luma.led_matrix 1.5.0
A library to drive a MAX7219 LED serializer (using SPI) and WS2812 NeoPixels (using DMA)
License: MIT
Keywords: raspberry pi

`luma.core <https://github.com/rm-hull/luma.core>`__ **|** 
`luma.docs <https://github.com/rm-hull/luma.docs>`__ **|** 
`luma.emulator <https://github.com/rm-hull/luma.emulator>`__ **|** 
`luma.examples <https://github.com/rm-hull/luma.examples>`__ **|** 
`luma.lcd <https://github.com/rm-hull/luma.lcd>`__ **|** 
luma.led_matrix **|** 
`luma.oled <https://github.com/rm-hull/luma.oled>`__ 

Luma.LED_Matrix 
===============
**Display drivers for MAX7219, WS2812, APA102**

.. image:: https://travis-ci.org/rm-hull/luma.led_matrix.svg?branch=master
   :target: https://travis-ci.org/rm-hull/luma.led_matrix

.. image:: https://coveralls.io/repos/github/rm-hull/luma.led_matrix/badge.svg?branch=master
   :target: https://coveralls.io/github/rm-hull/luma.led_matrix?branch=master

.. image:: https://readthedocs.org/projects/luma-led_matrix/badge/?version=latest
   :target: http://luma-led-matrix.readthedocs.io/en/latest/?badge=latest

.. image:: https://img.shields.io/pypi/pyversions/luma.led_matrix.svg
   :target: https://pypi.python.org/pypi/luma.led_matrix

.. image:: https://img.shields.io/pypi/v/luma.led_matrix.svg
   :target: https://pypi.python.org/pypi/luma.led_matrix

.. image:: https://img.shields.io/maintenance/yes/2020.svg?maxAge=2592000

Python 3 library interfacing LED matrix displays with the MAX7219 driver (using
SPI) and WS2812 & APA102 NeoPixels (inc Pimoroni Unicorn pHat/Hat and Unicorn
Hat HD) on the Raspberry Pi and other Linux-based single board computers - it
provides a `Pillow <https://pillow.readthedocs.io/>`_-compatible drawing canvas,
and other functionality to support:

* multiple cascaded devices
* LED matrix, seven-segment and NeoPixel variants
* scrolling/panning capability,
* terminal-style printing,
* state management,
* dithering to monochrome,
* pygame emulator,
* Python 2.7 and 3.5+ are both supported

Documentation
-------------
Full documentation with installation instructions and examples can be found on https://luma-led-matrix.readthedocs.io.

.. image:: https://raw.githubusercontent.com/rm-hull/luma.led_matrix/master/doc/images/devices.jpg
   :alt: max7219 matrix

A LED matrix can be acquired for a few pounds from outlets
like `Banggood <http://www.banggood.com/MAX7219-Dot-Matrix-Module-DIY-Kit-SCM-Control-Module-For-Arduino-p-72178.html?currency=GBP>`_.
Likewise 7-segment displays are available from `Ali-Express
<http://www.aliexpress.com/item/MAX7219-Red-Module-8-Digit-7-Segment-Digital-LED-Display-Tube-For-Arduino-MCU/1449630475.html>`_
or `Ebay <http://www.ebay.com/itm/-/172317726225>`_.

.. image:: https://raw.githubusercontent.com/rm-hull/luma.led_matrix/master/doc/images/IMG_2810.JPG
   :alt: max7219 sevensegment

.. image:: https://raw.githubusercontent.com/rm-hull/luma.led_matrix/master/doc/images/matrix_cascaded.jpg
   :alt: max7219 cascaded
 
.. image:: https://raw.githubusercontent.com/rm-hull/luma.led_matrix/master/doc/images/box_helloworld.jpg
   :alt: max7219 box
     
.. image:: https://raw.githubusercontent.com/rm-hull/luma.led_matrix/master/doc/images/emulator.gif
   :alt: max7219 emulator

Breaking changes
----------------
Version 0.3.0 was released on 19 January 2017: this came with a rename of the
github project from **max7219** to **luma.led_matrix** to reflect the changing
nature of the codebase.

There is no direct migration path, but the old `docs <https://max7219.readthedocs.io>`_
and `PyPi packages <https://pypi.python.org/pypi/max7219>`_ will remain
available indefinitely, but that deprecated codebase will no longer recieve 
updates or fixes.

