.. _changelog_v3_5_0_beta_2:

v3.5.0-beta.2
=============

v3.5.0-beta.2 updates the H7 HAL, adds the revision ID to ``machine.info()``,
supports 32-bit SDRAM, and fixes BMP / 24-bit RGB image reading and a Lepton
VGA/RGB565 hardfault. It introduces **no breaking API changes** —
v3.5.0-beta.1 scripts run unchanged. (This is a beta leading up to
:ref:`v3.5.0 <changelog_v3_5_0>`.)

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

Highlights
----------

- ``machine.info()`` now reports the silicon revision ID.
- **32-bit SDRAM** support.
- **Fixes** — BMP / 24-bit RGB image reading and a Lepton VGA/RGB565
  hardfault.
- **No breaking API changes** — reflash and your v3.5.0-beta.1 scripts run
  unchanged.

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

- ``machine.info()`` now includes the silicon revision ID.
- Added 32-bit SDRAM support and an ``fb_alloc`` hint system with smart
  overlay logic.

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

- Updated the H7 HAL (and CMSIS, legacy header, DCMI multi-buffer DMA, strict
  aliasing), the H7 PLLs / SDRAM clock, ADC examples, and moved the Arduino
  examples into a new directory.

Bug fixes
---------

Imaging:

- Fixed BMP file reading for all formats, reading 24-bit RGB images, a
  hardfault when setting the Lepton to VGA/RGB565, and returning when
  ``HAL_JPEG_Encode`` is aborted.

System:

- Fixed the timer 5 period, the H7 SD clock, missing bank enables, and raised
  the self-test VREF threshold.

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

v3.5.0-beta.2 introduces **no breaking Python API changes**. Scripts that ran
on v3.5.0-beta.1 run unchanged on v3.5.0-beta.2 — just reflash the firmware.