WiSeConnect - Wi-Fi SDK Version 4.1.1 (Jul 29, 2026) - Release Notes#

Wi-Fi 6 + BLE (WiSeConnect) SDK Version 4.1.1

Simplicity SDK Version 2026.6.1

The Wi-Fi Software Development Kit (SDK) provides Wi-Fi 6 connectivity in multiple operating modes, including Station and Software Access Point (SoftAP).

See WiSeConnect releases for earlier releases.

Release Summary#

Key Features | API Changes | Bug Fixes | Chip Enablement

Key Features#

Added in 4.1.1#

None

Added in 4.1.0#

  • Support for Max BSS Idle to ensure that the IoT client device does not send keepalive messages frequently.

  • Support for background extended scan in Station mode.

  • Support for filtering multicast packets.

  • Improved AP mode and AP+STA mode feature qualities.

  • Logging support for WPA supplicant code.

  • New debug-logging backend (SL_DEBUG_LOG_V2) with format-string section (.log_fmt) and encoder/decoder, replacing the legacy LOG_PRINT / printf pattern across snippets.

  • New internal Buffer Manager component replacing the legacy sli_wifi_memory_manager, memory/lwip_buffers, and memory/static_buffer components.

  • New service-layer TCP/TLS advanced-configuration setters for the HTTP, MQTT, and WebSocket clients.

  • Improved performance by applying RX desense adaptively for interference levels below -82 dBm.

API Changes#

Added in 4.1.1#

None

Added in 4.1.0#

  • New v2 family of 11ax, TWT auto-selection, MC/BC filtering, and timeout configuration APIs.

  • Several legacy entry points (multicast filter, 11ax config, TWT auto-selection, timeout configuration) are now deprecated.

  • Added sl_wifi_wps_get_remaining_credentials() and remaining_credentials_count in sl_wifi_wps_response_t so applications can retrieve additional WPS credential profiles when an AP returns more than one (for example, dual-band 2.4 GHz + 5 GHz).

Bug Fixes#

Fixed in 4.1.1#

  • Fixed an issue where APIs failed with SL_STATUS_TIMEOUT and SL_STATUS_ALLOCATION_FAILED when invoked from different application threads.

  • Fixed AP client-info parsing to be length-bounded and protocol-safe, preventing malformed GO-parameter decoding and ensuring deterministic partial-result semantics.

  • Fixed Wi-Fi deinit teardown to perform symmetric resource cleanup, preventing cumulative residual-state leakage in long-duration re-initialization loops.

  • Fixed sl_wifi_set_default_interface() to match its void signature, restoring compatibility with strict compiler settings.

  • Fixed continuous SDK error logging during normal Wi-Fi operation when PRINT_ERROR_LOGS is enabled by suppressing expected asynchronous packet status reports.

  • Fixed an issue where WPA3 Wi-Fi reconnect could fail with an sl_wifi_connect() timeout (error 0x00000007).

  • Fixed an issue that caused MCS rates drop in between data transfers causing a reduction in SSL RX throughput.

Fixed in 4.1.0#

  • Fixed malformed packets originating from validation of Vendor-Specific IEs in beacons, probe responses, and association responses.

  • Improved WPA3 security stability in AP mode.

  • Fixed an issue where the EAP-TLS client did not send the complete certificate chain during mutual authentication.

  • Fixed an issue where HTTPS connections through Azure Front Door could fail with HTTP timeout error 0x1BBE1 during the TLS handshake because of a small TCP receive window size.

  • Fixed STAUT BSS Max Idle Period test failure by setting the Protected Keep-Alive Required subfield to 1 in the BSS Max Idle Period IE of the Association Request.

  • Fixed an issue where no timeout error was reported after a 120-second WPS PBC session when no WPS-PBC-enabled AP was available.

  • Fixed an issue where a TWT response was observed on the host without invoking any TWT API after the AP was power-cycled, by clearing TWT parameters on disconnection.

  • Fixed an issue where the DUT was unable to scan APs with a 1500-byte beacon frame size.

