NI USB-8451 .net c# support

[cheece2001]

I'm looking into probably getting the NI USB-8451 but have a few questions.

I'll be using c# for making an app.  

Is there .net c# library for the usb-8451 so I can take advatnage of i2c , spi and all that?

[QueenSelene · Accepted solution]

Hi cheece2001,

To my knowledge there is unfortunately only a C API for the USB-8451. The user manual, found here: http://www.ni.com/pdf/manuals/371746e.pdf details all the C commands. Examples also come with the NI-845x driver download if you want to look at these. This downlad is found here: http://www.ni.com/download/ni-845x-15.0/5611/en/ The driver readme also only lists support for "Microsoft Visual C/C++ 6.0 (or newer)"

Hope this helps!

[Jason.0119]

hi 

I'll be using c# for making an app too.

can you share your source code ?

I need that code very much.

[Jepoy182]

Until now, i was only able to communicate and use the dio function as a switch and still looking on how to use the i2c function in c#

[santo_13]

You've to call the c dll in C#.

We have succeeded in using all the features of the 845x library in C# but couldn't share any of that development as those are proprietary.

[Jepoy182]

Just tried to call all of those and managed to resolved all of the thrown errors, the master acknowledged the slave address already but my problem lately was; when I run my code, it stops right after the  ni845xI2cWriteRead.TIA function.

[Jepoy182]

At last, I managed to make it work with a lot of exerted effort for several days.

[santo_13]

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@Jepoy182 wrote:

At last, I managed to make it work with a lot of exerted effort for several days.

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If it is not proprietary, please attach the code as reference for others.

[Whoo11]

Can you post the Source Code? Thanks

[SmithandJones2]

proprietary?  If you created some special interpreter software but if just taking the NI845x.dll and using visual studio to make some adapted version of the dll that runs in C# then it shouldnt be proprietary.  when I solve it, will hopefully make it public for the world since its not really fair that NI refuses to help solve this. 

No one write a new app in C in 2024.  We use C#.  NI must know how to do this and wants to not help, when it comes time to specify a vendor solution we will assuredly be looking elsewhere for this reason.