Arduino with labview using linx

[kashifsherwani]

Hi,

I am using Arduino with labview and burning the program into arduino using makerhub linx. the problem I am facing is the delay in reading the input data from arduino to labview of about 10 seconds. looking forward for possible solutions.

Thanks

[GerdW]

Hi kash,

the problem I am facing is the delay in reading the input data from arduino to labview of about 10 seconds. looking forward for possible solutions.

I guess the problem is in your software.

You need to debug your software to find and eliminate that problem.

[RTSLVU]

Well without seeing your code all we can say is you are doing it wrong.

Beyond that your guess is as good as ours.

[Hooovahh]

My guess is you are closing and reopening the reference between each read.  This causes lots of extra delays and a better method is to open once, read many times in a loop, then close once.  Just a guess though and as others said posting the code would help with that.

[RavensFan]

Sounds like a timeout error to me.

But who would know without seeing any code posted.

[BertMcMahan]

Kind of fun to guess without source code 😉

But at 10 seconds, it's almost certainly a VISA Read timeout. Add a termchar to the end of your data stream from the Arduino. I can't recall if VISA Read's default timeout is 2 seconds or 10 seconds (and it may vary by device/driver? I'm not sure).

[kashifsherwani]

I am sharing the snapshot of the code. the problem i feel is with linx open serial which is taken time. the reason being, there is a delay in execution of the first sequence.

[kashifsherwani]

i think the delay is due to the initialisation of the linx.  Now the problem is, I am also actuating the actuator via digital write through linx and due to delay in acquisition, the actuator does goes to the extreme position till it start acquiring the data.

[RTSLVU]

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@kashifsherwani wrote:

i think the delay is due to the initialisation of the linx.  

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I think you should show us your code so we can actually help you.

[kashifsherwani]

hi,

 Please see the attached code. here i am using makerhub linx for the acquisition of data. To enter the sequence, it takes times.