Exemplo n.º 1
0
 private DataPointRT getLoggerPoint(int index, int type) {
   for (DataPointRT dp : dataPoints) {
     EBI25PointLocatorRT locator = dp.getPointLocator();
     if (locator.getVO().getIndex() == index && locator.getVO().getType() == type) return dp;
   }
   return null;
 }
Exemplo n.º 2
0
  @Override
  protected void doPoll(long time) {
    if (modbusMaster == null) return;

    // Get a list of logger indices. The list of points does not include disabled points, so
    // completely disabled
    // loggers will not be in the index list.
    List<Integer> loggerIndices = new ArrayList<Integer>();
    for (DataPointRT dp : dataPoints) {
      int index = ((EBI25PointLocatorRT) dp.getPointLocator()).getVO().getIndex();
      if (!loggerIndices.contains(index)) loggerIndices.add(index);
    }

    try {
      for (Integer loggerIndex : loggerIndices) {
        DataPointRT valuePoint = getLoggerPoint(loggerIndex, EBI25PointLocatorVO.TYPE_VALUE);
        DataPointRT batteryPoint = getLoggerPoint(loggerIndex, EBI25PointLocatorVO.TYPE_BATTERY);
        DataPointRT signalPoint = getLoggerPoint(loggerIndex, EBI25PointLocatorVO.TYPE_SIGNAL);

        // Read the first batch of values.
        BatchRead<String> batch = new BatchRead<String>();
        EBI25Constants.addLocator(
            batch, "count", loggerIndex, EBI25Constants.OFFSET_MEASUREMENT_COUNT, false);
        EBI25Constants.addLocator(
            batch, "start", loggerIndex, EBI25Constants.OFFSET_MEASUREMENT_START, true);
        EBI25Constants.addLocator(
            batch, "rate", loggerIndex, EBI25Constants.OFFSET_SAMPLE_RATE, false);
        EBI25Constants.addLocator(
            batch, "pointer", loggerIndex, EBI25Constants.OFFSET_MEASUREMENT_POINTER, false);
        EBI25Constants.addLocator(
            batch, "battery", loggerIndex, EBI25Constants.OFFSET_BATTERY, false);
        EBI25Constants.addLocator(
            batch, "signal", loggerIndex, EBI25Constants.OFFSET_SIGNAL, false);

        BatchResults<String> results = modbusMaster.send(batch);

        int count = EBI25Constants.getIntResult(results, "count");
        if (valuePoint != null && count > 0) {
          // Value point is enabled.
          BatchRead<String> valueBatch = new BatchRead<String>();

          int pointer = EBI25Constants.getIntResult(results, "pointer");
          for (int i = 0; i < count; i++) {
            EBI25Constants.addLocator(
                valueBatch,
                "value" + i,
                loggerIndex,
                EBI25Constants.OFFSET_MEASUREMENT_FIFO_START + pointer,
                false);
            pointer = (pointer + 1) % EBI25Constants.MEASUREMENT_FIFO_LENGTH;
          }

          // Run the batch.
          BatchResults<String> valueResults = modbusMaster.send(valueBatch);

          // Clear the number of measurements counter now instead of waiting until we read the value
          // results
          // just to minimize the possibility of a race condition.
          modbusMaster.setValue(
              EBI25Constants.createLocator(
                  loggerIndex, EBI25Constants.OFFSET_MEASUREMENT_COUNT, false),
              0);

          EBI25PointLocatorVO locator =
              ((EBI25PointLocatorRT) valuePoint.getPointLocator()).getVO();
          int sampleRateSeconds = EBI25Constants.getIntResult(results, "rate");
          long valueTime = EBI25Constants.getTimeResult(results, "start");
          for (int i = 0; i < count; i++) {
            // Read the value
            int value = EBI25Constants.getIntResult(valueResults, "value" + i);

            // Update the point
            double dvalue = locator.translateFromRawValue(value);
            valuePoint.updatePointValue(new PointValueTime(dvalue, valueTime));

            // Add the sample rate onto the value time.
            valueTime += sampleRateSeconds * 1000;
          }

          // Back out the sample rate for use with the battery and signal points.
          valueTime += sampleRateSeconds * 1000;

          if (batteryPoint != null)
            // Battery point is enabled
            batteryPoint.updatePointValue(
                new PointValueTime(EBI25Constants.getDoubleResult(results, "battery"), valueTime));

          if (signalPoint != null)
            // Battery point is enabled
            signalPoint.updatePointValue(
                new PointValueTime(EBI25Constants.getDoubleResult(results, "signal"), valueTime));
        }
      }

      // Deactivate any existing event.
      returnToNormal(DATA_SOURCE_EXCEPTION_EVENT, time);
    } catch (Exception e) {
      raiseEvent(DATA_SOURCE_EXCEPTION_EVENT, time, true, getLocalExceptionMessage(e));
    }
  }