nRF5340 Firmware Development
Nordic Semiconductor
Dual-core Bluetooth 5.4 SoC with dedicated application and network processors. 1MB Flash + 512KB RAM on the application core, with hardware security via ARM TrustZone. Build production-ready firmware faster with AI-powered documentation and code generation from FirmwareMaestro.
Specifications
1MB
512KB
Dual ARM Cortex-M33
128 MHz (app) / 64 MHz (net)
48
Supported Protocols
Generated Documentation
FirmwareMaestro generates these 12 document types tailored specifically for nRF5340 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
Smart Home Hub
Central smart home controller that bridges multiple wireless protocols (BLE, Thread, Zigbee, WiFi) and enables unified device management and automation.
ExploreSmart Lock
Bluetooth-enabled smart door lock with secure access control, supporting mobile app unlocking, guest access codes, and activity logging.
ExploreBLE Audio Device
Bluetooth LE Audio device supporting LC3 codec, Auracast broadcast audio, and hearing aid compatibility for next-generation wireless audio products.
ExploreMedical Wearable
Clinical-grade wearable device for continuous health monitoring including ECG, SpO2, and body temperature, with secure data transmission to healthcare systems.
ExplorePoint of Sale Terminal
Compact payment terminal with secure element integration, NFC/contactless reader, display, and cellular/WiFi connectivity for mobile commerce.
ExploreRelated Resources
nRF5340 BLE Audio Device
Build a Bluetooth LE Audio device with the nRF5340 — supporting LC3 codec, Auracast broadcast audio, and multi-stream capabilities for next-gen wireless audio.
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 moreSmart Home Hub
Central smart home controller that bridges multiple wireless protocols (BLE, Thread, Zigbee, WiFi) and enables unified device management and automation.
Learn moreSmart Lock
Bluetooth-enabled smart door lock with secure access control, supporting mobile app unlocking, guest access codes, and activity logging.
Learn moreFrequently Asked Questions
Start your nRF5340 project
Generate comprehensive firmware documentation and production-ready code scaffolds for the nRF5340 in minutes.