Running NCP on NORDIC nrf52840 unable to ping.

[mad...@pathpartnertech.com]

Hi

     I started working with NORDIC platform.
     
     I am running the NCP on Board 1 and connected to my Ubuntu on serial port 1, using Wpantund i'm Configuring the NCP.
     In the second Board i am running CLI application connected to serial port 2.

     Now i formed a thread network making the CLI as leader and joined NCP as end device to the same network.

Now , from the Linux terminal i tried ping6 with IPV6 address of NCP , it is able to ping and successful.
But when i ping6 to the any Cli node IP addresses , it is not successful.

What could be the reason ?

When i experimented the same with Posix ( open thread simulator tutorial ), it is successful in both cases, pinging.

These are the commands i used to Run the NCP and CLI on NORDIC Platforms.

$ cd <openthread-master>
$ ./bootstrap
$ make -f examples/Makefile-nrf52840

To flash   

$ nrfjprog -f nrf52 --chiperase --program output/nrf52840/bin/arm-none-eabi-ot-cli-ftd.hex
$ nrfjprog -f nrf52 -r

Initializing NCP ,Opening wpantund .
$ sudo /usr/local/sbin/wpantund -o NCPSocketNme /dev/ttyACM1 -o WPANInterfaceName wpan1



similarly i flashed the CLI application and using a serial application (putty) i'm configuring CLI.

So what could be the reason that i'm unable to ping with cli node from Linux terminal.


Thanks and Regards
R Madhu. 




	
	
	
	





	
	
	
	
	
	
	
	

[Yakun Xu]

Hi,

I guess you missed configuring the default gateway. Try this in wpanctl

wpanctl> config-gateway ff11:22::

and then find the address with prefix ff11:22:: of the cli node and ping6 this new address.

[mad...@pathpartnertech.com]

Thanks Yakun,

                    I tried the same way that you suggested. I added 2001:dead:beef:cafe::  as default gateway using config-gateway -d option.
I found ipv6 addresses on CLI with prefix "2001:dead:beef:cafe".
But still unable to ping6 with the address available on the CLI node from LINUX terminal.

I am guessing ,do i need to change the configuration of Wpantund to resolve this ? Any idea ,what to change?

Thanks and Regards.
R Madhu.

[Martin Turon]

Hi Madhu,

On the NCP end device, you may need to add a static route telling the Linux kernel to use the Thread interface for the entire prefix, not just the NCP's address on that prefix:

route -A inet6 add ::/0 wpan0

You can obviously make this more granular and only setup the specific prefixes you care about.

Martin

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[Jonathan Hui]

No, setting up static routes is not needed. The simulator tutorial does not require or mention it.

Madhu - can you provide more detail on the steps you are performing in this test?

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[mad...@pathpartnertech.com]

HI 
i tried adding prefixes , using

route -A inet6 add ::/0 wpan0

still it is not working in my case.

These are the steps i followed in the test.

To build:

$ cd <openthread-master>
$ ./bootstrap
$ make -f examples/Makefile-nrf52840

To flash

$ cd output/nrf52840/bin

$ arm-none-eabi-objcopy -O ihex arm-none-eabi-ot-cli-ftd arm-none-eabi-ot-cli-ftd.hex

$ arm-none-eabi-objcopy -O ihex arm-none-eabi-ot-ncp-ftd arm-none-eabi-ot-ncp-ftd.hex

on board 1 cli

$ nrfjprog -f nrf52 --chiperase --program output/nrf52840/bin/arm-none-eabi-ot-cli-ftd.hex
$ nrfjprog -f nrf52 -r

on board 2 ncp
$ nrfjprog -f nrf52 --chiperase --program output/nrf52840/bin/arm-none-eabi-ot-ncp-ftd.hex

$ nrfjprog -f nrf52 -r

Through serial console i configured cli Node,
>panid 0x1234
>ifconfig up
>thread state
>state
  leader.

Initializing NCP ,Opening wpantund .

$ sudo /usr/local/sbin/wpantund -o NCPSocketNme /dev/ttyACM0 -o WPANInterfaceName wpan0

In another terminal opening wpanctl  
$ sudo wpanctl -I wpan0
wpanctl:wpan0>status
wpan0 => [
	"NCP:State" => "offline".
         .
         .
wpanctl:wpan0> scan
   | Joinable | NetworkName        | PAN ID | Ch | XPanID           | HWAddr           | RSSI
---+----------+--------------------+--------+----+------------------+------------------+------
 1 |       NO | "OpenThread"       | 0x1234 | 11 | DEAD00BEEF00CAFE | 264E90B129D304AE |  -44
wpanctl:wpan0> join 1
Joining "OpenThread" DEAD00BEEF00CAFE as node type "end-device"
Successfully Joined!
wpanctl:wpan0>status
wpan0 => [
	"NCP:State" => "associated"
	"Daemon:Enabled" => true
	"NCP:Version" => "OPENTHREAD/0.01.00; NRF52840; Mar 27 2017 10:06:23"
	"Daemon:Version" => "0.07.00 (/f911961-dirty; Mar  3 2017 15:15:18)"
	"Config:NCP:DriverName" => "spinel"
	"NCP:HardwareAddress" => [B8DD443A6E973DEB]
	"NCP:Channel" => 11
	"Network:NodeType" => "end-device"
	"Network:Name" => "OpenThread"
	"Network:XPANID" => 0xDEAD00BEEF00CAFE
	"Network:PANID" => 0x1234
	"IPv6:LinkLocalAddress" => "fe80::f4df:5d2c:c9e1:b755"
	"IPv6:MeshLocalAddress" => "fdde:ad00:beef:0:9a01:a0d9:9da2:553b"
	"IPv6:MeshLocalPrefix" => "fdde:ad00:beef::/64"
	"com.nestlabs.internal:Network:AllowingJoin" => false
]

