We are pleased to announce the mbed OS 5.5.2 release is now available. This release includes new target support for DISCO_F413ZH and VBLUno51 and an update for the STM32F7 cube from v1.6.0 to v1.7.0. It also includes SHA256 and SHA1 hw acceleration support for NUCLEO_F439ZI, USB Device for DISCO_L072CZ_LRWAN1, plus a number of fixes to mbed OS and tools to improve stability and functionality.

Here is a full list of all changes and fixes in this release...

Ports for Upcoming Targets

• 4410: DISCO_F413ZH: Add new platform
• 4629: Add support for VBLUno51 board

Known Issues

Due to a dependency of stm32f413 on a later patch version of IAR which is currently not available in our CI systems, IAR export support for this platform is not available for this release.

• 4697: IAR: remove stm32f413 from definitions

Fixes and Changes

• 4578: Turn off "browse information" in Uvision template
• 4616: Fix unresolved include of mbed_config.h in Eclipse
• 4375: Stm32 spi : use LL API to improve performances
• 4401: STM32 : Add USB used pins in PinNames.h files
• 4520: Update link in CONTRIBUTING.md
• 4103: Add extra_targets.json support to build tools
• 4390: Nucleo-F070RB It doesn't work when use internal clock
• 4405: DISCO_L072CZ_LRWAN1: PC_13 definition missing in PinNames.h fix
• 4426: Improve directory scanning performance
• 4538: Avoid lock collision b/w SerialBase & UARTSerial
• 4552: NUCLEO_F767ZI: Add missing IAR definitions
• 4557: Enable I2C and Analogin drivers for CM3DS_MPS2 target
• 4572: DISCO_L072CZ_LRWAN1: Add support of USB Device
• 4157: NUCLEO_F439ZI/mbedtls: add SHA1 hw_acceleration
• 4422: STM32F4 set HSE timeout value to 100ms
• 4594: Introduce mbed::NonCopyable traits
• 4598: Fix style issues in IAR exporter
• 4604: cmain IAR: add mbed main
• 4607: bd: Fix missing init in MBRBlockDevice
• 4603: STM32 : mbed_overrides.c is common for all families
• 4638: DISCO_L475VG_IOT01A: Fix startup files for cmsis5
• 4610: STM32 : targets.json file simplification
• 4647: Remove hardcode UART pins definitions for nRF52832 SoC
• 4646: RTX: Fixed RTXv5 mutex owner list handling.
• 4625: Update STM32F7 cube from v1.6.0 to v1.7.0
• 4421: STM32 : Clock source selection in json config file
• 4559: fatfs: Remove unused fat_filesystem_set_errno function
• 4571: events: Adopt osEventFlags from RTX 5
• 4577: XDOT_L151CC: enable HSI after waking from stop mode so ADC functions
• 4601: rtos: Fix MemoryPool and Queue destructor
• 4632: STM32: fix us ticker set event timestamp double ISR possibility
• 4641: Increase L0 ADC sample time
• 4656: Correct comments in flash api for STM32 L0 targets
• 4671: retarget: fix microlib for mbed 2
• 4529: Manage multiple instances of analog out
• 4565: Add FlashIAP support for REALTEK_RTL8195AM
• 4159: NUCLEO_F439ZI/mbedtls: add SHA256 hw_acceleration

Using the release

You can fetch the mbed OS 5.5.2 release from the mbed-os GitHub repository, using the tag "mbed-os-5.5.2". Please feel free to ask any questions or provide feedback on this release here, or to contact us at support@mbed.org.