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https://github.com/meshtastic/firmware.git
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Andrew Yong
026213aab7
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>
Meshtastic Firmware
Overview
This repository contains the official device firmware for Meshtastic, an open-source LoRa mesh networking project designed for long-range, low-power communication without relying on internet or cellular infrastructure. The firmware supports various hardware platforms, including ESP32, nRF52, RP2040/RP2350, and Linux-based devices.
Meshtastic enables text messaging, location sharing, and telemetry over a decentralized mesh network, making it ideal for outdoor adventures, emergency preparedness, and remote operations.
Get Started
- 🔧 Building Instructions – Learn how to compile the firmware from source.
- ⚡ Flashing Instructions – Install or update the firmware on your device.
Join our community and help improve Meshtastic! 🚀
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