The consequence is that any existing code that uses the old **max7219** package
should probably be updated. 

License
-------
The MIT License (MIT)

Copyright (c) 2013-2020 Richard Hull & Contributors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


Contributing
------------
Pull requests (code changes / documentation / typos / feature requests / setup)
are gladly accepted. If you are intending some large-scale changes, please get
in touch first to make sure we're on the same page: try and include a docstring
for any new methods, and try and keep method bodies small, readable and
PEP8-compliant.

GitHub
^^^^^^
The source code is available to clone at: http://github.com/rm-hull/luma.led_matrix

Contributors
^^^^^^^^^^^^
* Thijs Triemstra (@thijstriemstra)
* Jon Carlos (@webmonger)
* Unattributed (@wkapga)
* Taras (@tarasius)
* Brice Parent (@agripo)
* Thomas De Keulenaer (@twdkeule)
* Tero Korpela (@terokorp)
* Qinkang Huang (@pokebox)
* Shawn Woodford (@swoodford)
* Phil Howard (@gadgetoid)
* Petr Kracík (@petrkr)
* Emlyn Corrin (@emlyn)
* Bram Verboom (@bramverb)
* Thanassis Tsiodras (@ttsiodras)


ChangeLog
---------

+------------+------------------------------------------------------------------------+------------+
| Version    | Description                                                            | Date       |
+============+========================================================================+============+
| **1.5.0**  | * Drop support for Python 2.7, only 3.5 or newer is supported now      | 2020/07/04 |
+------------+------------------------------------------------------------------------+------------+
| **1.4.1**  | * Make ``contrast`` an optional constructor argument                   | 2019/12/08 |
+------------+------------------------------------------------------------------------+------------+
| **1.4.0**  | * Rework namespace handling for luma sub-projects                      | 2019/06/16 |
+------------+------------------------------------------------------------------------+------------+
| **1.3.1**  | * Fix alpha-channel blending for Unicorn Hat HD display                | 2019/05/26 |
+------------+------------------------------------------------------------------------+------------+
| **1.3.0**  | * Add support for Pimoroni's Unicorn Hat HD                            | 2019/05/26 |
+------------+------------------------------------------------------------------------+------------+
| **1.2.0**  | * Add option to control if 8x8 blocks are arranged in reverse order    | 2019/04/20 |
|            | * Add (approximations of) more characters for 7-segment displa         |            |
|            | * Documentation updates                                                |            |
+------------+------------------------------------------------------------------------+------------+
| **1.1.1**  | * Fix unicode warning                                                  | 2018/09/26 |
+------------+------------------------------------------------------------------------+------------+
| **1.1.0**  | * Add degree symbol to segment mapper charmap                          | 2018/09/18 |
+------------+------------------------------------------------------------------------+------------+
| **1.0.8**  | * Use DMA channel 10 (rather than ch. 5) for WS2812 NeoPixels          | 2018/01/23 |
+------------+------------------------------------------------------------------------+------------+
| **1.0.7**  | * Use ``extras_require`` in ``setup.py`` for ARM dependencies          | 2017/11/26 |
+------------+------------------------------------------------------------------------+------------+
| **1.0.6**  | * Version number available as ``luma.led_matrix.__version__`` now      | 2017/11/23 |
+------------+------------------------------------------------------------------------+------------+
| **1.0.5**  | * Conditionally install WS2812 packages if Linux/ARM7L only            | 2017/10/22 |
+------------+------------------------------------------------------------------------+------------+
| **1.0.4**  | * Make wheel universal                                                 | 2017/10/22 |
|            | * Minor documentation fixes                                            |            |
+------------+------------------------------------------------------------------------+------------+
| **1.0.3**  | * Explicitly state 'UTF-8' encoding in setup when reading files        | 2017/10/18 |
+------------+------------------------------------------------------------------------+------------+
| **1.0.2**  | * Setup fails due to programmer not understanding basic Python ...     | 2017/08/05 |
+------------+------------------------------------------------------------------------+------------+
| **1.0.1**  | * Setup on Python 3 fails due to hyphen in package name                | 2017/08/05 |
+------------+------------------------------------------------------------------------+------------+
| **1.0.0**  | * Stable release (remove all deprecated methods & parameters)          | 2017/07/30 |
+------------+------------------------------------------------------------------------+------------+
| **0.11.1** | * Add Python3 compatibility for neopixels/neosegments                  | 2017/07/29 |
+------------+------------------------------------------------------------------------+------------+
