dctool, Shearwater Predator and macos

[Peter B]

Hi Henrik,
I have a Shearwater Teric. On Windows I have to remove the device from the “Paired” list in the OS and then discover and add it again every time I want to download.
Perhaps you need to do the same in MacOs.. 
Regards
Peter


> On 5 Dec 2022, at 11:27, Henrik B A <henrik at synth.no> wrote:
> 
> On Mon, Dec 5, 2022 at 10:26 AM Jef Driesen <jef at libdivecomputer.org> wrote:
>> 
>> You didn't enable verbose mode (-v), so I can't see the communication in the
>> above log. I looks like you're experiencing a timeout on the very first request
>> that gets send to the dive computer. That means there is no response from the
>> dive computer.
> 
> Here's a verbose retry. I have rebooted the computer & DC, but nothing
> has changed:
> 
> $  dctool -v -l predator-download.log -f predator download -f raw -o
> predator-download.raw /dev/tty.Predator
> DATETIME 2022-12-05T10:19:03Z (1670235543)
> VERSION 0.7.0
> Opening the I/O stream (serial, /dev/tty.Predator).
> INFO: Open: name=/dev/tty.Predator
> Opening the device (Shearwater Predator).
> INFO: Configure: baudrate=115200, databits=8, parity=0, stopbits=0,
> flowcontrol=0
> INFO: Timeout: value=3000
> INFO: Sleep: value=300
> INFO: Purge: direction=3
> Registering the event handler.
> Registering the cancellation handler.
> Downloading the dives.
> Event: progress 0.00% (0/10000)
> INFO: Write: size=15, data=FF010B00350034DD000000020080C0
> INFO: Read: size=0, data=
> ERROR: Failed to receive the packet. [in shearwater_common.c:239
> (shearwater_common_slip_read)]
> ERROR: Failed to receive the response packet. [in
> shearwater_common.c:358 (shearwater_common_transfer)]
> ERROR: Error downloading the dives. [in dctool_download.c:228 (download)]
> ERROR: Timeout
> 
>> For the Predator, under the hood downloading a memory dump or dives are exactly
>> the same operations. So it's expected that if downloading a memory dump fails,
>> downloading dives will fail too.
> 
> OK, thanks for the clarification.
> 
>> After a successful download, we send a disconnect command to the dive computer.
>> That causes the bluetooth mode to terminate. Did you re-enabled the bluetooth
>> connection on your Predator before re-trying? I don't really know when and how
>> the /dev/tty.Predator device node appears on Mac, but maybe you also have to
>> re-connect at the OS level, to re-create the device node as well?
> 
> On the macOS I have to manually select the Predator in the Bluetooth
> settings, only then /dev/tty.Predator is created.
> 
> Anything more I should try?  Really can't understand what I did the
> first time it succeeded.  Random timing issue?
> 
> Henrik
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