Building relational databases on PXI RT targets

[hervend]

I'm currently developing a real-time acquisition system consisting in a PXIe-1082 chassis in which are inserted:

  - PXIe-8133 controller

  - PXIe-6366 ADC

  - PXI-7852R FPGA card

  - PXI- 8260 hard drive disks

Since the data are continuously acquired during weeks, months and even over years, they should be easily accessed through a database.

Another constraint deals with the ability for the system to perform field measurement and store the data even when the ethernet network is not always avaIable.

This implies constructing the database directly on the RT target. I discovered on this tutorial http://zone.ni.com/devzone/cda/epd/p/id/6287  a way to solve the problem on VxWorks RTOS... on CRIO RT targets. But this solution doesn't work on PXI RT targets since the OS is PharLap.

Is there anybody who has already dealt with this problem and developed a solution which could be helpful for me?

Additionnally, I would like to store this database on the additional HDD (PXI-8260) present in my system configuration. But the fact that these disks are not visible from the RTOS (but only from windows OS) prevents me from using them to store anything.

How could I workaround?

Best regards,

Hervend

[Eric.M]

Hello hervend,

These are two interesting points that you've raised.

1. LV RT does not directly support databases, but our partner Saphir did have developped a MySQL toolkit supported under RT targets.

2. The RAID disks boards are indeed supported by Windows, but their drivers are not RT-Compliant like you said, and there's no current workaround.

The official document lies here :

- https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019PlsSAE&l=en-US

Best regards,

Eric

[Caseyw]

Hello Hervend,

We are interested in discussing your requirements for relational database support further. Can you please private message me with your contact information so that our team can follow up? Thank you for your post and for your time.

Best Regards,

Casey Weltzin

Embedded Software Marketing

National Instruments

[hervend]

Hello Eric,

Thank you for your answer and all the information you provided me with. I will try to find in it what could be the most practical for my problem.

Best regards,

Hervend