Matter + BLE scanning

RE: Matter + BLE scanning

Amanda Hsieh — Mon, 18 Dec 2023 17:38:17 GMT

The Matter Bridge application doesn't support Openthread-based platforms.

The main use case for the bridge is to allow integrating the already existing network with Matter. We decided that the Wi-Fi solution covers more use cases, as Thread requires adding additional border router to the network, which was reported to be a problem for some of the existing networks.

RE: Matter + BLE scanning

sfemat — Mon, 18 Dec 2023 17:12:27 GMT

I'm testing the Matter Bridge application and trying to add Openthread as the transport of Matter instead of WIFI, but when I do it errors out with the usual uknown hci command.

Here is where I try to enable thread:

CONFIG_CHIP_WIFI=n
CONFIG_NET_L2_OPENTHREAD=y
CONFIG_NET_SOCKETS=y
CONFIG_NET_SOCKETS_POSIX_NAMES=y
CONFIG_NETWORKING=y
CONFIG_OPENTHREAD_COAP=y
CONFIG_OPENTHREAD_MANUAL_START=n
CONFIG_OPENTHREAD_FTD=y
CONFIG_OPENTHREAD_NORDIC_LIBRARY_FTD=y
CONFIG_OPENTHREAD=y

I'm not sure if it means that this configuration is not yet supported or there is a bug. I suspected it could be the multiprotocol child image not having the central functionality activated, but with the overflow reducing its size by that much seems unfeasible.

RE: Matter + BLE scanning

Amanda Hsieh — Mon, 18 Dec 2023 16:33:33 GMT

Hi,

[quote user="sfemat"]The bridge sample uses WIFI for Matter, what about using Thread?[/quote]

The Matter Bridge features only support matter applications.

[quote user="sfemat"]I've been having issues enabling it, as it causes the build to require multiprotocol_rpmsg child image so after adding the multiprotocol's .conf and CmakeLists line from the weather station sample it builds and I start getting the -5 error again. I tried to add CONFIG_BT_CENTRAL=y to the conf of multiprotocol but then it overflows the flash by 23488 bytes.[/quote]

What sample are you using? What do you enable?

Are you testing the Matter bridge application? If so, it doesn't require extra configs unless you want to modify the connection numbers.

[quote user="sfemat"]From what I can see there is no example of CHIP + Thread + BLE scan right?[/quote]

Unfortunately, there is no such example as your requirement.

Regards,
Amanda H.

RE: Matter + BLE scanning

sfemat — Fri, 15 Dec 2023 23:39:00 GMT

The bridge sample uses WIFI for Matter, what about using Thread?

I've been having issues enabling it, as it causes the build to require multiprotocol_rpmsg child image so after adding the multiprotocol's .conf and CmakeLists line from the weather station sample it builds and I start getting the -5 error again. I tried to add CONFIG_BT_CENTRAL=y to the conf of multiprotocol but then it overflows the flash by 23488 bytes.

From what I can see there is no example of CHIP + Thread + BLE scan right?

RE: Matter + BLE scanning

Amanda Hsieh — Thu, 30 Nov 2023 17:35:22 GMT

You could add into https://github.com/nrfconnect/sdk-nrf/blob/v2.5.0/applications/matter_bridge/src/app_task.cpp#L67-L72

-Amanda H.

RE: Matter + BLE scanning

sfemat — Thu, 30 Nov 2023 16:35:19 GMT

So if I want to add support for different peripheral ble devices with other UUIDs I have to add a class and modify some code inside the ble_providers?

RE: Matter + BLE scanning

Amanda Hsieh — Thu, 30 Nov 2023 15:42:19 GMT

Hi,

What applications are those devices running?

Please be aware that

To test the Matter bridge application with the Bluetooth LE bridged device, you also need the following:

An additional development kit compatible with one of the following Bluetooth LE samples:
- Bluetooth: Peripheral LBS
- Bluetooth: Peripheral ESP

See the Requirements section.

Do you build the sample with the following commands?

west build -b nrf7002dk_nrf5340_cpuapp -- -DCONFIG_BRIDGED_DEVICE_BT=y -DOVERLAY_CONFIG="overlay-bt_max_connections_app.conf" -Dhci_rpmsg_OVERLAY_CONFIG="absoule_path/overlay-bt_max_connections_net.conf"

Replace absolute_path with the absolute path to the Matter bridge application on your local disk.

See Configuring the number of Bluetooth LE bridged devices for the details.

-Amanda H.

RE: Matter + BLE scanning

sfemat — Thu, 30 Nov 2023 14:48:43 GMT

I'm trying the Matter Bridge application and after enabling CONFIG_BRIDGED_DEVICE_BT=y and flashing on my nrf7002-dk but matter_bridge scan is not outputting any device in the console even though I have many 5340s advertising. Do I have to modify the code to be able to scan any ble device?