  • Fixed an issue where Wi-Fi power save mode did not resume after the access point beacon interval changed (for example, TP-Link AP).

Chip Enablement#

Added in 4.1.1#

None

Added in 4.1.0#

  • SoC: BRD4343C (SiW917Y-RB4343C) radio board for refreshed SiWG917Y SoC modules with external 32 kHz LP crystal pins; module OPNs SiWN917Y100LGAXA, SiWN917Y100LGNXA, SiWG917Y110LGNXA, SiWG917Y111MGNXA, SiWG917Y121MGNXA, SiWG917Y110LGAXA, SiWG917Y111MGAXA, SiWG917Y121MGAXA

  • NCP: BRD4357C (SiW917Y-RB4357C) radio board for refreshed SiWN917Y NCP modules with external 32 kHz LP crystal pins; module OPNs SiWN917Y100LGAXA, SiWN917Y100LGNXA.

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 applicable for each feature.

New Features#

Added in 4.1.1#

None

Added in 4.1.0#

  • Support for Max BSS Idle to ensure that the IoT client device does not send keepalive messages frequently.

  • Support for background extended scan in Station mode.

  • Support for filtering multicast packets.

  • Improved AP mode and AP+STA mode feature quality.

  • Logging support for WPA supplicant code.

  • New debug-logging backend (SL_DEBUG_LOG_V2) with format-string section (.log_fmt) and encoder/decoder, replacing the legacy LOG_PRINT / printf pattern across snippets.

  • New internal Buffer Manager component replacing the legacy sli_wifi_memory_manager, memory/lwip_buffers, and memory/static_buffer components.

  • New service-layer TCP/TLS advanced-configuration setters for the HTTP, MQTT, and WebSocket clients.

  • Improved performance by applying RX desense adaptively for interference levels below -82 dBm.

Enhancements#

Added in 4.1.1#

  • Improved errno handling to preserve standard libc/libc++ visibility while guarding SDK BSD errno redefinitions, resolving LLVM/C++ include and symbol conflicts.

  • Enhanced sync response wait/dequeue race handling with retry-until-match-or-timeout behavior, eliminating transient SL_STATUS_EMPTY/NOT_FOUND returns in common flash command flows.

Added in 4.1.0#

  • Wi-Fi snippet examples were updated to consume the new TWT v2, 11ax v2, MC/BC filter v2, and timeout configuration APIs.

  • Added a new buffer manager component that enhances internal queue accounting for TX commands and socket data queues.

  • Wi-Fi, BLE, and coex snippets were migrated from LOG_PRINT / printf to the new SL_DEBUG_LOG_V2 logger backend (test-agent / regression prints kept on printf intentionally).

  • Added detailed error code logging and data-mismatch reporting in the flash_read_write application for both TA and M4 flash regions.

  • Enhanced the WPS feature to support multiple WPS credentials.

Removed Features#

Removed in 4.1.1#

None

Removed in 4.1.0#

None

Deprecated Features#

Deprecated in 4.1.1#

None

Deprecated in 4.1.0#

None

API Changes#

New APIs | Modified APIs | Removed APIs | Deprecated APIs

New APIs#

Added in 4.1.1#

None

Added in 4.1.0#

New API Signature

Deprecated API replaced by this (if any)

sl_status_t sl_wifi_set_11ax_config_v2(const sl_wifi_11ax_config_params_t *config_11ax_params)

sl_wifi_set_11ax_config

sl_status_t sl_wifi_target_wake_time_auto_selection_v2(const sl_wifi_twt_selection_v2_t *config)

sl_wifi_target_wake_time_auto_selection

sl_status_t sl_wifi_set_groupcast_filter_config(const sl_wifi_groupcast_filter_config_t *config)

sl_wifi_configure_multicast_filter

sl_status_t sl_wifi_allowlist_mcast_add_ip(const sl_ip_address_t *ip_address, sl_ip_address_handle_t *id)

