TotalPhase's Aardvark I2C adaptor with LV driver to read back register

[Ed.Wong]

I try to read back the uController's register using Aardvark I2C adaptor with LV 8.2. I have no problem to read back one register. But the read back is unstable when I tried read more than one registers (Sometime bounce between 0 and real value). Please see the attached VI.

Also, is it a way to read/write all 256 registers at once?

Thanks for Help

Ed Wong

[Anna_M]

Hi Ed,

I was wondering - where did you get the Aardvark I2C vi's from?  They wouldn't load in your example program here.  Thanks!

[Ed.Wong]

Thanks, Anna

I just bought the NI-8451 to give it a try, but it is not working. I'm trying to read the register 0x32 and 0x95, it alway read back 0 and no error massager come out.

Please let me know what i'm doing wrong.

Thanks

Ed

[Meghan R]

Hi Ed,

Have you tried using any of the I2C examples?  You can find them in the example finder, by opening Hardware Input and Output>>I2C and SPI.  Do the examples return the expected data?

Thanks,

Meghan
Applications Engineer