");
printf("r or R: Run the RAM Routine\n");
printf("e or E: Exit\n");
Key = _getkey(); //获取输入字符
switch(Key)
{
case 'd': //执行时钟操作
case 'D':
printf("\rRun the Display Clock Routine\n");
Display(1);
break;
case 's': //初始化DS1302
case 'S':
printf("\rRun Set DS1302\n");
printf("\nEnter DS1302 Time Set Menu Selection:");
printf("y or Y: Set year\n");
printf("M : Set Month\n");
printf("D:Set date\n");
printf("d: Set day\n");
printf("h or H: Set hour\n");
printf("m: Set minute\n");
printf("s or S: Set second\n");
Key1 = _getkey(); //获取输入字符
switch(Key1)
{
case 'y': //设置年
case 'Y':
SetYear();
break;
case 'M': //设置月
SetMonth();
break;
case 'D': //设置星期
SetDate();
break;
case 'd': //设置日
SetDay();
break;
case 'h': //设置小时
case 'H':
SetHour();
break;
case 'm': //设置分钟示
SetMinute();
break;
case 's': //设置秒
case 'S':
SetSecond();
break;
default:
printf("Please Input the Right Option");
}
break;
case 'i': //初始化DS1302
case 'I':
printf("Run the Initialize Routine\n");
InitDS1302();
break;
case 'r': //RAM操作
case 'R':
printf("\rRun the RAM Routine\n");
printf("\nEnter DS1302 RAM Menu Selection:");
printf("b or B: Write RAM Byte\n");
printf("r or R: Burst Read RAM\n");
printf("w or W: Burst Write RAM \n");
Key2 = _getkey(); //获取输入字符
switch(Key2)
{
case 'b': //RAM字节写入
case 'B':
WriteRamByte();
break;
case 'r': //多字节突发方式读取RAM
case 'R':
BurstReadRAM();
break;
case 'w': //多字节突发方式写入RAM
case 'W':
BurstWriteRAM();
break;
default:
printf("Please Input the Right Option");
}
break;
case 'e':
case 'E':
goto exit;
break;
default:
printf("Please Input the Right Option");
}
}
exit: printf("Exit the program");
}
void ResetDS1302() //复位子函数
{
SCLK = 0;
RSTB = 0; //复位
RSTB = 1;
}
uchar ReadByteDS1302() //字节读取子函数
{
uchar i;
uchar RByte;
uchar TempByte;
RByte = 0x00; //初始化
I_O = 1;
for(i=0; i<8; ++i) //逐位读取字节数据
{
SCLK = 1; //构造时钟
SCLK = 0;
TempByte = (uchar)I_O;
TempByte = TempByte <<7; //移位
RByte = RByte >> 1;
RByte |= TempByte;
}
return RByte; //返回结果
}
void WriteByteDS1302(uchar W_Byte) //字节写入子函数
{
uchar i;
for(i = 0; i < 8; ++i) //循环逐位写入
{
I_O = 0;
if(W_Byte & 0x01)
I_O = 1;
SCLK = 0; //时钟操作
SCLK = 1;
W_Byte = W_Byte >>1; //移位
}
}
void SetYear() //年设置子函数
{
uchar year;
printf("\nPlease Enter the year (0-99): "); //输入年
scanf("%bx", &year);
ResetDS1302(); //复位DS1302
WriteByteDS1302(0x06); //年寄存器地址
WriteByteDS1302(year); //写入年
ResetDS1302(); //复位DS1302
}
void SetMonth() //月设置子函数
{
uchar month;
printf("\n Please Enter the month (1-12): "); //输入月
scanf("%bx", &month);
ResetDS1302(); //复位DS1302
WriteByteDS1302(0x04); //月寄存器地址
