Communication I2c et carte PXI-6551

Bonjour,
j'aimerai communiquer avec une EEPROM série, donc avec un protocole I2c. Je possède Labview 8.6 et une carte PXI-6551.
j'utilise la librairie I2c pour créer des trames de communication, cependant je n'arrive pas à les envoyer sur la 6551, et je dois avouer que j'ai du mal à comprendre comment la gestion des ACK peut se faire.
Si vous pouviez me donner un coup de pouce, ce serait très aimable.
Merci d'avance,
Laurent.
Solved!
Go to Solution.

I have never used the I2C lIbrary. I didn't even know it existed. Thank you for teaching me something new.
You can send the I2C Waveform into the DAQmx Write function. First you have to open a new DAQmx session. Then set up the channels, timing, triggering, and such. Wire the waveform to the Write function, then use the Initiate function to cause the PXI-6551 to output the waveform. I hope that the I2C library you are using will take care of making the 6551 lines tri-state when it comes time to process the ACK signal.
I have built waveforms the hard way, using the Digital Waveform functions to produce the Start bit, address bits, ACK, and so on... I will have to take a look at the library you mentioned.
I have to re-install Labview because of a problem. When it is up and running, I will create a DAQmx example that you can use and post it here.
- tbob
Inventor of the WORM Global

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NI-DAQmx 7.3.1f0
NI Script Editor 1.1
NI-DMM 2.3.1
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The pxisys.ini and pxiesys.ini files are modified by me with referring to
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Is this minor issue can be related any incorrect tag lines in pxisys.ini or pxiesys.ini I posted?
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Looking forward your reply.
Cheers,
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Communication I2c et carte PXI-6551

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