how do I find the int value of nimodinst_attr_device_model

[kbill79]

Help,

I am updating my python drivers for our PXI rack, and I am implementing a fuction to get the serial numbers via niModInst_GetInstalledDeviceAttributeViString.

I can see in the help documentation, that this call has the parameter:

attributeID, the type is ViInt32, which is an integer, but the given valid values are:

NIMODINST_ATTR_DEVICE_NAME, NIMODINST_ATTR_DEVICE_MODEL, etc....

where do I find where, or how, these values are mapped to int32 values?  So far I have not been able to find the info.

thanks,

[HoussamK]

Hi,

according to niModInst_GetInstalledDeviceAttributeViString

NIMODINST_ATTR_DEVICE_MODEL—the model of the device (for example, NI PXI-5122)

so the typ of NIMODINST_ATTR_DEVICE_MODEL is ViString

[kbill79]

No, that is how it is described, but the type for that parameters is listed as ViInt32.  So the type doesn't seem to match the description.  passing a string does not work

[HoussamK]

//Get the size of the DeviceModel String;For e.g. get size of PXI-5122
     buffersize_devicemodel=niModInst_GetInstalledDeviceAttributeViString (vi, index,NIMODINST_ATTR_DEVICE_MODEL,0, NULL);

attributeID

ViInt32

The ID of the string attribute you want to query. Valid Values NIMODINST_ATTR_DEVICE_NAME—the name of the device, which can be used to open an instrument driver session for that device NIMODINST_ATTR_DEVICE_MODEL—the model of the device (for example, NI PXI-5122) NIMODINST_ATTR_SERIAL_NUMBER—the serial number of the device

[HoussamK]

The example Using NI-ModInst to query specific information in CVI demonstrates using NI-ModInst to get a list of devices that use a particular driver and obtain useful information about a specific device.
For example, you can use this example program to get a list of devices that use NI-DMM, along with their corresponding device numbers and serial numbers.

[HoussamK]

Attribute Definitions:

// ViString Attributes
#define NIMODINST_ATTR_DEVICE_NAME                 0
#define NIMODINST_ATTR_DEVICE_MODEL               1
#define NIMODINST_ATTR_SERIAL_NUMBER             2

[kbill79]

Thanks for the help, at the moment I just have an issue of setting up the pointer in python correctly, to pass to the DLL, then your suggestions should work.

[HoussamK]

you're welcome 🙂

I wish you much success