.. _changelog_v2_3_0:

v2.3.0
======

v2.3.0 adds **ZBar barcode decoding**, a new **Bayer / RAW pixel format**
(2 BPP, enabling VGA Bayer capture), image streaming, **WINC WiFi AP mode**,
separable-convolution acceleration, and MAVLink / Pixy-emulation example
scripts. It introduces **no breaking API changes** — v2.2.0 scripts run
unchanged.

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

Highlights
----------

- **ZBar barcodes** — barcode decoding integrated.
- **Bayer / RAW pixel format** — new 2 BPP format enabling VGA Bayer capture.
- **Image streaming** added.
- **WINC AP mode** — the WINC1500 WiFi can act as an access point.
- **Separable convolution** — faster Gaussian / convolution kernels.
- **No breaking API changes** — reflash and your v2.2.0 scripts run
  unchanged.

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

- **ZBar** — integrated the ZBar barcode decoder for barcode detection.
- **Bayer / RAW** — added a new RAW/Bayer pixel format (2 BPP, VGA-capable),
  Bayer sensor support in the OV7725 driver, Bayer JPEG support, an
  ``IM_GET_RAW_PIXEL`` accessor, and Bayer write support in the image buffer
  protocol.
- **Image streaming** — added image-streaming support.
- **WINC AP mode** — added WINC1500 access-point mode with an MJPEG AP-mode
  example.
- **Examples** — added MAVLink scripts for quadcopters and Pixy-emulation
  scripts.

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

- Added separable convolution and separable Gaussian kernels (used in ORB and
  the Gaussian filter) for faster filtering; used faster SPI GPIO.

Bug fixes
---------

- Fixed the AprilTag z-translation value (re-check code that consumed AprilTag
  z-translation), the UART receiving code, the ``py_image`` assertion message
  and framebuffer size checks, and a logical-test error in ZBar.

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

- **Bayer / RAW** sensor pixel format (OV7725).
- **WINC1500** — access-point (AP) mode.

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

v2.3.0 introduces **no breaking Python API changes**. Scripts that ran on
v2.2.0 run unchanged on v2.3.0 — just reflash the firmware. (Note: the
AprilTag z-translation value was corrected; re-validate code that depended on
the previous, incorrect value.)