ATmega16多位LED数码管显示,程序中有两个变量不太懂,求助!
请问程序中point_on和time_counter的作用,没看懂这两个,谢谢!~#include <mega16.h>#include <delay.h>
char time;
char dis_buff;
flash char led_7={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x7F,0x6F};
bit point_on;
flash char position={0xfe,0xfd,0xfb,0xf7,0xef,0xdf};
char time_counter;
void time_to_disbuffer(void)
{
char i,j=0;
for(i=0;i<2;i++)
{
dis_buff = time % 10;
dis_buff = time / 10;
}
}
void display(void)
{
char i;
for(i=0;i<=5;i++)
{
PORTA = led_7];
if (point_on && (i==2||i==4)) PORTA |= 0x80;
PORTC = position;
delay_ms(2);
PORTC =0xff;
}
}
void main()
{
PORTA=0x00; //初始化POTA
DDRA=0xFF;
PORTC=0x3F; //0011 1111
DDRC=0x3F; //0011 1111,PORT0-PORT5输入
time = 23;
time = 58;
time = 55;
time_to_disbuffer();
while(1)
{
display();
if(++time_counter >=40)
{
time_counter = 0;
point_on=~point_on;
if(++time>=60)
{
time = 0;
if(++time>=60)
{
time = 0;
if(++time>=24) time = 0;
}
time_to_disbuffer();
}
delay_ms(13);
}
}
} 哪两个变量? 汗,还以为楼主会写在后面呢。。。。 if (point_on && (i==2||i==4)) PORTA |= 0x80;
这个point_on应该是小数点吧,小时.分钟.秒 每个两位 point_on=~point_on; 这个是制造一闪一闪的效果 楼主挂了!!!!!!!! if(++time_counter >=40)
这个是用time_counter 来刷新显示,相当于一秒已经过去了。。
啊。。谢谢52171314的帮助~懂了!
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