求单片机按键的代码翻译

ID:540752 · 发表于 2019-5-29 13:15

哪位大佬帮忙翻译下代码

关于按键的控制
最主要的是0xff这种的看不懂。。。
void key()
{
uchar fs=255;
key_scan();
if((key_n!=0xff&&C_Mode==0)||discern_flag)
{
  delay(1000);
  key_n=0xff;
  key_scan();
  if((key_n!=0xff&&C_Mode==0)||discern_flag)
  {
key_scan();
if((key_n!=0xff&&C_Mode==0))
{
time=0;
fs=key_n;
}
else if(discern_flag)
{
fs=yuyin_n;
yuyin_n=0;
time=0;
delay(1000);
}
key_n=0xff;
key_scan();
while((key_n!=0xff&&C_Mode==0))
{
key_scan();
if(time>39&&Again==0)
{
   Again=1;
// time=40;
   switch(fs)
   {
   case 0x7f:
   if(vol<30) vol=15;
   if(vox<30) vox++;
   send_6(0x7E,0x04,0x31,vox,0x22,0xEF);
   break;
   case 0xbf:
   if(vol>0) vol=15;
   if(vox>0) vox--;
   send_6(0x7E,0x04,0x31,vox,0x22,0xEF);
   break;
   case 0xdf:
   if(set_s)
   {
      if(ch_song<sum)
      ch_song++;
   }
   else
   {
      times+=28;
      if(times>timer) times=timer;
      min=times/600;
      sec=times/10%60;
      send_5(0x7E,0x03,0x0A,0x09,0xEF);
   }

   break;
   case 0xef:
   if(set_s)
   {
      if(ch_song>1)
      ch_song--;
   }
   else
   {
      if(times>27)times-=28;
      else times=0;
      min=times/600;
      sec=times/10%60;
      send_5(0x7E,0x03,0x0B,0x08,0xEF);
   }

   break;
   }
}
show();
// read_dat();
}
switch(fs)
{
case 0x7f:
   if(time<40)
   {
   send_5(0x7E,0x03,0x04,0x07,0xEF);
   state=1;
   once=1;
   ACIS=6;
   discern_flag=0;
   fs=0;
   }

break;

case 0xbf:
   if(time<40)
   {
   send_5(0x7E,0x03,0x03,0x00,0xEF);
   state=1;
   once=1;
   ACIS=6;
   discern_flag=0;
   fs=0;
   }

break;

case 0xdf:
   if(discern_flag)
   {
   if(vol<30) vol=15;
   if(vox<30) vox++;
   send_6(0x7E,0x04,0x31,vox,0x22,0xEF);
   discern_flag=0;
   fs=0;
   }
   else
   {
   if(time<40)
   {
   times+=27;
   if(times>timer) times=timer;
   min=times/600;
   sec=times/10%60;
   send_5(0x7E,0x03,0x0A,0x09,0xEF);
   }
   }

break;

case 0xef:
   if(discern_flag)
   {
   if(vol>0) vol=15;
   if(vox>0) vox--;
   send_6(0x7E,0x04,0x31,vox,0x22,0xEF);
   discern_flag=0;
   fs=0;
   }
   else
   {
   if(time<40)
   {
   if(times>26)times-=27;
   else times=0;
   min=times/600;
   sec=times/10%60;
   send_5(0x7E,0x03,0x0B,0x08,0xEF);
   }
   }
break;

case 0xf7:
   if(state==2|state==0)
   {
   state=1;
   send_5(0x7E,0x03,0x01,0x02,0xEF);
   discern_flag=0;
   fs=0;
   }else
   {
   state=2;
   send_5(0x7E,0x03,0x02,0x01,0xEF);
   discern_flag=0;
   fs=0;
   }

break;

case 0xfb:
   state=0;
   send_5(0x7E,0x03,0x0E,0x0D,0xEF);
   discern_flag=0;
   fs=0;
break;

case 0xfd:
   EQ=(EQ+1)%6;
   send_6(0x7E,0x04,0x32,EQ,0x36,0xEF);
break;

case 0xfe:
   mode=(mode+1)%5;
   send_6(0x7E,0x04,0x33,mode,0x35,0xEF);
break;


}
  }
}
if(!key9)
{
  if(key_flag9)
  {
key_flag9=0;
C_Mode=~C_Mode;
  }
}
else
  key_flag9=1;
}

帐号		自动登录	找回密码
密码			立即注册