自在自线亚洲а∨天堂在线-中文字幕一区视频播放-扒开双腿猛进入喷水高潮叫声-欧美日本亚洲一区二区-老熟妇高潮偷拍一区二区-国产精品高清一区二区不卡-午夜色福利视频一区二区三区-亚洲国产成人精品福利在线观看-亚洲欧美成人一区二区在线电影

void int1proc() interrupt IE1_VECTOR using 1
{
unsigned char i, key;
code unsigned char PS2TAB[] = {//20鍵PS2小鍵盤鍵碼表
  0x70,//0
  0x69,//1
  0x72,//2
  0x7a,//3
  0x6b,//4
  0x73,//5
  0x74,//6
  0x6c,//7
  0x75,//8
  0x7d,//9
  0x05,//F1
  0x06,//F2
  0x04,//F3
  0x0c,//F4
  0x03,//F5
  0x0b,//F6
  0x5a,//Enter
  0x76,//Esc
  0x66,//Bksp
  0x71//KP.
  };
  if (PS2Buffers.PS2KeyCount == 0){//PS2起始位測試
    if (!PS2CLOCK && !PS2DATA){//低電平是起始位
      if (PS2Buffers.PS2KeyExtFlage != 0xf0){
        PS2Buffers.PS2KeyTemp = 0;
        PS2Buffers.PS2KeyExtFlage = 0;
        PS2Buffers.PS2KeyPopError = 0;
      }
      PS2Buffers.PS2KeyCount ++;//脈沖計數(shù)
    }
    else PS2Buffers.PS2KeyPopError = 0xeb;//置鍵起始位錯誤號0xeb
  }
  else if (PS2Buffers.PS2KeyCount < 9){//PS2數(shù)據(jù)位
    key = PS2Buffers.PS2KeyTemp;//取鍵盤緩沖區(qū)移位數(shù)據(jù)
    key >>= 1;
    if (PS2DATA) key = 0x80;
    PS2Buffers.PS2KeyTemp = key;
    PS2Buffers.PS2KeyCount++;//脈沖計數(shù)
  }
  else if (PS2Buffers.PS2KeyCount == 9){//PS2數(shù)據(jù)奇校驗
    ACC = PS2Buffers.PS2KeyTemp;//取鍵盤緩沖區(qū)移位數(shù)據(jù)(C51取偶校驗位)
    if (P != PS2DATA) PS2Buffers.PS2KeyCount ++;//脈沖計數(shù)
    else{
      PS2Buffers.PS2KeyPopError = 0xec;////置鍵奇校驗位錯誤號0xec
      PS2Buffers.PS2KeyCount = 0;//脈沖計數(shù)歸零
    }
  }
  else if (PS2Buffers.PS2KeyCount == 10){//停止位
    key = PS2Buffers.PS2KeyTemp;//取鍵盤緩沖區(qū)移位數(shù)據(jù)
    PS2Buffers.PS2KeyCount = 0;//脈沖計數(shù)歸零
    if (PS2DATA){//高電平是停止位
      if (key == 0xe0){//本次是擴展鍵
        PS2Buffers.PS2KeyExtFlage = 0xe0;//置擴展鍵標(biāo)志(小鍵盤只有回車鍵)
      }
      else if (key == 0xf0){//本次是鍵斷碼,鍵釋放
        PS2Buffers.PS2KeyExtFlage = 0xf0;//置鍵釋放標(biāo)志
      }
      else{//本次必為鍵值
        if ((key == 0xaa) (key == 0xfa)) PS2Buffers.PS2KeyPushCount = 0;//長
壓鍵計數(shù)器清零
        else{
            PS2CLOCK = 0;//阻止PS2鍵盤立即回送數(shù)據(jù)
          PS2Buffers.PS2KeyPopError = 0xaa;//出錯碼
          for (i = 0; i < 20; i++){
            if (key == (PS2TAB[i])){//搜索
              key = i + 1;
              if (PS2Buffers.PS2KeyExtFlage == 0xf0){
                key = 0x80;//鍵釋放
                PS2Buffers.PS2KeyPushCount = 0;//長壓鍵計數(shù)器清零
                PS2Buffers.PS2KeyMessage = key;//存入當(dāng)前鍵值并執(zhí)行命令
              }
              else{
                if (key != PS2Buffers.PS2KeyVal){//換了一個鍵
                  PS2Buffers.PS2KeyPushCount = 0;//長壓鍵計數(shù)器清零
                  PS2Buffers.PS2KeyMessage = key;//存入當(dāng)前鍵值并執(zhí)行命令
                }
                else{//未換鍵
                  PS2Buffers.PS2KeyPushCount ++;//長壓鍵計數(shù)器計數(shù)
                  if (PS2Buffers.PS2KeyPushCount > DEFPS2PUSHCOUNT){//長壓時間到
                    PS2Buffers.PS2KeyMessage = key 0x40;//存入當(dāng)前鍵值并執(zhí)行命
令
                    PS2Buffers.PS2KeyPushCount = 0;//長壓鍵計數(shù)器清零
                  }
                }
              }
              PS2Buffers.PS2KeyVal = key;//存入當(dāng)前鍵值值1~20或0x80+(1~20)
              PS2Buffers.PS2KeyTemp = 0;//鍵碼移位記錄器
              PS2Buffers.PS2KeyExtFlage = 0;//擴展鍵標(biāo)志
