Multi-Protocol SDK Version 2.12.1 (August 29 2025) - Release Notes#
The Multiprotocol software development kit (SDK) provides Wi-Fi and BLE co-existence and packet traffic arbitration (PTA) features.
Click here for earlier releases.
Release Summary#
Key Features | API Changes | Bug Fixes | Chip Enablement
Key Features#
None
API Changes#
None
Bug Fixes#
Fixed firmware hang issue while trying to perform BT SPP disconnection during simultaneous WLAN scan and BTC SPP data transfer.
Chip Enablement#
None
Key Features#
New Features | Enhancements | Removed Features | Deprecated Features
Note: See Feature Matrix for a list of any applicable APIs, examples, software variants, modes, hardware, and host interfaces for each feature.
New Features#
None
Enhancements#
None
Removed Features#
None
Deprecated Features#
None
API Changes#
New APIs | Modified APIs | Removed APIs | Deprecated APIs
New APIs#
None
Modified APIs#
None
Removed APIs#
None
Deprecated APIs#
None
Bug Fixes#
ID | Issue Description | GitHub / Salesforce Reference (if any) | Affected Chip Revision, Hardware, Host Interfaces |
---|---|---|---|
1465515 | Resolved a firmware hang issue that occurred during Bluetooth SPP disconnection while a WLAN scan and BTC SPP data transfer were running simultaneously. | None |
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Chip Enablement#
None
Application Example Changes#
New Examples | Modified Examples | Removed Examples | Deprecated Examples
New Examples#
None
Modified Examples#
None
Removed Examples#
None
Deprecated Examples#
None
Known Issues and Limitations#
ID | Issue or Limitation Description | GitHub / Salesforce Reference (if any) | Workaround (if any) | Affected Chip Revision, Hardware, Host Interfaces |
---|---|---|---|---|
NA | In Wi-Fi + BLE mode, BLE may disconnect if the supervision timeout is set below 16 seconds. | None | None |
|
NA | WPS does not work. | None | None |
|
NA | In Wi-Fi + BLE or BLE-only modes, BT/BLE reconnection issues may occur when Wi-Fi disconnects. | None | None |
|
1215476 | In Wi-Fi + BT mode, Wi-Fi throughput logs are not displayed in serial terminals (for example, TeraTerm) when BT SPP is connected using the wlan_bt_throughput_app demo. | None | None |
|
NA | In Wi-Fi + BT/BLE CoEx mode, high Wi-Fi broadcast traffic may cause BT/BLE disconnections. | None | None |
|
NA | In Wi-Fi + BT mode, continuous Wi-Fi data may prevent BT from reconnecting after disconnection. | None | None |
|
NA | In Wi-Fi + BLE mode, Wi-Fi connection attempts may be unsuccessful when the BLE scan interval and scan window parameters are equal. | None | None |
|
NA |
In Wi-Fi + AE Coexistence:
|
None | None |
|
NA | Wi-Fi STA + BT + BLE multiprotocol use cases requires a detailed understanding of use cases and associated configurations. Contact Silicon Labs support for additional details. | None | None |
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