Pymesh updates

[catalin]

@robert-hh Thanks a lot, Robert, for highlighting this malfunction.
I will test this scenario on the latest firmware.

[robert-hh]

@catalin Two question:

1. I tried the Pymesh Android app, but it does not get any connections. Where and how does it search for a connection.
2. With these standard binary images, how can I change the WiFi settings, e.g. into STA mode and DHCP? The code seems to be executed from _boot.py. If I interrupt is, the normal boot process continues. Funny enough, some of the pymesh stuff continues to run.

[catalin]

@robert-hh

1. The Pymesh mobile app searches BLE Servers with name "PyGo*". I suppose pressing Restart scan button doesn't solve situation. Try to use another mobile app, like BLE Scanner(or nRF Connect) to check if the Lopy is discovered (it should have 2 services advertised). Sometimes Android+iOS have some caching of BLE connections.

2. Basically, you can't have your own main, as several threads are in the frozen scripts, hence the zombie threads.

Now I am working a frozen Pymesh scripts(as library) which can be used with a user main.py+ config file, hope to be done to be included in next Pymesh firmware release.

[robert-hh]

@catalin BLE Scanner finds both devices active at the moment, but the pymesh app does not connect.

[catalin]

@robert-hh, I'm not sure how it works in Android, rights for using Bluetooth and localisation should be given to the Pymesh app (iOS asks when app is first time started).
Localisation right is required as GPS coords are sent to the node when BLE connection is established; and somehow BLE usage is linked to localisation services, too; honestly I did not investigated this.

[robert-hh]

@catalin Thank. That was the trick.

[eranroll]

@catalin Hi,

I have being experiencing the same crashes as @robert-hh when using LoRa MESH with FiPy-1.20.0.rc8, and I know that LoRa MESH has been removed from new development builds such as FiPy-1.20.0.rc13.
I would like to know if a stable LoRa MESH version is planned anytime soon, or perhaps even a more stable development version?

[Danne]

First of all, let me thank you for this excellent project!
Pymesh paves way for many very interesting projects!

I have started on a project using a pymesh network, it's a simple network with LoPy4 nodes and WiFi access points with web-servers allowing people to find each other and then send encrypted messages over the Loramesh. I want to add batteries and solar-cells to the mesh nodes to make this project completely off-grid.

Cellphone  <- HTTP over WiFi -> LoPy4 <-> LoRa Mesh

Questions for @catalin:

• Which firmware would you recommend for the early development of products using mesh? Should I wait for the upcoming release?
• I would like a version of the firmware with source-code to be able to debug things like "InstrFetchProhibited". The latest version of the Firmware (https://github.com/pycom/pycom-micropython-sigfox) does not include the OpenThread in pycom-esp-idf https://github.com/pycom/pycom-esp-idf . Is there a developer branch that I can get access to, if so which? I don't mind it being under development or if it crashes as long as I can build it and investigate further :)

Sincerely,

Daniel

[catalin]

@Danne @eranroll
For the moment we have removed the open-source Pymesh components from the public repositories, and also from the binary releases.
We prepared a process to release binary Pymesh releases, but the licensing is not yet set.
Honestly, we're not sure if we'll release open-source, depends on the licensing process.

I intend next week to release here binaries for Lopy4 and Fipy, which would work with scripts from here.

[Danne]

@catalin Thanks for the reply!

Open-source would be nice!

Looking forward to the upcoming release!

Best,

Daniel

[robert-hh]

@catalin wouldn't it possible to put that closed stuff in a binary lib which will be linked when one builds the firmware?

[thinginnovations]

For Lopy4 release, will this work on the L01 modules as this has the same flash and ram as the Lopy4 or will it be only limited to the L04 OEM modules?

Thanks

Andrew

[robert-hh]

@thinginnovations You should expect that the LoPy4 firmware will only work on the L04 module (SX1276 chip) and the LoPy1 firmware will work on the L01 module, making however use of the larger RAM and flash. Similar to the WiPy firmware which works on both WiPy2 and WiPy3.

[thinginnovations]

@robert-hh That is providing Pycom build the firmware for the LoPy and include the LoRa Mesh functionality.

Andrew

[eranroll]

@catalin Thanks for the reply! I was able to load the tar files you had uploaded using the PyCom Firmware Updater.
However, I am not sure I follow its purpose. LoRa Mesh communication will start working on boot? From that point forward messaging over the LoRa Mesh network is done only using the Mesh CLI?

I am able to run a main.py file of lib/pymesh for example, but only after a few CTRL+C which stop the MESH THREAD.

[catalin]

hi @eranroll
Yes, indeed before I've frozen main.py, just for demo purpose.
Now (just now, I've updated binaries), the Pymesh is a frozen library, and using a nice main.py you can play with Pymesh features.

[thinginnovations]

Just seen there is some new firmware for FiPy and Lopy4, are you going to create a version for use on L01 modules?

Thanks

Andrew

[catalin]

Thanks @thinginnovations for pointing L01 modules.
For now there are some build errors, I'll check with the team.
When solved, I'll put them next to Lopy4 and Fipy: https://github.com/pycom/pymesh_apps

[Danne]

With the new firmware:
On the line:

self.lora.Mesh()

in Loramesh I get:

Guru Meditation Error: Core  0 panic'ed (LoadProhibited). Exception was unhandled.
...

Any possibility of getting access to the FW source? Would be fun to debug this, and I got at least 5 Lopy4 boards that are unusable right now with this problem...

[catalin]

Sorry, @Danne, can't release source-code, for now.

So, using https://github.com/pycom/pymesh_apps/blob/master/custom_fw_bin/LoPy4.tar.gz , then having just this small code (no other scripts running):

from network import LoRa
lora = LoRa(mode=LoRa.LORA, region=LoRa.EU868, frequency = 863000000, bandwidth=LoRa.BW_500KHZ, sf=7)
mesh = lora.Mesh()

Do you still have error?

Next, you could try only this main.py: https://github.com/pycom/pymesh_apps/blob/master/pymesh_micropy_scripts/main.py