public bool IsValid()
{
bool ret = true;
// SensorDevicePath must be present, publish interval must be positive
if (string.IsNullOrEmpty(SensorDevicePath))
{
Console.WriteLine("Missing or empty value for SensorDevicePath");
ret = false;
}
else if (PublishIntervalSeconds <= 0)
{
Console.WriteLine("Invalid value for PublishIntervalSeconds: ", PublishIntervalSeconds);
ret = false;
}
else
{
// Validate individual sensor configs
foreach (var config_pair in SensorConfigs)
{
SensorConfig sensorConfig = config_pair.Value;
// The only absolutely required field is the 1Wire ID for the sensor
if (string.IsNullOrEmpty(sensorConfig.SensorId))
{
Console.WriteLine("Key: ", config_pair.Key, ": Missing or empty value for SensorId");
ret = false;
break;
}
}
}
return(ret);
}
public SensorReading(ModuleConfig mc, string sensorId)
{
SensorConfig sc = mc.SensorConfigs[sensorId];
PublishTimestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
SensorName = string.IsNullOrEmpty(sc.SensorName) ? ModuleConfigDefaults.DefaultSensorName : sc.SensorName;
UOM = string.IsNullOrEmpty(sc.UOM) ? ModuleConfigDefaults.DefaultSensorUOM : sc.UOM;
Temperature = -9999;
string sensorfile = mc.SensorDevicePath + sc.SensorId + mc.SensorDevicePathSuffix;
bool deviceReadOk = false;
if (mc.VerboseLogging)
{
Console.WriteLine("Opening file: " + sensorfile);
}
// Open the sensor file
string[] lines = { "NO", "READING=-9999" };
try
{
lines = System.IO.File.ReadAllLines(sensorfile);
deviceReadOk = true;
}
catch (Exception ex)
{
Console.WriteLine("Unable to read device file " + sensorfile + ": " + ex.Message);
}
if (deviceReadOk)
{
// DS18B20 device files have the following structure:
// Line 1: Status
// Line 2: Reading
// Status will be YES if the reading is valid, if it's not YES then we should report an error
// Reading takes the form of string=number, where number is the Celcius temperature in thousandths of a degree
if (lines[0].Contains("YES"))
{
string[] readingString = lines[1].Split('=');
float readingC1000 = Convert.ToSingle(readingString[1]);
Temperature = readingC1000 / (float)1000.0;
if (sc.UOM.Equals("F"))
{
Temperature = (float)32 + ((float)1.8 * Temperature);
}
}
}
}
