Setup Mesh Network with Serialboard

[Ronald Reichmuth]

Hello,

I'm using several nRF52840 boards to setup a bluetooth mesh network. Im using the python script "interactive_pyaci.py" to setup the mesh. The mesh is working and I'm able to send mesh packets. After a reset of the serialboard the settings are lost and the board is unable to send mesh packets. I got the following error message:

2019-07-29 17:36:23,260 - ERROR - COM47: PacketSend: ERROR_REJECTED

How can I setup the serialboard with the data stored in "database/database.json" ?

[Ronald Reichmuth]

Update:

I tried the follwoing commands to re-configure the serialboard with an mesh setup stored in database/database.json

db = MeshDB('database/database.json')
p = Provisioner(device, db) 
device.send(cmd.DevkeyAdd(db.nodes[0].unicast_address, 0, db.nodes[0].device_key))
device.send(cmd.AddrPublicationAdd(db.nodes[0].unicast_address))

The serialboard is now able to send mesh packets. But it is required to 'reset' the node too. Probably an issue with the sequence number which should prevent from replay attacks? Therefore, the question arises if this is the right approach?

[Mttrinh]

Hi,

There have been a similiar issue before and a solution was provided. Have a look ath this thread.

[Ronald Reichmuth]

Hi Mttrinh

the Serialboard is now able to send mesh Packets with "Packet Send" command, thank you. But there is still an issue with the sequence number. Probalby the serialboard doesn't store the sequence number in the NVM. So the serialboard sends a mesh packet which containts a previously used sequence number and the packets will be ignored by the node. 

[Mttrinh]

Hi,

You can read more regarding sequence number and the serial example in this post.