sl_wifi_configure_multicast_filter

sl_status_t sl_wifi_allowlist_mcast_remove_ip(sl_ip_address_handle_t id)

sl_wifi_configure_multicast_filter

sl_status_t sl_wifi_allowlist_mcast_remove_all(void)

sl_wifi_configure_multicast_filter

sl_status_t sl_wifi_set_beacon_drop_threshold(sl_wifi_interface_t interface, uint16_t beacon_drop_threshold)

sl_wifi_filter_broadcast

sl_status_t sl_wifi_configure_timeout(sl_wifi_interface_t interface, sl_wifi_timeout_type_t timeout_type, uint16_t timeout_value)

sl_si91x_configure_timeout

sl_status_t sl_wifi_get_timeout(sl_wifi_interface_t interface, sl_wifi_timeout_type_t timeout_type, uint16_t *timeout_value)

sl_si91x_configure_timeout

sl_status_t sl_wifi_wps_get_remaining_credentials(sl_wifi_interface_t interface, sl_wifi_wps_response_t *credentials, uint8_t credential_count)

None

Modified APIs#

Modified in 4.1.1#

None

Modified in 4.1.0#

Modified API

Change Description

sl_status_t sl_wifi_start_wps_v2(sl_wifi_interface_t interface, sl_wifi_wps_config_t config, sl_wifi_wps_response_t *response)

Now populates remaining_credentials_count in the response when the AP returns multiple credential profiles; call sl_wifi_wps_get_remaining_credentials() to retrieve additional profiles.

sl_status_t sl_wifi_get_saved_firmware_status(void)

Implementation changed from static inline in the header to a library function.

Removed APIs#

Removed in 4.1.1#

None

Removed in 4.1.0#

None

Deprecated APIs#

Deprecated in 4.1.1#

None

Deprecated in 4.1.0#

The following Wi-Fi public APIs are marked with SL_DEPRECATED_API_WISECONNECT_4_1. Legacy kept as an alias. Define SL_SUPPRESS_DEPRECATION_WARNINGS_WISECONNECT_4_1 to suppress warnings while migrating.

Deprecated API Name

Planned Removal Date

sl_wifi_set_11ax_config(uint8_t guard_interval)

2028-12

sl_wifi_target_wake_time_auto_selection(sl_wifi_twt_selection_t *)

2028-12

sl_wifi_filter_broadcast(..., uint8_t filter_bcast_tim_till_next_cmd)

2028-12

sl_wifi_configure_multicast_filter(sl_wifi_multicast_filter_info_t *)

2028-12

sl_si91x_configure_timeout(sl_wifi_timeout_type_t, uint16_t)

2028-12

sl_si91x_timeout_type_t (type alias)

2028-12

Bug Fixes#

Note: See the Feature Matrix section for a list of all hardware parts that work with the WiSeConnect SDK.

Fixed in 4.1.1#

ID Issue Description GitHub / Salesforce Reference (if any) Affected Software Variants, OPNs, Boards, Modes, Host Interfaces
1655208 Fixed an issue where APIs failed with SL_STATUS_TIMEOUT and SL_STATUS_ALLOCATION_FAILED when invoked from different application threads. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1660111 Fixed AP client-info parsing to be length-bounded and protocol-safe, preventing malformed GO-parameter decoding and ensuring deterministic partial-result semantics. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1667395 Improved errno handling to preserve standard libc/libc++ visibility while guarding SDK BSD errno redefinitions, resolving LLVM/C++ include and symbol conflicts. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1668910 Fixed Wi-Fi deinit teardown to perform symmetric resource cleanup, preventing cumulative residual-state leakage in long-duration re-initialization loops. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1681868 Fixed sl_wifi_set_default_interface() implementation to conform to its void signature, removing invalid return-value semantics and restoring strict-compiler compatibility. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1687982 Fixed continuous SDK error logging during normal Wi-Fi operation with PRINT_ERROR_LOGS enabled by suppressing expected async packet status reports as errors (no application behavior change). None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1672053 Fixed SLC validation warnings in Wi-Fi component metadata and include-path declarations, restoring clean SDK validation for affected component configurations. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1656537 Fixed an issue where WPA3 Wi-Fi reconnect could fail with an sl_wifi_connect() timeout (error 0x00000007). None
  • Firmware variants: Standard and Lite
  • OPNs: All applicable
  • Boards: All applicable
  • Modes: SoC
  • Host interfaces: N/A
1458372 Fixed an issue where MCS rates dropped between data transfers, resulting in reduced SSL RX throughput. None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART

