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GL-AR150.md

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GL-AR150

As we only listen to the RS485-Bus we can use the internal serial interface of the GL-AR150.

prpd connection to gl ar150

In this example the cables are directly connected to the pcb:

  • black = ground
  • blue = RX
  • orange = 3.3V

Setup

This description is only one possible setup and a documentation of my own personal setup, other configurations (uplink via WLAN, etc) are possible

Install OpenWrt as described in the official documentation.

In order to be able to use the built in serial lines (as shown in the photo above) one needs to disable the standard serial console on the serial port. Please follow the official documentation on this.

connections:
WAN -> local lan
LAN -> PowerRouter
config:
interfaces:
  lan:
    protocol: static address
    use custom DNS servers -> local router
    activate dhcp server # give PowerRouter an ip address
  wan:
    protocol: DHCP
    # assign a static address on you local lan
  wwan:
    bring up on boot: false # don't use wifi
hostnames:
  logging1.powerrouter.com -> our static lan address
dhcp and dns:
  set an infinite lease time for the powerrouter so the ip does not change
firewall:
  port forwards:
    # the PowerRouter thinks logging1.powerrouter.com is this device, so we need
    # to redirect the traffic on port 80 to the prpd http port
    protocol: TCP
    source zone: lan
    external port: 80
    destination zone: lan
    internal ip address: our static lan address
    internal port: 8000 # this is where prpd http listens
    external ip address: our static lan address
  traffic rules:
    from "wan" to "this device" port 22 # allow ssh from wan
    from "wan" to "this device" port 8091-8092 # allow prometheus from wan
    from "wan" to "this device" port 9100 # prometheus node exporter

/etc/init.d/prpd_serial

#!/bin/sh /etc/rc.common

USE_PROCD=1

START=95
STOP=01

start_service() {
    procd_open_instance
    procd_set_param command /root/prpd
    procd_set_param env PRPD_ACTION=serial PRPD_SERIAL_PORT=/dev/ttyUSB0 PRPD_OUTPUT_HASS_MQTT_URI=tcp://mqtt-broker.local:1883/ PRPD_OUTPUT_HASS_ACTIVE=1 PRPD_OUTPUT_PROM_ACTIVE=1 PRPD_OUTPUT_PROM_PORT=8092
    procd_set_param stdout 1
    procd_set_param stderr 1
    # when within 60 seconds after inital start,
    # wait 10 seconds before restarting,
    # retry 99 times, then give up
    procd_set_param respawn 60 10 99
    procd_close_instance
}

Building

cd dev
bash download_openwrt_sdk.sh
cd ..
bash dev/build.sh