MCUXpresso SDK Release Notes#

Development tools#

The MCUXpresso SDK was tested with following development tools. Same versions or above are recommended.

IAR Embedded Workbench for Arm, version is 9.70.4

MCUXpresso for VS Code v26.06
GCC Arm Embedded Toolchain 14.2.x

Supported development systems#

This release supports board and devices listed in following table. The board and devices in bold were tested in this release.

Development boards	MCU devices
EVK-MIMX8MN	MIMX8MN1CVPIZ, MIMX8MN1CVTIZ, MIMX8MN1DVPIZ, MIMX8MN1DVTJZ, MIMX8MN2CVTIZ, MIMX8MN2DVTJZ, MIMX8MN3CVPIZ, MIMX8MN3CVTIZ, MIMX8MN3DVPIZ, MIMX8MN3DVTJZ, MIMX8MN4CVTIZ, MIMX8MN4DVTJZ, MIMX8MN5CVPIZ, MIMX8MN5CVTIZ, MIMX8MN5DVPIZ, MIMX8MN5DVTJZ, MIMX8MN6CVTIZ, MIMX8MN6DVTJZ

MCUXpresso SDK release package#

The MCUXpresso SDK release package content is aligned with the silicon subfamily it supports. This includes the boards, CMSIS, devices, middleware, and RTOS support.

Device support#

The device folder contains the whole software enablement available for the specific System-on-Chip (SoC) subfamily. This folder includes clock-specific implementation, device register header files, device register feature header files, and the system configuration source files. Included with the standard SoC support are folders containing peripheral drivers, toolchain support, and a standard debug console. The device-specific header files provide a direct access to the microcontroller peripheral registers. The device header file provides an overall SoC memory mapped register definition. The folder also includes the feature header file for each peripheral on the microcontroller. The toolchain folder contains the startup code and linker files for each supported toolchain. The startup code efficiently transfers the code execution to the main() function.

Board support#

The boards folder provides the board-specific demo applications, driver examples, and middleware examples.

Demo application and other examples#

The demo applications demonstrate the usage of the peripheral drivers to achieve a system level solution. Each demo application contains a readme file that describes the operation of the demo and required setup steps. The driver examples demonstrate the capabilities of the peripheral drivers. Each example implements a common use case to help demonstrate the driver functionality.

RTOS#

FreeRTOS#

Real-time operating system for microcontrollers from Amazon

Middleware#

CMSIS DSP Library#

The MCUXpresso SDK is shipped with the standard CMSIS development pack, including the prebuilt libraries.

TinyCBOR#

Concise Binary Object Representation (CBOR) Library

PKCS#11#

The PKCS#11 standard specifies an application programming interface (API), called “Cryptoki,” for devices that hold cryptographic information and perform cryptographic functions. Cryptoki follows a simple object based approach, addressing the goals of technology independence (any kind of device) and resource sharing (multiple applications accessing multiple devices), presenting to applications a common, logical view of the device called a “cryptographic token”.

Multicore#

Multicore Software Development Kit

llhttp#

HTTP parser llhttp

FreeMASTER#

FreeMASTER communication driver for 32-bit platforms.

Release contents#

Provides an overview of the MCUXpresso SDK release package contents and locations.

Deliverable	Location
Boards	INSTALL_DIR/boards
Demo Applications	INSTALL_DIR/boards/<board_name>/demo_apps
Driver Examples	INSTALL_DIR/boards/<board_name>/driver_examples
eIQ examples	INSTALL_DIR/boards/<board_name>/eiq_examples
Board Project Template for MCUXpresso IDE NPW	INSTALL_DIR/boards/<board_name>/project_template
Driver, SoC header files, extension header files and feature header files, utilities	INSTALL_DIR/devices/<device_name>
CMSIS drivers	INSTALL_DIR/devices/<device_name>/cmsis_drivers
Peripheral drivers	INSTALL_DIR/devices/<device_name>/drivers
Toolchain linker files and startup code	INSTALL_DIR/devices/<device_name>/<toolchain_name>
Utilities such as debug console	INSTALL_DIR/devices/<device_name>/utilities
Device Project Template for MCUXpresso IDE NPW	INSTALL_DIR/devices/<device_name>/project_template
CMSIS Arm Cortex-M header files, DSP library source	INSTALL_DIR/CMSIS
Components and board device drivers	INSTALL_DIR/components
RTOS	INSTALL_DIR/rtos
Release Notes, Getting Started Document and other documents	INSTALL_DIR/docs
Tools such as shared cmake files	INSTALL_DIR/tools
Middleware	INSTALL_DIR/middleware

Known issues#

This section lists the known issues, limitations, and/or workarounds.

Cannot add SDK components into FreeRTOS projects#

It is not possible to add any SDK components into FreeRTOS project using the MCUXpresso IDE New Project wizard.

The freertos_lpuart example does not complete successfully#

The example hangs after console output ‘FreeRTOS LPUART driver example’.

Examples: freertos_lpuart

Affected toolchains: All

The example does not perform as expected (Ticks do not printed on the console or the application does not wake up from the sleep mode).

Examples: freertos_tickless