.. _changelog_v4_6_20:

v4.6.20
=======

v4.6.20 is a small maintenance release on top of v4.6.0 — additional camera
sensor IDs, a new GenX320 per-bias ioctl, and a drawing-allocation fix. It
also removes the host-side desktop RPC library (see the breaking change
below).

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

Highlights
----------

- **More sensors recognized** — BOSON, HM0360, GenX320, and PAG7936 IDs were
  added.
- **GenX320 per-bias control** — a new ioctl to set individual sensor biases.
- **Breaking:** the host-side desktop RPC library was removed (see
  :ref:`the desktop RPC removal <v4_6_20_rpc>`).

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

- **Camera sensor IDs** — added the missing BOSON, HM0360, GenX320, and
  PAG7936 sensor ID constants so those sensors are correctly identified.
- **GenX320 per-bias ioctl** — a new ioctl for setting individual GenX320
  event-sensor biases.

Bug fixes
---------

- Fixed the framebuffer-alloc aligned size in image drawing
  (``imlib/draw``), correcting a memory-allocation error in draw operations.

Hardware and board support
--------------------------

- **BOSON / HM0360 / GenX320 / PAG7936** — these sensors are now recognized by
  their IDs.

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

User-visible API breaks between v4.6.0 and v4.6.20.

The only breaking change is host-tooling and does not affect on-camera
MicroPython scripts.

.. _v4_6_20_rpc:

Desktop RPC library removed *(tooling)*
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The host-side desktop RPC library (``tools/rpc``) was removed — it did not
work well on non-real-time host systems and was awkward over USB-UART. Use the
debug-protocol scripts or the pyboard controller script to drive the camera
from a host instead. The on-camera :mod:`rpc` library is unaffected.

*Commit:* `0d4a78650 <https://github.com/openmv/openmv/commit/0d4a78650>`__

Migration checklist
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

On-camera scripts need no changes. If a host PC program imported the desktop
RPC library, port it to the debug-protocol scripts or the pyboard controller
script (:ref:`the desktop RPC removal <v4_6_20_rpc>`).