Forums - QCA9377 HCI SCO Routing

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QCA9377 HCI SCO Routing
saisreekartheek...
Join Date: 30 Jun 21
Posts: 8
Posted: Thu, 2021-07-01 00:06
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Hi,

I'm using Pico i.MX8MM. I'm trying to use it as a bluetooth speaker which I can connect to my android phone for Media Streaming and Calls.

Media Streaming is working (A2DP profile) but while on Calls (HSP/HFP profiles), It is always silent on both Receiver end and at the local speaker. The issue is same irrespective of using PulseAudio or Blues-Alsa.

When I give "hciconfig" command, I see there are no sco packets on both tx and rx side even when on calls.

root@pico-imx8mm:~# hciconfig
hci0: Type: Primary  Bus: UART
BD Address: 00:1F:7B:31:80:1B  ACL MTU: 1024:7  SCO MTU: 60:8
UP RUNNING PSCAN 
RX bytes:2268926 acl:3965 sco:0 events:290 errors:0
TX bytes:7414 acl:179 sco:0 commands:92 errors:0

The command I'm using to initially setup the hci device is,

hciattach -t 30 /dev/ttymxc0 qca 3000000 flow

Here are my Software Versions:

Linux kernel version: 4.14

BlueZ version: 5.49

bluez-Alsa version: v3.1.0-4-gb21ea62

PulseAudio: 11.1
 

Since I see "sco:0" in both "RX bytes" and "TX bytes" of "hciconfig" command, I think it is something to do with the SCO Routing. Are there any commands that I'm missing to set the SCO Routing?

 
Thanks,
S S Kartheek Adivi
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Re: QCA9377 HCI SCO Routing
saisreekartheek...
Join Date: 30 Jun 21
Posts: 8
Posted: Mon, 2021-07-12 21:39
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From my research and understanding, all I need is a "hcitool command" that switches the SCO data route from "PCM" to "HCI UART".

Is there any document for "QCA9377" which states the available hcitool commands?

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Re: QCA9377 HCI SCO Routing
matadeen
Join Date: 12 Oct 17
Posts: 29
Posted: Mon, 2021-07-12 22:35
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Dear S S Kartheek Adivi,

could you please share the BT Firmware file

No we don't have any document for the BlueZ.

Regards,

Matadeen Mishra

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Re: QCA9377 HCI SCO Routing
saisreekartheek...
Join Date: 30 Jun 21
Posts: 8
Posted: Tue, 2021-07-13 05:53
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Hi Matadeen Mishra,

I've just sent you the BT Firmware over mail. Please check it.

Thanks,

S S Kartheek Adivi

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Re: QCA9377 HCI SCO Routing
gary.bisson
Join Date: 18 Dec 17
Posts: 2
Posted: Wed, 2023-06-28 02:05
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Hi,

Can you share that firmware as I'm also interested in SCO over HCI for the qca9377-3?

I can see in the "80-WL431-26 Rev. A"  doc that Tag44 allows to disable SCO over PCM, does that mean it would then fallback into SCO over HCI?

Regards,

Gary

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