mbed-os-5.5.1

We are pleased to announce the mbed OS 5.5.1 release is now available. This release includes a fix for a critical issue found in mbed-os-5.5.0: 4584 Introduction of RTX/CMSIS 5 has broken semaphore signaling. We have fixed the issue by reverting behavior to how it was in RTX/CMSIS 4.

The release also includes support for CM3DS_MPS2 and DISCO_L475VG_IOT01A targets, an update to the u-blox ODIN-W2 driver binaries and bug fixes that improve the stability of the tools and codebase.

Known issues

The following list of known issues applies to this release:

4605: Timing tests are unstable on the ARM_BEETLE_SOC

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

Ports for upcoming targets

4414: Enable CM3DS_MPS2 target

4242: DISCO_L475VG_IOT01A: Add new target

Fixes and changes

4545: Filter support with a white list of post-bin hooks in uvision

4544: Export static files from mbed export

4542: Issue #4528 K82F: Initialize the UART clock inside the board file

4530: Enable verbose builds when running example build tests

4516: Check for correct library naming in Travis CI

4510: u-blox: Rearrange ODIN target

4502: STM32: serial: Clear Overrun flag if it is set when checking if readable

4562: fatfs: Fix initialization of block device in mount/unmount functions

4504: Add reporting of reserved heap in Greentea

4554: Fix NUCLEO_L476RG linker scripts

4563: Increase background stack size to fix overflow

4364: Add C API for Greentea client

4540: Support app config option for export

4541: Fix a bug in print_large_string

4579: Fix semaphore in RTOS

4444: Resolve lwIP init twice issue

4523: Check Ethernet before including lwipopts_conf.h

4337: Platform support for new CellularInterface in UBLOX_C027 and UBLOX_C030_U201

4567: Update u-blox ODIN-W2 driver binaries to 2.1 rc1

Using the release

You can fetch the mbed OS 5.5.1 release from the mbed-os GitHub repository by using the tag "mbed-os-5.5.1".

Please feel free to ask any questions or provide feedback on this release on the forum, or to contact us at [email protected].