splink-influx

splink

A utility to read performance data from Selectronic SP PRO inverters and send to the InfluxDB time-series database.

Installation

The utility expects the serial connection to the inverter to be available over Ethernet. You may use a dedicated serial to Ethernet dongle (such as that sold by Selectronic). An alternative and cheaper solution is to run ser2net on a host with a USB serial adapter.

Compiling this Go application should yield a static executable which can be deployed to a convenient host with access to both the serial host and the InfluxDB host. A simple systemd unit file might look like the following:

[Unit]
Description=Interface between SP LINK protocol and InfluxDB
After=network.target

[Service]
Type=simple
ExecStart=/usr/local/bin/splink

[Install]
WantedBy=multi-user.target

Configuration

Configuration uses the Viper configuration system. Place a file named config.yaml, config.toml, config.json (or other supported formats) in either the directory of the splink executable or /etc/splink. Supported configuration options are:

• host -- the serial to Ethernet host
• port -- the port over which serial to Ethernet is served
• influx_host -- the host running InfluxDB
• influx_port -- the port on which InfluxDB is listening for data
• password -- the management password for the SP PRO