| **0.11.0** | * Alternative WS2812 low level implementation                          | 2017/07/21 |
|            | * Add support for @msurguy's modular NeoSegments                       |            |
+------------+------------------------------------------------------------------------+------------+
| **0.10.1** | * Add block_orientation=180 option                                     | 2017/05/01 |
+------------+------------------------------------------------------------------------+------------+
| **0.10.0** | * **BREAKING CHANGE:** Move sevensegment class to                      | 2017/04/22 |
|            |   ``luma.core.virtual`` package                                        |            |
+------------+------------------------------------------------------------------------+------------+
| **0.9.0**  | * Add support for APA102 RGB neopixels                                 | 2017/03/30 |
+------------+------------------------------------------------------------------------+------------+
| **0.8.0**  | * Change MAX7219's block_orientation to support ±90° angle correction  | 2017/03/19 |
|            | * Deprecate "vertical" and "horizontal" block_orientation              |            |
+------------+------------------------------------------------------------------------+------------+
| **0.7.0**  | * **BREAKING CHANGE:** Move sevensegment class to                      | 2017/03/04 |
|            |   ``luma.led_matrix.virtual`` package                                  |            |
|            | * Documentation updates & corrections                                  |            |
+------------+------------------------------------------------------------------------+------------+
| **0.6.2**  | * Allow MAX7219 and NeoPixel driver constructors to accept any args    | 2017/03/02 |
+------------+------------------------------------------------------------------------+------------+
| **0.6.1**  | * Restrict exported Python symbols from ``luma.led_matrix.device``     | 2017/03/02 |
+------------+------------------------------------------------------------------------+------------+
| **0.6.0**  | * Add support for arbitrary MxN matrices rather than a single chain    | 2017/02/22 |
+------------+------------------------------------------------------------------------+------------+
| **0.5.3**  | * Huge performance improvements for cascaded MAX7219 devices           | 2017/02/21 |
|            | * Documentation updates                                                |            |
+------------+------------------------------------------------------------------------+------------+
| **0.5.2**  | * Add apostrophe representation to seven-segment display               | 2017/02/19 |
|            | * Deprecate ``luma.led_matrix.legacy`` (moved to ``luma.core.legacy``) |            |
+------------+------------------------------------------------------------------------+------------+
| **0.4.4**  | * Support both common-row anode and common-row cathode LED matrices    | 2017/02/02 |
+------------+------------------------------------------------------------------------+------------+
| **0.4.3**  | * Add translation mapping to accomodate Pimoroni's 8x8 Unicorn HAT     | 2017/01/29 |
|            | * MAX7219 optimizations                                                |            |
+------------+------------------------------------------------------------------------+------------+
| **0.4.2**  | * Fix bug in neopixel initialization                                   | 2017/01/27 |
|            | * Improved demo scripts                                                |            |
|            | * Additional tests                                                     |            |
+------------+------------------------------------------------------------------------+------------+
| **0.4.0**  | * Add support for WS2812 NeoPixel strips/arrays                        | 2017/01/23 |
+------------+------------------------------------------------------------------------+------------+
| **0.3.3**  | * Fix for dot muncher: not handling full-stop at line end              | 2017/01/21 |
|            | * Documentation updates                                                |            |
+------------+------------------------------------------------------------------------+------------+
| **0.3.2**  | * Replace bytearray with ``mutable_string`` implementation             | 2017/01/20 |
|            | * More tests                                                           |            |
+------------+------------------------------------------------------------------------+------------+
| **0.3.1**  | * Python 3 compatibility (fix exception in bytearray creation)         | 2017/01/20 |
|            | * Begin to add tests & test infrastructure                             |            |
+------------+------------------------------------------------------------------------+------------+
| **0.3.0**  | * **BREAKING CHANGE:** Package rename to ``luma.led_matrix``           | 2017/01/19 |
+------------+------------------------------------------------------------------------+------------+
| **0.2.3**  | * Bit-bang version using wiringPi                                      | 2013/01/28 |
+------------+------------------------------------------------------------------------+------------+