What's new in Keil MDK-ARM 5.37

µVision
- Added: support for Arm Cortex-M85 processor.
- Added: support for Arm China STAR-MC1 processor.
- Enhanced: UV4.exe [-n|-np] updates device names for multi-project workspaces (.uvmpw).
- Enhanced: reserved identifier warnings suppressed for Arm Compiler 6.17 and later ("-Wno-reserved-identifier")
- Enhanced: only save coverage information for executed code addresses to reduce COVERAGE SAVE output file size.
- Corrected: Call-Stack + Locals dialog shows incomplete information if in active interrupt service routine.
- Corrected: issue with displaying C++ std::string objects for Arm Compiler 6.16 and later in Watch Window.
Arm Compiler
- Arm Compiler 6 version 6.18 - see Release Notes for further details. Known issue: Significant performance degradation due to continuous Microsoft Defender Antivirus scans (refer to this Knowledgebase Article).
Software Packs included
- Keil - MDK-Middleware 7.15.0 All libraries have been built using Arm Compiler 6.
* Network Component Version 7.17.0
* FileSystem Component Version 6.15.0
* USB Component Version 6.16.0
- Keil - MDK-Middleware Graphics 1.1.0. All libraries have been built using Arm Compiler 6. Updated to Segger emWin Version 6.24.
- Arm - CMSIS 5.9.0
- Arm - CMSIS-Driver 2.7.1
- Keil - Arm Compiler 1.7.2
CMSIS-Toolbox
- Added: CMSIS-Toolbox Version 0.10.0 including compiler configuration file for Arm Compiler 6.18 located in the c:\Keil_v5\ARM\ctools directory.
- Follow the setup instructions for Windows to use the compiler and packs from MDK also with the commandline tools from cmsis-toolbox.
- uVision supports the import/export of the 'cprj' project description format specified by the Open-CMSIS-Pack project.
Cortex-M models
- Arm Virtual Hardware (AVH) models Version 11.17.40 are replacing the FVP models. The models are fully compatible and add these virtual interfaces:
* Virtual Input/Output (VIO) for controlling simple I/O such as LED and switches.
* Virtual Streaming Interface (VSI) for data streaming for audio, video and senors.
* Virtual Socket Interface (VSocket) for IP network connectivity via the host system.
- Existing projects require to update the model executable name in the Model Launch Configuration settings.
- Enhanced: these models can be invoked directly from the command line and do not mandate the use of uVision.
- Added: Corstone_SSE-300 (Cortex-M55) and Corstone_SSE-310 (Cortex-M85) platform models.
- Fixed Virtual Platform (FVP) models ARE NO LONGER INCLUDED in the MDK-Core installer.
- Version 11.17.21 of the models is available as Add-On installer from the MDK-ARM Version 5.37 Product Update area (valid PSN/LIC required).
Target debugging
Fast Models (CADI) - AVH/FVP:
* Added: debug and trace support for Arm Cortex-M85 based devices.
* Added: debug support for Armv8.1-M Pointer Authentication and Branch Target Identification (PACBTI) extensions.
ULINKpro updated debug drivers:
* Added: debug and trace support for Arm Cortex-M85 based devices.
* Added: debug support for Armv8.1-M Pointer Authentication and Branch Target Identification (PACBTI) extensions.
* Added: support for ADIv6 based debug in SDF files.
* Added: support ETMv4 conditional instruction trace for complete code coverage on Cortex-M7, Cortex-M33, Cortex-M35P, Cortex-M55, and Cortex-M85 based devices.
ULINKplus
* Added: debug and trace support for Arm Cortex-M85 based devices.
* Added: debug support for Armv8.1-M Pointer Authentication and Branch Target Identification (PACBTI) extensions.
* Added: support for ADIv6 based debug in SDF files.
ULINK2:
* Enhanced: support more than 16 FPB/BPU breakpoints in Cortex-M devices if provided by target device.
* Note: Use the CMSIS-DAP mode for debug and trace support for Arm Cortex-M85 based devices.
CMSIS-DAP:
* Added: debug and trace support for Arm Cortex-M85 based devices.
* Added: debug support for Armv8.1-M Pointer Authentication and Branch Target Identification (PACBTI) extensions.
* Added: support for ADIv6 based debug in SDF files.
- Segger J-Link: Updated debug driver to version 7.64.
- STMicroelectronics ST-LINK: Updated firmware upgrade utility ST-LinkUpgrade.exe to version 2.5.7.
- Nuvoton NU-Link: Updated debug driver to version 3.08.7313r.

MDK helps you to create embedded applications for ARM Cortex-M processor-based devices.MDK is a powerful, yet easy to learn and use development system. It consists of MDK-Core and software packs, which can be downloaded and installed based on the requirements of your application.
TheMDK Toolsinclude all the components that you need to create, build, and debug an embedded application for ARM based microcontroller devices. MDK-Core consists of the genuine Keil µVision IDE and debugger with leading support for Cortex-M processor-based microcontroller devices including the new ARMv8-M architecture. DS-MDK contains the Eclipse-based DS-5 IDE and debugger and offers multi-processor support for devices based on 32-bit Cortex-A processors or hybrid systems with 32-bit Cortex-A and Cortex-M processors. MDK includes two ARM C/C++ Compilers with assembler, linker, and highly optimize run-time libraries tailored for optimum code size and performance:
ARM Compiler version 5is the reference C/C++ compiler available with a TÜV certified qualification kit for safety applications, as well as long-term support and maintenance.
ARM Compiler version 6is based on the innovative LLVM technology and supports the latest C language standards including C++11 and C++14. It offers the smallest size and highest performance for Cortex-M targets.
Software packscontain device support, CMSIS libraries, middleware, board support, code templates, and example projects. They may be added any time to MDK-Core or DS-MDK, making new device support and middleware updates independent from the toolchain. The IDE manages the provided software components that are available for the application as building blocks.
Keil MDK - Getting started. Tutorial
You will learn how easy it is to get started with MDK Version 5 to efficiently develop embedded applications for microcontrollers based on ARM Cortex-M processors series.
Keil was founded in 1985 to market add-on productsfor the development tools provided by many of the silicon vendors. It soon became evident that there was a void in the marketplace that must be filled by quality software development tools. It was then that Keil implemented the first C compiler designed from the ground-up specifically for the 8051 microcontroller.
In October 2005, Keil (Keil Elektronik GmbH in Munich, Germany, and Keil Software, Inc. in Richardson, Texas) was acquired by ARM.
The Keil products from ARM include C/C++ compilers, debuggers, integrated development and simulation environments, RTOS and middleware libraries, and evaluation boards for ARM, Cortex-M, Cortex-R4, 8051, C166, and 251 processor families. Since the acquisition, ARM has continued the development and support of Keil products for existing 8051, 251, and C166 markets.