Configuration data and clusters

While coding in LV for product test rig applications there is this need to save configuration data to disk and retrieve it while running the test. A typical scenario to test product "AA" will be :
1. There are 10 different variations of the basic product AA_1 to AA_10.
2. Each variant has 40 odd parameters that can vary.
3. User enters the values for these variants and will have to be saved on disk.
4. When a particular model is tested, all 40 parameters for it have to be read from disk and used in the various tests.
In such events the only option seems to be :
(*) Collect all the user entered parameters into clusters. If there are totally 8 tests for each model, then have 8 clusters and bundle parameters pertaining to each test into that cluster.
(*) Write the clusters to disk in a bit stream using "Write File.VI"
(*) When running the test, retrieve the parameters from disk and load them into the relevant clusters back. Unbundle by name and use each of the parameters as required. And if the same parameter is required to be used in many functions in the same test, then assign it to a local variable (my beloved ;-)) and use it.
I would like experienced LV professionals to comment on this method.
Handling the clusters and wiring them for large data storing and retrieval calls for heavy wiring. Is there no way out ?
Thanks
Raghunathan
Raghunathan
LV2012 to Automate Hydraulic Test rigs.

Hi Raghunathan,
Since you have to deal with so many elements of data, it looks like clusters will be your best method. It will simplify your file I/O and will also help you keep the data organized. I'm not sure why you must write the data to disk, but if it is necessary, clusters will be helpful. It's true that there will be many wires when you bundle and unbundle those clusters, but that will happen no matter how you deal with large numbers of parameters. It will probably make your code more readable if you write subVIs to take the clusters as input, and then break apart the clusters within the subVIs.
I hope this is helpful!
Megan B.
National Instruments

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Configuartion data and clusters

When coding for test rigs, it is normally required to save a large amount of configuration parameters that will be used during the test sequence. And these have to be saved in the hard disk.
The only option seems to be to save these parameters in clusters and write to disk. I am talking of something like 40 to 60 values - single precision, boolean, bytes and even strings all mixed.
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LV2012 to Automate Hydraulic Test rigs.

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here I got distracted by somebody and got a bunch of beers in lovely downtown Amsterdam....
Back behind my computer I notice your question got answered already. I would like to add a suggestion to the one VI solution:
Use two enums: one for read or write and one for all the "properies"/configurations. This will only work if you don't have to many different data types though. It is the cleanest solution I can think of, loading all settings into an uninitialized shift register (at startup) and calling that vi anywhere in your code where you need to read or write values. If you have many diffrent datatypes, you may consider embedding this vi inside new vi's that just do more specific tasks.
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hi,
>>>>Second, if i'm able to login, i have to import the exchange profile again. This should solve the problem. Or is this wrong?
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CM_AnalogInputs.ctl ‏11 KB

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INFO:iMPACT - Verification string: 51 52 59
INFO:iMPACT - Manufacturer ID:        49
INFO:iMPACT - Vendor ID:             01
INFO:iMPACT - Device Code:           18
Setting Flash Control Pins ...
Using x16 mode ...
Setting Flash Control Pins ...
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done.
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Setting Flash Control Pins ...
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Setting Flash Control Pins ...
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Using x16 mode ...
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`Elapsed time =    814 sec.
and i find many people have met the same thing. But they are spartan series FPGA and i try to low the Resistances of Mode pins,M0 M1 and M2, but the problem does not been solved.
I have read the status Registers and find there is an over-temperature state
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I am anxious about this problem and have not solved it yet
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As I encounter the  same configuration problem, I want to consult  you with some question.
Can I have your email?
gszakacs wrote:
I have measured the VCCINT and find it is 1.0V, not 2.997V;
That is not at all surprising. I always assumed the problem is with reading the XADC (system monitor) block and not with the voltage or temperature.
my Reference board is ML605
That would have been nice to know at the beginning...
It seems that you have selected the correct mode, assuming your jumpers are set as required in the ML605 Hardware User's Guide. See table 1-27, table 1-33 and the note below it about switch S1.
I'm not that familiar with the details of this reference design, but it may be that the slave SelectMap circuitry requires a reset or power cycle to actually configure the FPGA. Have you tried power-cycling to see if the FPGA boots from the flash?
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