from Linux terminal pinging to above ipv6 address is successfull
$ping6 fdde:ad00:beef:0:9a01:a0d9:9da2:553b -c 2
PING fdde:ad00:beef:0:9a01:a0d9:9da2:553b(fdde:ad00:beef:0:9a01:a0d9:9da2:553b) 56 data bytes
64 bytes from fdde:ad00:beef:0:9a01:a0d9:9da2:553b: icmp_seq=1 ttl=64 time=0.017 ms
64 bytes from fdde:ad00:beef:0:9a01:a0d9:9da2:553b: icmp_seq=2 ttl=64 time=0.048 ms

--- fdde:ad00:beef:0:9a01:a0d9:9da2:553b ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.017/0.032/0.048/0.016 ms


on cli 
>ipaddr 
  fdde:ad00:beef:0:0:ff:fe00:fc00
  fdde:ad00:beef:0:0:ff:fe00:400
  fdde:ad00:beef:0:c4fe:4e74:4d8a:5c4d
  fe80:0:0:0:244e:90b1:29d3:4ae

from linux terminal pinging to any of the above address is not working.
$ping6 fdde:ad00:beef:0:c4fe:4e74:4d8a:5c4d -c 2

PING fdde:ad00:beef:0:c4fe:4e74:4d8a:5c4d(fdde:ad00:beef:0:c4fe:4e74:4d8a:5c4d) 56 data bytes

--- fdde:ad00:beef:0:c4fe:4e74:4d8a:5c4d ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 1007ms
 

--------
so then i also tried configuring gateway.
wpanctl:wpan0> config-gateway -d 2001:dead:beef:cafe::
Using prefix "2001:dead:beef:cafe::"
Gateway configured.

On cli , using ipaddr i can see a new ipv6 address with prefix "2001:dead:beef:cafe", and pinging to this address is also failed.

When i am simulating with posix examples i successfully pinged in both cases.

Can you figure out the problem ? Do i need to do changes in the configuration file of Wpantud.conf.?

Thanks and Regards,
R Madhu

[Yuwen Lan]

Madhu,

Please use "wpanctl:wpan0> join 1 -T 2" or  "wpanctl:wpan0> join 1 -T router" and make sure the border router joins the network as node type "router".

By doing so, you should be able to ping "2001:dead:beef:cafe::" based addresses. Also, pinging mesh-local addresses beyond of border router itself should expect failing.

Thanks,

Yuwen

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[mad...@pathpartnertech.com]

HI yuwenian,

Thanks .

               I tried the same , Making NCP node to join as Router, But still the same issue.

[mad...@pathpartnertech.com]

HI yuwenian,

Thanks .

               I tried the same , Making NCP node to join as Router, But still the same issue.

        Is the way that i'm configuring the Wpantund is correct ?

Thanks Regards
R Madhu

[Yuwen Lan]

Hi Madhu,

If possible, can you save your above operations and outputs as log files and post here? I didn't see obvious issues in your configurations.

Yuwen

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[mad...@pathpartnertech.com]

Hi
  
   I just now upgraded Wpatund(0.08.0) and cloned latest OT from git.
   Following the same procedure mentioned in
   https://github.com/openthread/wpantund/blob/master/INSTALL.md#wpantund-installation-guide
   and
   https://github.com/openthread/openthread/tree/master/examples/platforms/nrf52840
  
   Now i am even not able to ping with the NCP node from Linux terminal.

 when i check the status of wpan on my PC
 $ ifconfig 
 wpan0     Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 
               UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1280  Metric:1
               RX packets:0 errors:0 dropped:0 overruns:0 frame:0
              TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:500
              RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)


what may be the problem?
how to work out with new version of Wpantund?

Thanks and Regards
R Madhu.

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[Mike Morschbert]

Just updated my wpantund to the newest rev and it also mentiond 0.08. But no ping was possible for me as well... so I checked out a two week old commit and everything works again...

[Krzysztof Loska]

I think it was reported as an issue here: https://github.com/openthread/openthread/issues/1536 and fixed by this pull request: https://github.com/openthread/wpantund/pull/149 So please try again the newest version.

Best regards,

Krzysztof Loska

[mad...@pathpartnertech.com]

HI Krzysztof

                    Yes it is addressed with respect to the open thread simulator(posix).

      I tried with the latest version just now, with Nordic Boards, Sorry,  still i'm facing the same issue . Not able to communicate between the CLI-NCP nodes and also Pinging with the CLI node from the LINUX terminal.

Thanks & Regards
R Madhu.

[mad...@pathpartnertech.com]

Hi ,
    The above issues are solved , by testing with Latest commits.
    I cross checked with my another PC, its working fine with it.

Thanks all for your inputs.

Regards
R Madhu