.. _changelog_v3_5_2:

v3.5.2
======

v3.5.2 is a small fix release: timer fixes, a timer test script, DBGMCU
enabled in sleep modes, and an MQTT-over-SSL fix. It introduces **no breaking
API changes** — v3.5.1 scripts run unchanged.

.. contents:: On this page
   :local:
   :depth: 1

Highlights
----------

- **Timer fixes** plus a timer test script.
- **MQTT over SSL** — the MQTT module now works with SSL sockets.
- **No breaking API changes** — reflash and your v3.5.1 scripts run
  unchanged.

New features
------------

- Added a timer test script (using a non-reserved timer).

Other changes and improvements
------------------------------

- Enabled DBGMCU in sleep modes so debugging works while the device sleeps.

Bug fixes
---------

- Fixed :class:`pyb.Timer` issues and fixed the MQTT module to work with SSL
  sockets.

Breaking API changes
--------------------

v3.5.2 introduces **no breaking Python API changes**. Scripts that ran on
v3.5.1 run unchanged on v3.5.2 — just reflash the firmware.