Add Lilygo T-Impulse-Plus

[vidplace7]

Adds support for Lilygo T-Impulse-Plus.

Changes Made

• New board definition: boards/t-impulse-plus.json
• New variant: variants/nrf52840/t-impulse-plus/ (variant.h, variant.cpp, platformio.ini)
• Added custom_meshtastic_* metadata to variants/nrf52840/t-impulse-plus/platformio.ini so the variant is correctly picked up by the CI build matrix and device manifest generator (bin/platformio-custom.py):
  • custom_meshtastic_hw_model = 135
  • custom_meshtastic_hw_model_slug = T_IMPULSE_PLUS
  • custom_meshtastic_architecture = nrf52840
  • custom_meshtastic_actively_supported = true
  • custom_meshtastic_support_level = 1
  • custom_meshtastic_display_name = LILYGO T-Impulse Plus
  • custom_meshtastic_tags = LilyGo
  • custom_meshtastic_requires_dfu = true
  • board_level = pr
• HW_VENDOR mapping added to src/platform/nrf52/architecture.h

Working

• Display
• Vibration Motor (acts as a notification LED for now)
• Front touch sensor (acts as button)
• Battery reading
• LoRa
• Vibrate upon screen-touch (haptic feedback) - thanks @caveman99 🍻
• GPS - thanks @caveman99 📡
• IMU (accelerometer)

Not Working / Known Issues

• UI is oversized, even with OLED_TINY changes. This will need some special consideration @HarukiToreda

Dependencies

• Add lilygo T-Impulse-Plus protobufs#918
• T-Echo-Card support #10267

🤝 Attestations

• I have tested that my proposed changes behave as described.
• I have tested that my proposed changes do not cause any obvious regressions on the following devices:
  • Heltec (Lora32) V3
  • LilyGo T-Deck
  • LilyGo T-Beam
  • RAK WisBlock 4631
  • Seeed Studio T-1000E tracker card
  • Other: Lilygo T-Impulse-Plus nRF52840

[Copilot]

Pull request overview

Adds support for the LilyGo T-Impulse-Plus (nRF52840) wristband: SSD1315 OLED, SX1262 LoRa, MIA-M10Q GPS, TTP223 touch button, vibration motor used as notification/haptic feedback, and the SGM41562 I²C charger for input-power/charge-status reporting. Also introduces a small reusable HapticFeedback driver and an SGM41562 charger driver that AnalogBatteryLevel consults for isVbusIn()/isCharging().

Changes:

• New nRF52840 variant (variants/nrf52840/t-impulse-plus/) plus its boards/t-impulse-plus.json, with a new HW_VENDOR mapping in src/platform/nrf52/architecture.h.
• New src/power/SGM41562.{h,cpp} charger driver, wired into src/Power.cpp behind HAS_SGM41562.
• New src/input/HapticFeedback.{h,cpp} with InputBroker integration that emits a short pulse on touch press and an armed long-press pulse on BACK fire.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
variants/nrf52840/t-impulse-plus/variant.h	Pin map, capabilities (display, GPS, SX1262, IMU, charger, haptic), I²C/SPI/QSPI wiring.
variants/nrf52840/t-impulse-plus/variant.cpp	g_ADigitalPinMap and initVariant() (QSPI CS high, battery sense enable, RT9080 LDO enable).
variants/nrf52840/t-impulse-plus/platformio.ini	New PlatformIO env extending nrf52840_base. Missing the customary custom_meshtastic_* metadata used elsewhere.
boards/t-impulse-plus.json	PlatformIO board definition. variant field and missing variants_dir need attention.
src/platform/nrf52/architecture.h	Maps the T_IMPULSE_PLUS build flag to HardwareModel_T_IMPULSE_PLUS.
src/power/SGM41562.{h,cpp}	I²C driver for the SGM41562 buck charger with cached refresh and ship-mode/charge-enable control.
src/Power.cpp	Calls initSGM41562 in Power::setup() and consults the charger for isVbusIn/isCharging.
src/input/HapticFeedback.{h,cpp}	Non-blocking GPIO motor pulser using OSThread, with delayed pulse arm/cancel.
src/input/InputBroker.cpp	Hooks the haptic driver into the touch button (press pulse + armed long-press pulse).

[lyusupov]

It was reported by LilyGO R&D department that SGM41562 driver needs an update to match current revision(s) of the IC supplied with the T-Impulse Plus device

The chip ID and registers of the old version of the SGM41562 are incompatible with the new version of the SGM41562. If you use the old version of the SGM41562 library, it will report an error. I only recently updated the SGM41562 library – you can take a look here:
SGM41562xx changes