v2.1.1

New Features

• Configure BLE connection parameters at runtime.
• Support for BL654 with I2C port expander (TI TCA9538).
• Support for suspending CAN device (TCAN4550) for low power consumption.
• Support signing Python application with user key.
• API to disable/enable the BLE SMP GATT service.
• REPL UART parameters can be controlled at runtime.
• New API to disable the default script after firmware update.
• New API to get/set BLE GAP device name.
• Erase build performance increased; filesystem erasure is much faster.
• Default boot script now prints the device's advertised name for easy identification.
• Default boot script allows easy identification of erase builds.
• Veda SL917 based on WiSEConnect 3.5.2 and connectivity FW version 1711.2.14.5.2.0.7.

Bug Fixes

• GATT server: callback could cause a crash if malloc failed.

Known Issues

• Firmware update from 1.x to 2.x firmware is not supported. The memory map and firmware signing keys have changed.
• BL5340: BLE OTA firmware update does not work
• SL917: OTA firmware updates (via network or BLE) are not supported. Low power modes are not supported.

v2.1.0

New Features

• Nordic platforms based on NCS 3.0.0 and Zephyr 4.0
• Lyra24 platform based on Simplicity SDK 2024.6.2
• SL917 platform based on Simplicity SDK 2025.6.1 and WiseConnect 3.5.1
• BL54L15/10 module supported
• cryptolib module now available on:
  • Pinnacle 100
  • MG100
  • BL5340 with networking
  • BL654 with external flash
  • BL54L15
• JSON module enabled on BL654
• CAN Bus support with TCAN4550 on:
  • BL654
  • BL54L15
• BLE GATT server supports up to 24 characteristics
• BL654/3 REPL on UART0 option available

Fixes

• asyncio.Event() now works
• BLE simultaneous connections now work

Known Issues

• Firmware update from 1.x to 2.x firmware is not supported. The memory map and firmware signing keys have changed.
• BL5340: BLE OTA firmware update does not work
• SL917: OTA firmware updates (via network or BLE) are not supported. Low power modes are not supported.

v2.0.1

Fixes

• Fix open/close directory memory leak.
• Fix python stack overflow on Pinnacle 100/MG100/BL5340.
• Fix missing machine.UART.RTS and machine.UART.CTS flags.

Known Issues

• Firmware update from 1.x to 2.x firmware is not supported. The memory map and firmware signing keys have changed.

2.0.0

New Features

• Micropython and MBED TLS heap combined
• Pinnacle 100: Low power modes supported
• Python: BLE API: GATT server and client API updates
• Python: NFC API: Add read only mode
• Python: add UICR API for Nordic nRF chipsets
• Python: asyncio enabled
• Python: regular expressions (re) enabled
• Python: added DFU (Device Firmware Upgrade) API
• Python: JSON module is builtin

Known Issues

• Firmware update from 1.x to 2.x firmware is not supported. The memory map and firmware signing keys have changed.