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標題: 怎樣讓單片機數(shù)碼管時分秒顯示小數(shù)點? [打印本頁]

作者: 愛我你會火灬 時間: 2021-7-9 21:39
標題: 怎樣讓單片機數(shù)碼管時分秒顯示小數(shù)點?
#define       MAIN_Fosc             30000000L       //
#include       <STC15Fxxxx.H>
#define       Timer0_Reload       (65536UL -(MAIN_Fosc / 1000))             //Timer

/*****************************************************************************/

#define DIS_DOT       0x80
#define DIS_BLACK       0x10
#define DIS_             0x11

/*************       **************/

unsigned char code t_display[]={
//       0 1 2 3 4 5 6 7 8 9 A B C D E F
      0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E,//0-F
//black       - H J          K       L          N       o P       U t G Q r M y
      0xFF,0xBF,0x89,0xF1,0x8F,0xC7,0xAB,0xA3,0x8C,0xC1,0x87,0xC2,0x98,0xAF,0xC8,0x91,//10-1F
//       0 1 2 3 4 5 6 7 8 9 A B C D E F
      0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71,
//       0 1 2 3 4 5 6 7 8 9 A B C D E F
      0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71,
//       0 1 2 3 4 5 6 7 8 9 A B C D E F
      0x40,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71};       //20-2F

unsigned char code T_COM[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,0XBF};

/*************       **************/

sbit       P_HC595_SER = P2^2;       //pin 14       SER             data input
sbit       P_HC595_RCLK  = P2^3;       //pin 12       RCLk       store (latch) clock
sbit       P_HC595_SRCLK = P2^4;       //pin 11       SRCLK       Shift data clock

/*************       **************/

unsigned char       LED8[8];
unsigned char       display_index;
bit       B_1ms;
unsigned char       KeyCode;
unsigned char       cnt10ms;
unsigned char IO_KeyState, IO_KeyState1, IO_KeyHoldCnt;
unsigned char       cnt50ms;
unsigned char       hour,minute,second;
unsigned int       msecond;

/*************       **************/

void       DisplayRTC(void)
{

if(hour >= 10) LED8[0] = hour / 10;
else          LED8[0] = DIS_BLACK;
LED8[1] = hour % 10;
LED8[2] = minute / 10 ;
LED8[3] = minute % 10;
            LED8[4] = second / 10;
LED8[5] = second % 10;
if(msecond >= 500) LED8[1] &= DIS_DOT;/

}

/********************* ************************/
void       RTC(void)
{
      if(++second >= 60)
      {
            second = 0;
            if(++minute >= 60)
            {
                     minute = 0;
                     if(++hour >= 24)       hour = 0;
            }
      }
}

void       IO_KeyScan(void)；

/**********************  ************************/
void main(void)
{
      unsigned char       i,k;

      P0M1 = 0;       P0M0 = 0;
      P1M1 = 0;       P1M0 = 0;
      P2M1 = 0;       P2M0 = 0;
      P3M1 = 0;       P3M0 = 0;
      P4M1 = 0;       P4M0 = 0;
      P5M1 = 0;       P5M0 = 0;
      P6M1 = 0;       P6M0 = 0;
      P7M1 = 0;       P7M0 = 0;

      AUXR = 0x80;       //Timer0 set as 1T, 16 bits timer auto-reload,
      TH0 = (unsigned char)(Timer0_Reload / 256);
      TL0 = (unsigned char)(Timer0_Reload % 256);
      ET0 = 1;       //Timer0 interrupt enable
      TR0 = 1;       //Tiner0 run
      EA = 1;             //

      display_index = 0;
      RTC();
      DisplayRTC();

      for(i=0; i<8; i++)       LED8[ i] = DIS_BLACK;[ i]
      for(i=0; i<8; i++)       LED8[ i] = i;[ i]

      k = 0;
      LED8[6] = 0;
      LED8[7] = 0;
      hour = 12;
      minute = 0;
      second = 0;

