MCUXpresso SDK Documentation

Version: 25.12.00 25.12.00-pvw2 25.12.00-pvw1 25.09.00 25.09.00-pvw2 latest

Open on Repo Open an Issue

Source (.md/.rst) Page PDF (.pdf)

IW611/IW612 release notes

Note: The IW611/IW612 support is enabled in i.MX RT1170 EVKB and i.MX RT1060 EVKC.

Package information

• SDK version: 25.12.00

Parent topic:IW611/IW612 release notes

Version information

• Wireless SoC: IW611/IW612

• Wi-Fi and Bluetooth/Bluetooth LE firmware version: 18.99.3.p27.10

  • 18 - Major revision

  • 99 - Feature pack

  • 3 - Release version

  • p27.10 - Patch number

Parent topic:IW611/IW612 release notes

Host platform

• i.MX RT1170 EVKB and i.MX RT1060 EVKC Platforms running FreeRTOS

• Host interfaces

  • Wi-Fi over SDIO (SDIO 2.0 support, SDIO clock frequency: 50 MHz)

  • Bluetooth/Bluetooth LE over UART

  • 802.15.4 over SPI (IW612 only)

• Test tools

  • iPerf (version 2.1.9)

Parent topic:IW611/IW612 release notes

Wi-Fi and Bluetooth certification

The Wi-Fi and Bluetooth certification is obtained with the following combinations.

WFA certifications

• STA | 802.11n

• STA | PMF

• STA | FFD

• STA | SVD

• STA | WPA3 SAE (R3)

• STA | 802.11ac

• STA | 802.11ax

• STA | QTT

Refer to 6.

Note: This release supports STAUT only certifications.

Parent topic:Wi-Fi and Bluetooth certification

Bluetooth controller certification

QDID: refer to 4.

Note: QDID upgrade to Bluetooth Core Specification Version 5.4 is in progress.

Parent topic:Wi-Fi and Bluetooth certification

Parent topic:IW611/IW612 release notes

Wi-Fi throughput

Throughput test setup

• Environment: Shield Room - Over the Air

• Access Point: Asus AX88u

• DUT: IW612 Murata (Module: 2EL M.2) with EVK-MIMXRT1060 EVKC platform

• DUT Power Source: External power supply

• Client: Apple MacBook Air

• Channel: 6 | 36

• Wi-Fi application: wifi_wpa_supplicant

• Compiler used to build application: armgcc

• Compiler Version gcc-arm-none-eabi-13.2

• iPerf commands used in test:

TCP TX

iperf -c <remote_ip> -t 60

TCP RX

iperf -s

UDP TX

iperf -c <remote_ip> -t 60 -u -B <local_ip> -b 120

Note: The default rate is 100 Mbps.

UDP RX

iperf -s -u -B <local_ip>

Note: Read more about the throughput test setup and topology in 2

The throughput numbers are captured with default configurations using wifi_wpa_supplicant sample application.

Parent topic:Wi-Fi throughput

iPerf host configuration and impact on throughput {#iperf_host_configuration_and_impact_on_throughput}

To get the highest throughput, the throughput values shown in STA throughput and Mobile AP throughput are measured with the maximum values of the default host configuration macros. STA and AP throughput captured with the minimum values of the host configuration macros shows the throughput numbers obtained when using the minimum values of the host configuration macros. The macro values are defined in lwipopts.h file.

The table below lists the minimum and maximum values of the host configuration macros.

Values of the host configuration macros

Parameter	Maximum value	Minimum value
TCPIP_MBOX_SIZE	96	32
DEFAULT_RAW_RECVMBOX_SIZE	32	12
DEFAULT_UDP_RECVMBOX_SIZE	64	12
DEFAULT_TCP_RECVMBOX_SIZE	64	12
TCP_MSS	1460	536
TCP_SND_BUF	24 * TCP_MSS	2 * TCP_MSS
MEM_SIZE	319160	41,080
TCP_WND	15 * TCP_MSS	10 * TCP_MSS
MEMP_NUM_PBUF	20	10
MEMP_NUM_TCP_SEG	96	12
MEMP_NUM_TCPIP_MSG_INPKT	80	16
MEMP_NUM_TCPIP_MSG_API	80	8
MEMP_NUM_NETBUF	32	16

STA and AP throughput captured with the minimum values of the host configuration macros {#sta_and_ap_throughput_captured_with_the_minimum_values_of_the_host_configuration_macros}

STA mode throughput - HE Mode | 5 GHz Band | 80 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	7	18	111	124
WPA2-AES	7	18	110	124
WPA3-SAE	6	18	110	124

Mobile AP mode throughput - HE Mode | 5 GHz Band | 80 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	2	19	93	127
WPA2-AES	2	19	105	126
WPA3-SAE	2	19	104	132

