Not able to connect to "BorderRouter-AP"

[N.UMAMAHESWAR REDDY]

Hi all,

I have a problem where I'm able to see BorderRouter-AP SSID and when I tried to connect through my mobile it is not connecting, but just showing as saved.

I'm using Raspberry Pi 3B with nrf52840 dongle for  BorderRouter setup in RCP design and did all the configuration correctly and could able to see the required services running, but facing issue on connecting to Wi-Fi AP. Tried with different mobiles but couldn't see any change.

Used ot-br-posix repo for configuration in Pi 3B.

Followed Nordic Semiconductor Infocenter instructions to program dongle with the supported firmware. 

12345678 is the password that I tried to connect.

Checked in the network manger file in ot-br-posix repo, and can see the same password written there.

I would be very thankful if I get any solution or suggestion to resolve this issue.

Thank you.

[Kangping Dong]

Hi,

Can you share the information below?

1. the OTBR commit
2. the commands you used to set up OTBR

BRs,

kangping 

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[N.UMAMAHESWAR REDDY]

Thanks for your reply

Cloned the  ot-br-posix repo

used

 cd ot-br-posix

./script/bootstrap

./script/setup
for wpanutund : /etc/wpantund.conf.

Config:NCP:SocketPath "/dev/ttyACM0"

[Kangping Dong]

The Wi-Fi AP setup is by default disabled in the latest OTBR repo.

you need to set up with

BORDER_ROUTING=0 NETWORK_MANAGER=1 ./script/setup

If you need the AP.

 

See https://openthread.io/guides/border-router/build.

BRs,

Kangping

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[N.UMAMAHESWAR REDDY]

Sincere Apologies Kangping,

By mistake I mentioned as RCP instead of NCP.

I followed steps mentioned in OpenThread Border Router - nRF52840 MDK USB Dongle (makerdiary.com)  
And If I'm going for Automatic setup of Wi-Fi AP, Do I need to follow the same step(setting up Wi-Fi) as you mentioned above?

[Kangping Dong]

If you are trying to use the latest OTBR main branch, you will need to

1. build a RCP firmware: https://openthread.io/codelabs/openthread-hardware#0

2. bootstrap and setup OTBR with below commands:

NETWORK_MANAGER=1 ./script/bootstrap

BORDER_ROUTING=0 NETWORK_MANAGER=1 ./script/setup 

 

BRs,

Kangping

On Mon, Mar 22, 2021 at 5:10 PM N.UMAMAHESWAR REDDY <n.umamahes...@gmail.com> wrote:

Sincere Apologies Kangping,

By mistake I mentioned as RCP instead of NCP.

I followed steps mentioned in OpenThread Border Router - nRF52840 MDK USB Dongle (makerdiary.com)  

And Do I need to follow the same step(setting up Wi-Fi) as you mentioned above?

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[N.UMAMAHESWAR REDDY]

I'm using wpantund/master branch and configuring in NCP design, Do I need to follow the above mentioned steps?

[Kangping Dong]

I'm using wpantund/master branch and configuring in NCP design, Do I need to follow the above mentioned steps?

You don't need to.

BRs,

Kangping

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[N.UMAMAHESWAR REDDY]

Then what might be the problem?? 
Even though I'm able to see BorderRouter-AP SSID in my mobile and trying to connect using 12345678 Password, I'm not able to connect to Wi-Fi AP, it's just showing as saved.
Tried with different mobiles also but still able to see same results.

[Jonathan Hui]

There seems to be a regression with the latest Raspberry Pi OS image.

Can you try using a separate Wi-Fi AP? You can try building with:

NETWORK_MANAGER=0 ./script/bootstrap

NETWORK_MANAGER=0 ./script/setup

Then use raspi-config to connect the RPi to your Wi-Fi AP.

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Jonathan Hui

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[N.UMAMAHESWAR REDDY]

Thanks for your reply Jonathan Hui

I followed these steps 

NETWORK_MANAGER=0 ./script/bootstrap

NETWORK_MANAGER=0 ./script/setup

And built a separate Wi-Fi AP by following the steps mentioned in Wi-Fi AP

Even after that I could able to see BorderRouter-AP SSID, then I disabled Network manager using nmcli disable and stop commands.

Then I were able to see the SSID that I configured and when I tried to connect with password, it is showing as obtaining Ip address and after some time it shows as avoided poor connection even though my mobile is next to Raspberry Pi and signal strength is excellent. 

I checked for the hostapd and dnsmasq services after trying with separate Wi-Fi AP, can see that dnsmasq.service is failed and showing the errors as Failed to allocate directory: too many open files 

[Jonathan Hui]

If you have previously run the setup with `NETWORK_MANAGER=1` (i.e. without specifying `NETWORK_MANAGER=0`), then you will need to start from a fresh Raspberry Pi OS image to disable network manager.

