急求两位的（共阳）数码管倒计（倒计时从99到0）时（动态扫描的方法）

疯狂的蜗牛

int a=2;//定义数字接口2 连接a 段数码管
int b=3;// 定义数字接口3 连接b 段数码管
int c=4;// 定义数字接口4 连接c 段数码管
int d=5;// 定义数字接口5 连接d 段数码管
int e=6;// 定义数字接口6 连接e 段数码管
int f=7;// 定义数字接口7 连接f 段数码管
int g=8;// 定义数字接口8 连接g 段数码管
int dp=9;// 定义数字接口9 连接dp 段数码管
void digital_0(void) //显示数字0
{
unsigned char i;
digitalWrite(g,HIGH);
digitalWrite(dp,HIGH);
for(i=2;i<=7;i++)
digitalWrite(i,LOW);
}
void digital_1(void) //显示数字1
{
unsigned char i;
digitalWrite(b,LOW);//给数字接口3 引脚高电平，点亮b段
digitalWrite(c,LOW);//点亮c 段
for(i=5;i<=9;i++)//熄灭其余段
digitalWrite(i,HIGH);
digitalWrite(a,HIGH);
}
void digital_2(void) //显示数字2
{
digitalWrite(a,LOW);
digitalWrite(b,LOW);
digitalWrite(d,LOW);
digitalWrite(e,LOW);
digitalWrite(g,LOW);
digitalWrite(c,HIGH);
digitalWrite(f,HIGH);
digitalWrite(dp,HIGH);
}
void digital_3(void) //显示数字3
{
  unsigned char i;
for( i=2;i<=5;i++)//熄灭其余段
digitalWrite(i,LOW);
digitalWrite(g,LOW);
digitalWrite(f,HIGH);
digitalWrite(e,HIGH);
digitalWrite(dp,HIGH);
}
void digital_4(void) //显示数字4
{
digitalWrite(b,LOW);
digitalWrite(c,LOW);
digitalWrite(f,LOW);
digitalWrite(g,LOW);
digitalWrite(a,HIGH);
digitalWrite(d,HIGH);
digitalWrite(e,HIGH);
digitalWrite(dp,HIGH);
}
void digital_5(void) //显示数字5
{
digitalWrite(a, LOW);
digitalWrite(c, LOW);
digitalWrite(d, LOW);
digitalWrite(f, LOW);
digitalWrite(g, LOW);
digitalWrite(b,HIGH);
digitalWrite(e,HIGH);
digitalWrite(dp,HIGH);

}
void digital_6(void) //显示数字6
{
unsigned char i;
for(i=4;i<=8;i++)
digitalWrite(i,LOW);
digitalWrite(b,HIGH);
digitalWrite(dp,HIGH);
}
void digital_7(void) //显示数字7
{
unsigned char i;
for(i=2;i<=4;i++)
digitalWrite(i,LOW);
for(i=5;i<=9;i++)
digitalWrite(i,HIGH);
}
void digital_8(void) //显示数字8
{
for( int i=2;i<=8;i++)
digitalWrite(i,LOW);
digitalWrite(dp,HIGH);
}
void digital_9(void) //显示数字9
{
unsigned char i;
for(i=2;i<=5;i++)
digitalWrite(i,LOW);
digitalWrite(f,LOW);
digitalWrite(g,LOW);
digitalWrite(e,HIGH);
digitalWrite(dp,HIGH);
}
void setup()
{
int i;//定义变量
for(i=2;i<=11;i++)
pinMode(i,OUTPUT);//设置2～11 引脚为输出模式
digitalWrite(10,HIGH);
digitalWrite(11,HIGH);
}

275891381

1. int weixuan_yinjiao[2]={2,3};
   
2. int smg_yinjiao[8]={4,5,6,7,8,9,10,11};
   
3. byte yangji[11]= {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0xff};//0-9和空
   
4. byte yinji[11]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x00};//yinji0-9 和空
   
5. 
   
6. void setup() {
   
7.    for(int i=0;i<8;i++)
   
8.       pinMode(smg_yinjiao[i], OUTPUT);
   
9.    for(int i=0;i<2;i++)
   
10.       pinMode(weixuan_yinjiao[i], OUTPUT);
    
11.          for(int i=0;i<2;i++)
    
12.       digitalWrite(weixuan_yinjiao[i], 1);
    
13. }
    
14. void smg(int num,int dian,int jixing)
    
15. {
    
16.     int temp;
    
17.     if(jixing==1)
    
18.      temp=yangji[num];
    
19.      else
    
20.      temp=yinji[num];
    
21.     for (int s = 0; s < 8; s++)
    
22.     {
    
23.        digitalWrite(smg_yinjiao[s], temp&0x01);
    
24.         temp=temp>>1;
    
25.     }
    
26.     if(dian==1)
    
27.         digitalWrite(smg_yinjiao[7], 0);
    
28. }
    
29. void saomiao(int num,int time_jiange,int jixing)
    
30. {
    
31.       smg(num/10,0,jixing);
    
32.       digitalWrite(weixuan_yinjiao[0],~jixing);
    
33.       digitalWrite(weixuan_yinjiao[1],jixing);
    
34.       delay(time_jiange);
    
35.       smg(num%10,0,jixing);
    
36.       digitalWrite(weixuan_yinjiao[0],jixing);
    
37.       digitalWrite(weixuan_yinjiao[1],~jixing);
    
38.       delay(time_jiange);
    
39.   
    
40. }
    
41. long time_old0=millis();
    
42. int k=0;
    
43. void loop() {
    
44.    
    
45.      if(millis()-time_old0>1000)
    
46.      {
    
47.         k++;      
    
48.         time_old0=millis();
    
49.     }
    
50.      saomiao(k,10,0);
    
51. }
    
52. 
    
53. //扫描函数里面的delay最好也改成millis()控制  不然系统就饿没空干别的了

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疯狂的蜗牛

275891381 发表于 2016-11-16 22:27

谢谢啊！等着晚上试试，还请大神赐教