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026213aab74c13a55915eeb8d4a1089efe321e43
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Author SHA1 Message Date
Andrew YongandGitHub 026213aab7 feat(stm32): Add STM32 ADC support to AnalogBatteryLevel (#9369) 
Integrate STM32 battery monitoring into AnalogBatteryLevel, supporting
external GPIO ADC pins as well as internal VBAT channel.

Features:
- ADC reading using STM32 LL (Lower Layer) macros supporting external
  ADC channels and internal VBAT channel (AVBAT)
- ADC compensation using STM32 LL macros with factory-calibrated VREFINT
  (AVREF) for accurate voltage measurement
- LFP battery OCV curve for STM32WL using AVBAT (STM32 VDD absolute
  maximum supply voltage 3.9V, direct connection of Li-Po batteries is
  not supported)

Internal VBAT channel implemented in:
- Russell
- RAK3172

In these variants, ADC_MULTIPLIER = (1.01f * 3) = 3.30 as there is a
3:1 internal divider (DS13105 Rev 12 §5.3.21), and a bit of tolerance
as the actual 10% spec leads to readings much too high.


Assisted-by: Claude:sonnet-4-5

Signed-off-by: Andrew Yong <me@ndoo.sg>
 2026-04-16 10:58:54 +01:00
Jonathan BennettandGitHub 2361776992 Rename LED_PIN to LED_POWER, move handling out of main to dedicated module (#9512) 
* Rename LED_PIN to LED_POWER, move handling out of main to dedicated module

* Misc

* Remove errant endif
 2026-02-05 05:41:00 -06:00
Andrew YongandGitHub fb6d199d36 feat: Add Russell, a board designed to go Up! on a balloon (#9079) 
Hardware repository: https://github.com/Meshtastic-Malaysia/russell
- Designed to mount on an ER34615/IFR32700 cell
- RAK3172 STM32WLE5CCU6 MCU + integrated SX1262 LoRa
- CDtop CD-PA1010D GPS
- Bosch Sensortec BME280 sensor
- Consonance CN3158 LiFePO4 solar charger

Signed-off-by: Andrew Yong <me@ndoo.sg>
 2026-01-20 06:38:04 -06:00