Wi-Fi credentials now live in the widget's own NVS (up to 8 networks)
instead of the driver's single slot. The save handler just appends to
the list and reboots, so it no longer calls esp_wifi_set_config in
APSTA mode -- the source of the intermittent could-not-save. A connect
task cycles the saved networks newest-first and holds the first that
connects, re-scanning on drop, so the widget follows you between
locations. The portal lists saved networks with a Forget button and an
add form. An existing driver-stored credential is migrated on first
boot. Verified end to end over the LAN: save persists across reboot,
forget removes.
ESP-IDF 5.5 + LVGL 9 firmware that plays random public cameras from
insecam.org on the T-Embed's 320x170 screen, live MJPEG where available,
a new camera every 20 seconds. Knob steps through cameras, LED ring shows
the countdown. Auto-detects the original vs CC1101 board, reuses Wi-Fi
credentials from NVS and falls back to a captive-portal setup hotspot.
Juli