/**
* <summary>
* Returns the unique hardware identifier of the function who performed the measures,
* in the form <c>SERIAL.FUNCTIONID</c>.
* <para>
* The unique hardware identifier is composed of the
* device serial number and of the hardware identifier of the function
* (for example <c>THRMCPL1-123456.temperature1</c>)
* </para>
* <para>
* </para>
* </summary>
* <returns>
* a string that uniquely identifies the function (ex: <c>THRMCPL1-123456.temperature1</c>)
* </returns>
* <para>
* On failure, throws an exception or returns <c>YDataSet.HARDWAREID_INVALID</c>.
* </para>
*/
public virtual async Task <string> get_hardwareId()
{
YModule mo;
if (!(_hardwareId == ""))
{
return(_hardwareId);
}
mo = await _parent.get_module();
_hardwareId = "" + await mo.get_serialNumber() + "." + await this.get_functionId();
return(_hardwareId);
}