Hi Uwe, and all,
Thermocouple users, please raise your hands now!
We have a bug report at
https://github.com/owfs/owfs/issues/11
complaining the thermocouple value reported by owfs is way too low.
Reading the MAX31850 / MAX31851 datasheet,
https://datasheets.maximintegrated.com/en/ds/MAX31850-MAX31851.pdf
page 13 (table 2), I read the cold junction temperature and the
thermocouple temperature are off by a factor of 16, which is roughly
what the user reported.
Now, in
https://github.com/owfs/owfs/blob/master/module/owlib/src/c/ow_1820.c#L963
I see there's a separate resolution entry for the thermocouple
binary->float conversion, but it's commented out and uses the cold
junction resolution instead of the thermocouple resolution.
Paul added that line and Uwe worked on the function, so before changing
anything, I ask if this is intended.
Kind regards
Jan
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