      KeyCode = 0;
      cnt10ms = 0;

      IO_KeyState = 0;
      IO_KeyState1 = 0;
      IO_KeyHoldCnt = 0;
      cnt50ms = 0;

      while(1)
      {
            if(B_1ms)       //1msμ?
            {
                     B_1ms = 0;
                     if(++msecond >= 1000)       //1??μ?
                     {
                              msecond = 0;
                              RTC();
                              DisplayRTC();
                     }


         if(msecond >= 500) LED8[1] &= DIS_DOT;//D?ê±oóμ?D?êyμ?×???éá


            if(++cnt50ms >= 50)             //50msé¨?èò?′?DDáD?ü?ì
            {
                     cnt50ms = 0;
                     IO_KeyScan();
            }


            if(KeyCode > 0)             //óD?ü°′??
            {
                     LED8[6] = KeyCode / 10;       //??ê??ü??
                     LED8[7] = KeyCode % 10;       //??ê??ü??

                     if(KeyCode == 1)       //hour +1
                     {
                              if(++hour >= 24)       hour = 0;
                              DisplayRTC();
                     }
                     if(KeyCode == 2)       //hour -1
                     {
                              if(--hour >= 24)       hour = 23;
                              DisplayRTC();
                     }
                     if(KeyCode == 3)       //minute +1
                     {
                              second = 0;
                              if(++minute >= 60)       minute = 0;
                              DisplayRTC();
                     }
                     if(KeyCode == 4)       //minute -1
                     {
                              second = 0;
                              if(--minute >= 60)       minute = 59;
                              DisplayRTC();
                     }

                     KeyCode = 0;
            }

            }
      }
}
/**********************************************/
/*****************************************************


Y    P04    P05    P06    P07
      |       |       |       |
X       |       |       |       |
P00 ---- K00 ---- K01 ---- K02 ---- K03 ----       0
      |       |       |       |
P01 ---- K04 ---- K05 ---- K06 ---- K07 ----       0
      |       |       |       |
P02 ---- K08 ---- K09 ---- K10 ---- K11 ----       0
      |       |       |       |
P03 ---- K12 ---- K13 ---- K14 ---- K15 ----       0
      |       |       |       |
******************************************************/

unsigned char code T_KeyTable[16] = {0,1,2,0,3,0,0,0,4,0,0,0,0,0,0,0};

void IO_KeyDelay(void)
{
      unsigned char i;
      i = 60;
      while(--i)       ;
}

void       IO_KeyScan(void)
{
      unsigned char       j;
      j = IO_KeyState1;

      P0 = 0xf0;
      IO_KeyDelay();
      IO_KeyState1 = P0 & 0xf0;

      P0 = 0x0f;
      IO_KeyDelay();
      IO_KeyState1 |= (P0 & 0x0f);
      IO_KeyState1 ^= 0xff;

      if(j == IO_KeyState1)
      {
            j = IO_KeyState;
            IO_KeyState = IO_KeyState1;
            if(IO_KeyState != 0)
            {
                     F0 = 0;
                     if(j == 0)       F0 = 1;
                     else if(j == IO_KeyState)
                     {
                              if(++IO_KeyHoldCnt >= 20)
                              {
                                    IO_KeyHoldCnt = 18;
                                    F0 = 1;
                              }
                     }
                     if(F0)
                     {
                        j = T_KeyTable[IO_KeyState >> 4];
                        if((j != 0) && (T_KeyTable[IO_KeyState& 0x0f] != 0))
                        KeyCode = (j - 1) * 4 + T_KeyTable[IO_KeyState & 0x0f];
                     }
            }
            else       IO_KeyHoldCnt = 0;
      }
      P0 = 0xff;
}

/**************** ******************/
void Send_595(unsigned char dat)
{
      unsigned char       i;
      for(i=0; i<8; i++)
      {
            dat <<= 1;
            P_HC595_SER = CY;
            P_HC595_SRCLK = 1;
            P_HC595_SRCLK = 0;

