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CONFIGURATION.md

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Environment Variables

Required global variables

  • GW_ID required
  • GW_KEY required
    • This gateway ID and gateway Key for TTN will be used to fetch the gateway's information form the TTN console. When SERVER_TTN is true, this will also be used to conenct and forward packets to TTN.

Optional global variables

  • GW_EUI - by default an EUI will be generated from the Raspberry Pi's ethernet MAC address.
    • The unique identifier for this gateway. It is used in LoRaWAN networks to identify where the packet was received and to address where a downlink packet needs to be sent from.
  • GW_CONTACT_EMAIL - default an empty string
    • The gateway owner's contact information. Will be overridden by the value from the TTN console.
  • GW_DESCRIPTION optional - default an empty string
    • A description of this gateway. Will be overridden by the value from the TTN console.
  • GW_RESET_PIN - default 22
    • The physical pin number on the Raspberry Pi to which the concentrator's reset is connected. See the README file for a description and a list of common values.
  • GW_GPS optional - default False
    • If true, use the hardware GPS.
    • If false,
      • use either fake gps if a location was configured in the TTN console,
      • otherwise try using fake gps with the reference location as set via environment variables,
      • otherwise don't send coordinates.
  • GW_GPS_PORT optional - default /dev/ttyAMA0
    • The UART to which the hardware GPS is connected to.
  • GW_REF_LATITUDE optional - default 0
    • The latitude to use for fake gps if the coordinates are not set in the TTN console.
  • GW_REF_LONGITUDE optional - default 0
    • The longitude to use for fake gps if the coordinates are not set in the TTN console.
  • GW_REF_ALTITUDE optional - default 0
    • The altitude to use for fake gps if the coordinates are not set in the TTN console.
  • GW_LOGGER optional - default false
    • Write a line to the terminal whenever a packet is received. ex: 08:54:37 INFO: [stats] received packet with valid CRC from mote: 26011C51 (fcnt=7)
  • GW_FWD_CRC_ERR optional - default false
    • Forward packets with an invalid CRC.
  • GW_FWD_CRC_VAL optional - default true.
    • Forward packets with a valid CRC.
  • GW_DOWNSTREAM optional - default true.
    • Globally enable (or disable) transmissions for this gateway.
  • GW_ANTENNA_GAIN optional - default 0.
    • Set this to the dBd gain of your antenna. The dBd value is the dBi value minus 2.15dB, ie. dBd = dBi-2.15. This is used to reduce the TX power of the concentrator to stay within the legal limits.
  • GW_PUSH_TIMEOUT optional - default 100.
    • Sets the timeout in milliseconds to wait for an acknowledgement of PUSH messages from the upstream server. If your gateway is located in South Africa this needs to be set to at least more than 170ms to compensate for the internet latency to Europe.
  • GW_AUTOQUIT_THRESHOLD optional - default 0/disabled.
    • The number of allowed PULL_ACKs to be missed on Semtech UDP connections before the packet forwarder restarts.
  • GW_LOGGER optional - default false.
    • Log received LoRaWAN packets to the console. This will increase the amount of logging to Balena and increase data usage.
  • FREQ_PLAN_URL optional - default https://account.thethingsnetwork.org/api/v2/frequency-plans/EU_863_870
    • The URL where the base configuration file and frequency plan should be downloaded from. This is overwritten by the URL given by the TTN account server when using the TTN gateway connector protocol.
  • SPI_SPEED optional - default 8000000.
    • The SPI bus speed in Herz to use to communicate with the concentrator.

Server variables

All server variables are optional, but when a server is enabled, it is recommended to set all variables to configure it completely.

  • SERVER_TTN optional - default true Should the gateway connect to the TTN backend

  • SERVER_TTN_DOWNLINK - default true Enable downlink transmissions for this server

  • ACCOUNT_SERVER_DOMAIN optional - default account.thethingsnetwork.org Domain of the account server to fetch the information from

  • ROUTER_MQTT_ADDRESS optional Override the address of the MQTT broker to connect to - e.g. router.eu.thethings.network:1883

  • SERVER_1_ENABLED optional - default false

  • SERVER_1_TYPE - default "semtech"

  • SERVER_1_ADDRESS

  • SERVER_1_PORTUP - only when using type semtech

  • SERVER_1_PORTDOWN - only when using type semtech

  • SERVER_1_GWID - only when using type ttn

  • SERVER_1_GWKEY - only when using type ttn

  • SERVER_1_DOWNLINK - default false

  • SERVER_2_ENABLED optional - default false

  • SERVER_2_TYPE - default "semtech"

  • SERVER_2_ADDRESS

  • SERVER_2_PORTUP - only when using type semtech

  • SERVER_2_PORTDOWN - only when using type semtech

  • SERVER_2_GWID

  • SERVER_2_GWKEY

  • SERVER_2_DOWNLINK - default false

  • SERVER_3_ENABLED optional - default false

  • SERVER_3_TYPE - default "semtech"

  • SERVER_3_ADDRESS

  • SERVER_3_PORTUP - only when using type semtech

  • SERVER_3_PORTDOWN - only when using type semtech

  • SERVER_3_GWID

  • SERVER_3_GWKEY

  • SERVER_3_DOWNLINK - default false

As long as SERVER_TTN is set to false, you can also:

  • SERVER_0_ENABLED optional - default false
  • SERVER_0_TYPE - default "semtech"
  • SERVER_0_ADDRESS
  • SERVER_0_PORTUP - only when using type semtech
  • SERVER_0_PORTDOWN - only when using type semtech
  • SERVER_0_GWID
  • SERVER_0_GWKEY
  • SERVER_0_DOWNLINK - default false

Example for using only legacy forwarder

Variable Value
SERVER_TTN false
SERVER_1_ADDRESS bridge.eu.thethings.network
SERVER_1_ENABLED true
SERVER_1_PORTDOWN 1700
SERVER_1_PORTUP 1700
FREQ_PLAN_URL https://account.thethingsnetwork.org/api/v2/frequency-plans/EU_863_870
GW_REF_LATITUDE -33.1
GW_REF_LONGITUDE 18.9
GW_REF_ALTITUDE 190

Note about boolean values

Use true and false as lower case words to enable or disable features via environment variables. Any other format will not be interpreted correctly.

Logal debugging

docker run --device /dev/ttyAMA0:/dev/ttyAMA0 --device /dev/mem:/dev/mem --privileged -e GW_TYPE="imst-ic880a-spi" -e GW_DESCRIPTION="test gateway" -e GW_CONTACT_EMAIL="" -e GW_ID="" -e GW_KEY="" newforwarder

Make a copy of Dockerfile.template to Dockerfile.

FROM resin/raspberrypi-buildpack-deps
...
CMD ["bash"]