Fixed in 4.1.0#

ID Issue Description GitHub / Salesforce Reference (if any) Affected Software Variants, OPNs, Boards, Modes, Host Interfaces
1568490 Fixed an issue where validation of vendor-specific information elements (IEs) in beacons, probe responses, and association responses could result in malformed packets. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1563275 Improved the WPA3 security stability in AP mode. None
  • Firmware variants: Standard
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1602393 Fixed an issue where the EAP-TLS client did not send the complete certificate chain during mutual authentication. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1635466 Fixed STAUT BSS Max Idle Period test failure by setting the Protected Keep-Alive Required subfield to 1 in the BSS Max Idle Period IE of the Association Request. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1633263 Fixed an issue where no timeout error was reported after a 120-second WPS PBC session when no WPS-PBC-enabled AP was available. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1636396 Added host-side support for multiple WPS credential profiles: sl_wifi_start_wps_v2() now sets remaining_credentials_count in sl_wifi_wps_response_t, and the new sl_wifi_wps_get_remaining_credentials() API retrieves the additional profiles (up to two beyond the primary) when an AP returns multiple bands. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1651473 Fixed an issue where a TWT response was observed on the host without invoking any TWT API after the AP was power-cycled, by clearing TWT parameters on disconnection. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1492575 Added detailed error code logging and data-mismatch reporting in the flash_read_write application for both TA and M4 flash regions. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1567171 Fixed an issue where the provisioning process could fail when connecting to APs that advertise the maximum supported 32-byte SSID. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1564735 Fixed an issue where the Failed to allocate payload error code could appear during wifi-transceiver long-run test by using a static payload buffer for the transceiver TX. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1602504 Fixed the firmware_update example failure (error code 0x4) on NCP UART. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: NCP
  • Host interfaces: UART
1586172 Fixed an issue where Profile0 settings stored through sl_net_set_profile() could be overridden by sl_net_defaults.h. Also fixed NVM3 initialization ordering for Wi-Fi client and AP configurations when SLI_NVM3_CONFIG_MANAGER is enabled. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1612179 Fixed an issue where DTIM-based wake-up behavior in standby power save applications did not operate as expected. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1615241 Fixed an issue where Storeconfig_autojoin could fail to reconnect when the access point (AP) forcibly disconnected the client. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1626517 Fixed an issue where Wi-Fi AP provisioning could cause the scan API to fail with error 21. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1630203 Fixed an issue where continuous HTTPS downloads could fail on the first iteration. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1632232 Fixed an issue where the firmware update application could stop responding on NCP UART because of multiple UART deinitialization calls. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: NCP
  • Host interfaces: UART
1632628 Fixed the broken sl_net_credentials.c references in Keil µVision project files for the Monolithic build profile. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1625070 Fixed an issue that could cause transceiver data transmission to fail with error Sending data packet failed with error: 0x19 None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1639361 Fixed the sl_wifi_send_raw_data_frame() function so that it returns SL_STATUS_OK on success instead of SL_STATUS_IN_PROGRESS. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1659795 Fixed an issue where the DUT was unable to scan APs with a 1500-byte beacon frame size. None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1632896, 1583086 Fixed an issue where Wi-Fi power save mode did not resume after the access point beacon interval changed (for example, TP-Link AP). None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART

