GPSD on waveshare sx1303 gateway on "pi full image"

Setup and configuration
1

I’m trying to use the L76 GPS chip on my Pi Hat.

  • I’ve enabled gpsd (and tested with gpsmon that it “works”)
  • i’m trying to configure concentratord to use gpsd

I’ve added gnss_dev_path to /etc/config/chirpstack-concentratord like so
‘’’
…
config sx1302
option model ‘waveshare_sx1302_lorawan_gateway_hat’
option region ‘EU868’
option channel_plan ‘eu868’
option antenna_gain ‘0’
option gnss_dev_path ‘gpsd://localhost:2947’
…
‘’’

A few questions:

  • is this this the correct location for gnss_dev_path
  • how can i change chirpstack-concentratord to log with DEBUG instead of INFO

And all of this on a “full pi image” …

2

Hi,

The gpsd path seems to be okay.

Log levels in concentratord config file are:

# Concentratord configuration.
[concentratord]
  # Log level.
  #
  # Valid options are:
  #   * TRACE
  #   * DEBUG
  #   * INFO
  #   * WARN
  #   * ERROR
  #   * OFF
  log_level="INFO"

  # Log to syslog.
  #
  # When set to true, log messages are being written to syslog instead of stdout.
  log_to_syslog=false

  # Statistics interval.
  stats_interval="30s"
3

Hej,

could you please enlighten me, how the templates + GUI settings are used to create the config files in the RPI Full image??

  • I can find there option in /etc/chirpstack-concentratord/sx1302/examples/concentratord.toml
  • i see the various config files in /etc/config - with a different “notation” - i also see my GUI options reflected there
  • i fail to understand how it works together
  • i fail to enable DEBUG logging for concentratord
  • i see no logging at all for chirpstack-udp-forwarder
    As you might have guessed, i’m pretty new to chirpstack …
4

I assume you mean ChirpStack Gateway OS when you refer to “pi full image”.

I don’t use ChirpStack Gateway OS myself and have no experience with it. So I looked at the Chirpstack GitHub repository to see how things are going…

chirpstack-openwrt-feed/chirpstack/chirpstack-concentratord/files/chirpstack-concentratord.sh

	cat > /var/etc/$config_name/concentratord.toml <<- EOF
		[concentratord]
			log_level="INFO"
			log_to_syslog=true
			stats_interval="30s"
			disable_crc_filter=false

		[concentratord.api]
			event_bind="ipc:///tmp/concentratord_event"
			command_bind="ipc:///tmp/concentratord_command"

		[gateway]
			lorawan_public=true
			model="$model"
			region="$region"
			gateway_id="$gateway_id"
			model_flags=[$model_flags]
			antenna_gain=$antenna_gain

Please, check this /var/etc/$config_name/concentratord.toml.

Maybe someone else can help you if this wasn’t the right solution?

5

Hi,

yes currently using “Chirpstack Gatewax OS” …

and, you’re kind of right:
if the chirpstack-concentratord service is restarted (to re/read its config), /lib/functions/chirspstack-concentratord.sh is used to generate /var/etc/…/concentratord.toml - with some settings hardcoded like log_level …

At least now i see

Thu Jan 23 15:27:25 2025 user.debug chirpstack-concentratord-sx1302[20850]: Could not get GPS epoch, uplink_id: 2702520030, error: gps_ref_valid = false
Thu Jan 23 15:27:25 2025 user.debug chirpstack-concentratord-sx1302[20850]: Could not get GPS time, uplink_id: 2702520030, error: gps_ref_valid = false