I want to share with you the Pymesh (LoRa Mesh) current development and plans; last release of Pymesh is in v1.20.0.rc7
For starting, this is my Pymesh presentation(workshop) done at TTN Conf Jan 2019 Amsterdam; if you have any questions 🗣
As I've said in a previous mail, currently I'm working on the Border Router feature, I try to explain in a nice micropy script, basically how Pymesh data can be exposed outside of mesh, on Wifi/BLE/Cellular to the ☁.
Not to forget the 📕 were copied here: https://docs.pycom.io/firmwareapi/pycom/network/lora/pymesh.html and https://docs.pycom.io/tutorials/lora/lora-mesh.html with a disclaimer, as Pymesh is included just in RC (development) releases.
But, no worries, 😅 we'll include it in the first official stable.
We're planning in releasing firmware releases with and without Pymesh, due to relatively large (~200KB) code-size.
I'm working at the road-plan for further Pymesh features.
Long-term plan is exposing more openthread features, make tons of tests (lots of nodes, distance); connect Pymesh with Pybytes, optimise power-consumption, security for private Pymesh, profile some KPI (data able to be sent over Pymesh), and of course share all plans with community (basically I will open-source the micropy scripts presented in workshop, have some articles to explain all use-cases).
Just let me know your thoughts, about the further projects, and we could include requirements into official development.

When a node designated as a router receives a packet is this automatically sent out to the neighbours or does the application code need to resend to neighbours in the receiver callback function?

Thanks, trying to understand the process as I'm starting to build a larger mesh of nodes.

Thanks

Andrew

The router sends (routes) a packet to the destination, using the internal Thread routing(vector-distance algorithm). There could be some trouble, as the IPv6 of the destination should be known (either RLOC or ML-EID from here).
In the TTN conf scripts I've implemented some sort or ARP (MAC to IP resolution), so node with LoRa MAC 0xA can send a message to the node 0xB, without knowing B's IPv6 (internally node A interrogates Leader to find IP of node B).
I'll try to open-source them ASAP.

Some new Pymesh features were just released internally (so they will be incorporated in the next RC, probably this Friday) plus some example scripting for Border Router:

• added socket binding to IP, add listing border_router
• BUG: src and dest port on BR should he Host Swapped
• Mesh.rx_cb() added argument, with the callback
• added Mesh.border_router_del(prefix) method, for erasing Border Router entry
• added multi-socckets (max 3)
• added Border Router socket with header IP and port destination
  I did not forgot, we'll open-source some Pygo example scripts, as promised. I need to update/test for the new release.

Plus, working on some Pymesh Roadmap...

In the release 1.20.0.rc8 the Pymesh was updated, please check https://forum.pycom.io/topic/4499/firmware-release-candidate-v1-20-0-rc8

As usual, let me know what's not clear, the Border Router example a bit too simple.

Andrew

Heads-up, I am working on a visual tool, like a Pymesh viewer to actually click buttons and follow Pymesh evolution. Most probably connecting Pymesh to Pybytes 🌥.

It was tested on a 20+ Mesh network on Lopy4 and Fipy (sorry Lopy1 can't work with these scripts, due to scripts size and RAM requirements).

Does it work on the L01? It has the same amount of RAM and flash as the Lopy4.

I've released a beta version of the Pymesh mobile app:

• iOS(>v12.1, TestFlight app from Apple is required): https://testflight.apple.com/join/PIxwbTKp
• Android(>v4.4): https://github.com/pycom/pymesh_apps/tree/master/mobile_app/android

In this repo there are firmware binaries (but latest development should work too), and micropy scripts (but https://github.com/pycom/pycom-libraries/tree/master/lib/pymesh should be also fine).

Here is the example of the Border Router: https://docs.pycom.io/tutorials/lora/pymesh-br/, more precisely at this line rcv_data contains the info to be sent to Internet.

In class WLAN and socket you can see how to send data on Wifi.
Similar examples are on NBIoT/CatM1/BLE/Sigfox/LoRaWAN.

Does this answers your question?

On a side note, I am working on some micropython scripts on which any Pymesh node can connect to Pybytes, if connection is done then they declared itself as Border Router, the other nodes see they have a BR in network (as a new IPv6 appears on them). Probably I'll release these in the next couple of weeks.

Also, a separate Pymesh firmware binary release will be done next week (separate from already existing flavours development/stable/pybytes).

More features are to come:

• binary release with Pymesh flavour
• having included frozen scripts, so a mesh can be started using 3-4 lines of micropython
• any node can be declared as Border Router and it can be connected to Pybytes, or other IoT platform
• any node accepts BLE connections, so using Pymesh mobile app, one can see diagnostics info within the Mesh.

And, of course, we're waiting for more suggestions on Pymesh wishlist.

Unhandled exception in thread started by <bound_method>
Traceback (most recent call last):
  File "cli.py", line 36, in process
EOFError: 

So there is a function cli.py, which seems to wait for commands. But which one?