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* Hold GC1109 PA_POWER and PA_EN during deep sleep for LNA RX wake Use rtc_gpio_hold_en to latch PA_POWER (LDO) and PA_EN (CSD) HIGH during deep sleep so the GC1109 LNA remains powered for wake-on-packet RX. Previously these pins used weak pull-ups which could lose state. On deep sleep wake, skip these pins in the blanket RTC hold release and instead release them in SX126xInterface::init() after GPIO registers are set HIGH first, avoiding a power glitch on the GC1109. Trade-off: ~6.5mA additional deep sleep current for significantly improved wake-on-packet RX sensitivity (~17dB). Reference: https://github.com/meshcore-dev/MeshCore/pull/1600 * Add LDO startup delay before GC1109 chip enable TLV75733P LDO has ~550us startup time (datasheet tSTR). On cold boot, wait 1ms for VBAT to stabilise before driving CSD/CPS, per GC1109 power-on sequence requirement. On deep sleep wake the LDO is held on via RTC latch so no delay is needed.
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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