Re: Battery level of energy

From: Grigory Fateyev <gfborn@gmail.com>
To: linux-bluetooth@vger.kernel.org
Subject: Re: Battery level of energy
Date: Wed, 23 Jan 2019 20:27:09 +0300	[thread overview]
Message-ID: <CAAOqupzg6GN147uofDAyuFLid5QHOns0nkjOw=+=OicV=cezwA@mail.gmail.com> (raw)
In-Reply-To: <CABBYNZ+8Lkf5_f+CwXorUQhtON1hJ-Vyj0cd0QHPHGvUgq3m_A@mail.gmail.com>

It has such info:

[MDR-XB650BT]# info 00:18:09:C5:44:1E
Device 00:18:09:C5:44:1E
Name: MDR-XB650BT
Alias: MDR-XB650BT
Class: 0x240404
Icon: audio-card
Paired: yes
Trusted: yes
Blocked: no
Connected: yes
LegacyPairing: no
UUID: Headset                   (00001108-0000-1000-8000-00805f9b34fb)
UUID: Audio Sink                (0000110b-0000-1000-8000-00805f9b34fb)
UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
UUID: A/V Remote Control        (0000110e-0000-1000-8000-00805f9b34fb)
UUID: Handsfree                 (0000111e-0000-1000-8000-00805f9b34fb)

PS. Luiz, sorry for the direct copy!

ср, 23 янв. 2019 г. в 20:04, Luiz Augusto von Dentz <luiz.dentz@gmail.com>:
>
> Hi Grigory,
> On Wed, Jan 23, 2019 at 6:22 PM Grigory Fateyev <gfborn@gmail.com> wrote:
> >
> > Hello!
> >
> > I have a bluetooth headset Sony MDR-XB650BT.
> >
> > # hcitool info 00:18:09:C5:44:1E
> > Requesting information ...
> > BD Address:  00:18:09:C5:44:1E
> > OUI Company: CRESYN (00-18-09)
> > Device Name: MDR-XB650BT
> > LMP Version: 4.0 (0x6) LMP Subversion: 0x2576
> > Manufacturer: Cambridge Silicon Radio (10)
> > Features page 0: 0xff 0xff 0x8f 0xfe 0x9b 0xff 0x59 0x87
> > <3-slot packets> <5-slot packets> <encryption> <slot offset>
> > <timing accuracy> <role switch> <hold mode> <sniff mode>
> > <park state> <RSSI> <channel quality> <SCO link> <HV2 packets>
> > <HV3 packets> <u-law log> <A-law log> <CVSD> <paging scheme>
> > <power control> <transparent SCO> <broadcast encrypt>
> > <EDR ACL 2 Mbps> <EDR ACL 3 Mbps> <enhanced iscan>
> > <interlaced iscan> <interlaced pscan> <inquiry with RSSI>
> > <extended SCO> <EV4 packets> <EV5 packets> <AFH cap. slave>
> > <AFH class. slave> <3-slot EDR ACL> <5-slot EDR ACL>
> > <sniff subrating> <pause encryption> <AFH cap. master>
> > <AFH class. master> <EDR eSCO 2 Mbps> <EDR eSCO 3 Mbps>
> > <3-slot EDR eSCO> <extended inquiry> <simple pairing>
> > <encapsulated PDU> <non-flush flag> <LSTO> <inquiry TX power>
> > <EPC> <extended features>
> > Features page 1: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
> >
> > I'd like to get the energy level at least in shell. In which direction
> > I should look for? How to know if my device has GATT support? If it
> > connected with Android smartphone, where Android version is < 6.0, it
> > has an icon with level in percents. I want to get the same on my linux
> > machine.
>
> bluetoothd should be able to detect if there is a battery service,
> well at least if you are connect over LE, note that in past there
> exists ways to fetch the battery level of AVRCP and HFP via AT
> commands, so perhaps Android is using one of those, btw you should be
> able to see what bluetoothd has discover with:
>
> bluetoothctl> info <bdaddr>
>
> > Thank you!
> >
> > --
> > Grigory
>
>
>
> --
> Luiz Augusto von Dentz

-- 
Grigory