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 Robotics / 12961
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Subject: 
whats wrong with this events ?
Newsgroups: 
lugnet.robotics
Date: 
Sat, 28 Oct 2000 22:13:25 GMT
Original-From: 
Rik Bos <RIKBOS@XS4ALL.stopspamNL>
Viewed: 
816 times
  
I tried to make a proximitysensor with was "direction aware", this means i used
two lightsensors on port 1 and 3.
And tried to make the change of direction dependable of with sensor(event) was
triggert.
See code :

#define EVENT_PROXL    0 // proximity change
#define EVENT_SWITCH   1 // right switch
#define EVENT_PROXR    2 // proximity change
#define CurrentEvents() ActiveEvents(10)

sub initial()         // this is setting up the variables and events etc..
{
  SetUserDisplay(BatteryLevel(),3);
  SetSensorType(SENSOR_1, SENSOR_TYPE_LIGHT);
  SetSensorType(SENSOR_2, SENSOR_TYPE_TOUCH);
  SetSensorType(SENSOR_3, SENSOR_TYPE_LIGHT);
  SetSensorMode(SENSOR_1, SENSOR_MODE_RAW + 31);
  SetSensorMode(SENSOR_3, SENSOR_MODE_RAW + 31);
  SetTxPower(TX_POWER_HI);
  SetPower(OUT_B,8);
  SetEvent(EVENT_PROXL, SENSOR_1, EVENT_TYPE_FASTCHANGE);
  SetEvent(EVENT_SWITCH, SENSOR_2, EVENT_TYPE_PRESSED);
  SetEvent(EVENT_PROXR, SENSOR_3, EVENT_TYPE_FASTCHANGE);
  ev = 0;
  _pow=6;
}

task check_signal()
{
  SetPriority(1);
  while(true)
  {
    monitor(EVENT_MASK(EVENT_PROXL) + EVENT_MASK(EVENT_PROXR))
    {
      SendMessage(255); Wait(20);
    }
    catch
    {
      ev = 0;
      if (EVENT_MASK(EVENT_PROXL))
      {
        ev = 1;
      }
      if (EVENT_MASK(EVENT_PROXR))
      {
        ev = ev + 2
      }
      switch(ev)
      {
        case 1:
             left(_pow);
             Wait(TURN_TIME);
             forw(_pow);
             break;
        case 2:
             right(_pow);
             Wait(TURN_TIME);
             forw(_pow);
             break;
        case 3:
             back(_pow);
             Wait(BACKTIME);
             left(_pow);
             Wait(TURN_TIME);
             forw(_pow);
             break;
        default:
             break;
      }
    }
  }
}

I'm always ending up with ev = 3 e.g. driving backwards(case 3) even if i
disconnect one sensor, what's going wrong ?
I'm sorry for the long list of code but knew no other way to express the problem

Rik Bos


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Message has 1 Reply:
  Re: whats wrong with this events ?
 
You should psot this in lugnet.robotics.rcx.nqc Zhengrong (...) (24 years ago, 29-Oct-00, to lugnet.robotics)

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