Let me focus on the OSTC3 fixed setpoint issue.

On 24-05-17 12:30, Steve wrote:
Using the latest 4.6.4 on Windows 10

See attached screen capture: subsurface-OSTC3+ccr-o2.jpg

I did update the firmware to the latest 2.15 so that may (or not) be causing
it to report incorrectly.
Downloading from my OSTC3+ diving with fixed setpoint (no connection to
actual o2 cells) in ccr mode.
It picks up that it is a ccr dive but the red setpoint line in the bottom of
the profile is at 0 and the green o2 line follows depth when it should be
table flat.
It also make all the deco and tissue heatmap calcs all incorrect.
In the past it picked up my fixed setpoint correctly and the red setpoint
and green o2 line was drawn correctly as a constant flat line and the deco
and tissue heatmap calcs were correct.

Yes, I can reproduce the issue on Windows 4.6.4. I dive a (Kiss) mCCR and combining it with an OSTC3 (not sure what the exact difference between OCTC3 and 3+ is; I am using a Bluetooth version, so I assume 3+,). As Steve, I run the OSTC3 in fixed setpoint mode. Recently, I fixed some issues related to the fixed setpoint use of the OSTC3 (which involves both Subsurface code, as well as libdivecomputer code). So, it it supposed to work, but I can confirm that it does not. That is: on Windows only, as it is working fine on Linux.

So, my question for Dirk: are you sure that the correct libdivecomputer code is packaged with the Windows version of 4.6.4? I cannot help thinking of the recent build issue we had related to that Shearwater buffer overrun problem.

--jan

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