nRF9131 Firmware Development
Nordic Semiconductor
Ultra-compact LTE-M/NB-IoT SiP (System-in-Package) with DECT NR+ support and GNSS. The smallest form-factor nRF91 series chip for space-constrained cellular IoT designs. Build production-ready firmware faster with AI-powered documentation and code generation from FirmwareMaestro.
Specifications
1MB
256KB
ARM Cortex-M33
64 MHz
16
Supported Protocols
Generated Documentation
FirmwareMaestro generates these 12 document types tailored specifically for nRF9131 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
Cellular Asset Tracker
GPS-enabled asset tracking device using cellular connectivity (LTE-M/NB-IoT) for real-time location monitoring of vehicles, shipments, or equipment.
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
nRF9131 Smart Agriculture Sensor
Build a compact solar-powered agricultural monitoring sensor with the nRF9131 — the smallest nRF91 SiP enables space-constrained soil and weather sensor nodes with long-range cellular reporting.
Learn moreLTE-M & NB-IoT Cellular
Low-power wide-area network (LPWAN) cellular technologies optimized for IoT. LTE-M supports mobility and voice, while NB-IoT excels at stationary deep-indoor coverage.
Learn moreZephyr RTOS
Open-source, scalable real-time operating system by the Linux Foundation, supporting 600+ boards. The foundation of Nordic's nRF Connect SDK and increasingly popular across the embedded industry.
Learn moreCellular Asset Tracker
GPS-enabled asset tracking device using cellular connectivity (LTE-M/NB-IoT) for real-time location monitoring of vehicles, shipments, or equipment.
Learn moreSmart Agriculture Sensor
Solar-powered field sensor monitoring soil moisture, temperature, light levels, and weather conditions with long-range cellular or LoRa connectivity.
Learn moreFrequently Asked Questions
Start your nRF9131 project
Generate comprehensive firmware documentation and production-ready code scaffolds for the nRF9131 in minutes.