[swissskimmilk]

Firmware for the WifiSwitch board (ESP32-C3 + TPS22810 + INA260), used as a BLE-controlled latched power switch for commercial altimeters. New PlatformIO project at firmware/Bluetooth_Switch/, extending esp32c3_usb_base.

Behaviour

• Output is latched: ON stays on until an explicit OFF (disable). A BLE disconnect never changes it.
• Across a non-power-on reset (watchdog/panic/brownout) the EN pad is held with gpio_hold and the state is restored from RTC memory; a power cycle comes up OFF.
• Open BLE link (no pairing/encryption), advertising as STAR-Switch-XXXX. Output characteristic: write 0x01/0x00. Status characteristic: 17-byte packet with supply V/I/P from the INA260, the VOUT sense state (load present / open / live), uptime and reset reason. Layout in the README for the website side.
• USB serial console: on | off | status.
• Low power: 80 MHz CPU, 1 s advertising, 300-400 ms connection interval, INA260 in triggered mode.

Not yet verified on hardware

• Sense thresholds (load/open/live) are estimates from the schematic and need bench calibration against a real altimeter.
• gpio_hold keeping the output through an MCU reset needs a bench test.
• Status LED (SK6805) and light sleep are not implemented yet.

Builds clean with pio run; not yet flashed.

[inez9]

lgtm