ESP8266 Single Core MicroController
- MicroPython
- Visual Studio Code
- PyMakr (VScode Extension)
$ pip install esptool
$ esptool.py --port /dev/ttyUSB0 erase_flash
$ esptool.py --port /dev/ttyUSB0 write_flash -fs 4MB -fm dout 0x0 ./ESP8266_GENERIC-20231005-v1.21.0.binFor decades, Wake-On-LAN has been a reliable method for remotely activating devices by broadcasting a magic packet within a Local Area Network (LAN). However, its limitation to LAN networks poses a challenge. The objective is to extend this capability to Wide Area Networks (WAN) while maintaining a close-knit and secure environment.
Developing an Object-Oriented Programming (OOP) and Event Handling system for a resource-constrained microcontroller demands a meticulous and efficient design. The objective is to strike a balance between resource optimization and code flexibility, ensuring adaptability for significant alterations or feature expansions in the future.
At a high level, the microcontroller follows a design where it subscribes to an MQTT server and awaits messages upon establishing a WiFi connection. Each incoming message is encapsulated in an envelope containing a type and payload. The system selectively processes only recognized message types, treating others as NOOP (No Operation).
MQTT, which stands for Message Queuing Telemetry Transport, is a lightweight and open-source messaging protocol designed for small sensors and mobile devices with high-latency or unreliable networks. It was developed by IBM in the late 1990s and has since become a widely adopted standard in the field of the Internet of Things (IoT) and other scenarios where efficient and reliable communication is essential.
The ESP8266 is a single-core microcontroller, and it doesn't natively support multi-threading in the traditional sense of having multiple independent threads of execution running simultaneously. However, you can achieve a form of multitasking or concurrency by using cooperative multitasking or task scheduling.
| Technical Details | |
|---|---|
| Firmware | MicroPython (custom installed) |
| Model | NodeMCU 12F |
| Processor | ESP8266 (Tensilica L106 32-bit RISC) |
| Clock Speed | 80MHz |
| Flash Memory | 4 MB |
| Data RAM | 96kb |
| WiFi | 802.11 b/g/n |
| Operating Voltage | 3.3V |
| USB to Serial Interface | CH340G |
| LxBxH | 58 x 31 x 13 mm |
Purchase (not sponserd)