Bluetooth Low Energy (BLE) Firmware Guide
Wireless Protocols
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.
Key Topics
Supported Hardware
nRF52832
Cost-effective Bluetooth 5.4 SoC with 512KB Flash and 64KB RAM, ideal for wearables, beacons, and low-power sensor applications.
View platformnRF52840
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.
View platformnRF5340
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.
View platformnRF54L15
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 platformESP32
Dual-core Wi-Fi and Bluetooth combo chip with extensive peripheral support. One of the most popular IoT microcontrollers for prototyping and production.
View platformESP32-S3
AI-capable dual-core MCU with vector instructions for neural network acceleration, Wi-Fi, and BLE 5.0. Ideal for AIoT edge computing applications.
View platformESP32-C3
Cost-effective RISC-V single-core Wi-Fi and BLE 5.0 chip. A great choice for simple connected devices where cost and power matter.
View platformMore Wireless Protocols
Thread 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 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 moreWi-Fi Connectivity
High-throughput wireless networking for IoT devices needing fast data transfer, web interfaces, or integration with existing IP infrastructure. Wi-Fi 6 brings improved efficiency.
Learn moreFrequently Asked Questions
Start building with Bluetooth Low Energy (BLE)
Generate firmware documentation and code scaffolds optimized for Bluetooth Low Energy (BLE) development on your chosen hardware platform.