hi to all
i'm developing with netduino plus and tpa 81 sensor on i2c. when network cable is disconnect temperatures values are good. If i connect network cable, temperatures are all wrong (not 0 but strange values).
i'm using firmware 4.2.0 RC4.
can someone help me ?
thanks in advance
dexmac
tpa81 i2c sensor read error with net cable connected
Started by
dexmac
, Jun 03 2012 01:34 PM
2 replies to this topic
#1
Posted 03 June 2012 - 01:34 PM
dexmac
www.dexmac.com
www.dexmac.com
#2
Posted 05 June 2012 - 05:29 AM
One of the forums members did a pretty exhaustive test around ADC noise and that is probably what you are seeing.
You can find his write up at http://highfieldtale...se-of-netduino/
Hope this helps.
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#3
Posted 30 December 2012 - 05:29 PM
Hi dexmac
I'm having a similar issue as your case, still I'm stuck there.
I keep getting strange value from tap81 like 7,39,46,14,3,0,0,0,0,0
I'm in a normal temperature environment so I guess the correct result should be like 7,25,23,24,23,23,21,23,21,21, stuff like that.
So did you figure out the reason for that?
thanks.
Henry
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