fw-anwesenheit

Setup

In order to use the LED we need to enable the SPI interface on the Rpi. You can enable it by running sudo raspi-config, or by manually adding dtparam=spi=on to /boot/firmware/config.txt. Enable PWM -> add dtoverlay=pwm to /boot/config.txt I²C fpr RTC sudo raspi-config -> interface -> enable I²C

Config

Flags:

--error or -e: Enters error state. The LED turns red and the hotspot is activated. This state gets called from systemd if the service is in a failure state.

Environment variables:

• PM3_BIN: Path to the pm3 binary. Seach in path if not set. Can also be set to the pm3_mock.sh for testing.
• LOG_LEVEL: Can be set to either "debug","warn","error","trace" or "info". Defaults to "warn" in production.
• HTTP_PORT: What port to listen on. Defaults to 80.
• HOTSPOT_IDS: A semicolon seperated list of ids to activate the hotspot with e.g. 578B5DF2;c1532b57.
• HOTSPOT_SSID: Set the hotspot ssid. Defaults to "fwa".
• HOTSPOT_PW: Set the hotspot password. Default to "a9LG2kUVrsRRVUo1". Recommended to change.

Systemd:

The service is run as a systemd service. There are two service fwa.service and fwa-fail.service. They read their config from a env file located at /etc/fwa.env. See example env file.