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LabVIEW for LEGO MINDSTORMS and LabVIEW for Education

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Lego NXT 2.0 and PCF8574P i2c communication

Lego NXT 2.0 and PCF8574P i2c communication

‎01-21-2011 05:18 PM - edited ‎01-21-2011 05:20 PM

Hi, i;m working with LV2009 32b,Windows 7 64b edition, my NXT firmware is 1.28. Problem is that i can't communicate nxt brick with pcf8574P I/O. I have 82k pullups resistors.I attached my code.I hope that someone help me ;(

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Re: Lego NXT 2.0 and PCF8574P i2c communication

‎01-26-2011 08:53 AM

The problem persists even after changing Os to 32 bit Windows Xp virtual machine. All I get is -35 Error code (according data sheet:last transaction failed). I have no idea what could be wrong Smiley Indifferent

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Re: Lego NXT 2.0 and PCF8574P i2c communication

‎01-28-2011 03:50 AM

Dear czepek,

what version of LabVIEW NXT Module do you have?

Could you give me more details about your setup?

Have you tried using the examples that are included in the LV NXT Module?

 

Regards,

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