Chip Enablement#

Added in 4.1.1#

None

Added in 4.1.0#

  • SoC: BRD4343C (SiW917Y-RB4343C) radio board for refreshed SiWG917Y SoC modules with external 32 kHz LP crystal pins; module OPNs SiWN917Y100LGAXA, SiWN917Y100LGNXA, SiWG917Y110LGNXA, SiWG917Y111MGNXA, SiWG917Y121MGNXA, SiWG917Y110LGAXA, SiWG917Y111MGAXA, SiWG917Y121MGAXA

  • NCP: BRD4357C (SiW917Y-RB4357C) radio board for refreshed SiWN917Y NCP modules with external 32 kHz LP crystal pins; module OPNs SiWN917Y100LGAXA, SiWN917Y100LGNXA.

Application Example Changes#

New Examples | Modified Examples | Removed Examples | Deprecated Examples

Note: See the Feature Matrix section for a list of all hardware parts that work with the WiSeConnect SDK.

New Examples#

Added in 4.1.1#

None

Added in 4.1.0#

None

Modified Examples#

Modified in 4.1.1#

None

Modified in 4.1.0#

Example Name Changes Supported Software Variants (if applicable) Supported Modes Supported OPNs / Boards / OPN Combinations Supported Host Interfaces
  • Wi-Fi - TWT Use-Case Demo
  • Remote App
  • TCP TX on Periodic Wakeup

See README

 Migrated to sl_wifi_target_wake_time_auto_selection_v2. Standard and Lite
  • SoC
  • NCP
  • OPNs: All
  • Boards: All
 SPI, UART
  • Wi-Fi - Access Point
  • Concurrent Modes
  • Multithreading Application

See README

 Migrated to the new multicast / broadcast filter APIs (sl_wifi_set_groupcast_filter_config and sl_wifi_allowlist_mcast_add_ip/_remove_ip/_remove_all) and use sl_wifi_set_beacon_drop_threshold. Standard and Lite
  • SoC
  • NCP
  • OPNs: All
  • Boards: All
 SPI, UART
  • Wi-Fi - Cloud Apps
  • Provisioning
  • Three SSL Concurrent Client Sockets

See README

 Aligned with the new HTTP/MQTT/WebSocket TLS / TCP advanced-configuration APIs. Standard and Lite
  • SoC
  • NCP
  • OPNs: All
  • Boards: All
 SPI, UART
  • Wi-Fi - Enterprise Client
  • Provisioning
  • Wi-Fi Roaming

See README

 Integrated the WPA3 H2E SE APIs. Standard and Lite
  • SoC
  • NCP
  • OPNs: All
  • Boards: All
 SPI, UART

Wi-Fi - WLAN Throughput v6

See README

 Migrated to sl_net APIs and received TLS 1.3 support. Standard and Lite
  • SoC
  • NCP
  • OPNs: All
  • Boards: All
 SPI, UART

Wi-Fi - Dual Network Stack NWP + M4

See README

 Dual-stack (IPv4 + IPv6) example refreshed. UDP IPv6 transfer and dual-stack errors under LWIP_IPV4=0 / LWIP_SOCKET=0 are fixed. Standard and Lite
  • SoC
  • NCP
  • OPNs: All
  • Boards: All
 SPI, UART
  • Wi-Fi - SNTP
  • HTTP OTAF
  • HTTP OTAF TWT
  • M4 Firmware Update
  • Bootloader XModem

See README

 Migrated to sl_net_dns_resolve_hostname_v2 (timeout/retry) and received various firmware-update flow fixes. Standard and Lite
  • SoC
  • NCP
  • OPNs: All
  • Boards: All
 SPI, UART
  • Wi-Fi - Data Transfer
  • TLS/DTLS Client
  • Multithread Sockets
  • Select App
  • Concurrent HTTP Server

See README

 Updated for socket lifecycle / per-socket close and TCP server bind/cleanup fixes. Standard and Lite
  • SoC
  • NCP
  • OPNs: All
  • Boards: All
 SPI, UART
  • Wi-Fi - AT Commands
  • Wireless Test

