# 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 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.