nRF54L15 Secure Smart Lock Firmware
Build a next-generation secure smart lock with the nRF54L15 — CRACEN hardware crypto for secure BLE key management, tamper detection peripherals, and years of battery life on 2xAA cells.
Why This Combination
The nRF54L15's CRACEN security engine handles elliptic-curve key generation and BLE LESC pairing entirely in hardware, eliminating software crypto vulnerabilities in access control applications.
Protocols & Connectivity
nRF54L15
Next-generation ultra-low-power Bluetooth 5.4 SoC with RISC-V and ARM Cortex-M33 cores. Designed for ultra-constrained battery-powered devices.
View platformSmart Lock
Bluetooth-enabled smart door lock with secure access control, supporting mobile app unlocking, guest access codes, and activity logging.
View use caseAll 12 Documents Included
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.
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Learn moreFrequently Asked Questions
Build your nrf54l15 secure smart lock
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