See README

 Updated with new command-parser plumbing, multicast/broadcast filter command updates, and new test-agent BLE/socket commands. Standard and Lite
  • SoC
  • NCP
  • OPNs: All
  • Boards: All
 SPI, UART

Wi-Fi - WPS Push Button

See README

 Updated to fetch and connect using additional WPS credential profiles via sl_wifi_wps_get_remaining_credentials() when remaining_credentials_count is non-zero. Standard and Lite
  • SoC
  • NCP
  • OPNs: All
  • Boards: All
 SPI, UART

Removed Examples#

Removed in 4.1.1#

None

Removed in 4.1.0#

None

Deprecated Examples#

Deprecated in 4.1.1#

None

Deprecated in 4.1.0#

None

Known Issues and Limitations#

Note: See the Feature Matrix section for a list of all hardware parts that work with the WiSeConnect SDK.

Added in 4.1.1#

ID Issue or Limitation Description GitHub / Salesforce Reference (if any) Workaround (if any) Affected Software Variants, OPNs, Boards, Modes, Host Interfaces
1752772 The device may fail to connect to an AP when the AP is configured with any AKM supported by the station, and the connection attempt fails with timeout error. None None
  • Software variants: Standard and Lite
  • OPNs: All applicable OPNs
  • Boards: All applicable boards
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART

Added in 4.1.0#

ID Issue or Limitation Description GitHub / Salesforce Reference (if any) Workaround (if any) Affected Software Variants, OPNs, Boards, Modes, Host Interfaces
1619043 PTA is not supported when TA Power Save and M4 Power Save are enabled simultaneously. Enabling PTA in this configuration may cause the Wi-Fi subsystem to become unresponsive after wakeup. As a workaround, disable PTA or one of the power-save modes. Support for this configuration will be added in a future release. None None
  • Software variants: Standard and Lite
  • OPNs: All applicable OPNs
  • Boards: All applicable boards
  • Modes: SoC, NCP
NA During mutual authentication in EAP‑TLS, the client transmits both the leaf and intermediate certificates to the server only when using combined certificate chain loading. Intermediate certificate support is not available for individual certificate loading. None None
  • Software variants: Standard and Lite
  • OPNs: All applicable OPNs
  • Boards: All applicable boards
  • Modes: SoC, NCP
1607773 Extended Scan can incorrectly report AP security as WPA2 when the AP is actually configured as WPA/WPA2 Mixed. None None
  • Software variants: Standard and Lite
  • OPNs: All applicable OPNs
  • Boards: All applicable boards
  • Modes: SoC, NCP
1451898 Added validation for SSID, PSK, and PMK lengths in credential and profile management functions to prevent invalid credentials from being set without error. None None
  • Software variants: Standard and Lite
  • OPNs: All except IC OPNs
  • Boards: All applicable boards
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1494454 APUT sends deauthentication frames with an unspecified reason to a few stations when 8 stations are connected to it in a congested environment. None None
  • Software variants: Standard only
  • OPNs: All except SIWG917M110LGTBA (Lite OPN)
  • Boards: All applicable boards
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1458372 MCS rates drop in between data transfers causing a reduction in SSL RX throughput. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
N/A Command Engine stack overflow can occur if local variables are used in user callback. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC
  • Host interfaces: N/A
N/A When scanning with low-power mode is enabled, a WLAN sensitivity degradation of 3-6 dB is observed, which might prevent access points at longer ranges from appearing in the scan results. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC
  • Host interfaces: N/A
1199044 Connection issues may be seen with configuring certificate key and programming 4096 bit key and SHA384 / SHA512 certificates in station mode with WPA2 enterprise security. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
N/A Less throughput observed in DL-OFDMA with some access points that enabled low-density parity check coding. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC
  • Host interfaces: N/A
1357685 Extended scan results are not supported with MBSSID feature enabled. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1350997 Advance Scan is not supported in AP mode. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1454142 The beacon reception region is elongated before the PS Poll is sent, leading to increased current consumption, under -85 dB RSSI and 70% congestion. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1439592 SiWx917 power save does not work in station mode when M4 retention is disabled and network processor (NWP) memory is configured at 416 KB or 480 KB. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1443112 CSA with power save enabled may cause the SiWx917 device to re-join the access point. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1218972 When the sl_wifi_enable_target_wake_time API is used, occasional MQTT disconnections may be observed if TWT is configured with longer TWT intervals (>30 seconds) with embedded MQTT + TWT. None Use the sl_wifi_target_wake_time_auto_selection API where these dependencies are internally handled.
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1569122 Repeatedly adding and removing two vendor-specific information elements exceeding 40 bytes in length fails. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1569067 Overriding a vendor-specific IE using a duplicate unique ID in Concurrent Mode causes WLAN connection failure. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1568732 Vendor-specific IEs are unsupported in BGSCAN probe request frames. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1568490 Malformed packets are observed when validating vendor-specific information elements in beacons, probe responses, and association responses. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1557787 Under network congestion, enabling both NAT and PAT features in Concurrent Mode sometimes causes DHCP failures. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC
  • Host interfaces: SPI, UART
1569583 IPv6 functionality fails in lwip_mqtt_over_tcp application: Global Address and Gateway Address return invalid IPv6 addresses (::), causing MQTT over TCP to fail with error code -1. Link Local Address is correctly assigned, but Global Address remains invalid. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1569213 AT command at+cal-start fails with error code 4 in at_commands application on SoC with encryption enabled. M4 power save functionality continues to operate correctly despite the command failure. None None
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1517324 Fixed sl_wifi_set_performance_profile() API to prevent data corruption by replacing memcpy between incompatible structures with explicit assignment of listen_interval, monitor_interval, twt_request, and twt_selection fields. Users should migrate to sl_wifi_set_performance_profile_v2() for improved safety and handling. None None
  • Firmware variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1574418

