lorawan | An ns-3 module for simulation of LoRaWAN networks

I want to add USB MSC (Mass Storage Class, so USB storage drive) functionality to my Murata B-L072Z-LRWAN1 board. For this I have used the most recent I-CUBE-LRWAN end-node project and generated USB MSC code. I have done this in the past for older versions of the I-CUBE-LRWAN (a 2018 release) and gotten it working. However if I do it now I get two behaviours:

• Flash the board, connect it and then I reset the board. Nothing happens. No flashing lights, debug serial output, no USB and no LoRaWAN.
• Flash the board, connect it and then start a debugger session, I let it run freely without any breakpoints: full operation, lights work, debug serial works, USB presents itself and windows says it needs to format the drive. (Which is correct as the most barebones version does not have any storage interfacing added)

I can't explain this. Why does the code work when the debugger is attached but fully locks up when it is not? As for the changes between the older and newer versions of I-CUBE-LRWAN: they have changed from the systick to an RTC based timing setup. I however can't figure out how this is related to the debugger.

Removing the USB Device cable does not make the code run.

When I comment out the call to MX_USB_DEVICE_Init, windows sees an unidentifiable USB device but none of the code works (e.g. no debug UART output). When I uncomment MX_USB_DEVICE_Init nothing happens, no USB connect.

I'm using Keil uVision as my IDE. Compiler version: "default compiler version 6"

To replicate this you need a B-L072Z-LRWAN1 (modified to enable the USB pins) or that Murata chip with USB port. The full Minimal, Reproducible Example is to take the end-node project from I-CUBE-LRWAN and generating the USB MSC code in STM32CubeMX. (Target MCU is STM32L072CZTx). Then add all the USB MSC files to the end-node project and making the following additions to the project:

Add the USB_IRQHandler to stm32l0xx_it.c:

I'm trying to work with the following incoming json in a Python script running in an AWS Lambda function. This is coming into Lambda on the usual event object as a dict.

I have installed FIWARE on my machine (Ubuntu 18.04) and I am currently trying to work with the IoT Agent, using the HTTPBindings.js (my data is sent via LoRaWAN and I've changed the parseData function in order to use my own data "protocol" [id=1&temp=12&humidity=10], which brings me here to ask 2 questions for someone who is more experienced and can help me with:

I have a temperature, humidity and pressure sensor working over the LoRaWAN , I can get the read with the phone by NFC.

Also, I have some Arduino projects working with esp32 and RFM9X(Lora) boards to exchange data between the radio modules.

I want to sniff the LoraWAN packages that exchange between radio boards or between the sensor and another device

How I can do that by Wireshark??

I already have cc2531usb dongle I am using it for ZigBee packets , can i use it for Lora and how?

I would like to create a point-to-point connection between a LoRa temperature sensor and a M5 Stack (ESP32) with LoRa module. However, I am a beginner with LoRa, so I have a few questions:

• Are all packets send with LoRa (not LoRaWAN) encrypted? Or does it depend on the producer of the LoRa sensor?
• Can the content of the packet received by the M5 Stack be viewed? (If I understand correctly, with the LoRaWAN the content can only be viewed after it is on the server).
• Can I send measured temperatures from multiple LoRa sensors to one M5 Stack? If yes, how could I distinguish from which sensor the packet has been sent?

Any help would be appreciated!

i have some trouble about influxdb+django configurations.

Firstly let me summarize my situation. I have an influxdb which is already collecting data from endnode(sensors). Data is transfering by LoraWan technology. I can read that datas from terminal by writing flux queries so database is working without any problem.

Now my second phase of this project is visualizing that datas on an web page. I am using django framework for that i completed the frontend parts nearly. I looked on internet for the configurations for influxdb on django but i couldnt handle it. In django documentation page they are listed some databases like below:

Django officially supports the following databases:

PostgreSQL MariaDB MySQL Oracle SQLite

How will i use/configure and get data from my influxdb ? Is it possible ? What are the alternative solutions.

in lorawan I know certain formula about data rate and receiver sensitivity. Some of these formulas can be found here. My question is that how does bandwidth effects the range in lorwan network? given that other parameters are constant. And according to which formula can it be concluded?

Thanks.

I just built and tested connection with ttn using single channel lorawan gateway as per thing4U/esp-1ch-gateway and a single channel node both based on TTGO-ESP32Lora and eventually configured both on www.thethingsnetwork.org. Everything works nicely but I do not understand why despite the node sends data at pace of 2 minutes, the gateway detects and send over to ttn just one packet out of three. I.E.: packet 0,3,6,9 etc. so the data at ttn are updated every 6 minutes instead of 2. Any help / suggestion is appreciated.

Currently I've got my own LoRaWAN network, with around 45 devices sending data with this payload: ID=D0001&T=23&H=60 where ID is the sensorId; T-Temperature; H - Humidity.

What steps do I have to make next to get context from my devices?

These are the steps that I've made:

1 - Installed IoT-Agent Ultralight

2 - Configured MQTT on the config.js file with my MQTT data

config.mqtt = { host: 'HOST_NAME', port: 1883, protocol : mqtt, username: 'USERNAME', password: 'PASSWORD', retain: false, retries: 5, retryTime: 5, keepalive: 0, avoidLeadingSlash: false };

3 - IoTAgent-ul (node bin/iot-agentul), getting this message: time=2020-12-01T10:44:48.197Z | lvl=INFO | corr=526cdc56-62b8-4791-b95d-f5110ca18b7e | trans=526cdc56-62b8-4791-b95d-f5110ca18b7e | op=IOTAUL.MQTT.Binding | from=n/a | srv=n/a | subsrv=n/a | msg=connected | comp=IoTAgent