IOT747 Team

[IOT747 Team]

Hi,
For now, you would need to reopen the connection from the transmitter when you see a CLOSE notification.
IOT747

[IOT747 Team]

Hi,

I tested and I do get:

CLOSE_OK 14 BLE 245DFC021572
LC3_VOICE_STOP 19
CLOSE_OK 19 UTXV 245DFC021572

On both sides when I have a Link Loss.

Can you recheck that you don’t get this?

IOT747

[IOT747 Team]

You need to set aptx-lowlatency. Do you have a license? You should see (aptX Lossless: ON when you boot).

See below the example.

Board1:

restore
IOT747 Copyright 2022
AudioAgent IDC777 V3.1.83
Build: 0400427b
Bluetooth address 245DFC02157A
Ready
aptX Lossless: ON
PAIR_PENDING
set CODEC=OFF OFF OFF OFF OFF OFF OFF ON ON
OK
set UCAST_CONFIG_TXM=2 48 2
OK
set profiles=on 0 1 0 1 1 1 1
OK
write
(then reset)

pair 245DFC020000
PENDING
PAIR_OK 245DFC020000
PAIR_OK_LE 245DFC020000
open 245DFC020000 utxm
PENDING
OPEN_OK 14 BLE 245DFC020000
OPEN_OK 18 UTXM 245DFC020000
LC3_MEDIA_START 18 SOURCE 8 CONTEXT 0
ABS_VOL 18 197
status
STATE CONNECTABLE[ON] DISCOVERABLE[IDLE] ADVERTISING[ON] SCAN_UNI[OFF]
LINK 14 CONNECTED BLE 245DFC020000 MTU 250
LINK 18 CONNECTED UTXM 245DFC020000 STREAMING APTX GAME_WITH_VBC SNK_RATE 48000 SNK_SDU_INT 5000 SNK_SDU_SIZE 205 SNK_RTN 3 SNK_P_DELAY 6400 SNK_MAX_LAT 5 SRC_RATE 16000 SRC_SDU_INT 5000 SRC_SDU_SIZE 40 SRC_RTN 7 SRC_P_DELAY 33000 SRC_MAX_LAT 9
OK

open 245DFC020010 utxm
PENDING
OPEN_OK 24 BLE 245DFC020010
OPEN_OK 28 UTXM 245DFC020010
LC3_MEDIA_START 28 SOURCE 9 CONTEXT 0

status
STATE CONNECTABLE[ON] DISCOVERABLE[IDLE] ADVERTISING[ON] SCAN_UNI[OFF]
LINK 14 CONNECTED BLE 245DFC020000 MTU 250
LINK 18 CONNECTED UTXM 245DFC020000 STREAMING APTX GAME_WITH_VBC SNK_RATE 48000 SNK_SDU_INT 5000 SNK_SDU_SIZE 205 SNK_RTN 3 SNK_P_DELAY 6400 SNK_MAX_LAT 5 SRC_RATE 16000 SRC_SDU_INT 5000 SRC_SDU_SIZE 40 SRC_RTN 7 SRC_P_DELAY 33000 SRC_MAX_LAT 9
LINK 24 CONNECTED BLE 245DFC020010 MTU 250
LINK 28 CONNECTED UTXM 245DFC020010 STREAMING APTX GAME_WITH_VBC SNK_RATE 48000 SNK_SDU_INT 5000 SNK_SDU_SIZE 205 SNK_RTN 3 SNK_P_DELAY 6400 SNK_MAX_LAT 5 SRC_RATE 16000 SRC_SDU_INT 5000 SRC_SDU_SIZE 40 SRC_RTN 7 SRC_P_DELAY 33000 SRC_MAX_LAT 9
OK

