Installation and running the RPi-LoRa-Gateway

Install needed packages

sudo apt install python3 python3-rpi.gpio python3-spidev aprx screen git python3-pil python3-smbus

Checkout the code

Enter following commands:

cd
git clone https://github.com/tomelec/RPi-LoRa-KISS-TNC.git
cd RPi-LoRa-KISS-TNC
git clone https://github.com/mayeranalytics/pySX127x.git

to change into homedirectory and then checkout the code and the LoRa Chip-Driver in the right directory.

Configuration

Afterwards configure as following:

Edit aprx/aprx.conf.lora-aprs file

Type:

cd
cd RPi-LoRa-KISS-TNC
sudo cp aprx/aprx.conf.lora-aprs /etc/aprx.conf
pico -w /etc/aprx.conf

to copy and then open the config file.

The most important settings are:

mycall
Your call with an apropriate SSID suffix
Paper on SSID's from aprs.org
myloc
NMEA lat/lon form:

lat ddmm.mmN lon dddmm.mmE

Example:

lat 4812.52N lon 01622.39E

(simplest way to find the right coordinats for this? Go to aprs.fi on your location right-click and choose "Add marker" then click on the marker and you should see your coordinates in the NMEA style - enter this infos without any symbols into the config file as seen in the example above)

passcode
see see here to generate appropiate setting
server
either leave the default server or if you're connected to Hamnet as well insert an APRSIS Server within the hamnet - a List of Aprs Hamnet servers can be found in the OEVSV Wiki)

to save and close the file do: Strg + x -> Y -> Enter

Edit driver config file

Type

pico -w pySX127x/SX127x/board_config.py

change in line 36 from

DIO0 = 22  # RaspPi GPIO 22
DIO0 = 5   # RaspPi GPIO 5

to fix the SPI connection #todo how can we config this from outside?

Start the LoRa KISS TNC and aprx server instance

python3 Start_lora-tnc.py &
sudo aprx

Stop the server's

sudo killall aprx python3

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