一個自行車碼表的設計，個人還不是特別的透徹，希望大家一起學習，帶proteus仿真工程文件，和51單片機源代碼。
碼表計時實物圖：
產品方案與論證：
程序流程：
狀態切換：
碼表的仿真原理圖：
自行車碼表源程序：
- #include<reg52.h>
- typedef unsigned char u8;
- typedef unsigned int u16;
- /********端口定義*********/
- #define DATA P0
- sbit seg_sel = P1^4;
- sbit bit_sel = P1^5;
- sbit start = P3^2;
- sbit store = P3^3;
- sbit diskey = P3^4;
- sbit reset = P3^5;
- sbit led = P1^0;
- /********變量定義*********/
- u16 tem_ms;
- u8 n_ten_ms,n_sec,n_min;
- u8 run_flag;//當run_flag為1，代表開始計數
- u8 temp_buf[5][3];
- u8 arr_pt;
- u8 code seg_tab[]={
- 0xc0,0xf9,0xa4,0xb0,
- 0x99,0x92,0x82,0xf8,
- 0x80,0x90,0x88,0x83,
- 0xc6,0xa1,0x86,0x8e
- };
- u8 code bit_tab[]={
- 0x10,0x20,0x40,0x80,
- 0x01,0x02,0x04,0x08
- };
- void delay(unsigned int y)
- {
- unsigned int x,z;
- for(x=y; x>0; x--)
- for(z=110; z>0; z--);
- }
- void display_led(u8 which_bit, u8 which_number)
- {
- bit_sel = 1;//Q[7..0]=D[7..0]
- DATA = bit_tab[which_bit];
- bit_sel = 0;//BIT[7..0]=0x80
- seg_sel = 1;//Q[7..0]=D[7..0]
- DATA = seg_tab[which_number];
- seg_sel = 0;
- }
- void display(u8 which_bit, u8 which_number)
- {
- u8 x,y;
- x = which_number/10;//分離十位
- y = which_number%10;//分離個位
- if (which_bit == 1)
- {
- display_led(1, x);
- delay(2);
- display_led(0, y);
- delay(2);
- }
- if (which_bit == 2)
- {
- display_led(4, x);
- delay(2);
- display_led(3, y);
- delay(2);
- }
- if (which_bit == 3)
- {
- display_led(7, x);
- delay(2);
- display_led(6, y);
- delay(2);
- }
- }
- void reflash (void)
- {
- display(1, n_ten_ms);
- display(2, n_sec);
- display(3, n_min);
- }
- void main (void)
- {
- TMOD = 0x01;//設置定時/計數器T0
- TH0 = (65535-10000) / 256;
- TL0 = (65535-10000) % 256;
- EA = 1;//開放總中斷
- ET0 = 1;//開放定時器0的溢出中斷
- //TR0 = 1;
- while (1)
- {
- if (start == 0)
- {
- delay(5);
- if (start == 0)
- {
- run_flag = ~run_flag;
- } while(!start);
- }
- if (run_flag)
- {
- TR0 = 1; //開始計數
- }
- else if (!run_flag)
- {
- TR0 = 0;
- if (diskey == 0)
- {
- delay (5);
- if (diskey == 0)
- {
- arr_pt --;
- n_ten_ms = temp_buf[arr_pt][0];
- n_sec = temp_buf[arr_pt][1];
- n_min = temp_buf[arr_pt][2];
- } while (!diskey);
- }
- }
- if (reset == 0)
- {
- delay(5);
- if (reset == 0)
- {
- n_ten_ms = 0;
-
- ………余下代碼請下載附件…………
資料下載：
碼表設計.zip
(2.54 MB, 下載次數: 46)
2017-3-24 18:10 上傳
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