Re: +BIEV dissection improvements

[Alexis La Goutte <alexis.lagoutte () gmail com>]

Hi Damian,

I think, it will be better to open a issue on bugtracker with the pcap

Cheers

On Thu, Jun 4, 2020 at 8:49 PM Damian Stevenson <stevensondam () gmail com>
wrote:

> Sorry for the duplicate mail, Gmail app is a mess and doesn't allow to
> convert to plain text.
>
> Would to request improvements on HFP dissection: recognize value as
> battery percentage.
>
> On my Samsung Galaxy Buds, +BIEV is used to receive battery level of
> the earbuds over bluetooth.
> The format is as follows: "AT+BIEV=2,95"
> Where the 2 is the value to design that next comes common battery
> level. After the comma there can be any integer value (preferably
> 0~100), which represents the minimum battery level shared by both
> earbuds, not including the charging case. One of them can be
> disconnected.
> Example: left=100, right=95, charging case=40 => reported battery
> level is 95. After the decimal values closes with 0x0d9c.
>
> Hexdump of wireshark line pcap:
> 00000000: 62 74 73 6E 6F 6F 70 00  btsnoop.
> 00000008: 00 00 00 01 00 00 03 EA  ........
> 00000010: 00 00 00 1B 00 00 00 1B  ........
> 00000018: 00 00 00 01 00 00 00 00  ........
> 00000020: 00 E2 84 2E F4 BD D4 3C  .......<
> 00000028: 02 0C 20 16 00 12 00 43  .. ....C
> 00000030: 00 21 FF 1B 01 41 54 2B  .!...AT+
> 00000038: 42 49 45 56 3D 32 2C 39  BIEV=2,9
> 00000040: 35 0D 9C                 5..
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