      }
}

/*********************  ***********************/
void DisplayScan(void)
{
      Send_595(T_COM[display_index]);                               /
      Send_595(t_display[LED8[display_index]]);       /

      P_HC595_RCLK = 1;
      P_HC595_RCLK = 0;
      if(++display_index >= 8)       display_index = 0;       /

}

/********************** Timer0 1m ************************/
void timer0 (void) interrupt 1
{
      DisplayScan();       //1m
      B_1ms = 1;       //1m

}

作者: hhdsdy 時間: 2021-7-9 23:05
沒有電路圖，也不說什么時候顯示小數(shù)點，怎么幫？

作者: 愛我你會火灬 時間: 2021-7-9 23:20

hhdsdy 發(fā)表于 2021-7-9 23:05
沒有電路圖，也不說什么時候顯示小數(shù)點，怎么幫？

作者: 愛我你會火灬 時間: 2021-7-9 23:24
STC官方的呀
STC學習開發(fā)板

作者: wc86110 時間: 2021-7-10 01:16
這類數(shù)碼管第 ③，⑥ 位數(shù)碼管只 G 段顯示代表時鐘的冒號，樓主你看上面的段碼要保留哪個？

作者: Dxiaofeng 時間: 2021-7-10 07:26
這問題簡單，我可以回答，你數(shù)字取模取兩組，一組不帶小數(shù)點的，一組帶小數(shù)點的即可，然后你想要第幾位是小數(shù)，哪位就選帶有小數(shù)的字模

作者: yzwzfyz 時間: 2021-7-10 08:24
方法1：小數(shù)點單獨用一個IO控制，且每半秒反轉(zhuǎn)一次。

作者: lishengaha 時間: 2021-7-10 09:23
小數(shù)點是最高位來控制的，所以你用不帶小數(shù)點的段位碼 |上 0x80就是顯示小數(shù)點的段位碼

作者: hhdsdy 時間: 2021-7-10 09:58

lishengaha 發(fā)表于 2021-7-10 09:23
小數(shù)點是最高位來控制的，所以你用不帶小數(shù)點的段位碼 |上 0x80就是顯示小數(shù)點的段位碼

我也經(jīng)常這樣用，不過看樓主的字模，這是共陽接法的，高不亮低亮，只能 &0X7F 了

作者: 愛我你會火灬 時間: 2021-7-10 20:50

yzwzfyz 發(fā)表于 2021-7-10 08:24
方法1：小數(shù)點單獨用一個IO控制，且每半秒反轉(zhuǎn)一次。

我也i是怎樣想的

作者: 愛我你會火灬 時間: 2021-7-10 20:53
上面有代碼

作者: zjf98 時間: 2021-7-11 00:04
需要顯示i小數(shù)點時，把相應(yīng)數(shù)字的字碼取到后，將最高位只零，就是讀到的字碼&9x7f,在發(fā)送到595。

作者: 小楓啊 時間: 2021-7-11 11:43
哪一位數(shù)碼管需要小數(shù)點，直接給它的段選值＋0x80就行了

作者: mengsiu 時間: 2021-7-12 23:29
如果讓我來做，我絕對不會用兩只595來做掃描，這樣單片機要不停掃描顯示，很浪費運算資源。
我寧可用8只595，每只595驅(qū)動一個數(shù)碼管，數(shù)碼管靜態(tài)顯示不閃爍，單片機還不用整天掃描。
或者，我會使用一只TM1638，一只芯片可以掃描驅(qū)動最多10位數(shù)碼管，還能同時把按鍵也兼顧到了。

作者: 揪揪 時間: 2021-7-14 20:36
數(shù)碼管程序有段碼和位碼，你給小數(shù)點的段碼正確電平就行了，共陰數(shù)碼管和共陽數(shù)碼管會有點區(qū)分

歡迎光臨 (http://m.raoushi.com/bbs/)