Board2:

restore
IOT747 Copyright 2022
AudioAgent IDC777 V3.1.70
Build: 0400427b
Bluetooth address 245DFC020000
Ready
aptX Lossless: ON
PAIR_PENDING
set CODEC=OFF OFF OFF OFF OFF OFF OFF ON ON
OK
write
OK
reset
IOT747 Copyright 2022
AudioAgent IDC777 V3.1.70
Build: 0400427b
Bluetooth address 245DFC020000
Ready
aptX Lossless: ON
PAIR_PENDING
PAIR_OK 245DFC02157A
PAIR_OK_LE 245DFC02157A
OPEN_OK 14 BLE 245DFC02157A
OPEN_OK 16 URXM 245DFC02157A
LC3_MEDIA_START 16 SOURCE 5 CONTEXT 8
ABS_VOL 16 197
status
STATE CONNECTABLE[ON] DISCOVERABLE[OFF] ADVERTISING[ON] SCAN_UNI[OFF]
LINK 14 CONNECTED BLE 245DFC02157A MTU 250
LINK 16 CONNECTED URXM 245DFC02157A STREAMING APTX GAME_WITH_VBC SNK_RATE 48000 SNK_SDU_INT 5000 SNK_SDU_SIZE 205 SNK_P_DELAY 6400 SNK_TRANS_LAT 3162 SRC_RATE 16000 SRC_SDU_INT 5000 SRC_SDU_SIZE 40 SRC_P_DELAY 33000 SRC_TRANS_LAT 8162
OK

[IOT747 Team]

Hello Abdo,

For bidirection links, you for now have 2 options:

1) Classic Bluetooth: AGHFP and HFP: This will give you a 16kHz mSBC encoded stream. Latency is about 50ms.

2) LE Audio: In this one, you can choose the sampling rate. However, this was only tested up to 32Khz. I don’t think 48k is supported by the standard,

Can you file a ticket at https://www.iot747.com/support/open.php about this? This will allow it to be added to feature requests.

Also, there is one option, the gaming mode. In this option, you get a 48k (out) and a 16k (in) connection. Search gaming in the UART command manual.

IOT747 Support

[IOT747 Team]

Hi,
In the new release, we have a new CONFIG AUTO_AUDIO where you can set it so the IDC777 can Auracast from start. Please file a ticket at https://www.iot747.com/support/open.php and we can give you an early version of the firmware. It is currently being tested for release.
IOT747

[IOT747 Team]

Spam

[IOT747 Team]

Hello,
The IDC777 allows to detect automatically if it is an earbud. But you have to enable this capability. Can you try and change SSP_CAPS=3 ON? (Syntax: SSP_CAPS= ). Then do a WRITE and RESET and try and pair and connect to the first earbud as you would normally. The IDC777 should then detect the second earbud automatically. However, this is a new feature we introduced so please test and let us know. Also, some products have slightly different implementations.
IOT747

[IOT747 Team]

Hi,
This feature is not available. But we will include it in the list of featrues requested. Thanks.
IOT747

[IOT747 Team]

Hi George,
Yes, one IDC777 can stream 4 Audio streams at the same time using Auracast (LE Audio).
Please note this is 4 Mono streams. Otherwise, you can also stream 2 Stereo streams.
IOT747

[IOT747 Team]

Please upgrade to the latest https://1drv.ms/u/s!ArxXgcuMmkOHlt5u-x1xqy99oC_n7A?e=HtCklW

[IOT747 Team]

Please upgrade to the latest https://1drv.ms/u/s!ArxXgcuMmkOHlt5u-x1xqy99oC_n7A?e=HtCklW

[IOT747 Team]

We got spammed so we need to clean up the Forum. We will still answer but you can also post Support tickets for a faster reply for now

[IOT747 Team]

Hi,
Yes, the CVC is included with the IDC777. You can enable or disable it using the first parameter of HFP_CONFIG. There is no manual about it. You simply enable it and it will do the echo cancellation and noise suppression. If tuning is needed, we can provide the service but it is a paid service. We suggest you simply try it first and see if it is good enough. Also, you have to make sure that your mechanical design is good (i.e. microphone away from the speaker).
IOT747

[IOT747 Team]

Hi,
With the IDC777, the CVC is already included. So you do not need a license. It is enabeld by default (Look under HFP_CONFIG).
So it shoudl work as before. Thanks.
IOT747

[IOT747 Team]

Hi,
Some Zen headphones have old firmware that does not work wit Unicast. They have been unstable generally. Please try and upgrade your headphones firmware using the Creative App and that usually would make it work.
IOT747

[Author]

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