关于单片机数码管倒计时如何变成正计时的问题？

ID:393625 发表于 2018-9-20 10:48

devcang 发表于 2018-9-17 09:35
这个Displaycountupnum函数在哪呢

其实，是把要显示的变量，换成

/*===============================================================*/
/*                   第二组级联74LS595_2数码管驱动程序       */
/*===============================================================*/
#ifndef _LS595_2driver_H_
#define _LS595_2driver_H_

sbit RCK_595_2 = P0^4;       //第二组级联595的并行输出时钟
sbit DS_595_2 = P0^3;       //第二组级联595数据线
sbit CLK_595_2 = P0^5;       //第二组级联595移位输入时钟

unsigned char code countupseg[] =    //第二组595中定义0~9，高亮低灭
{// 0    1    2    3 4    5    6    7 8    9
0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F
};
unsigned char code roundseg[6]={0x01,0x02,0x04,0x08,0x10,0x20}; //花式旋转

/*延时函数  1ms为单位*/
void Delay_ms(unsigned int t)          //延时函数,t/ms
{
  unsigned int a,b;
  for(a=0;a<t;a++)
  {
for(b=0;b<100;b++)
{
   _nop_();
}
  }
}

/* 向1个LS595_2写入1个字节*/
void Send1byte_595_2(unsigned char dat)
{
  unsigned char i;

  for(i=0;i<8;i++)
  {
if(dat&0x80)
DS_595_2 = 1;
else
DS_595_2 = 0;
dat <<=1;
CLK_595_2 = 0;
_nop_();
CLK_595_2 = 1;
  }

}
/* 向3个级联LS595_2写入3个字节*/
void Send3byte_595_2(unsigned char dat1,unsigned char dat2,unsigned char dat3)
{
  Send1byte_595_2(dat1);
  Send1byte_595_2(dat2);
  Send1byte_595_2(dat3);
}

/*允许将LS595输出并行数据*/
void Out_595_2()
{
  RCK_595_2 = 0;
  _nop_();
  RCK_595_2 = 1;
}

/*显示倒计时 3位*/
void Displaycountupnum(unsigned int num)
{
  unsigned int units,tens,hundreds;
  units = num%10;
  tens = (num/10)%10;
  hundreds = num/100;

  Send3byte_595_2(countupseg[hundreds],countupseg[tens],countupseg[units]); //显示倒计时的个、十、百位
  Out_595_2();

}
/*大字花式转圈*/
void Displayround()
{
  unsigned char j;
  for(j=0;j<5;j++)
  {
Send3byte_595_2(roundseg[j],roundseg[j],roundseg[j]);
Out_595_2();
Delay_ms(800);
  }

}
#endif

ID:393625 发表于 2018-9-20 10:46

a庚发表于 2018-9-17 17:56
Displaycountupnum()，这个函数贴出来

void Displaycountupnum(unsigned int num)
{
  unsigned int units,tens,hundreds;
  units = num%10;
  tens = (num/10)%10;
  hundreds = num/100;

  Send3byte_595_2(countupseg[hundreds],countupseg[tens],countupseg[units]); //显示倒计时的个、十、百位
  Out_595_2();

}

ID:393625 发表于 2018-9-20 10:26

HC6800-ES-V2.0 发表于 2018-9-18 08:16
正计时，根本不需要你这个倒计时程序嘛，只要正确读出1302的数据，就可以了，因为1302本身就是正计时啊。

/*===============================================================*/
/*                   DS1302驱动程序                         */
/*===============================================================*/
#ifndef _ds1302driver_H_
#define _ds1302driver_H_
//#include<LS595driver.h>

sbit RST_1302 = P2^2;    //1302的RST
sbit IO_1302 = P2^1;       //1302的IO
sbit SCLK_1302 = P2^0;    //1302的SCLK
sbit ACC0 = ACC^0;       //定义单片机累加器寄存器ACC
sbit ACC7 = ACC^7;       //定义单片机累加器寄存器ACC

