Re: OSTC over BLE experiences and questions

Jan Mulder Tue, 04 Jul 2017 06:24:51 -0700

Hi Matthias,

On 04-07-17 15:09, Matthias Heinrichs wrote:

Do you get the ending 0x4D Byte as the last byte? Then it's possiblethat the dive isn't stored correctly ("Internal pointer to the begin ofthe profile data" and "Internal pointer to the end of the profile data"are not correct). The OSTC uses the Bluetooth modules hardware handshakelines to avoid overfilling the internal buffer but that does not skipany bytes. I can't see a way that the OSTC just stops sending datawithout being stuck completely (Timeout can only happen in the Bluetoothidle loop) afterwards.
Please email me the raw data and I'll have a look here.


BT snoop file (made with btmon) is attached. Wireshark is your friend :-)

And no, the last byte is not the end 0x4D byte. I did not check theinternal pointers, but I did check the length of the profile data andthat looks a correct value for this dive (if I remember correctly,almost 19000 bytes).

In addition, I interfaced this same dive correctly over classic BT, andon the OSTC3 itself it shows correctly, so the internal loglook seemsjust fine.

And also from me a huge thanks for the support you and the company aregiving to Subsurface.


regards,

--jan

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