              PS2Buffers.PS2KeyPopError = 0;//鍵釋放標(biāo)志或出錯碼
              break;
            }
          }
          if (PS2Buffers.PS2KeyPopError) PS2Buffers.PS2KeyPushCount = 0;//長壓鍵
計數(shù)器清零
          PS2CLOCK = 1;//釋放PS2時鐘總線
        }
      }
    }
    else PS2Buffers.PS2KeyPopError = 0xed;//置停止位錯誤號0xed
  }
  else PS2Buffers.PS2KeyCount = 0;//PS2鍵盤出錯
}
/*------------------------------------------------------------------
         利用函數(shù)指針數(shù)組運行PS2鍵盤散轉(zhuǎn)命令
-------------------------------------------------------------------*/
void PS2CommandExec(unsigned char key)
{
unsigned int i;
code void *funcpushbuffers[] = {//命令散轉(zhuǎn)表(匯編中的16個DW)
/*------------------------------------------------------------------
        鍵盤c程序15個壓鍵、放鍵及長壓鍵事件處理函數(shù)指針地址
-------------------------------------------------------------------*/
  (void *)ClrWdt            + 0x0000,
/*---------------------------------------------
           10個功能鍵壓鍵事件處理(獨立管理)
----------------------------------------------*/
  (void *)PS2F1KeyPush      + 0x5b7d,      //功能鍵F1壓鍵事件處理
  (void *)PS2F2KeyPush      + 0xa6ea,      //功能鍵F2壓鍵事件處理
  (void *)PS2F3KeyPush      + 0xf157,      //功能鍵F3壓鍵事件處理
  (void *)PS2F4KeyPush      + 0x4cc4,      //功能鍵F4壓鍵事件處理
  (void *)PS2F5KeyPush      + 0x9731,      //功能鍵F5壓鍵事件處理
  (void *)PS2F6KeyPush      + 0xe2ae,      //功能鍵F6壓鍵事件處理
  (void *)PS2EnterKeyPush   + 0x3d1b,      //功能鍵Enter壓鍵事件處理
  (void *)PS2EscKeyPush     + 0x8888,      //功能鍵Esc壓鍵事件處理
  (void *)PS2BkspKeyPush    + 0xd3f5,      //功能鍵Bksp壓鍵事件處理
  (void *)PS2KpKeyPush      + 0x2e62,      //功能鍵Kp壓鍵事件處理
/*---------------------------------------------
           2個放鍵事件處理(集中管理)
----------------------------------------------*/
  (void *)PS2NumberKeyPop   + 0x79df,      //數(shù)字鍵放鍵事件處理
  (void *)PS2FuncKeyPop     + 0xc44c,      //功能鍵放鍵事件處理
/*---------------------------------------------
           2個長壓鍵事件處理(集中管理)
----------------------------------------------*/
  (void *)PS2NumberKeyPushL + 0x1fb9,      //數(shù)字鍵長壓鍵事件處理
  (void *)PS2FuncKeyPushL   + 0x6a26,      //功能鍵長壓鍵事件處理
/*---------------------------------------------
           1個數(shù)字鍵壓鍵事件處理(集中管理)
----------------------------------------------*/
  (void *)PS2NumberKeyPush  + 0xb593       //數(shù)字鍵0~9壓鍵事件處理
  };
/*--------------------------------------------*/
  i = key;
  key &= 0x3f;//去掉鍵釋放及長壓鍵標(biāo)志,取真鍵碼
  key --;
  if (key < 20){//只有20個鍵
    if (key < 10){//數(shù)字鍵0~9
      if (i <= 10) key = 15;//(散轉(zhuǎn)號0)壓數(shù)字鍵0~9
      else{
        if (i & 0x80) key = 11;//(散轉(zhuǎn)號11)放數(shù)字鍵0~9
        else key = 13;//(散轉(zhuǎn)號13)長壓數(shù)字鍵0~9
      }
    }
    else{//壓功能鍵F1~F6,Enter..KP
      if ((i & 0xc0) == 0) key -= 9;//(散轉(zhuǎn)號1~10)壓功能鍵F1~F6,Enter..KP
      else{
        if (i & 0x80) key = 12;//(散轉(zhuǎn)號12)放功能鍵
        else key = 14;//(散轉(zhuǎn)號14)長壓功能鍵
      }
    }
    ClrWdt();//喂狗(鬼知道鍵盤程序要運行多久,就替它先喂一次吧)
    i = ((key * 53 & 0xf) * 0x1000)+ ((key * 43 & 0xf) * 0x100) + ((key * 23 &
0xf) * 0x10) + (key * 13 & 0xf);
    _icall_((void *)funcpushbuffers[key] - i);//取鍵盤散轉(zhuǎn)表并執(zhí)行鍵盤命令
  }
}
這個鍵盤程序與一般網(wǎng)上的有很大區(qū)別,它充分利用了外部中斷(0字)hotpower[1次]

