Audio Streaming to a headset from Laird Sterling EWB Module (CYW4343W)

[andyinsuffolk]

Hi there,

I am looking for an app note or more importantly some WICED sample code which will allow me to,  firstly connect a generic BT headset/speaker to the Sterling EWB (CYW4343W).   Secondly how to stream an audio signal connected to the BT_PCM pin on the CYW4343W to the headset.  There is no requirement to send audio from the headset back to the EWB module.

[AnjanaM_61]

Hello @andyinsuffolk 

WICED Studio SDK do not have A2DP source library for CYW4343W. 

It supports A2DP sink and you can refer to example WICED-Studio-6.4\43xxx_Wi-Fi\apps\snip\bluetooth_audio

Regards,
Anjana

[andyinsuffolk]

Hello Anjana,

Thank you for the reply.  

I have installed the latest version of WICED 6.6 and I cannot see the bluetooth _audio snip folder.  Is it possible to manually install this snip?

Also,  our use case is that we need to transmit an alarm tone to a BT connected headset/ear piece.  We do not necessarily need the hi quality that A2DP provides, are we able to use the HSP profile with the CYW4343W ?

Regards,

Andy

[BragadeeshV]

Hi @andyinsuffolk ,

Thanks for the update. The controller 4343W supports HSP/ AG profile but WICED-SDK does not have libraries to support this feature. Also, we do not recommend using WICED SDK for latest designs. 

You could evaluate some other Linux or android based host platforms with a different BT host stack that supports this profile. You could also check with Laird for suggestions on the host platform.

Could you please provide more information on your host platform and your software environment?

[andyinsuffolk]

Hi @BragadeeshV ,

The Laird module uses  STM32F412 microcontroller as the host.  But the system we are adding this Audio feature to has an STM32L43.   - See below

Ideally we need a combined Wifi  / BT radio chip which has software support for A2DP Audio source, which we can use with the STM32L43 we have in our main system 

Regards,

Andy

[BragadeeshV · Accepted solution]

Hi @andyinsuffolk ,

Unfortunately, the support for HSP profile is not available in WICED-SDK. Also kindly note that we do not recommend using WICED-SDK for new designs. Also, 4343W is an old chip and we do not recommend for new designs.