Too random, eh?
There are several solutions:
1. Modify the owfs source code
module/owlib/src/c/fakeread.c
change
#define Random_f (100.*Random)
to
#define Random_f (10.+27.7*Random)
(My quick Celsius to Farhenheit conversion)
2. Filter the readings in your program with a calculation that moves the
random temperature reading to the correct range.
3. Hook up a real temperature chip.
The fake adapter is really simple-minded. We don't keep an internal model of
all the chips and reasonable emulation, but simply provide a random response
in the proper format.
Paul Alfille
On Sat, Mar 7, 2009 at 12:28 PM, Mike Zimmerman <m...@mkzimms.com> wrote:
> I'm using the owfs fake environment to do some testing on a annotated
> timeline of temperatures. To setup the test environment ive run
>
> /opt/owfs/bin/owfs --fake=01,10 /mnt/1-wire/ --allow_other -F
>
> is there anyway to set the limits on the values generated so I do not end
> up with, for example, a test value of 54.12 followed by a value of 251.13
> which really throws off the range on my graph. Below i pasted a section of
> my dataset so you can see what i mean. My program in the real world will
> only be dealing with ranges from 50 to 100, so i'd like to test with a more
> realistic dataset if possible.
>
> ID tempdata temptime alert
> 12 112.5 2009-03-07 11:23:01.0 1
> 11 87.3 2009-03-07 11:22:01.0 0
> 10 173.5 2009-03-07 11:21:01.0 1
> 9 82.6 2009-03-07 11:20:01.0 0
> 8 143.5 2009-03-07 11:19:01.0 1
> 7 22.8 2009-03-07 11:18:01.0 1
> 6 147.4 2009-03-07 11:17:01.0 1
> 5 190.6 2009-03-07 11:16:01.0 1
> 4 58.6 2009-03-07 11:15:01.0 1
> 3 197.6 2009-03-07 11:14:01.0 1
> 2 203.0 2009-03-07 11:13:01.0 1
> 1 70.8 2009-03-07 11:12:01.0 0
>
>
> Mike
>
>
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