Single Channel LoRaWAN Gateway

This repository contains a proof-of-concept implementation of a single channel LoRaWAN gateway.

It has been tested on the Raspberry Pi platform, using a Semtech SX1272 transceiver (HopeRF RFM92W), and SX1276 (HopeRF RFM95W).

The code is for testing and development purposes only, and is not meant for production usage.

Part of the source has been copied from the Semtech Packet Forwarder (with permission).

Maintainer: Thomas Telkamp thomas@telkamp.eu

Was forked by @jlesech https://github.com/tftelkamp/single_chan_pkt_fwd to add json configuration file
then forked by @hallard https://github.com/hallard/single_chan_pkt_fwd

Added new Features

• Added support for Dragino Lora HAT and LoRasPi (more to come)
• pin definition are in config file
• Removed some configuration hard coded in source file and put them into global_conf.json
• renamed main.cpp to single_chan_pkt_fwd.cpp
• added single_chan_pkt_fwd.service for systemd (debian jessie minimal) start
• added make install and make uninstall into Makefile to install service
• added control for On board Led's if any

Raspberry PI pin mapping is as follow and pin number in file global_conf.json are WiringPi pin number (wPi colunm)

root@pi04 # gpio readall
+-----+-----+---------+--B Plus--+---------+-----+-----+
| BCM | wPi |   Name  | Physical | Name    | wPi | BCM |
+-----+-----+---------+----++----+---------+-----+-----+
|     |     |    3.3v |  1 || 2  | 5v      |     |     |
|   2 |   8 |   SDA.1 |  3 || 4  | 5V      |     |     |
|   3 |   9 |   SCL.1 |  5 || 6  | 0v      |     |     |
|   4 |   7 | GPIO. 7 |  7 || 8  | TxD     | 15  | 14  |
|     |     |      0v |  9 || 10 | RxD     | 16  | 15  |
|  17 |   0 | GPIO. 0 | 11 || 12 | GPIO. 1 | 1   | 18  |
|  27 |   2 | GPIO. 2 | 13 || 14 | 0v      |     |     |
|  22 |   3 | GPIO. 3 | 15 || 16 | GPIO. 4 | 4   | 23  |
|     |     |    3.3v | 17 || 18 | GPIO. 5 | 5   | 24  |
|  10 |  12 |    MOSI | 19 || 20 | 0v      |     |     |
|   9 |  13 |    MISO | 21 || 22 | GPIO. 6 | 6   | 25  |
|  11 |  14 |    SCLK | 23 || 24 | CE0     | 10  | 8   |
|     |     |      0v | 25 || 26 | CE1     | 11  | 7   |
|   0 |  30 |   SDA.0 | 27 || 28 | SCL.0   | 31  | 1   |
|   5 |  21 | GPIO.21 | 29 || 30 | 0v      |     |     |
|   6 |  22 | GPIO.22 | 31 || 32 | GPIO.26 | 26  | 12  |
|  13 |  23 | GPIO.23 | 33 || 34 | 0v      |     |     |
|  19 |  24 | GPIO.24 | 35 || 36 | GPIO.27 | 27  | 16  |
|  26 |  25 | GPIO.25 | 37 || 38 | GPIO.28 | 28  | 20  |
|     |     |      0v | 39 || 40 | GPIO.29 | 29  | 21  |
+-----+-----+---------+----++----+---------+-----+-----+
| BCM | wPi |   Name  | Physical | Name    | wPi | BCM |
+-----+-----+---------+--B Plus--+---------+-----+-----+

• For Dragino RPI Lora HAT
  pins configuration in global_conf.json

  "pin_nss": 6,
  "pin_dio0": 7,
  "pin_rst": 0

• For LoRasPi Shield
  pins configuration in file global_conf.json

  "pin_nss": 8,
  "pin_dio0": 6,
  "pin_rst": 3,
  "pin_led1":4

Installation

Install dependencies as indicated in original README.md below then

cd /home/pi
git clone https://github.com/hallard/single_chan_pkt_fwd
make
sudo make install

To start service (should already be started at boot if you done make install and rebooted of course), stop service or look service status

systemctl start single_chan_pkt_fwd
systemctl stop single_chan_pkt_fwd
systemctl status single_chan_pkt_fwd

To see gateway log in real time

journalctl -f -u single_chan_pkt_fwd

Pictures

running daemon on Raspberry PI with LoRasPI shield

Original README.md below

Features

• listen on configurable frequency and spreading factor
• SF7 to SF12
• status updates
• can forward to two servers

Not (yet) supported:

• PACKET_PUSH_ACK processing
• SF7BW250 modulation
• FSK modulation
• downstream messages (tx)

Dependencies

• SPI needs to be enabled on the Raspberry Pi (use raspi-config)
• WiringPi: a GPIO access library written in C for the BCM2835 used in the Raspberry Pi. sudo apt-get install wiringpi see http://wiringpi.com
• Run packet forwarder as root

Connections

SX127x	Raspberry PI
3.3V	3.3V (header pin #1)
GND	GND (pin #6)
MISO	MISO (pin #21)
MOSI	MOSI (pin #19)
SCK	CLK (pin #23)
NSS	GPIO6 (pin #22)
DIO0	GPIO7 (pin #7)
RST	GPIO0 (pin #11)

Configuration

Defaults:

• LoRa: SF7 at 868.1 Mhz
• Server: 54.229.214.112, port 1700 (The Things Network: croft.thethings.girovito.nl)

Edit source node (main.cpp) to change configuration (look for: "Configure these values!").

Please set location, email and description.

License

The source files in this repository are made available under the Eclipse Public License v1.0, except:

• base64 implementation, that has been copied from the Semtech Packet Forwarder;
• RapidJSON, licensed under the MIT License.