can't download Oceanic VT3 on linux

[Hamish Moffatt]

On 12/03/14 21:02, Jef Driesen wrote:
> On 2014-03-12 01:20, Hamish Moffatt wrote:
>> On 12/03/14 10:57, Linus Torvalds wrote:
>>> Sounds like some other timing difference between Linux and Windows.
>>> Maybe Jef can make sense to the logs (and do you have logs with timing
>>> from windows for Jef to compare?)
>>>
>> Here's a log from Windows. There appears to be a whole lot less timing
>> precision so it's a bit hard to compare, other than noting the absence
>> of NAKs from the VT3.
>
> That's due to the limited precision (in the order of several tens of 
> milliseconds) of the Windows GetTickCount() function. Try with the 
> attached patch instead, which uses the QueryPerformanceCounter() 
> function instead. That's the same function I'm using for the 
> half-duplex timing. There is a pre-build binary here:
>
> http://www.libdivecomputer.org/builds/experimental/windows/universal-timings.exe 
>

There seems to be a heap of read-write turnaround; there's 14ms+ in some 
of the early commands although it's as low as 1.5ms later. But there's 
100ms sleeps after each read too - that's not in the regular build though?

[0.000026] DATETIME 2014-03-12T11:54:45Z (1394625285)
[0.001183] VERSION 0.5.0-devel (a712c8781d0e2065f6e9b7768286546c9495defe)
[0.001591] Opening the device (Oceanic VT3, COM3).
[0.003046] INFO: Open: name=COM3
[0.042081] INFO: Configure: baudrate=38400, databits=8, parity=0, 
stopbits=1, flowcontrol=0
[0.047021] INFO: Timeout: value=3000
[0.047352] INFO: Sleep: value=100
[0.147300] INFO: Flush: queue=3, input=0, output=0
[0.147716] INFO: Sleep: value=100
[0.247408] INFO: Write: size=2, data=8400
[0.258620] INFO: Read: size=1, data=5A
[0.258969] INFO: Read: size=17, data=4F43452056543320523244203531324BBF
[0.259722] Registering the event handler.
[0.259994] Registering the cancellation handler.
[0.260253] Downloading the memory dump.
[0.260571] Event: vendor=4F43452056543320523244203531324B
[0.263368] Event: progress 0.00% (0/65536)
[0.263657] INFO: Sleep: value=100
[0.357385] INFO: Write: size=4, data=B1000000
[0.370210] INFO: Read: size=1, data=5A
[0.370630] INFO: Read: size=17, data=0416041120081001425800730000000075
[0.370905] Event: progress 0.02% (16/65536)
[0.371204] INFO: Sleep: value=100
[0.467360] INFO: Write: size=4, data=B1000100
[0.481764] INFO: Read: size=1, data=5A
[0.482221] INFO: Read: size=17, data=6701DA064204E506E206DC06FF0FAAFBF6
[0.482495] Event: progress 0.05% (32/65536)
[0.482800] INFO: Sleep: value=100
[0.578330] INFO: Write: size=4, data=B1000200
[0.593307] INFO: Read: size=1, data=5A
[0.593706] INFO: Read: size=17, data=0000DC06FF0FDC06FF0F00000000AA8A14
[0.593974] Event: progress 0.07% (48/65536)
[0.594252] INFO: Sleep: value=100
[0.687366] INFO: Write: size=4, data=B1000300
[0.688852] INFO: Read: size=1, data=5A
[0.704842] INFO: Read: size=17, data=890E370D00011B0B670542053250AAE1C2
[0.705245] Event: progress 0.10% (64/65536)
[0.705642] INFO: Sleep: value=100
[0.797355] INFO: Write: size=4, data=B1000400
[0.800413] INFO: Read: size=1, data=5A
[0.816394] INFO: Read: size=17, data=300220028003500530BEB0BB0000000085
[0.816772] Event: progress 0.12% (80/65536)
[0.817042] INFO: Sleep: value=100
[0.917352] INFO: Write: size=4, data=B1000500
[0.927884] INFO: Read: size=1, data=5A
[0.943845] INFO: Read: size=17, data=A014000300002C01980805A0022100024E
[0.944209] Event: progress 0.15% (96/65536)
[0.944489] INFO: Sleep: value=100
[1.037353] INFO: Write: size=4, data=B1000600
[1.039431] INFO: Read: size=1, data=5A
[1.055386] INFO: Read: size=17, data=3899000099003102E9050400000000008F
[1.055728] Event: progress 0.17% (112/65536)
[1.056009] INFO: Sleep: value=100
[1.147369] INFO: Write: size=4, data=B1000700
[1.151004] INFO: Read: size=1, data=5A
[1.166952] INFO: Read: size=17, data=0906290000000000003C00000100000277
[1.167412] Event: progress 0.20% (128/65536)
[1.167836] INFO: Sleep: value=100
[1.267344] INFO: Write: size=4, data=B1000800
[1.278484] INFO: Read: size=1, data=5A
[1.294425] INFO: Read: size=17, data=A9A6C9AAAAAAAAAAAA0000000000000014
[1.294795] Event: progress 0.22% (144/65536)
[1.295084] INFO: Sleep: value=100
[1.387361] INFO: Write: size=4, data=B1000900
[1.390006] INFO: Read: size=1, data=5A
[1.406022] INFO: Read: size=17, data=6400000300001400980805A00251000215
[1.406352] Event: progress 0.24% (160/65536)
[1.406627] INFO: Sleep: value=100
[1.497361] INFO: Write: size=4, data=B1000A00
[1.501549] INFO: Read: size=1, data=5A
[1.517551] INFO: Read: size=17, data=0000000000000000000000000000000000
[1.517983] Event: progress 0.27% (176/65536)
[1.518277] INFO: Sleep: value=100
[1.617345] INFO: Write: size=4, data=B1000B00
[1.629113] INFO: Read: size=1, data=5A
[1.645030] INFO: Read: size=17, data=42056EA46350460014AA1001438348204F
[1.645387] Event: progress 0.29% (192/65536)
[1.645664] INFO: Sleep: value=100
[1.737342] INFO: Write: size=4, data=B1000C00
[1.740598] INFO: Read: size=1, data=5A
[1.756554] INFO: Read: size=17, data=43142CA56F40510015AA541324064720DF
[1.756894] Event: progress 0.32% (208/65536)
[1.757172] INFO: Sleep: value=100
[1.857351] INFO: Write: size=4, data=B1000D00
[1.868105] INFO: Read: size=1, data=5A
[1.884047] INFO: Read: size=17, data=4414FEA35D40450015AA240440114D2080
[1.886750] Event: progress 0.34% (224/65536)
[1.887110] INFO: Sleep: value=100
[1.987360] INFO: Write: size=4, data=B1000E00
[1.995558] INFO: Read: size=1, data=5A
[2.011552] INFO: Read: size=17, data=4524B9A46840450015AA530119824B20CC
[2.011982] Event: progress 0.37% (240/65536)
[2.012347] INFO: Sleep: value=100
[2.108153] INFO: Write: size=4, data=B1000F00
[2.123131] INFO: Read: size=1, data=5A
[2.123521] INFO: Read: size=17, data=4624FEA35D40470015AA080113844920B7
[2.123794] Event: progress 0.39% (256/65536)
[2.124093] INFO: Sleep: value=100



Hamish