Configuration

Configuration

Item	Where stored / changed	Current behavior
Device name	NVS; device-name API	Persists and is returned by device information.
Network Fallback	NVS; fallback API	Controls runtime failover/restore, not Ethernet-first startup.
Device password	NVS; auth APIs	Set, verify, change, and clear behavior exists; not global API authorization.
Wi-Fi credentials	NVS; Wi-Fi API	Up to five slots can be stored; active boot/fallback path uses slot 0.
RS232 devices	%AppData%\FileLinkDiscovery\configured_devices.json	Windows JSON persistence.
Remembered passwords	%AppData%\FileLinkDiscovery\device_passwords.json	Optional plain-JSON convenience storage.

Network Fallback

When enabled, Ethernet loss can trigger a Wi-Fi fallback attempt. A usable Ethernet connection stable for 10 seconds can become active again. A fault state can occur when Ethernet is lost while fallback is disabled or a fallback attempt fails.

Firmware configuration sources

• esp32-firmware/sdkconfig
• esp32-firmware/partitions.csv
• esp32-firmware/main/hardware_config.h
• esp32-firmware/main/wifi_config.h
• esp32-firmware/main/idf_component.yml

See Hardware and OTA Updates for configuration cautions.