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

[Texas_Diaz]

What you want to do is not possible on LabVIEW Real-Time on PXI.  There is no SQL database that runs on the Phar Lap operating system.  LabVIEW Real-Time also cannot talk to RAID hard drives, there are no drivers that support RAID on RT.

You would have to run Windows on your RT controller, and there all of your requirements are met.

-Danny

[hervend]

Hello Danny,

Thank you for your answer. I will look for the best way to implement what I would like to do.

Best regards,

Hervend

[chyparo]

I tried SQLite on RT OS, but there was problem probably with missing libraries. If you are more familiar with C+ then me, you can try.