RE: Matter + BLE scanning

Amanda Hsieh — Mon, 27 Nov 2023 21:04:06 GMT

Hi,

NCS v2.5.0 provides the Matter Bridge feature to scan and connect BLE devices. Here is the Matter bridge application. Hope it could help.

-Amanda H.

RE: Matter + BLE scanning

sfemat — Thu, 23 Nov 2023 21:10:39 GMT

Here is the matter light_bulb sample with just bt_le_scan_start() inside app_task.cpp and even flashing it on a 5340dk it throws error -5

devzone.nordicsemi.com/.../lightbulb_2D00_scan.zip

RE: Matter + BLE scanning

sfemat — Thu, 23 Nov 2023 14:21:48 GMT

Yes, that's the function that I'm trying to use and it's throwing error -5 because of BLE Set Scan Parameters UNKNOWN HCI COMMAND

RE: Matter + BLE scanning

Sigurd — Thu, 23 Nov 2023 12:41:55 GMT

Hi,

Amanda is out of office. So I'm replying instead.

Did you get any errors when calling bt_le_scan_start() ?

RE: Matter + BLE scanning

sfemat — Mon, 20 Nov 2023 22:38:44 GMT

Can I only add BLE advertising alongside a Matter application? I specifically need scanning like bt_le_scan_start

RE: Matter + BLE scanning

sfemat — Fri, 17 Nov 2023 21:27:50 GMT

I am trying to integrate central_uart with my Matter application as you suggested but I'm getting uart_init failed (err -88).

It's failing here:

const struct uart_driver_api *api =
	(const struct uart_driver_api *)dev->api;

if (api->callback_set == NULL) {
	return -ENOSYS;
}

I've seen from another ticket that it could be the uart_cb callback passed to the init function but mine is exactly the same as the central_uart sample. My uart device is declared in the overlay like this (and it's not disabled):

/ {
    chosen {
        nordic,nus-uart = &uart0;
    };
};

so I'm not sure what could be causing this. I've also tried changing uart mode to async, interrupt driven and other params but with no luck, and meanwhile the scan is always returning error -5.

RE: Matter + BLE scanning

Amanda Hsieh — Wed, 15 Nov 2023 20:40:02 GMT

Hi,

[quote user="sfemat"]I also tried to integrate this sample but I'm still getting error -5 from bt_le_scan_start.[/quote]

What sample are you using?

[quote user=""]

I see the Matter CHIP integration uses BLE for commissioning, so to advertise a ble service the documentation advises to use NUS.

What about scanning for ble devices and connecting to them?

[/quote]

In the Matter: Door lock sample which can advertise with NUS. See Matter Bluetooth LE with Nordic UART Service. You also can connect and test with nRF Toolbox on your Android (Android 11 or newer) or iOS smartphone (iOS 16.1 or newer). See Testing door lock using Bluetooth LE with Nordic UART Service

-Amanda H.

RE: Matter + BLE scanning

sfemat — Wed, 15 Nov 2023 17:50:47 GMT

I also tried to integrate this sample but I'm still getting error -5 from bt_le_scan_start. I'm omitting bt_enable though because CHIP seems to be already calling it

RE: Matter + BLE scanning

sfemat — Tue, 14 Nov 2023 23:57:19 GMT

I see, and what could be causing the scan function to throw unknown hci command?

RE: Matter + BLE scanning

Amanda Hsieh — Tue, 14 Nov 2023 16:33:45 GMT

Hi,

0x200b is the opcode for BLE Set Scan Parameters and 0x01 is the error code for UNKNOWN HCI COMMAND.

The Unknown HCI Command error code indicates that the Controller does not understand the HCI Command packet opcode that the Host sent. The opcode given might not correspond to any of the opcodes specified in this document, or any vendor-specific opcodes, or the command may have not been implemented.

-Amanda H.

RE: Matter + BLE scanning

sfemat — Mon, 13 Nov 2023 21:48:07 GMT

I'm trying to do the usual bt_le_scan_start(&scan_param, device_found) but with the Matter sample integrated bt_hci_cmd_send_sync fails with error 1 (opcode 0x200b status 0x01). That would translate to LE Set Scan Parameters throwing invalid address.

CHIP does enable BLE and use it without errors for Matter commissioning but I can't use it later in my software.

RE: Matter + BLE scanning

Amanda Hsieh — Mon, 23 Oct 2023 14:46:30 GMT

Hi,

Do you mean the BLE central to connect? If so, you can use Bluetooth: Central UART.

Regards,
Amanda H.

RE: Matter + BLE scanning

sfemat — Mon, 23 Oct 2023 14:12:07 GMT

No, I meant I need to scan for ble devices from the nrf5340 and connect to them.

RE: Matter + BLE scanning

Amanda Hsieh — Mon, 23 Oct 2023 13:38:54 GMT

Hi,

You can use the CHIP Tool to scan and commission. See Working with the CHIP Tool.

Regards,
Amanda H.