****下面是一個不版本的單片機鍵盤c程序歡迎廣大讀者實驗http://www.51hei.com 編制********************************

unsigned CHAR key,key_h,kpush;
unsigned int key_l;

//按鍵連接到p1.0、p1.1、p1.2

void int_t0(void) interrupt 1 {
    unsigned CHAR dd,i;
    TL0=TL0+30;TH0=0xfb;    //800
    /*    按鍵判別    */
    if ((P1&0x7)==0x7) {
        if ((key_l>30)&&(key_l<800)&&(key_h>30)) {        //釋放按鍵，如果之前按鍵時間少于1秒，讀入鍵值
            key=kpush;
        }
        if ((++key_h)>200) key_h=200;
        key_l=0;
        if (key>=0x80) key=0;                            //如果之前的按鍵為長按1秒，清除鍵值
    } else {
        kpush=P1&0x7;
        key_l++;
        if ((key_l>800)&&(key_h>30)) {                    //如果按鍵超過1秒，鍵值加0x80標(biāo)志長按鍵
            key=kpush|0x80;
            key_h=0;
            key_l=0;
        }
    }
}
void main(void) {
    TMOD=0x1;TR0=1;ET0=1;EA=1;
    while (1) {
        while (!key) {}
        SWITCH (key) {
        case 1:break;
        case 2:break;
        }
    }
}