1.1 --- a/Hardware/LPC/F71882.cs	Sun Jan 31 20:57:18 2010 +0000
     1.2 +++ b/Hardware/LPC/F71882.cs	Sun Jan 31 22:00:31 2010 +0000
     1.3 @@ -146,9 +146,10 @@
     1.4        }
     1.5  
     1.6        foreach (Sensor sensor in temperatures) {
     1.7 -        int value = ReadByte((byte)(TEMPERATURE_BASE_REG + 2 * sensor.Index));
     1.8 +        sbyte value = (sbyte)ReadByte((byte)(
     1.9 +          TEMPERATURE_BASE_REG + 2 * sensor.Index));
    1.10          sensor.Value = value;
    1.11 -        if (value < 254)
    1.12 +        if (value < sbyte.MaxValue && value > 0)
    1.13            ActivateSensor(sensor);
    1.14          else
    1.15            DeactivateSensor(sensor);
    1.16 @@ -170,14 +171,16 @@
    1.17      private void ActivateSensor(Sensor sensor) {
    1.18        if (!active.Contains(sensor)) {
    1.19          active.Add(sensor);
    1.20 -        SensorAdded(sensor);
    1.21 +        if (SensorAdded != null)
    1.22 +          SensorAdded(sensor);
    1.23        }
    1.24      }
    1.25  
    1.26      private void DeactivateSensor(Sensor sensor) {
    1.27        if (active.Contains(sensor)) {
    1.28          active.Remove(sensor);
    1.29 -        SensorRemoved(sensor);
    1.30 +        if (SensorRemoved != null)
    1.31 +          SensorRemoved(sensor);
    1.32        }
    1.33      }
    1.34