Parent topic:iPerf host configuration and impact on throughput

Parent topic:Wi-Fi throughput

STA throughput

External AP: Asus AX88u

STA mode throughput - BGN Mode | 2.4 GHz Band | 20 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	52	51	64	63
WPA2-AES	51	50	62	62
WPA3-SAE	51	50	63	61

STA mode throughput - BGN Mode | 2.4 GHz Band | 40 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	79	85	118	131
WPA2-AES	78	84	118	129
WPA3-SAE	78	83	118	130

STA mode throughput - AN Mode | 5 GHz Band | 20 MHz (HT)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	50	52	63	64
WPA2-AES	49	51	63	63
WPA3-SAE	49	51	63	63

STA mode throughput - AN Mode | 5 GHz Band | 40 MHz (HT)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	77	86	118	133
WPA2-AES	76	86	118	132
WPA3-SAE	79	86	118	132

STA mode throughput - VHT Mode | 2.4 GHz Band | 20 MHz (VHT)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	56	59	76	76
WPA2-AES	56	59	74	75
WPA3-SAE	56	59	76	75

STA mode throughput - VHT Mode | 2.4 GHz Band | 40 MHz (VHT)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
OpenSecurity	74	92	162	170
WPA2-AES	74	90	160	169
WPA3-SAE	71	91	161	171

STA mode throughput - VHT Mode | 5 GHz Band | 20 MHz (VHT)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
OpenSecurity	43	57	76	78
WPA2-AES	42	57	75	77
WPA3-SAE	43	57	75	77

STA mode throughput - VHT Mode | 5 GHz Band | 40 MHz (VHT)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	88	95	118	177
WPA2-AES	87	94	118	175
WPA3-SAE	91	94	118	175

STA mode throughput - VHT Mode | 5 GHz Band | 80 MHz (VHT)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	121	102	118	200
WPA2-AES	121	103	118	200
WPA3-SAE	121	103	118	200

STA mode throughput - HE Mode | 2.4 GHz Band | 20 MHz (HE)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	78	64	117	105
WPA2-AES	78	67	117	104
WPA3-SAE	79	65	117	97

STA mode throughput - HE Mode | 2.4 GHz Band | 40 MHz (HE)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	95	91	118	199
WPA2-AES	93	90	118	200
WPA3-SAE	91	87	118	199

STA mode throughput - HE Mode | 5 GHz Band | 20 MHz (HE)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	76	66	118	127
WPA2-AES	75	68	118	125
WPA3-SAE	75	68	118	126

STA mode throughput - HE Mode | 5 GHz Band | 40 MHz (HE)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	105	69	118	200
WPA2-AES	104	70	118	200
WPA3-SAE	104	70	118	200

STA mode throughput - HE Mode | 5 GHz Band | 80 MHz (HE)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	125	73	118	200
WPA2-AES	123	76	118	200
WPA3-SAE	123	76	118	200

Parent topic:Wi-Fi throughput

Mobile AP throughput

External client: Apple MacBook Air

Mobile AP mode throughput - BGN Mode | 2.4 GHz Band | 20 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	51	54	61	60
WPA2-AES	50	55	61	60
WPA3-SAE	51	54	61	60

Mobile AP mode throughput - BGN Mode | 2.4 GHz Band | 40 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	85	107	118	124
WPA2-AES	86	101	118	126
WPA3-SAE	84	102	118	126

Mobile AP mode throughput - AN Mode | 5 GHz Band | 20 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	51	43	63	60
WPA2-AES	50	43	62	60
WPA3-SAE	50	43	63	60

Mobile AP mode throughput - AN Mode | 5 GHz Band | 40 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	89	115	118	128
WPA2-AES	88	110	118	128
WPA3-SAE	88	115	118	128

Mobile AP mode throughput - VHT Mode | 5 GHz Band | 20 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	58	66	76	72
WPA2-AES	58	65	75	72
WPA3-SAE	58	65	75	72

Mobile AP mode throughput - VHT Mode | 5 GHz Band | 40 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	103	141	135	168
WPA2-AES	102	134	137	167
WPA3-SAE	102	134	139	167

Mobile AP mode throughput - VHT Mode | 5 GHz Band | 80 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	137	180	182	218
WPA2-AES	130	174	181	218
WPA3-SAE	136	175	182	218

Mobile AP mode throughput - HE Mode | 2.4 GHz Band | 20 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	53	66	85	120
WPA2-AES	52	65	83	116
WPA3-SAE	52	65	83	118

Mobile AP mode throughput - HE Mode | 2.4 GHz Band | 40 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	86	100	133	132
WPA2-AES	83	100	135	134
WPA3-SAE	86	100	136	134

Mobile AP mode throughput - HE Mode | 5 GHz Band | 20 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	54	65	82	83
WPA2-AES	58	65	82	82
WPA3-SAE	58	65	81	81

