67 lines
1.9 KiB
Markdown
67 lines
1.9 KiB
Markdown
# Packet Forwarder
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SSH to the Raspberry Pi.
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Run `raspi-config` and
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- Enable SPI
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- Enable I2C
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- Turn off login shell but keep serial port active
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- Reboot
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Clone the packet forwarder repository: `git clone https://github.com/Lora-net/sx1302_hal.git`.
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Go into the repo and run `make`.
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Make pf user + give permissions
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- `sudo useradd -m -s /usr/sbin/nologin pf`
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- `-m`: create home
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- `-s /usr/sbin/nologin`: don't allow logging in; the user's only purpose is to own the packet forwarder process
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- `pf`: the username
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- `sudo usermod -aG gpio,spi,i2c,dialout pf`
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From the packet forwarder repo, copy files to pf user's home and set permissions:
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```sh
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sudo cp packet_forwarder/{global_conf.json.sx1250.US915,lora_pkt_fwd} /home/pf
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sudo cp tools/reset_lgw.sh /home/pf
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sudo chown pf:pf /home/pf/{global_conf.json.sx1250.US915,lora_pkt_fwd,reset_lgw.sh}
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sudo chmod +x /home/pf/{lora_pkt_fwd,reset_lgw.sh}
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```
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Modify the packet forward config at `/home/pf/global_conf.json.sx1250.US915`. Change `gateway_ID` to something nice (????). 8 bytes (16 uppercase hex characters)
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Modify the `reset_lgw.sh` file to have the following GPIO values, [ref](https://wiki.seeedstudio.com/WM1302_module/#step4-run-semtech-sx1302-packet-forwarder):
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```sh
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SX1302_RESET_PIN=17 # SX1302 reset
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SX1302_POWER_EN_PIN=18 # SX1302 power enable
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SX1261_RESET_PIN=5 # SX1261 reset (LBT / Spectral Scan)
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AD5338R_RESET_PIN=13 # AD5338R reset (full-duplex CN490 reference design)
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```
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Create SystemD unit file at `/etc/systemd/system/packet-forwarder.service`:
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```systemd
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[Unit]
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Description=SX1302 Packet Forwarder
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After=network.target
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StartLimitIntervalSec=0
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[Service]
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Type=simple
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Restart=always
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RestartSec=1
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User=pf
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WorkingDirectory=/home/pf
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ExecStart=/home/pf/lora_pkt_fwd -c global_conf.json.sx1250.US915
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[Install]
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WantedBy=multi-user.target
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```
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Start and enable `sudo systemctl enable --now packet-forwarder.service`.
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Check that it is running with `sudo systemctl status packet-forwarder.service`.
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