hold values on cRIO after reboot/deploy

[YannickB]

Hello,

In my current project, I have to calculate the amount of energy stored inside a gaz tank.

I'm looking for the best way to save this value so it won't be reset after a reboot or even if the software is redeployed.

The only way I can see for now is to store this in a file. However, I find this solution a bit heavy. Is there any lighter way to this ?

regards,

Yannick

[crossrulz · Accepted solution]

To save a value between system shutdowns you have to store it in a file on the hard drive.  Everything else gets wiped on a shutdown.

If you find the saving of the value is slowing down your main loop, then move the update to another loop and use a queue to send updates to it.

[YannickB]

ok, thank you.

I implemented it with the binary files write/read Vi, I guess it is the fastest method to save data on the disk.