nRF54L05 Ultra-Low-Power Beacon Firmware
Build a next-generation ultra-low-power BLE beacon with the nRF54L05 — combining the latest CRACEN security hardware with the nRF54L series' record-breaking sleep current for 5+ year coin-cell life.
Why This Combination
The nRF54L05 delivers the lowest sleep current in the nRF54L family while including hardware cryptographic acceleration — ideal for beacons that need tamper-proof configuration and decades-long battery projection.
Protocols & Connectivity
nRF54L05
Entry-level nRF54L series SoC with ARM Cortex-M33 and RISC-V co-processor. Ultra-low-power BLE 5.4 with 512KB Flash — the most affordable chip in the nRF54L family.
View platformBLE Beacon
Bluetooth Low Energy beacon for indoor positioning, proximity marketing, and asset presence detection. Optimized for years of battery life on a coin cell.
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 nrf54l05 ultra-low-power beacon
Generate all 12 firmware documents and production-ready code scaffolds for nRF54L05 + ble beacon in minutes.