Mobile AP mode throughput - HE Mode | 5 GHz Band | 40 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	104	141	151	170
WPA2-AES	102	137	151	170
WPA3-SAE	103	136	150	170

Mobile AP mode throughput - HE Mode | 5 GHz Band | 80 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open security	138	180	189	219
WPA2-AES	135	175	190	218
WPA3-SAE	135	175	192	218

Parent topic:Wi-Fi throughput

Parent topic:IW611/IW612 release notes

EU conformance tests

• EU Adaptivity test - EN 300 328 v2.1.1 (for 2.4 GHz)

• EU Adaptivity test - EN 301 893 v2.1.1 (for 5 GHz)

Parent topic:IW611/IW612 release notes

Bug fixes and/or feature enhancements

Firmware version: 18.99.2.p7.19

Component	Description
-	NA

Parent topic:Bug fixes and/or feature enhancements

Firmware version: 18.99.2.p7.19 to 18.99.2.p49.9

Component	Description
-	NA

Parent topic:Bug fixes and/or feature enhancements

Firmware version: 18.99.2.p49.9 to 18.99.2.p155

Component	Description
Bluetooth	Audio lost occurs due to periodic adv sync lost, during 2 BIS 44.1kHz unencrypted streams with 1M PHY configuration. BIS sync loss may occur in long audio streaming sessions.

Parent topic:Bug fixes and/or feature enhancements

Firmware version: 18.99.2.p155 to 18.99.2.p66.30

Component	Description
Wi-Fi	802.11R Fast BSS roaming works only with hostapd and does not work with standard APs (supporting 11R)
Bluetooth	DUT is not able to sustain a connection with the remote device that does extended advertisement with coded PHY configuration. When 2 CIS streams are active, after the first device disconnects followed by the second device disconnecting, the second peripheral device hangs. Audio Play/Pause does not work in BIS case.

Parent topic:Bug fixes and/or feature enhancements

Firmware version: 18.99.2.p66.30 to 18.99.3.p10.5

Component	Description
Wi-Fi	STAUT not sending Neighbor Advertisement packet after receiving Neighbor Solicitation packet from Ex-AP. Antenna selection time exceeds configured evaluation time
Bluetooth	When DUT works as CIS source and CIS Offset is 612us, high packet drops observed which affects the audio streaming. For BIS Source Use Cases, Periodic Interval and ISO Interval should be multiple of each other value. In 1-CIS and 2-CIS, Continuous Audio Glitches are observed with 96 kbps bit rate.

Parent topic:Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p10.5 to 18.99.3.p17.9

Component	Description
Wi-Fi	After performing independent reset (out-of-band mode), the STAUT fails to connect to the external AP via wlan-connect command, observed command timeout 0x107 error.
Bluetooth	Audio glitches observed with Google Pixel 7 Pro streaming audio after CIS is established with DUT. During Call Gateway (CG) / Call Terminal (CT) Use Case, the firmware periodically sends NULL PDU, which results in frequent Audio Glitch on both CG and CT sides. Heavy audio glitches observed with CIS SRC Google Pixel 7 Pro Continuous audio glitches observed in 1 CIS and 2 CIS for 48_3 and 48_4 config.

Parent topic:Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p17.9 to 18.99.3.p21.154

Component	Description
Wi-Fi	STAUT fail to ping AP backend machine when connected with DFS channel and DUTSTA went in bad state.
Bluetooth	CIS Sink frequently fails to acknowledge CIS Source TX PDU.

Parent topic:Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p21.154 to 18.99.3.p23.16

Component	Description
-	NA

Parent topic:Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p23.16 to 18.99.3.p25.11

Component	Description
Bluetooth	Packet lost observed in CIS case, which causes audio noise.

Parent topic:Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p25.11 to 18.99.3.p26.10

Component	Description
Wi-Fi	During legacy roaming when the “Link Lost” observed the DUTSTA fails to roam
Wi-Fi	During the automated testing of the channel performance, a system hang can occur, with the error message “.sdio_drv_write failed”.

Parent topic:Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p26.10 to 18.99.3.p27.1

Component	Description
Wi-Fi	Enabled mbedtls 3.x

Parent topic:Bug fixes and/or feature enhancements

Parent topic:IW611/IW612 release notes

Known issues

Component

Description

Bluetooth

Sequential Removal of CIS Handles as per current Controller implementation i.e CIS Disconnection sequence should be in sequence => CIS - 4,3,2,1 While 4-CIS streaming, audio glitches observed on all CIS SINK with Samsung Galaxy buds While 4-CIS streaming, disconnection with connection timeout observed on first CIS SINK with Samsung Galaxy buds Only two streams (CIS/BIS) with one channel is supported.

Parent topic:IW611/IW612 release notes