adafruit / adafruit_python_led_backpack Goto Github PK

Python library for controlling LED backpack displays such as 8x8 matrices, bar graphs, and 7/14-segment displays on a Raspberry Pi or BeagleBone Black.

License: MIT License

Python 100.00%

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adafruit_python_led_backpack's Issues

I want to make a PR to extend character set for SevenSegment.py

Hi all,

I have a working version of SevenSegment.py in my local branch that adds a variety of new characters to the seven segment display driver. Its backwards compatible, doesn't add any significant overhead (loading on my RPi0W still takes < 150 microseconds) and works correctly when inverted. Also I added some comments about the logic behind the driver just to help the next reader be informed about how it works.

Do I have to do anything special to submit the PR? I'm getting a 403 from my git push.

Josh

Can't subclass SevenSegment?

I'm new to python so hopefully it's just a 'me' thing...

I've tried subclassing SevenSegment, and always get an error about expecting 2 arguments but got 3...

Basically I've just done:


from Adafruit_LED_Backpack import SevenSegment

class ClockDisplay(SevenSegment):

    def __init__(self, **kwargs):
        super(ClockDisplay, self).__init__(**kwargs)

and that seems to fail. (this is from memory, i'll double check the code when i get home - i did have some other functions too, just trying to simplify the issue as much as i can)

What am I doing wrong?
I'd like to subclass it so that I can extend some of the functionality, and I'm hoping once I get it write to put a pull request in, but it's hard when i can't get this bit to work

If i run from the dev folder, and use 'from SevenSegment import SevenSegment', the code seems to work...

5V incompatible

When I connect the red LED to 3.3V, sevensegment_test.py runs perfectly. However the display is too dim using the raspberry pi model 3, so I need 5V. When I connect to 5V, I get a input/output error. in write_i2c_block_data

docstring error in Matrix8x8.py for set_pixel()

Says valid range is 0 to 8, should say 0 to 7.

No module named Adafruit_LED_Backpack

Hello,

Recently, I just bought a 4 Digit-7Segment Display from Adafruit. After connecting the LED pack with my Raspberry Pi 2 I just wanted to start an example code, which is part of the official Code package. Unfortunately, I was not able to run the example Code due to an error, which I could not solve on my one. I would really appreciate, if someone give me a hint or an advise how I can handle this.

pi@raspberrypi ~ $ ls
Adafruit_Python_LED_Backpack Documents python_games Scratch
Desktop Downloads Schrott
pi@raspberrypi ~ $ cd Adafruit_Python_LED_Backpack
pi@raspberrypi ~/Adafruit_Python_LED_Backpack $ ls
Adafruit_LED_Backpack examples ez_setup.py LICENSE README.md setup.py
pi@raspberrypi ~/Adafruit_Python_LED_Backpack $ cd examples
pi@raspberrypi ~/Adafruit_Python_LED_Backpack/examples $ ls
alphanum4_test.py ex_7segment_clock.py sevensegment_test.py
bicolor_bargraph24_test.py matrix8x16_test.py
bicolor_matrix8x8_test.py matrix8x8_test.py
pi@raspberrypi ~/Adafruit_Python_LED_Backpack/examples $ sudo python ex_7segment_clock.py
Traceback (most recent call last):
File "ex_7segment_clock.py", line 6, in
from Adafruit_LED_Backpack import SevenSegment
ImportError: No module named Adafruit_LED_Backpack
pi@raspberrypi ~/Adafruit_Python_LED_Backpack/examples $ ^C

Thank you very much in advance!

error in print_number_str() when executed by python3

Platform/operating system (i.e. Raspberry Pi with Raspbian operating system,
Windows 32-bit, Windows 64-bit, Mac OSX 64-bit, etc.): INSERT PLATFORM/OPERATING
SYSTEM HERE

Rasberry Pi with Raspbian
4.4.21-v7+ #911 SMP Thu Sep 15 14:22:38 BST 2016 armv7l GNU/Linux

Python version (run python -version or python3 -version): INSERT PYTHON
VERSION HERE

Python 3.4.2

Error message you are receiving, including any Python exception traces: INSERT
ERROR MESAGE/EXCEPTION TRACES HERE*

$ python3 ./AlphaNumTest.py
Traceback (most recent call last):
File "./AlphaNumTest.py", line 101, in
display.print_number_str("22.", justify_right=False)
File "/usr/local/lib/python3.4/dist-packages/Adafruit_LED_Backpack-1.8.1-py3.4.egg/Adafruit_LED_Backpack/AlphaNum4.py", line 183, in print_number_str
TypeError: translate() takes exactly one argument (2 given)

List the steps to reproduce the problem below (if possible attach code or commands
to run): LIST REPRO STEPS BELOW

Code executes fine with python2. I have not found a correction for python3.