WriteByteDS1302(month); //写入月
ResetDS1302(); //复位DS1302
}
void SetDate() //日设置子函数
{
uchar date;
printf("\n Please Enter the date (1-31): "); //输入日
scanf("%bx", &date);
ResetDS1302(); //复位DS1302
WriteByteDS1302(0x03); //日寄存器地址
WriteByteDS1302(date); //写入日
ResetDS1302(); //复位DS1302
}
void SetDay() //星期设置子函数
{
uchar day;
printf("\n Please Enter the day (1-7): "); //输入星期
scanf("%bx", &day);
ResetDS1302(); //复位DS1302
WriteByteDS1302(0x05); //星期寄存器地址
WriteByteDS1302(day); //写入星期
ResetDS1302(); //复位DS1302
}
void SetHour() //小时设置子函数
{
uchar hour;
printf("\n Please Enter the hour (1-24): "); //输入小时
scanf("%bx", &hour);
hour =hour & 0x3f; //设置时钟为24小时方式
ResetDS1302(); //复位DS1302
WriteByteDS1302(0x02); //小时寄存器地址
WriteByteDS1302(hour); //写入小时
ResetDS1302(); //复位DS1302
}
void SetMinute () //分钟设置子函数
{
uchar minute;
printf("\n Please Enter the minute (0-59): "); //输入分钟
scanf("%bx", &minute);
ResetDS1302(); //复位DS1302
WriteByteDS1302(0x01); //分钟寄存器地址
WriteByteDS1302(minute); //写入分钟
ResetDS1302(); //复位DS1302
}
void SetSecond () //秒设置子函数
{
uchar second;
printf("\n Please Enter the second (0-59): "); //输入秒
scanf("%bx", &second);
ResetDS1302(); //复位DS1302
WriteByteDS1302(0x00); //秒寄存器地址
WriteByteDS1302(second); //写入秒
ResetDS1302(); //复位DS1302
}
void DisableWrite () //写保护子函数
{
ResetDS1302(); //复位DS1302
WriteByteDS1302(0x8e); //写保护控制寄存器
WriteByteDS1302(0x80); //禁止写入
ResetDS1302(); //复位DS1302
}
void EnableWrite () //写允许子函数
{
ResetDS1302(); //复位DS1302
WriteByteDS1302(0x8e); //写保护控制寄存器
WriteByteDS1302(0); //允许写入
ResetDS1302(); //复位DS1302
}
void Charge () //充电控制子函数
{
ResetDS1302(); //复位DS1302
WriteByteDS1302(0x90); //涓流充电寄存器
WriteByteDS1302(0xab); //允许充电
ResetDS1302(); //复位DS1302
}
void InitDS1302()
{
uchar year, month, date, day, hour, minute, second;
printf("\nEnter the Clock information: ");
printf("\nPlease Enter the year (0-99): "); //输入年
scanf("%bx", &year);
printf("\n Please Enter the month (1-12): "); //输入月
scanf("%bx", &month);
printf("\n Please Enter the date (1-31): "); //输入日
scanf("%bx", &date);
printf("\n Please Enter the day (1-7): "); //输入星期
scanf("%bx", &day);
printf("\n Please Enter the hour (1-24): "); //输入小时
scanf("%bx", &hour);
hour =hour & 0x3f; //设置时钟为24小时方式
printf("\n Please Enter the minute (0-59): "); //输入分钟
scanf("%bx", &minute);
printf("\n Please Enter the second (0-59): "); //输入秒
scanf("%bx", &second);
EnableWrite (); //写允许子函数
Charge (); //允许充电
ResetDS1302(); //复位DS1302
WriteByteDS1302(0xbe); //以多字节突发方式写入8个字节时钟数据
WriteByteDS1302(second); //写入秒
WriteByteDS1302(minute); //写入分钟
WriteByteDS1302(hour); //写入小时