Using slc generate --toolchain gcc or slc generate --with toolchain_gcc may fail with exclusivity errors due to the wiseconnect_toolchain_gcc_standard component incorrectly providing toolchain_gcc, resulting in a conflict with the Simplicity SDK toolchain_gcc component. If using those two command line options results in exclusivity errors, then you can remove them.

Note: In a future WiseConnect release, you might need to reintroduce the toolchain option on the command line. Refer to future WiseConnect release notes for updates on possible behavior changes.

 None None
  • Software variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1639377 WPA3 Transition security mode is not supported in AP mode. None None
  • Software variants: Standard
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1627990 Observed an IoP issue where some APs deauthenticate the DUT in STA mode while operating in Standby Associated Power Save mode. None None
  • Software variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1659585 TCP keep-alive socket termination was observed during long idle periods with power save enabled on certain APs. None None
  • Software variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1653478 DUT stuck/hang in wifi-transceiver init loop overnight. None None
  • Software variants: Standard
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1668910 During long-running Wi-Fi init/deinit cycles (connect, power save, data transfer, disconnect, and deinit in a loop), the device may fail to start the Wi-Fi client interface after several hours of operation. This can appear when the same cycle runs continuously with a short pause between iterations. None If this occurs, reset the device and avoid very long or tight Wi-Fi init/deinit loops until a fix is available.
  • Software variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1678051 In some SDK examples, debug logs from multiple threads may overlap and be hard to read because the sl_print_log_v2 logger does not serialize output across threads. The same logger also does not support floating-point formats (%f), so throughput and other decimal values may not print correctly. None None
  • Software variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART
1672053 Running slc validate on the WiseConnect SDK may report validation warnings, including unsatisfactory component conditionals, board configuration header annotation issues, and example board/part compatibility mismatches. Some warnings appear when validating individual Wi-Fi packages because shared components are split across multiple SDK packages. These are SDK metadata and packaging issues and do not typically block building and running applications in Simplicity Studio. None None
  • Software variants: Standard and Lite
  • OPNs: All
  • Boards: All
  • Modes: SoC, NCP
  • Host interfaces: SPI, UART