3 /**
4 *PB口:连接一个LED数码管
5 *PC0:连接一个按键电路,按下呈低电平
6 *
7 */
8 unsigned char CountNum; //全局变量...return;
18 delay_ms(10);
19
20 key = PINC; //再次检测,防抖动
21 if(0x01 == key) //未按下...num[10] = {0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};
32 //初始化端口
33 DDRB = 0xFF; //设置...B口为输出模式
34 PORTB = 0xFF; //置高电平
35 DDRC = 0x00; //设置C口为输入模式
36
37 CountNum = 0; //初始化全局变量...num[10] = {0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};
90 //初始化端口
91 DDRB = 0xFF; //设置