Lyra Firmware

This is the firmware release page for the Ezurio Lyra product family.

The product is available in P (PCB module) & S (System In Package) variants.

Note: The latest available firmware releases are available on the Lyra Releases Page.

Details for flashing the different image types can be found in the Firmware options and upgrade guide application note.

Note: Lyra DVKs with revision 2.3 or below use alternate labelling for SW1.

The 'BGx' position should be used when programming the Lyra Bootloader, AT Interface and Bluetooth Xpress.

The 'AT / SWO' position should be used when performing native C development.

Content

All firmware is offered in P and S versions, depending upon the Lyra variant in use.

AT Interface

The [Lyra AT Interface][Lyra AT Interface guide] application builds upon many years of AT Interface experience gained with Ezurio's BL65x range of Bluetooth modules. It offers a VSP service for cable replacement applications and GATT client and server functionality.

Binaries are available for transfer using SWD and OTA and UART bootloader.

Bluetooth Xpress

For legacy Bluetooth Xpress users, Bluetooth Xpress firmware is available for usage with the Lyra P & S modules. Note this is a frozen release and further updates will not be supported.

Further details are available in the Bluetooth Xpress migration guide.

Binaries are available for transfer using SWD and UART bootloader.

Bootloader

The Bootloader is required for operation of all other applications, and is also needed when performing native C development. This should be the first application programmed to the target device.

Further details of usage of the bootloader can be found in the Firmware options and upgrade guide.

Bootloaders are also included for use with legacy Bluetooth Xpress hardware designs. Note these differ in the location of the BOOT pin defined by the Bootloader as follows.

Binaries are available for transfer using SWD only. Please note that by default all Lyra modules ship with the Ezurio bootloader type preprogrammed.

DTM

Two DTM applications are available for testing the Lyra BLE radio performance in conjunction with the Lyra P DVK and Lyra S DVK. These are described as follows.

Binaries are available for transfer using SWD and OTA and UART bootloader.

BGAPI

This is used in conjunction with tools supplied by Silabs. Communication is performed using the BGAPI protocol. Refer also to our Lyra P BGAPI DTM and Lyra S BGAPI DTM application notes for more details.

BTSIG

This is used in conjunction with BT-SIG approved DTM test equipment. Communication is performed using the native DTM protocol as defined in the BLE specification. You can find more information in the Bluetooth SIG Bluetooth Core Specification Version 5.3 | Vol 6 (Low Energy Controller) | Part F (Direct Test Mode) which is available under https://www.bluetooth.com/specifications/bluetooth-core-specification.

[Lyra AT Interface guide]: <https://www.ezurio.com/documentation/user-guide-at-interface-application-lyra-22-24-series >