求助

ID:230975 · 發表于 2017-9-18 16:22

各位高手幫忙指教一下，我想在按鍵1按下的時候發送代碼ZOOM1,按鍵1松手時發送代碼STOP,按鍵2按下的時候發送ZOOM-，按鍵2抬起的時候發送STOP，我只會寫按下發送的，不會寫松手發送的，請幫忙指導一下謝謝

#include <REG52.H>
#define uchar unsigned char
#define uint unsigned int
sbit key1=P2^1;
sbit key2=P2^2;
uchar i,flag1,flag2;
uchar code stop[]={0x81,0x01,0x04,0x07,0x00,0xff};
uchar code zoom1[]={0x81,0x01,0x04,0x07,0x02,0xff};
uchar code zoom2[]={0x81,0x01,0x04,0x07,0x03,0xff};
void delay(uint);
void scankey();
void init()
{
   TMOD=0X20;
   TH1=0xfd;
   TL1=0xfd;
   TR1=1;
   EA=1;
   SCON=0x50;
   ES=1;
   }
void delay(uint z)
   {
   uint x,y;
      for(x=z;x>0;x--)
      for(y=110;y>0;y--);
   }
void scankey()
   {
   if(key1==0)
      delay(10);
   if(key1==0)
      {
   flag1=1;
   ES=0;
   for(i=0;i<6;i++)
      {
      SBUF=zoom1[i];
while(!TI);
TI=0;
         flag1=0;
   }
      ES=1;
   }



        if(key2==0)
         delay(10);
   if(key2==0)
      {
   ES=0;
   for(i=0;i<6;i++)
      {
      SBUF=zoom2[i];
while(!TI);
TI=0;
   }
      ES=1;
   }
   }
void main()
  {
init();
while(1)
   {
      scankey();
   }
  }