FlorianandClaude Opus 5
4462ac94bf
0.1.7 shipped esp32c3 flags with no -march at all, so every ESP32-C2/C3 build fell back to the compiler default (rv32imafdc) and emitted atomic and hardware-FP instructions the core does not implement. The firmware panicked with "Illegal instruction" during C++ static init — on the first std::shared_ptr refcount, inside the Arduino core's global SPIFFS constructor — so the board boot-looped before printing a single line of OMG output. That is issue #2336: esp32c3-dev-c2-ble dev builds boot-loop while 1.8.1 (built on arduino-esp32 2.x, which passed -march=rv32imc explicitly) is fine. The flag was lost in packaging, not in the compiler: ESP-IDF >= 5.5.2 moved the toolchain base flags into @response files and the lib-builder's flag extraction silently dropped them. The precompiled libs were always correct RV32IMC code. 0.1.8 restores -march across c_flags/cpp_flags/S_flags/ld_flags and pioarduino-build.py, and fails the lib build if a target's ISA flag ever goes missing again (theengs/esp32-arduino-lib-builder#9). Xtensa targets were never affected — each core has its own GCC driver whose default multilib already matches — but they are rebuilt from the same bundle, so esp32/esp32s3 want a smoke test alongside the C3. Bench-verified on an ESP32-C3 rev v0.4: boot-loops on 0.1.7 (30 panics in 20 s, MTVAL 0x06f7202f), boots and decodes BLE on 0.1.8 with no project-level flags. Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
OpenMQTTGateway aims to unify various technologies and protocols into a single firmware. This reduces the need for multiple physical bridges and streamlines diverse technologies under the widely-used MQTT protocol.
Sponsors
Documentation
The documentation is here
New to OpenMQTTGateway? Follow the Getting Started guide to flash a board from your browser and see your first sensor data in about 15 minutes.
The reference sheet, with the list of all functions, pinouts is here
Upload
Upload OpenMQTTGateway directly from the upload page (no additional software required) or build your own configuration with PlatformIO.
Using OpenMQTTGateway ?
Support open-source development through sponsorship, it helps keep the project healthy and evolving.
Products powered by OpenMQTTGateway
Theengs Bridge, Bluetooth gateway (BLE) with external antenna
Theengs bridge is a powerfull BLE to MQTT gateway for over 100 sensors. Equipped with an Ethernet port, and external antenna, ensuring an enhanced range for your BLE sensors. It supports also WiFi connectivity.
Theengs Plug, Bluetooth gateway (BLE) gateway and Smart Plug
Theengs plug brings the following features:
- BLE to MQTT gateway, tens of Bluetooth devices supported thanks to Theengs Decoder library. The plug uses an ESP32 acting as a BLE to Wifi gateway to scan, decode and forward the data of the nearby sensors,
- Smart plug that can be controlled remotely,
- Energy consumption monitoring,
- Device tracker,
- Presence detection (beta),
- Local connectivity first.
Support the project by purchasing the Theengs bridge or the Theengs plug
Compatible items
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List of supported BLE devices, thermometers, scales, plant sensors, beacons...
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Boards guide, RF Bridge, IR, BLE gateways...
Running on a computer If you want to use the BLE decoding capabilities of OpenMQTTGateway with a Raspberry Pi, Windows or Unix PC you can now leverage Theengs Gateway.
- Parts to build your gateway, DHT, RF, IR emitters and receivers...
Compatible controllers, saas or software
Contributors ✨
Thanks goes to these wonderful people who helped OpenMQTTGateway on Github and to the users contributions into the community.
Support
For Questions or Support please don't open an issue, first go to the docs and if you don't find your answer there, you can post your question in the community forum
Help
If you like the project and/or used it please consider supporting it! It can be done in different ways:
- Helping other users in the community
- Contribute to the code or the documentation
- Donate or sponsor the project developers
- Make a video or a blog article about what you have done with OpenMQTTGateway and share it to the community
Media
- Hackaday - ARDUINO LIBRARY BRINGS RTL_433 TO THE ESP32
- CNX Software - 433 MHz is not dead! Using an ESP32 board with LoRa module to talk to 433 MHz sensors
- RTL_433 PORTED TO ESP32 MICROCONTROLLERS WITH CC1101 OR SX127X TRANSCEIVER CHIPS
- Using low-cost wireless sensors in the unlicensed bands
- SMART PLUG ESP32 OPENMQTTGATEWAY SERVING AS AN BLE MQTT GATEWAY AND A POWER METER
Theengs Plug
433Mhz and BLE
BLE
433Mhz
LORA