WriteByteDS1302(date); //写入日
WriteByteDS1302(month); //写入月
WriteByteDS1302(day); //写入星期
WriteByteDS1302(year); //写入年
WriteByteDS1302(0); //对写保护控制寄存器写入0
ResetDS1302(); //复位DS1302
}
void WriteRamByte()
{
uchar Address;
uchar Data;
printf("\nWrite RAM Function:");
printf("\nWrite Ram ADDRESS (HEX):");
scanf("%bx", &Address); //获取RAM地址
printf("\nWrite Ram DATA (HEX):");
scanf("%bx", &Data); //获取RAM数据
Address = ((Address * 2) | 0xC0); //RAM数据写入命令
ResetDS1302(); //复位DS1302
WriteByteDS1302(Address); //写RAM地址
WriteByteDS1302(Data); //写RAM数据
ResetDS1302(); //复位DS1302
}
void Display(uchar loop)
{
uchar lsec = 99, sec, min, hrs, dte, mon, day, yr;
do //主循环
{
ResetDS1302();
WriteByteDS1302(0xBF); //以多字节方式读取时钟寄存器数据
sec = ReadByteDS1302(); //读取秒
min = ReadByteDS1302(); //读取分
hrs = ReadByteDS1302(); //读取小时
dte = ReadByteDS1302(); //读取日期
mon = ReadByteDS1302(); //读取月份
day = ReadByteDS1302(); //读取星期
yr = ReadByteDS1302(); //读取年
ResetDS1302(); //复位DS1302
if(sec != lsec || !loop) //每秒显示一次
{ //输出结果
printf("\nYr Day Mon Dte Hrs Min Sec");
printf("\n%2.bX %2.bX %2.bX %2.bX", yr, day, mon, dte);
printf(" %2.bX %2.bX %2.bX", hrs, min, sec);
lsec = sec;
}
if(!loop) break;
}while(!RI);
if(loop) _getkey();
}
void BurstReadRAM()
{
uchar DS1302RAM[31]; //RAM数组
uchar i;
ResetDS1302(); //复位DS1302
WriteByteDS1302(0xFF); //多字节方式读取RAM
for (i=0; i<31; ++i)
{
DS1302RAM[i] = ReadByteDS1302(); //保存数据到RAM数组
}
ResetDS1302(); //复位DS1302
printf("\nDS1302 RAM Data；"); //输出片内RAM的数据
printf("\n%2.bX %2.bX %2.bX %2.bX %2.bX %2.bX %2.bX %2.bX",
DS1302RAM[0], DS1302RAM[1], DS1302RAM[2], DS1302RAM[3],
DS1302RAM[4], DS1302RAM[5], DS1302RAM[6], DS1302RAM[7]);
printf("\n%2.bX %2.bX %2.bX %2.bX %2.bX %2.bX %2.bX %2.bX",
DS1302RAM[8], DS1302RAM[9], DS1302RAM[10], DS1302RAM[11],
DS1302RAM[12], DS1302RAM[13], DS1302RAM[14], DS1302RAM[15]);
printf("\n%2.bX %2.bX %2.bX %2.bX %2.bX %2.bX %2.bX %2.bX",
DS1302RAM[16], DS1302RAM[17], DS1302RAM[18], DS1302RAM[19],
DS1302RAM[20], DS1302RAM[21], DS1302RAM[22], DS1302RAM[23]);
printf("\n%2.bX %2.bX %2.bX %2.bX %2.bX %2.bX %2.bX",
DS1302RAM[24], DS1302RAM[25], DS1302RAM[26], DS1302RAM[27],
DS1302RAM[28], DS1302RAM[29], DS1302RAM[30]);
printf("\nEND RAM Data；");
}
void BurstWriteRAM()
{
uchar Data[31];
uchar i;
for(i=0;i<31;i++)
{
printf("\nWrite Ram DATA (HEX):");
scanf("%bx", &Data[i]); //获取RAM数据
}
ResetDS1302(); //复位DS1302
WriteByteDS1302(0xfe); //多字节方式写入RAM
for (i=0; i<31; i++) //循环写入
{
WriteByteDS1302(Data[i]);
}
ResetDS1302(); //复位DS1302
}
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