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1 kaklik 1
#define THRESHOLD  44     // rozhodovaci uroven mezi cernou a bilou
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#define FTHRESHOLD 100    // Rozhodovaci uroven dalkoveho sensoru
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#define MLEFT     OUT_C   // Motory
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#define MRIGHT    OUT_A
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#define RSENSOR   SENSOR_1   // Sensory na caru
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#define LSENSOR   SENSOR_3
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#define BUMPER    SENSOR_2   // Dalkovy sensor
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#define L 0  // left
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#define R 1  // right
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#define S 2  // straight
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int movement;     // smer minuleho pohybu
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int line;         // na ktere strane byla detekovana cara
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int dira;         // pocitadlo pro nalezeni preruseni cary
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int derivace;     // jak moc se bude zachovavat predesly smer
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void Straight()   // rovne
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{
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    SetPower (MLEFT,OUT_FULL);
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    SetPower (MRIGHT,OUT_FULL);
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    OnRev(MLEFT);
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    OnFwd(MRIGHT);
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    derivace=5;
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    movement=S;
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}
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void Left()    // doleva
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{
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    SetPower (MLEFT,OUT_LOW);
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    SetPower (MRIGHT,OUT_FULL);
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    Off(MLEFT);
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    OnFwd(MRIGHT);
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    derivace=5;
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    movement=L;
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}
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void Right()   // doprava
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{
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    SetPower (MLEFT,OUT_FULL);
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    SetPower (MRIGHT,OUT_LOW);
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    OnRev(MLEFT);
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    Off(MRIGHT);
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    derivace=5;
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    movement=R;
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}
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task main()
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{
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  PlaySound (SOUND_DOUBLE_BEEP);
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  Wait(100); // 1s
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  SetSensor(RSENSOR,SENSOR_LIGHT);   // senzor na caru modry pravy
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  SetSensor(LSENSOR,SENSOR_LIGHT);   // senzor na caru modry levy
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  // sensor na prekazku
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  SetSensor(BUMPER,_SENSOR_CFG(SENSOR_TYPE_LIGHT, SENSOR_MODE_RAW));
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  SetTxPower(TX_POWER_HI);    // aby daleko videl
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  movement=S;
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  line=S;
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  dira=0;
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  start cara;
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  start cihla;
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  while(true)
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  {
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       if (THRESHOLD < RSENSOR) {line=R; dira=0;};
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       if (THRESHOLD < LSENSOR) {line=L; dira=0;};
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  }
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}
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task cara()
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{
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Left();
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 while(true)
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 {
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   switch(line)
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   {
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      case S:
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          if (3 < dira++)
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          {
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            PlaySound(SOUND_DOUBLE_BEEP);
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          };
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          break;
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      case L:
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          switch(movement)
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          {
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//            case S:
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            case R:
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                    Left();
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                 break;
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            case L:
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                    Right();
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                 break;
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          };
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          break;
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      case R:
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          switch(movement)
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          {
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//            case S:
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            case L:
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                    Right();
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                 break;
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            case R:
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                    Left();
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                 break;
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          };
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          break;
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   };
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   line=S;
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   Wait(10);
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 }
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}
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task cihla() // dalkovy sensor
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{
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  int lastlevel;
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  lastlevel = 0;
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  while(true)
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  {
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    SendMessage(0);
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    if(lastlevel > BUMPER)
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    {
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      PlaySound(SOUND_FAST_UP);
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      stop cara;
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      Off(MLEFT);
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      Off(MRIGHT);
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      Wait(300);
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      start cara;
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    }
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    lastlevel = BUMPER;
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    lastlevel -= FTHRESHOLD;
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  }
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}
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