Wi-Fi® + Bluetooth® + 802.15.4のトピックRe: Edgefast bluetooth not working with Android 14 using AVRCP fragmented messages

Edgefast bluetooth not working with Android 14 using AVRCP fragmented messages

danix2k-dxc — Thu, 27 Jun 2024 10:29:31 GMT

Hello everyone,

I'm using an i.MXRT1170-EVK (not B version) and I'm trying to connect my phone to the board. I modified the HW for the BT external micro (I'm using a 1ZM Murata M2 chip) and I'm trying to retrieve GET ELEMENT Attribute from my phone using evkmimxrt1170_edgefast_bluetooth_shell. Here we are talking about AVRCP profile to retrive media information from the phone.

It seems that Edgefast BT dosen't handled fragmented packet sent by Android 14; the example goes into an ASSERT following the steps below:

bt.init
br.connect <phone MAC addr> //Connect to an Android 14 phone - mine is a Samsung A53
avrcp.init_ct
avrcp.ctl_connect (before performing this step, make sure BR is still connected)
avrcp.ct_test_case 18 // to retrive getAttribute Element

At this point we go through an ASSERT because Android 14 sends a fragmented message but Edgefast BT try to parse this message as if it were completed and we have the assert in net buf API (byte missing).

Can someone check this behavior and tell me if an Edgefast BT version is expected to fix this behavior with the newest Android version? OR can someone tell me if we can use a more reliable BT stack implementation for NXP rt1170 board - also if you have to pay for it?

Thanks.

Re: Edgefast bluetooth not working with Android 14 using AVRCP fragmented messages

Ricardo_Zamora — Fri, 21 Jun 2024 16:04:38 GMT

Hello,

Thank you for the information. I am checking this situation. Please give me some time to handle this.

As soon as I have something to share, I will let you know.

Regards,

Ricardo

Re: Edgefast bluetooth not working with Android 14 using AVRCP fragmented messages

Ricardo_Zamora — Tue, 25 Jun 2024 17:29:22 GMT

Hi,

Could you please help me confirm your WiFi device?

Regards,

Ricardo

Re: Edgefast bluetooth not working with Android 14 using AVRCP fragmented messages

danix2k-dxc — Thu, 27 Jun 2024 10:30:50 GMT

Hello,

I'm using a Murata 1ZM M2 module; only the BT part (I previously wrote the wrong module on the main post).

I confirm a Murata 1ZM M2 module

Regards

Re: Edgefast bluetooth not working with Android 14 using AVRCP fragmented messages

Ricardo_Zamora — Fri, 26 Jul 2024 17:20:50 GMT

Hello,

I really apologize for a late reply. We have been checking you issue.

Could you please helps us checking if this behavior is happening on another Android14 devices? (Other than the Samsung A53).

Regards,

Ricardo

Re: Edgefast bluetooth not working with Android 14 using AVRCP fragmented messages

danix2k-dxc — Mon, 29 Jul 2024 10:03:24 GMT

Hello,

I tested it with another Samsung phone (S21) and with a Pixel 7 Pro.

With Pixel 7 Pro it works if the track name or the track album is shorter than 22-24 byte because it doesn't send fragmented packet.

Instead Samsung sends always a fragmented packet even if the track name or the track album is shorter.

Regards.

Re: Edgefast bluetooth not working with Android 14 using AVRCP fragmented messages

Ricardo_Zamora — Fri, 09 Aug 2024 22:08:04 GMT

Hello,

I sent you a private message.

Regards,

Ricardo