pisupply/pyrak811

RAK811 Python 3 library for Raspberry Pi

RAK811 Python 3 library for Raspberry Pi

About

RAK811 Python 3 library and command-line interface for use with the Raspberry Pi LoRa pHAT.

The library exposes the AT commands as described in the RAK811 Lora AT Command User Guide V1.5.
The command-line interface exposes all API calls to the command line.

Commands currently implemented:

• System commands
• LoRaWan commands
• LoraP2P commands
• Radio

Not implemented yet:

• Peripheral

Requirements

• A Raspberry Pi!
• A RAK811 LoRa module (PiSupply IoT LoRa Node pHAT for Raspberry Pi )
• On the Raspberry Pi the hardware serial port must be enabled and the serial console disabled (use raspi-config)
• The user running the application must be in the dialout and gpio groups (this is the default for the pi user)

Install the rak811 package

The package is installed from PyPI:

sudo pip3 install rak811

The pip3 command is part of the python3-pip package. If it is missing on your system, run:

sudo apt-get install python3-pip

PiSupply provides detailed instructions for configuring your Raspberry Pi.

Usage

Quick start with The Things Network

Register your device

Register you device on TheThingsNetwork using the unique id of your RAK811 module (Device EUI).
You can retrieve your Device EUI with the following command:

rak811 hard-reset
rak811 get-config dev_eui

Note: the rak811 hard-reset command is only needed once after (re)booting your Raspberry Pi to activate the module.

Hello World

Send your first LoRaWan message wit the following python code snippet:
(The App EUI and App Key are copied verbatim from the TTN console)

#!/usr/bin/env python3
from rak811 import Mode, Rak811

lora = Rak811()
lora.hard_reset()
lora.mode = Mode.LoRaWan
lora.band = 'EU868'
lora.set_config(app_eui='70B3D5xxxxxxxxxx',
                app_key='xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx')
lora.join_otaa()
lora.dr = 5
lora.send('Hello world')
lora.close()

Your first message should appear on the TTN console!

Next steps

See the example directory on GitHub:

• api_demo.py: demo most of the API calls
• otaa.py: OTAA example
• abp.py: ABP example
• p2p.py: P2P example
• p2p.sh: P2P example based on the command-line interface (see below)

To run the examples, first copy the ttn_secrets_template.py to ttn_secrets.py and enter your LoRaWan TheThingsNetwork keys.

Note: you do not need to hard_reset the module each time you run a script. However you must do it the first time after a (re)boot to activate the module.

balenaCloud

Sample code to use the library with balenaCloud: Basic RAK811 example with balenaCloud.

Command-line interface

The rak811 command exposes all library calls to the command line:

$ rak811 --help
Usage: rak811 [OPTIONS] COMMAND [ARGS]...

  Command line interface for the RAK811 module.

Options:
  -v, --verbose  Verbose mode
  --help         Show this message and exit.

Commands:
  abp-info            Get ABP info.
  band                Get/Set LoRaWan region.
  clear-radio-status  Clear radio statistics.
  dr                  Get/set next send data rate.
  get-config          Get LoraWan configuration.
  hard-reset          Hardware reset of the module.
  join-abp            Join the configured network in ABP mode.
  join-otaa           Join the configured network in OTAA mode.
  link-cnt            Get up & downlink counters.
  mode                Get/Set mode to LoRaWan or LoRaP2P.
  radio-status        Get radio statistics.
  recv-ex             RSSI & SNR report on receive.
  reload              Set LoRaWan or LoRaP2P configurations to default.
  reset               Reset Module or LoRaWan stack.
  send                Send LoRaWan message and check for downlink.
  set-config          Set LoraWAN configuration.
  signal              Get (RSSI,SNR) from latest received packet.
  sleep               Enter sleep mode.
  version             Get module version.
  wake-up             Wake up.

Session example:

$ rak811 -v reset lora
LoRa reset complete.
$ rak811 -v set-config app_eui=70B3D5xxxxxxxxxx app_key=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
LoRaWan parameters set
$ rak811 -v join-otaa
Joined in OTAA mode
$ rak811 -v dr
5
$ rak811 -v dr 4
Data rate set to 4.
$ rak811 -v send Hello
Message sent.
No downlink available.
$ rak811 -v send --port 4 --binary '01020211'
Message sent.
Downlink received:
Port: 1
RSSI: -56
SNR: 31
Data: 123456

Note: for your first session after boot, you will need to do a hard-reset instead of a reset lora command to activate the module.