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* feat: add Raspberry Pi Pico 2 + W5500 + E22-900M30S variant Adds community variant for Raspberry Pi Pico 2 (RP2350, 4 MB flash) with external WIZnet W5500 Ethernet module and EBYTE E22-900M30S LoRa module (SX1262, 30 dBm PA, 868/915 MHz). Key details: - LoRa on SPI1: GP10/11/12/13 (SCK/MOSI/MISO/CS), RST=GP15, DIO1=GP14, BUSY=GP2, RXEN=GP3 (held HIGH via SX126X_ANT_SW) - W5500 on SPI0: GP16/17/18/19/20 (MISO/CS/SCK/MOSI/RST) - SX126X_DIO2_AS_RF_SWITCH: DIO2→TXEN bridge on module handles PA - SX126X_DIO3_TCXO_VOLTAGE 1.8: TCXO support via EBYTE_E22 flags - DHCP timeout reduced to 10 s to avoid blocking LoRa startup - GPS on UART1/Serial2: GP8 TX, GP9 RX - Reuses WIZNET_5500_EVB_PICO2 code paths for Ethernet init Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * pico2_w5500_e22: rename define and address review feedback Rename WIZNET_5500_EVB_PICO2 to PICO2_W5500_E22 so the variant-specific define matches the variant directory name and isn't confused with an on-board EVB SKU. Review fixes from PR #10135: - Gate the 10 s Ethernet DHCP timeout behind PICO2_W5500_E22 so other Ethernet builds keep the default 60 s behavior; apply the same timeout to reconnectETH() for consistency. - Drop the unused -D EBYTE_E22 flag; EBYTE_E22_900M30S already selects TX_GAIN_LORA / SX126X_MAX_POWER in src/configuration.h. - Rewrite "on-board W5500" comments to describe the external module. - Correct README TX_GAIN_LORA value (7, not 10) and drop the EBYTE_E22 row. * fix(pico2_w5500_e22): drop DEBUG_RP2040_PORT=Serial The arduino-pico framework hooks _write() when DEBUG_RP2040_PORT=Serial is set and dumps raw debug bytes onto USB CDC, corrupting any binary protobuf stream sent through StreamAPI (e.g. `meshtastic --port COMx`). The variant excludes BT and WiFi, so the primary client transport is Ethernet TCP via ethServerAPI — unaffected — but users who configure the node over USB serial would see protobuf decode failures from debug-byte interleaving. Removing the flag restores clean USB CDC. Debug output can still be enabled per-build by adding -D DEBUG_RP2040_PORT=Serial1 to redirect to UART0 instead of USB CDC. * feat: add Ethernet OTA support for RP2350/W5500 boards Adds over-the-air firmware update capability for RP2350-based boards with a WIZnet W5500 Ethernet module (e.g. pico2_w5500_e22). Protocol (MOTA): - SHA256 challenge-response authentication with a configurable PSK (override via USERPREFS_OTA_PSK; default key ships in source) - 12-byte header: magic "MOTA" + firmware size + CRC32 - Firmware received in 1 KB chunks, verified with CRC32, written via Updater (picoOTA), then device reboots to apply - Constant-time hash comparison prevents timing attacks on auth - 30s inactivity timeout + 5s cooldown after failed auth - Response codes 0x00-0x08 map 1:1 to OTAResponse enum Firmware side: - ethOTA.cpp / ethOTA.h: OTA TCP server on port 4243 - ethClient.cpp: wire initEthOTA/ethOTALoop into reconnect loop - main-rp2xx0.cpp: hardware watchdog (8s, paused during debug) - pico2_w5500_e22/platformio.ini: HAS_ETHERNET_OTA flag, filesystem_size bumped to 0.75m for OTA staging Host side: - bin/eth-ota-upload.py: Python uploader with progress and full result-code mapping (matches OTAResponse 0x00-0x08) * style(eth): clang-format ethOTA.cpp per repo .clang-format Reformat to the repo trunk clang-format config (IndentWidth 4, ColumnLimit 130). Resolves the Trunk Check 'Incorrect formatting' failure on PR #10136. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
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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