Lyra

  1. Datasheet
  2. Product Brief
  3. Documentation
  4. Application Note
  5. Software
  6. Technical Drawings
  7. Certification
  8. FAQs
453-00090R453-00091R453-00090C453-00091C453-00090-K1453-00091-K1453-00147R453-00147C

Datasheet

Datasheet - Lyra PDec 2025
Datasheet - Lyra SDec 2025

Product Brief

Product Brief - Lyra SeriesJun 2024

Documentation

Bluetooth Xpress (BGX) Online Documentation (External Link)Jun 2022
Overview - Bluetooth Security FeaturesMay 2026
Quick Start Guide - AT Command Set Firmware - Lyra SeriesMar 2025
Quick Start Guide - AT Interface Application - Lyra 22/24 SeriesMar 2025
Release Notes - Lyra Series AT Command Firmware vX.3.1.173Mar 2025
User Guide - AT Interface Application - Lyra 22/24 SeriesFeb 2026
User Guide - Bluetooth Xpress (BGX) Migration - Lyra ModulesMar 2025
User Guide - Firmware Options and Upgrading - Lyra 22/24 SeriesDec 2025
User Guide - Lyra P Development KitMar 2025
User Guide - Lyra S Development KitMar 2025
User Guide - Lyra Series C-Code DevelopmentMar 2025

Application Note

Application Note - Configuring the EVK UART Baud Rate - Lyra 22/Lyra 24/RM126xMar 2025
Application Note - Custom GATT Database with AT Command Set - Lyra SeriesMar 2025
Application Note - How to Set Up vSP with AT Commands - Lyra and Lyra 24 SeriesMar 2025
Application Note - Peripheral Interface Guide - Lyra, Lyra 24, and RM126x SeriesJun 2024
Application Note - Using BGAPI Direct Test Mode - Lyra POct 2024
Application Note - Using BGAPI Direct Test Mode - Lyra SMar 2025

Software

Firmware
Lyra 22 GA 3.3 Release14 days ago
Unknown OS
Lyra 22 GA3.2 release14 days ago
New Features and Performance Gains with the Lyra GA 3.0 ReleaseDec 2024
Firmware - Lyra Series (GitHub)Aug 2023
Lyra C Code Samples Aug 2022

Technical Drawings

3D Model - Lyra P (453-00090)Feb 2022
3D Model - Lyra P Dev Board (453-00091-K1)Feb 2022
3D Model - Lyra S (453-00091)Feb 2022
3D Model - Lyra S Dev Board (453-00090-K1)Feb 2022
PCB footprint (DXF and Altium format) - Lyra PFeb 2022
PCB footprint (DXF and Altium format) - Lyra SFeb 2022
SCH Symbols (Altium format) - Lyra SFeb 2022
Schematic & PCB Assembly - Lyra P Dev BoardApr 2025
Schematic & PCB Assembly - Lyra S Dev BoardApr 2025

Certification

Regulatory Information - Lyra PMar 2023
Regulatory Information - Lyra SFeb 2022
RoHS 3 - BluetoothMar 2025

