Oceanic OCS dive mode

[Kristaps Dzonsons]

Hello,

After finding that our Oceanic OCS (model 0x4450 as in the source)
produced garbage values when not in dive ("normal") mode, but was still
producing a log of free dives, I found that the dive mode is indeed
exported.

With the enclosed patch, I'm able to properly process free dives, gauge
dives, and normal dives with the proper sampling.  Yay!  I dove with
another computer at the same time and compared the results, just to be sure.

That being said, I've also enclosed the vendor data being exported with
each sample.  Does anybody have an idea what the latter two bytes might
mean?  The former is the depth in 1/16ths foot.  I figured on it being
temperature or maximum depth, but can't correlate.

Best,

Kristaps
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# Note: 1 second sampling.
# Starting temperature is about 21 degrees C.
# Key: depth, unknown, depth-as-metres.
b300 5702 3.41
ce00 5702 3.92
e900 5702 4.44
0301 5702 4.93
1e01 5702 5.45
3901 5702 5.96
5001 5702 6.40
6401 5702 6.78
7b01 2502 7.22
9301 ef01 7.68
a701 9601 8.06
be01 6e01 8.50
d501 4f01 8.93
ed01 1701 9.39
fa01 0101 9.64
0e02 ee00 10.02
2902 df00 10.53
3902 c100 10.84
4302 b300 11.03
4702 a700 11.11
5b02 a700 11.49
6b02 9d00 11.79
7502 9500 11.98
7902 8d00 12.06
7f02 8d00 12.17
8902 8d00 12.36
9702 8600 12.63
9d02 8000 12.74
a102 8000 12.82
a102 7a00 12.82
a102 7a00 12.82
a402 7a00 12.88
a702 7a00 12.93
a702 7a00 12.93
a702 7a00 12.93
ae02 7a00 13.07
bf02 7a00 13.39
cc02 7400 13.64
d302 6c00 13.77
d602 6500 13.83
d902 6500 13.89
d602 6500 13.83
d902 6500 13.89
e002 6500 14.02
e002 5f00 14.02
dd02 5f00 13.96
dd02 6400 13.96
dd02 6400 13.96
dd02 6400 13.96
e302 6400 14.08
e302 5e00 14.08
e002 5e00 14.02
d902 5e00 13.89
d602 6400 13.83
d602 6400 13.83
d302 6400 13.77
d602 6400 13.83
e002 6400 14.02
e002 5e00 14.02
dd02 5e00 13.96
d902 6400 13.89
d902 6400 13.89
dd02 6400 13.96
e302 6400 14.08
d602 5e00 13.83
cf02 6400 13.70
d602 6b00 13.83
e002 6400 14.02
e002 5e00 14.02
e302 5e00 14.08
e702 5e00 14.15
ed02 5e00 14.27
ea02 5e00 14.21
e702 5e00 14.15
e302 5e00 14.08
e702 5e00 14.15
e702 5e00 14.15
ed02 5e00 14.27
e702 5e00 14.15
e002 5e00 14.02
dd02 5e00 13.96
e002 6400 14.02
dd02 5e00 13.96
e302 6400 14.08
ea02 5e00 14.21
ea02 5e00 14.21
e002 5e00 14.02
dd02 5e00 13.96
e002 6400 14.02
e002 5e00 14.02
e702 5e00 14.15
d902 5e00 13.89
cf02 6400 13.70
c902 6b00 13.58
cc02 6b00 13.64
c502 6b00 13.51
b102 6b00 13.13
a702 7300 12.93
9a02 7910 12.69
9702 7e10 12.63
8902 7e10 12.36
7f02 8410 12.17
7f02 8b10 12.17
8302 8b10 12.25
6f02 8410 11.87
5b02 9310 11.49
5402 9c10 11.35
4302 9c10 11.03
2902 a610 10.53
2202 bf10 10.40
0702 bf10 9.89
e901 dc10 9.32
dc01 fe10 9.07
c101 1511 8.55
a301 3011 7.98
8c01 6c11 7.54
6e01 c111 6.97
4d01 2112 6.34
3201 5712 5.83
1701 5712 5.31
ef00 5712 4.55
ce00 5712 3.92
b300 5712 3.41
9200 5712 2.78