ESP32 Firmware Development
Espressif Systems
Dual-core Wi-Fi and Bluetooth combo chip with extensive peripheral support. One of the most popular IoT microcontrollers for prototyping and production. Build production-ready firmware faster with AI-powered documentation and code generation from FirmwareMaestro.
Specifications
Up to 16MB (external)
520KB SRAM
Dual Xtensa LX6
240 MHz
34
Supported Protocols
Generated Documentation
FirmwareMaestro generates these 12 document types tailored specifically for ESP32 projects:
PRD
Comprehensive document defining what your firmware product needs to do — functional requirements, non-functional requirements, power budgets, user stories, and acceptance criteria.
Architecture Doc
High-level system design showing how firmware modules interact — task architecture, communication patterns, memory layout, and dependency maps with Mermaid diagrams.
HAL Doc
Defines the interface layer between your firmware application and hardware peripherals — GPIO, SPI, I2C, UART, ADC drivers with clean API definitions.
State Machine
Formal definition of your firmware's state machine — states, transitions, guards, actions, and error recovery paths visualized with state diagrams.
Context Bundle
Machine-readable JSON file containing all project context — hardware specs, pin mappings, library versions, and configuration — optimized for AI coding tools to consume.
Bootloader/OTA
Complete specification for the device bootloader, firmware update mechanism (DFU), and over-the-air update flow — memory partitioning, image signing, and rollback strategy.
Impl Plan
Phase-by-phase development roadmap breaking the firmware project into sprint-sized work packages with dependencies, milestones, and effort estimates.
HW Config
Detailed pin mappings, peripheral assignments, clock configuration, and power rail definitions for your specific hardware design and development kit.
Libraries/SDK
Reference guide for all software libraries, SDKs, and middleware used in the project — version pinning, initialization sequences, and API usage patterns.
Protocols Doc
Specification of all communication interfaces — BLE services, MQTT topics, REST APIs, UART protocols — with message formats, error handling, and sequence diagrams.
Peripherals
Detailed configuration for each MCU peripheral — ADC settings, timer configurations, DMA channels, interrupt priorities, and power domain assignments.
Code Files
Production-ready starter code files — main.c, CMakeLists.txt, prj.conf, Kconfig, device tree overlays, and .cursorrules — tailored to your specific hardware and project type.
Common Use Cases
Environmental Monitor
Multi-sensor environmental monitoring station that measures temperature, humidity, air quality, and pressure, reporting data wirelessly to a central system.
ExploreSmart Home Hub
Central smart home controller that bridges multiple wireless protocols (BLE, Thread, Zigbee, WiFi) and enables unified device management and automation.
ExplorePredictive Maintenance Sensor
Vibration and temperature sensor for industrial equipment monitoring, detecting anomalies early to prevent costly downtime and failures.
ExploreSmart Agriculture Sensor
Solar-powered field sensor monitoring soil moisture, temperature, light levels, and weather conditions with long-range cellular or LoRa connectivity.
ExploreRelated Resources
ESP32 Smart Home Hub
Build a multi-protocol smart home gateway with the ESP32 — bridging WiFi, BLE, and cloud services for unified device control and home automation.
Learn moreBluetooth Low Energy (BLE)
The dominant short-range wireless protocol for IoT, wearables, and consumer devices. BLE 5.4 supports data rates up to 2 Mbps, extended advertising, and direction finding.
Learn moreWi-Fi Connectivity
High-throughput wireless networking for IoT devices needing fast data transfer, web interfaces, or integration with existing IP infrastructure. Wi-Fi 6 brings improved efficiency.
Learn moreEnvironmental Monitor
Multi-sensor environmental monitoring station that measures temperature, humidity, air quality, and pressure, reporting data wirelessly to a central system.
Learn moreSmart Home Hub
Central smart home controller that bridges multiple wireless protocols (BLE, Thread, Zigbee, WiFi) and enables unified device management and automation.
Learn moreFrequently Asked Questions
Start your ESP32 project
Generate comprehensive firmware documentation and production-ready code scaffolds for the ESP32 in minutes.