這是一個單片機定時控制器，數(shù)碼的大神幫我寫的。想要加入蜂鳴器功能，按鍵時響一下，定時結束時長響一下，另外繼電器控制部分不能用，時什么原因？
- /********************************************************
- *
- *proteus仿真中晶振電路及復位電路自行添加
- *晶振：12M
- *
- *
- *********************************************************/
- #include <reg51.h>
- sbit K1=P2^0; // 開始
- sbit K2=P2^1; // 加
- sbit K3=P2^2; // 減
- sbit relay=P2^7;
- sbit wei1=P3^6;
- sbit wei2=P3^7;
- bit flag=0; //
- int L[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; //數(shù)碼管段選數(shù)據(jù) 根據(jù)實際電路修改
- int wei[8]={0xbf,0x7f}; //數(shù)碼管位選信號 根據(jù)實際電路修改
- unsigned char dat[2];
- unsigned char remaining_time=30;
- /************延時***************/
- void delay(int i)
- {
- int x,y;
- for(x=i;x>0;x--)
- for(y=125;y>0;y--);
- }
- void main(void)
- {
- relay=1;
- TMOD = 0x01; //定時器0 方式一
- TH0 = 0x0FC; //10ms計時高8位
- TL0 = 0x18; //10ms計時低8位
- EA = 1; //開啟總中斷
- ET0 = 1; //開啟定時器0中斷
- TR0 = 1; //開啟定時器0計數(shù)
- while(1)
- {
- if(!K1) //判斷K1鍵 //開始計時
- {
- delay(10); //按鍵去抖
- if(!K1)
- {
- flag=~flag;
- if(flag){
- remaining_time=remaining_time/10*10;
- }else remaining_time=30;
- while(!K1); //等待按鍵彈起
- }
- }
-
- if(!K2) //判斷K2鍵 +10
- {
- delay(10); //按鍵去抖
- if(!K2)
- {
- remaining_time=remaining_time/10*10+10;
- if(remaining_time>60) remaining_time=10;
- while(!K2); //等待按鍵彈起
- }
- }
-
- if(!K3) //判斷K3鍵 -10
- {
- delay(10); //按鍵去抖
- if(!K3)
- {
- remaining_time=remaining_time/10*10-10;
- if(remaining_time<10) remaining_time=60;
- while(!K3); //等待按鍵彈起
- }
- }
- }
- }
- void Timer0Interrupt(void) interrupt 1 //10ms中斷
- {
- static unsigned int timer0_num=0;
- static unsigned char show_flag=0;
-
- TH0 = 0x0D8; //中斷初值重裝
- TL0 = 0x0F0;
-
- if(flag){
- flag=1;
- if(++timer0_num>=600){ //6000次中斷為6000*10ms=1min
- timer0_num=0;
- if(--remaining_time==0){
- remaining_time=30;
- relay=0;
- flag=0;
- }
- }
- }
-
-
- dat[0]=L[remaining_time%100/10];
- dat[1]=L[remaining_time%10]| (flag?0x80:0);
- P3=0xff; //去重影
- P1=dat[show_flag]; //P1段選 根據(jù)實際電路修改
- wei1=show_flag;
- wei2=!show_flag;
- show_flag=!show_flag;
- }
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