Need to change SDA pins

Everything is working great when I use SDA1/SCL1 (pins NUMBERS 3/5 GPIO 8/9 RPI 3 model B) but I need to use other pins instead.

I thought on using pin NUMBERS 27/28 SDA0/SCL0.

Can I?
please help.

thanks!

BicolorMatrix8x8 example code error line 32

Adafruit_Python_LED_Backpack/examples/bicolor_matrix8x8_test.py

line 32
currently:

display = Matrix8x8.Matrix8x8(address=0x74, busnum=1)

should read:

display = BicolorMatrix8x8.BicolorMatrix8x8(address=0x74, busnum=1)

Thought my display was broken when I changed the first BicolorMatrix8x8 but missed the second.

Won't work

Hey,
I'm trying to run the following with a Raspberry pi 2 model B:

pi@rbp2biancm1:~/Adafruit_Python_LED_Backpack/examples $ sudo python bicolor_matrix8x8_test.py

Traceback (most recent call last):
File "bicolor_matrix8x8_test.py", line 35, in
display.begin()
File "build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack/HT16K33.py", line 53, in begin
File "build/bdist.linux-armv7l/egg/Adafruit_GPIO/I2C.py", line 127, in writeList
File "build/bdist.linux-armv7l/egg/Adafruit_PureIO/smbus.py", line 274, in write_i2c_block_data
IOError: [Errno 5] Input/output error

But there are no files nor subfolders in build/bdist.linux-armv7

Can you please fix this ?

Not able to install with the setup.py/ez_setup.py

Hello I have issues installing the libraries with the setup.py and ez_setup.py scripts. I have installed all the necessary dependencies that were documented in the readme but I`m still unable to install the LED Backpack:

root@TEST-RPi:/home/pi/Adafruit_Python_LED_Backpack# apt-get install build-essential python-dev python-smbus python-imaging git
Reading package lists... Done
Building dependency tree
Reading state information... Done
build-essential is already the newest version (12.3).
git is already the newest version (1:2.11.0-3+deb9u3).
python-dev is already the newest version (2.7.13-2).
python-imaging is already the newest version (4.0.0-4).
python-smbus is already the newest version (3.1.2-3).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@TEST-RPi:/home/pi/Adafruit_Python_LED_Backpack# python setup.py install
Extracting in /tmp/tmpedyF2X
Traceback (most recent call last):
File "setup.py", line 4, in
use_setuptools()
File "/home/pi/Adafruit_Python_LED_Backpack/ez_setup.py", line 128, in use_setuptools
return _do_download(version, download_base, to_dir, download_delay)
File "/home/pi/Adafruit_Python_LED_Backpack/ez_setup.py", line 108, in _do_download
_build_egg(egg, archive, to_dir)
File "/home/pi/Adafruit_Python_LED_Backpack/ez_setup.py", line 57, in _build_egg
with archive_context(archive_filename):
File "/usr/lib/python2.7/contextlib.py", line 17, in enter
return self.gen.next()
File "/home/pi/Adafruit_Python_LED_Backpack/ez_setup.py", line 88, in archive_context
with get_zip_class()(filename) as archive:
File "/usr/lib/python2.7/zipfile.py", line 770, in init
self._RealGetContents()
File "/usr/lib/python2.7/zipfile.py", line 813, in _RealGetContents
raise BadZipfile, "File is not a zip file"
zipfile.BadZipfile: File is not a zip file
root@TEST-RPi:/home/pi/Adafruit_Python_LED_Backpack# python ez_setup.py install
Extracting in /tmp/tmpFQnNJI
Traceback (most recent call last):
File "ez_setup.py", line 332, in
sys.exit(main())
File "ez_setup.py", line 329, in main
return _install(archive, _build_install_args(options))
File "ez_setup.py", line 46, in _install
with archive_context(archive_filename):
File "/usr/lib/python2.7/contextlib.py", line 17, in enter
return self.gen.next()
File "ez_setup.py", line 88, in archive_context
with get_zip_class()(filename) as archive:
File "/usr/lib/python2.7/zipfile.py", line 770, in init
self._RealGetContents()
File "/usr/lib/python2.7/zipfile.py", line 813, in _RealGetContents
raise BadZipfile, "File is not a zip file"
zipfile.BadZipfile: File is not a zip file
root@TEST-RPi:/home/pi/Adafruit_Python_LED_Backpack#

I`m running the latest version of Raspbian on the Rpi, all dependencies are up to date.

