The CMSIS System View Description format (CMSIS-SVD) formalizes the description of the system contained in Arm Cortex-M processor-based micro controllers, in particular, the memory mapped registers of peripherals. The detail contained in system view descriptions is comparable to the data in device reference manuals. The information ranges from high level functional descriptions of a peripheral all the way down to the definition and purpose of an individual bit field in a memory mapped register.
* How Can the CMSIS-SVD Be Used
The generic description of each MCUs CPU and hardware registers is very valuable when generating code that can be used for talking to specific target hardware. In fact, much of the code in parts of CMSIS itself are generated based on the SVD. ARM distributes an executable that does this transformation (SVDConvert.exe).
The information is also used in FURS.
CMSIS-SVD Files:
- Are XML.
- Do not contain ARM specific information such as SYSTICK etc.
Where To Download SVD files ?
STM32 SVD files can be downloaded from several sources:
* STMicroelectronics Official Website: The primary source is the product page for a specific STM32 microcontroller on the ST website. Navigate to the "CAD Resources" section, where SVD files are typically available for download. For example, the STM32U575 and STM32U585 microcontrollers have their SVD files listed on their dedicated product page.
* GitHub Repositories: Several community-maintained GitHub repositories provide up-to-date collections of STM32 SVD files: The svcguy/stm32-svd repository uses automated workflows to download SVD files daily from ST's website, organizing them into a clean folder structure for easy access. i.e. https://github.com/posborne/cmsis-svd/archive/master.zip (39MB)
* The modm-io/cmsis-svd-stm32 repository hosts an archive of SVD files for all STM32 families, licensed under Apache-2.0. This repository is updated periodically by GitHub Actions.
* STM32CubeIDE: The SVD files are also included within the STM32CubeIDE software environment. For macOS users, the files can be found by right-clicking on the STM32CubeIDE.app and selecting "Show Package Contents" to navigate to the internal directory structure.
* Keil Software Packs: SVD files are provided within Keil's software packs (e.g., STM32F4xx_DFP). After installing or updating a pack, the SVD files can be located in the ARM\\PACK\\Keil\\STM32F4xx_DFP\\x.y.z\\CMSIS\\SVD directory.
* ARM's CMSIS-SVD Portal: Public access to SVD files for published devices is available through the ARM website (cmsis.arm.com or www.arm.com/cmsis) after logging in and accepting a silicon vendor-specific End Users License Agreement (EULA).