FAQs

What is the correct syntax for using the AT+GCFA command to query for the handle of a characteristic or descriptor in the remote Server's GATT table?Sep 2025
What is the correct syntax for filtering with the AT+LSCN command?Sep 2025
How can I generate a .gbl file for Device Firmware Update (DFU) over UART for my custom application?May 2025
Does AT Interface application for Lyra include an RTOS?Apr 2025
What's the difference between "Reliability" and "Speed" modes when e.g. performing OTA updates with the Simplicity Connect (Si Connect) mobile app from Silicon Labs?Dec 2024
Can the UART mapping of TX, RX, CTS, and RTS pins be modified (or configured) through the AT interface application on-the-fly at runtime?Dec 2024
Where can I download the Simplicity Connect (Si Connect) mobile apps for both Android and iOS, including its source code?Dec 2024
What's the difference between the EFR Connect and Simplicity Connect (Si Connect) mobile apps from Silicon Labs?Dec 2024
What is AEC-Q100, and are the Lyra (22) and Lyra 24 series compliant with it − or not?Nov 2024
What level of Secure Vault protection is supported by the Lyra (22) and Lyra 24 series?Nov 2024
Do the Lyra (22) and Lyra 24 modules support NFC (Near Field Communication)?Nov 2024
Do Lyra (22) and Lyra 24 support the high-speed and high-accuracy Analog-to-Digital Converter (IADC) modes from Silicon Labs?Nov 2024
Is the Backup Real Time Counter (BURTC) supported on the Lyra (22) and/or Lyra 24 hardware platforms?Nov 2024
What is the difference in the Lyra series naming scheme: Lyra versus Lyra 22 and Lyra 24?Nov 2024
Why are the source code files on the GitHub repository for the Lyra Series modules empty? Where can I access the source code?Oct 2024
Does Ezurio provide breakout boards for its Bluetooth modules?Jul 2024
I've connected my Lyra development board to my PC, but it does not show up in Simplicity Studio 5. What can I do?Dec 2023
What is the Silicon Labs Proprietary Flex SDK and where can I find more information about it?Dec 2023
Do you support a Remote Command Mode (or something similar) in your AT Interface app like Wireless Xpress?Dec 2023
Is there a way in Simplicity Studio 5 to downgrade the Bluetooth Gecko SDK (GSDK) version?Dec 2023
Do you provide support for the RM126x and Lyra development boards through the Simplicity Studio 5 Software & IDE?Dec 2023
I would like to migrate from a BGX-based design and keep using Wireless Xpress. Is the Lyra (22) series pin-to-pin compatible with the BGX13 and/or BGX220?Dec 2023
Do you support any echoing support in the AT Interface app / implementation such as ATE1 & ATE0 for example?Dec 2023
Do you support User Functions (or something similar) in your AT Interface app like Wireless Xpress?Dec 2023
Can I use or modify a Lyra development board to externally debug and flash Lyra modules?Dec 2023
Which out of the box hardware can be used to externally debug and flash Lyra modules via the Serial Wire Debug (SWD) interface in development and production stage?Dec 2023
For programming and productions reasons, is there a way to merge or combine an existing bootloader and application hex image into a single file?Dec 2023
What is the „Simplicity Commander“ and where can I get it from?Dec 2023
How can Lyra be configured for Regulatory testing if there is no UART access available?Dec 2023
I’m interested in the source code of the Lyra AT Interface application and Wireless Xpress software solution. Where can I find, download, review and modify it?Dec 2023
I'm using Wireless Xpress with Lyra (22) and found a bug or have a feature request, how can I share and report it to the Ezurio team?Dec 2023
Is the Silicon Labs Wireless Xpress software solution also available for Lyra 24?Dec 2023
Do I have to configure UART hardware flow control (RTS/CTS) on my Lyra development board first, or is it already enabled by default?Dec 2023
Can I enable or disable UART hardware flow control (RTS/CTS) on my Lyra development board?Dec 2023
When working with AT Interface firmware, what is the correct syntax to use the AT+LSCN command when not wanting to use all the optional parameters?Nov 2023
Can the Lyra P and Lyra S modules support Wirepas MESH?Nov 2023
Can Lyra series modules support BLE MeshSep 2023
Why does it take so long for my VSP to establish a connection with a mobile device?Jul 2023
Can Lyra support concurrent Peripheral and Central Roles when using AT Interface?Jul 2023
Does the BL5340, BL5340PA, BL65x and Lyra BLE modules include the DC-DC LC filters on the module?Jun 2023
Does Lyra support a Multi-Central Topology as a Peripheral?Jun 2023
How is a static passkey configured for use in AT Interface Application/Firmware?Jun 2023
Is the command used to set a static passkey with AT Interface firmware, AT+PKEY, persistent through a reset or power-cycle?Jun 2023
Using STTY with the USB-SWDJun 2023
Is there a way to distinguish between a BGX and Lyra module or device running Wireless Xpress in the field without having physical access to it?Dec 2022
Does Lyra support Bluetooth LE Audio and/or the Low Complexity Communications Codec (LC3)?Dec 2022
What is the difference between the Ezurio and legacy Bluetooth Xpress (BGX) bootloader you provide for Lyra?Dec 2022
Do you support Bluetooth features like BLE Mesh, AoA (Angle of Arrival) and/or Angle of Departure (AoD) in your own AT Command Set Interface implementation?Dec 2022
Can I program and run your AT Command Set Interface firmware or the Wireless Xpress software solution from Silicon Labs on non-Lyra based devices?Dec 2022
Is it possible to get pre-programmed Lyra parts from you?Dec 2022
What are the factory states for your Lyra DVKs and modules?Dec 2022
Is it possible to add the Bluetooth GATT Configuration utility to a NCP example project in Simplicity Studio 5?Dec 2022
Does Lyra support the Matter Protocol?Dec 2022
Do I need UART hardware flow control (RTS/CTS) with Lyra, and what is your recommendation?Dec 2022
Where can I find regulatory documents, certificates, approvals and test reports for Lyra?Oct 2022
Which Silicon Labs Bluetooth Stack and Gecko SDK (GSDK) version is the Lyra AT Interface application / implementation based on?Oct 2022
Can I run with Lyra multiple firmware options simultaneously?Oct 2022
What is the minimum / maximal supported baud rate value when using the Lyra AT Command Set Interface firmware and how can I modify it?Oct 2022
Do Lyra modules support 802.15.4/Thread?Oct 2022
How can I build my own UART DFU utility (also known as uart_dfu or bt_host_uart_dfu) under Windows and/or Linux?Aug 2022
Why does the Software Development Selection Switch (SW1) on my Lyra development board look different?Aug 2022
Does Lyra S and Lyra P modules support SPIAug 2022
How to configure Packet Trace Interface for Bluetooth Low Energy traffic captureMay 2022
How to: permanently securing the Lyra deviceMay 2022
How to generate signed apploader and application firmware images using private keyMay 2022
How to add service UUID to advertising data of implemented by Silicon Labs adapted GATT serviceMay 2022
How to enable CMSIS-PACK support in IAR for Silicon Labs devicesMay 2022
How to generate IAR soc_empty projectMay 2022
How to generate GCC Makefile for soc_empty projectMay 2022
Firmware update of the application image using Segger J-Link and SWD interfaceMay 2022
Firmware update of the bootloader using Segger J-Link and SWD interfaceMay 2022
Steps to generate bootloader using Simplicity Studio for Lyra BLE modulesMay 2022
Firmware update over UART using UART XMODEM BootloaderMay 2022
Firmware update over UART using BGAPI UART DFU BootloaderMay 2022
How to build, debug bootloader project for Lyra modulesMay 2022
How to flash images to the Lyra device using commander utilityMay 2022
How to generate public and private keys using Simplicity Studio CommanderMay 2022
How to store public key into device FlashMay 2022
How to generate signed bootloader image using private keyMay 2022
Description for GEKO bootloader files and security keys, which are generated for Lyra deviceMay 2022
How to perform OTA update of Lyra devices using EFR ConnectMay 2022
Silicon Labs Bluetooth Stack Features for Lyra DevicesMay 2022
TX Power Limitations on Lyra devices for Regulatory Compliance (ETSI, FCC)May 2022
Extended list of code examples for Lyra devicesMay 2022
Firmware development - extending SOC EMPTY projectMay 2022
How to get started with developing firmware for Lyra BLE modulesMay 2022