/*  宏定义DS1302的写入寄存器  */
#define WDS1302_SECOND  0X80
#define WDS1302_MINUTE  0X82
#define WDS1302_HOUR 0X84
#define WDS1302_WEEK 0X8A
#define WDS1302_DAY    0X86
#define WDS1302_MONTH 0X88
#define WDS1302_YEAR 0X8C
#define WDS1302_BATTERY 0X90

/*  宏定义DS1302的读取寄存器  */
#define RDS1302_SECOND  0X81
#define RDS1302_MINUTE  0X83
#define RDS1302_HOUR 0X85
#define RDS1302_WEEK 0X8B
#define RDS1302_DAY    0X87
#define RDS1302_MONTH 0X89
#define RDS1302_YEAR 0X8D
#define RDS1302_BATTERY 0X91

/*向DS1302写入一个字节*/
void Send1byte_1302(unsigned char dat)
{
  unsigned char i;
  ACC = dat;       //将dat放入累加器ACC内
  for(i=8;i>0;i--)
  {
IO_1302 = ACC0;    //将ACC的最低位赋值给IO管脚
SCLK_1302 = 1;
SCLK_1302 = 0;
ACC = ACC>>1;
  }
}

/*从DS1302读取一个字节*/
unsigned char Get1byte_1302()
{
  unsigned char i;
  for(i=8;i>0;i--)
  {
ACC = ACC>>1;    //挪空最高位
ACC7 = IO_1302;    //将IO管脚赋值给ACC的最高位
SCLK_1302 = 1;
SCLK_1302 = 0;
  }
  return(ACC);
}

/*向DS1302指定地址写入数据  add--1302的地址，dat--写入的数据*/
void Write_1302(unsigned char add,unsigned char dat)
{
  RST_1302 = 0;
  SCLK_1302 = 0;
  RST_1302 = 1;
  Send1byte_1302(add);
  Send1byte_1302(dat);
  SCLK_1302 = 1;
  RST_1302 = 0;
}

/*从DS1302指定地址读取数据  add--1302的地址*/
unsigned char Read_1302(unsigned char add)
{
  unsigned char temp;
  RST_1302 = 0;
  SCLK_1302 = 0;
  RST_1302 = 1;
  Send1byte_1302(add|0x01);
  temp = Get1byte_1302();
  SCLK_1302 = 1;
  RST_1302 = 0;
  return(temp);
}

/*设置写保护 flag=1~禁止写  flag=0~允许写*/
void Protect_1302(unsigned char flag)
{
  if(flag)
Write_1302(0x8e,0x80);
  else
Write_1302(0x8e,0x00);
}

/*初始化DS1302 的日期*/
void Init_1302()//
{
  RST_1302 = 0;
  SCLK_1302 = 0;
  Protect_1302(0);                   //允许写操作
  Write_1302(WDS1302_SECOND,0x00); //向DS1302秒寄存器80H写入秒初始00
  Write_1302(WDS1302_MINUTE,0x00); //向DS1302分寄存器82H写入分初始00
  Write_1302(WDS1302_HOUR,0x12);    //向DS1302时寄存器84H写入时初始12
  Write_1302(WDS1302_WEEK,0x03);    //向DS1302周寄存器8aH写入周初始03
  Write_1302(WDS1302_DAY,0x01);    //向DS1302日寄存器86H写入日初始1
  Write_1302(WDS1302_MONTH,0x08);    //向DS1302月寄存器88H写入月初始8
  Write_1302(WDS1302_YEAR,0x18);    //向DS1302年寄存器8cH写入年初始18
  Protect_1302(1);                   //禁止写操作
}

/*设置单个寄存器日期时间*/
void Set_time_1302(unsigned char add,unsigned char time)
{
  unsigned char timeBCD;
  timeBCD = (time/10)<<4 | (time%10); //将十进制转为二进制才能写入
  Write_1302(0x8e,0x00); //允许写入
  Write_1302(add,timeBCD);
  Write_1302(0x8e,0x80); //启动保护禁止写
}

