niHSDIO_GetAttributeViReal64
Specific Function
C Function Prototype
ViStatus niHSDIO_GetAttributeViReal64 (ViSession vi, ViConstString channelList, ViAttr attributeID, ViReal64* value);
Purpose
This function queries the value of a ViReal64 attribute. You can use this function to get the values of device-specific attributes and inherent IVI attributes.
Parameters
| Name | Type | Description |
|---|---|---|
| vi | ViSession | This handle identifies your instrument session. vi was obtained from the niHSDIO_InitAcquisitionSession or niHSDIO_InitGenerationSession function. |
| channelList | ViConstString | If the attribute is channel or instance based, this parameter specifies the name of the channel or instance on which to set the value of the attribute; if the attribute is not channel or instance based, pass VI_NULL or an empty string. |
| attributeID | ViAttr | The ID of an attribute. |
| value | ViReal64 | Returns the current value of the attribute; pass the address of a ViReal64 variable. |