so there is no way i can get it fixed?
Date: Fri, 30 Jan 2009 21:03:57 -0500
From: [email protected]
To: [email protected]
Subject: Re: [Owfs-developers] problem: ds18b20 acts wierd on temperature
80-95 C
>From the DS1822 datasheet:
The use of parasite power is not recommended for temperatures above 100°C since
the DS1822 may not
be able to sustain communications due to the higher leakage currents that can
exist at these temperatures.
For applications in which such temperatures are likely, it is strongly
recommended that the DS1822 be
powered by an external power supply.
What bus master, and what mode of power delivery are you using? Also which chip?
Paul Alfille
On Fri, Jan 30, 2009 at 7:59 PM, UnWasted <[email protected]> wrote:
hi
i'm using owfs v 2.7.13
when i do simulation conversion... everything works fine .. but when any of
sensors is in range of 80-95 degree,
result will fail and owserver is doing :
DEBUG: Transaction readin = 0
DEBUG: Transaction CRC8 = 0
DEBUG: Transaction end = 0
DEBUG: Temp error. Try unpowered long temperature conversion -- 1500 msec
after that, it reads the result :S
and total time for one temp result is about 3,5 seconds...
anybody know a solution for this?
ps. platform is avr32 and everything else works just great!
sry for my bad english
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