nRF52840 Firmware Development
Nordic Semiconductor
Advanced multiprotocol SoC with 1MB Flash, 256KB RAM, and USB support. The go-to chip for Bluetooth 5.4, Thread, Zigbee, and 802.15.4 applications. Build production-ready firmware faster with AI-powered documentation and code generation from FirmwareMaestro.
Specifications
1MB
256KB
ARM Cortex-M4F
64 MHz
48
Supported Protocols
Generated Documentation
FirmwareMaestro generates these 12 document types tailored specifically for nRF52840 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
BLE Fitness Tracker
Wearable fitness device that tracks activity, heart rate, and sleep patterns over Bluetooth Low Energy, syncing data to a companion mobile app.
ExploreEnvironmental 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.
ExploreBLE Beacon
Bluetooth Low Energy beacon for indoor positioning, proximity marketing, and asset presence detection. Optimized for years of battery life on a coin cell.
ExploreSmart Lock
Bluetooth-enabled smart door lock with secure access control, supporting mobile app unlocking, guest access codes, and activity logging.
ExplorePredictive Maintenance Sensor
Vibration and temperature sensor for industrial equipment monitoring, detecting anomalies early to prevent costly downtime and failures.
ExploreRelated Resources
nRF52840 BLE Sensor
Build a Bluetooth Low Energy environmental sensor with the nRF52840 — measuring temperature, humidity, and air quality with multi-day battery life and mobile app connectivity.
Learn morenRF52840 Smart Lock
Build a secure BLE smart door lock with the nRF52840 — featuring encrypted pairing, NFC tap-to-unlock, guest access management, and tamper detection.
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 moreThread Mesh Networking
IPv6-based mesh networking protocol designed for reliable, secure, low-power IoT device communication. Thread is a foundation of the Matter smart home standard.
Learn moreBLE Fitness Tracker
Wearable fitness device that tracks activity, heart rate, and sleep patterns over Bluetooth Low Energy, syncing data to a companion mobile app.
Learn moreEnvironmental Monitor
Multi-sensor environmental monitoring station that measures temperature, humidity, air quality, and pressure, reporting data wirelessly to a central system.
Learn moreFrequently Asked Questions
Start your nRF52840 project
Generate comprehensive firmware documentation and production-ready code scaffolds for the nRF52840 in minutes.