Note that `NETWORK_MANAGER=0` is now the default in the main branch. Is it possible for you to use the main branch instead (this would also mean migrating away from wpantund)?

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[N.UMAMAHESWAR REDDY]

I tried with Main branch earlier and haven't got any option to configure Wpantund and trying with wpantund/master branch. It is not possible for Raspberry Pi to work as OpenThread Border Router without wpantund.service I guess.

[Kangping Dong]

It is not possible for Raspberry Pi to work as OpenThread Border Router without wpantund.service I guess.

Not really. OTBR can work without the wpantund and only a RCP device is needed to be attached.

See https://openthread.io/platforms#radio-co-processor-rcp.

If it is possible to upgrade to use the latest OTBR and openthread code, you can follow this codelab and guide to set up the latest OTBR.

BRs,

Kangping

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[N.UMAMAHESWAR REDDY]

Sorry, I'm confused now as this is the first time I'm working on OpenThread related stuff.

I have Raspberry PI 3B and Nordic[nrf52840] dongle to build OpenThread Border Router, is it possible with these to build in RCP design? If so can you please briefly quote the steps to be followed.

 

I have EFR32MG12 attached to brd4001A  Board to communicate with OTBR. I've flashed ot-ncp-ftd demo example code using Simplicity studio 5 and want to know how to verify that.

And it would be of a great help if I get info. on how to build the OTBR if there is any other way and the EFR32 to communicate each other.

Thank you in advance.

[Jonathan Hui]

On Wed, Mar 31, 2021 at 10:16 PM N.UMAMAHESWAR REDDY <n.umamahes...@gmail.com> wrote:

Sorry, I'm confused now as this is the first time I'm working on OpenThread related stuff.

I have Raspberry PI 3B and Nordic[nrf52840] dongle to build OpenThread Border Router, is it possible with these to build in RCP design? If so can you please briefly quote the steps to be followed.

Please see the Thread Border Router - Bidirectional IPv6 Connectivity and DNS-Based Service Discovery codelab that Kangping linked in his previous response.

 

I have EFR32MG12 attached to brd4001A  Board to communicate with OTBR. I've flashed ot-ncp-ftd demo example code using Simplicity studio 5 and want to know how to verify that.

Please see QSG170: Silicon Labs OpenThread Quick-Start Guide.

And it would be of a great help if I get info. on how to build the OTBR if there is any other way and the EFR32 to communicate each other.

Thank you in advance.

I hope the links above are helpful.

--

Jonathan Hui

[N.UMAMAHESWAR REDDY]

In Thread Border Router - Bidirectional IPv6 Connectivity and DNS-Based Service Discovery it is mentioned about 2 nrf52840 dev board but, I have only one nrf52840 dongle with Rasp Pi. In that case building of OTBR is not possible?

[Jonathan Hui]

On Wed, Mar 31, 2021 at 10:38 PM N.UMAMAHESWAR REDDY <n.umamahes...@gmail.com> wrote:

In Thread Border Router - Bidirectional IPv6 Connectivity and DNS-Based Service Discovery it is mentioned about 2 nrf52840 dev board but, I have only one nrf52840 dongle with Rasp Pi. In that case building of OTBR is not possible?

OTBR only requires a single 15.4 device to serve as the RCP. The second nRF52840 board is simply for demonstrating Thread wireless connectivity. You can use a EFR32MG12-based platform instead - see openthread/ot-efr32.

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Jonathan Hui

[N.UMAMAHESWAR REDDY]

From my understandings, I feel that nrf52840 dongle can't be served in RCP design even it has 15.4 radio and the page that you mentioned refers to nrf dev boards which I don't want to use, if it is possible with nrf Dongle in RCP design, can you please guide me where I can find the instructions to set the dongle in RCP design

[Kangping Dong]

1. nrf52840 dongle can be served in RCP design.

2. See https://github.com/openthread/ot-nrf528xx/blob/main/src/nrf52840/README.md#nrf52840-dongle-support-pca10059 for how to build openthread firmwares for nRF5 dongle.

3. See https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nc_programmer%2FUG%2Fnrf_connect_programmer%2Fncp_programming_dongle.html for how to flash nRF5 dongle.

4. When flashing the openthread firmware, use ot-rcp binary but not ot-ncp-ftd.

5. Plug the flashed nRF dongle to the Raspberry Pi.

6. Follow the reset of this codelab  Thread Border Router - Bidirectional IPv6 Connectivity and DNS-Based Service Discovery to verify the setup and form a Thread network.

BRs,

kangping

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