/*获取DS1302内的时间日期*/
void Gettime_1302(SYSTEMTIME *time)
{
  unsigned char gettempe;
  gettempe = Read_1302(RDS1302_SECOND);    //获取秒寄存器
  time->second = ((gettempe&0x70)>>4)*10 + (gettempe&0x0F);    //完成秒赋值二进制转十进制
  gettempe = Read_1302(RDS1302_MINUTE);    //获取分寄存器
  time->minute = ((gettempe&0x70)>>4)*10 + (gettempe&0x0F);    //完成分赋值二进制转十进制
  gettempe = Read_1302(RDS1302_HOUR);    //获取时寄存器
  time->hour = ((gettempe&0x70)>>4)*10 + (gettempe&0x0F);    //完成时赋值二进制转十进制
  gettempe = Read_1302(RDS1302_WEEK);    //获取周寄存器
  time->week= ((gettempe&0x70)>>4)*10 + (gettempe&0x0F);    //完成周赋值二进制转十进制
  gettempe = Read_1302(RDS1302_DAY);    //获取日寄存器
  time->day = ((gettempe&0x70)>>4)*10 + (gettempe&0x0F);    //完成日赋值二进制转十进制
  gettempe = Read_1302(RDS1302_MONTH);    //获取月寄存器
  time->month = ((gettempe&0x70)>>4)*10 + (gettempe&0x0F);    //完成月赋值二进制转十进制
  gettempe = Read_1302(RDS1302_YEAR);    //获取年寄存器
  time->year = ((gettempe&0x70)>>4)*10 + (gettempe&0x0F);    //完成年赋值二进制转十进制
}

#endif
请问这个程序能达到我想要的效果吗

ID:393625 发表于 2018-9-20 08:47

cico 发表于 2018-9-17 14:36
你是想做成日期一样吗？

就是数码管000-999的的正计时，一天加一。

ID:393625 发表于 2018-9-19 10:13

a庚发表于 2018-9-17 17:56
Displaycountupnum()，这个函数贴出来

/*===============================================================*/
/*                   第二组级联74LS595_2数码管驱动程序       */
/*===============================================================*/
#ifndef _LS595_2driver_H_
#define _LS595_2driver_H_

sbit RCK_595_2 = P0^4;       //第二组级联595的并行输出时钟
sbit DS_595_2 = P0^3;       //第二组级联595数据线
sbit CLK_595_2 = P0^5;       //第二组级联595移位输入时钟

unsigned char code countupseg[] =    //第二组595中定义0~9，高亮低灭
{// 0    1    2    3 4    5    6    7 8    9
0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F
};
unsigned char code roundseg[6]={0x01,0x02,0x04,0x08,0x10,0x20}; //花式旋转

/*延时函数  1ms为单位*/
void Delay_ms(unsigned int t)          //延时函数,t/ms
{
  unsigned int a,b;
  for(a=0;a<t;a++)
  {
for(b=0;b<100;b++)
{
   _nop_();
}
  }
}

/* 向1个LS595_2写入1个字节*/
void Send1byte_595_2(unsigned char dat)
{
  unsigned char i;

  for(i=0;i<8;i++)
  {
if(dat&0x80)
DS_595_2 = 1;
else
DS_595_2 = 0;
dat <<=1;
CLK_595_2 = 0;
_nop_();
CLK_595_2 = 1;
  }

}
/* 向3个级联LS595_2写入3个字节*/
void Send3byte_595_2(unsigned char dat1,unsigned char dat2,unsigned char dat3)
{
  Send1byte_595_2(dat1);
  Send1byte_595_2(dat2);
  Send1byte_595_2(dat3);
}

/*允许将LS595输出并行数据*/
void Out_595_2()
{
  RCK_595_2 = 0;
  _nop_();
  RCK_595_2 = 1;
}

/*显示倒计时 3位*/
void Displaycountupnum(unsigned int num)
{
  unsigned int units,tens,hundreds;
  units = num%10;
  tens = (num/10)%10;
  hundreds = num/100;

  Send3byte_595_2(countupseg[hundreds],countupseg[tens],countupseg[units]); //显示倒计时的个、十、百位
  Out_595_2();

}
/*大字花式转圈*/
void Displayround()
{
  unsigned char j;
  for(j=0;j<5;j++)
  {
Send3byte_595_2(roundseg[j],roundseg[j],roundseg[j]);
Out_595_2();
Delay_ms(800);
  }

}
#endif