【沁恒CH585开发板免费试用体验】+电子时钟功能的实现

jinglixixi

2025-7-4 21:32:08

281

从相关这里看CH585是内置RTC的，但在例程中却没见到其身影，为此只好使用延时函数来实现电子时钟的计时功能，尽管对精度会产生影响，但在短时的应用中其累积误差还是基本可以接收的。

通过与前面介绍的点阵板功能相结合就可实现电子时钟功能

点阵板发送数据的函数为：

void OutByte(uint16_t dat)
{
   uint8_t i=0 ;
   for(i=0;i<16;i++)
   {
        CLK_low;
        if(dat&0x0001) 
        {
            LR1_high;
        }
        else
        {
            LR1_low;
        }
        dat=dat>>1; 
        CLK_high;
   }
}

发送多列数据的函数为：

void DisCol(uint16_t lenght)
{
    uint16_t dat;
    uint8_t m=0;
    while(lenght--)
    {
         dat=(S[sj[m+1]*16+ScanRow]<<8)+S[sj[m]*16+ScanRow];
         OutByte(dat);
         m=m+2;
    }
}

输出行地址的函数为：

void SeleRow(uint8_t Nd)
{
    uint8_t N;
    N=Nd;
    N=N%16;
    if(N&0x01) LA_high;
    else LA_low;
    if (N&0x02) LB_high;
    else LB_low;
    if (N&0x04) LC_high;
    else LC_low;
    if (N&0x08) LD_high;
    else LD_low;
}

实现显示输出的函数为：

void  Display(void)
{
    DisCol(4);
    LEN_high;
    LSTB_high;
    LSTB_low;
    SeleRow(ScanRow);
    LEN_low;
    ScanRow++;
    if(ScanRow>15) ScanRow=0;
}

实现电子时钟显示功能的函数为：

void ShowTime(void)
{
     t=t+1;
     if(t>59) 
     {
            m=m+1;
            t=0;
           if(m>59)
           {
                  h=(h+1)%24;
                  m=0;
           }
      }
      sj[0]=h/10;
      sj[1]=h%10;
      sj[3]=m/10;
      sj[4]= m%10;
      sj[6]= t/10;
      sj[7]= t%10;
      for(u=1;u<1000;u++)
      {
          DelayMs(1);   
          Display();
      }
}

为进行显示，所配置的字模由数组来存储，其内容为：

uint8_t S[]={

0x00,0x00,0x00,0x18,0x24,0x42,0x42,0x42,0x42,0x42,0x42,0x42,0x24,0x18,0x00,0x00,/ "0",0 /

0x00,0x00,0x00,0x08,0x0E,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x3E,0x00,0x00,/ "1",1 /

0x00,0x00,0x00,0x3C,0x42,0x42,0x42,0x20,0x20,0x10,0x08,0x04,0x42,0x7E,0x00,0x00,/ "2",2 /

0x00,0x00,0x00,0x3C,0x42,0x42,0x20,0x18,0x20,0x40,0x40,0x42,0x22,0x1C,0x00,0x00,/ "3",3 /

0x00,0x00,0x00,0x20,0x30,0x28,0x24,0x24,0x22,0x22,0x7E,0x20,0x20,0x78,0x00,0x00,/ "4",4 /

0x00,0x00,0x00,0x7E,0x02,0x02,0x02,0x1A,0x26,0x40,0x40,0x42,0x22,0x1C,0x00,0x00,/ "5",5 /

0x00,0x00,0x00,0x38,0x24,0x02,0x02,0x1A,0x26,0x42,0x42,0x42,0x24,0x18,0x00,0x00,/ "6",6 /

0x00,0x00,0x00,0x7E,0x22,0x22,0x10,0x10,0x08,0x08,0x08,0x08,0x08,0x08,0x00,0x00,/ "7",7 /

0x00,0x00,0x00,0x3C,0x42,0x42,0x42,0x24,0x18,0x24,0x42,0x42,0x42,0x3C,0x00,0x00,/ "8",8 /

0x00,0x00,0x00,0x18,0x24,0x42,0x42,0x42,0x64,0x58,0x40,0x40,0x24,0x1C,0x00,0x00,/ "9",9 /

0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x00,0x00,0x00,0x00,0x18,0x18,0x00,0x00,/ ":",10 /

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/ "-",11 /

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

};

实现时间设置与显示的主程序为：

int main(void)
{
    int k=0,y=0;
    HSECFG_Capacitance(HSECap_18p);
    SetSysClock(CLK_SOURCE_HSE_PLL_62_4MHz);
    dzb_Init();
    ScanRow=0;
    h=8;
    m=30;
    t=0;
    sj[2]=10;
    sj[5]=10;
    while (1)
    {
        ShowTime();
    }
}