# Release Notes for STM32WBxx CMSIS

Copyright © 2019 STMicroelectronics

# License

This software component is licensed by ST under BSD 3-Clause license, the “License”; You may not use this component except in compliance with the License. You may obtain a copy of the License at:

https://opensource.org/licenses/BSD-3-Clause

# Purpose

This driver provides the CMSIS device for the stm32wbxx products. This covers

- STM32WB55xx devices
- STM32WB50xx devices

This driver is composed of the descriptions of the registers under “Include” directory.

Various template file are provided to easily build an application. They can be adapted to fit applications requirements.

- Templates/system_stm32wbxx.c contains the initialization code referred as SystemInit.
- Startup files are provided as example for IAR©, KEIL© and SW4STM32©.
- Linker files are provided as example for IAR©, KEIL© and SW4STM32©.

# Update History

V1.2.0 / 26-June-2019

## Main Changes

### Introduction of STM32WB50xx device

First release for STM32WBxx CMSIS introducing stm32wb50xx devices.

## Contents

CMSIS devices files for stm32wb55xx, stm32wb50xx devices.

## Development Toolchains and Compilers

- IAR Embedded Workbench for ARM (EWARM) toolchain V8.20.2
- RealView Microcontroller Development Kit (MDK-ARM) toolchain V5.25
- System Workbench STM32 (SW4STM32) toolchain V2.7

## Supported Devices and boards

- STM32WB55xx and STM32WB50xx devices

V1.1.0 / 05-April-2019

## Main Changes

### Maintenance release

Maintenance release for STM32WBxx devices (stm32wb55xx devices)

Fixed bugs list
Headline
Correct GCC linker file: Set available size of RAM1 to 192K - 4 instead of 191K.
Set FLASH_ACR_LATENCY_x as uint32_t (UL instead of U).

V1.0.0 / 06-February-2019

## Main Changes

### First release

Add support of STM32WB55xx.