Can you help me?

Thank you in advance!

Problems on RPi

Hey,

i got problems getting it running on raspberrypi. It writes "No File or Directory". i also cant get the "Image" module running. I removed that from the scripts.

here are my outputs:

pi@RPI02 ~ $ wget https://github.com/adafruit/Adafruit_Python_LED_Backpack/archive/master.zip
--2015-07-25 10:30:25--  https://github.com/adafruit/Adafruit_Python_LED_Backpack/archive/master.zip
Resolving github.com (github.com)... 192.30.252.130
Connecting to github.com (github.com)|192.30.252.130|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://codeload.github.com/adafruit/Adafruit_Python_LED_Backpack/zip/master [following]
--2015-07-25 10:30:32--  https://codeload.github.com/adafruit/Adafruit_Python_LED_Backpack/zip/master
Resolving codeload.github.com (codeload.github.com)... 192.30.252.145
Connecting to codeload.github.com (codeload.github.com)|192.30.252.145|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [application/zip]
Saving to: `master.zip'

    [ <=>                                                                                                                                                     ] 26,231      --.-K/s   in 0.1s    

2015-07-25 10:30:36 (190 KB/s) - `master.zip' saved [26231]


pi@RPI02 ~ $ unzip -a master.zip
Archive:  master.zip
a6da0e5130ae23d5f50d0a22a9cb2a56ecc31298
   creating: Adafruit_Python_LED_Backpack-master/
 extracting: Adafruit_Python_LED_Backpack-master/.gitignore  [text]  
   creating: Adafruit_Python_LED_Backpack-master/Adafruit_LED_Backpack/
  inflating: Adafruit_Python_LED_Backpack-master/Adafruit_LED_Backpack/AlphaNum4.py  [text]  
  inflating: Adafruit_Python_LED_Backpack-master/Adafruit_LED_Backpack/BicolorBargraph24.py  [text]  
  inflating: Adafruit_Python_LED_Backpack-master/Adafruit_LED_Backpack/BicolorMatrix8x8.py  [text]  
  inflating: Adafruit_Python_LED_Backpack-master/Adafruit_LED_Backpack/HT16K33.py  [text]  
  inflating: Adafruit_Python_LED_Backpack-master/Adafruit_LED_Backpack/Matrix8x8.py  [text]  
  inflating: Adafruit_Python_LED_Backpack-master/Adafruit_LED_Backpack/SevenSegment.py  [text]  
 extracting: Adafruit_Python_LED_Backpack-master/Adafruit_LED_Backpack/__init__.py  [empty] 
  inflating: Adafruit_Python_LED_Backpack-master/LICENSE  [text]  
  inflating: Adafruit_Python_LED_Backpack-master/README.md  [text]  
   creating: Adafruit_Python_LED_Backpack-master/examples/
  inflating: Adafruit_Python_LED_Backpack-master/examples/alphanum4_test.py  [text]  
  inflating: Adafruit_Python_LED_Backpack-master/examples/bicolor_bargraph24_test.py  [text]  
  inflating: Adafruit_Python_LED_Backpack-master/examples/bicolor_matrix8x8_test.py  [text]  
  inflating: Adafruit_Python_LED_Backpack-master/examples/matrix8x8_test.py  [text]  
  inflating: Adafruit_Python_LED_Backpack-master/examples/sevensegment_test.py  [text]  
  inflating: Adafruit_Python_LED_Backpack-master/ez_setup.py  [text]  
  inflating: Adafruit_Python_LED_Backpack-master/setup.py  [text]  


pi@RPI02 ~ $ cd Adafruit_Python_LED_Backpack-master/


pi@RPI02 ~/Adafruit_Python_LED_Backpack-master $ sudo python setup.py install 
running install
running bdist_egg
running egg_info
creating Adafruit_LED_Backpack.egg-info
writing requirements to Adafruit_LED_Backpack.egg-info/requires.txt
writing Adafruit_LED_Backpack.egg-info/PKG-INFO
writing top-level names to Adafruit_LED_Backpack.egg-info/top_level.txt
writing dependency_links to Adafruit_LED_Backpack.egg-info/dependency_links.txt
writing manifest file 'Adafruit_LED_Backpack.egg-info/SOURCES.txt'
reading manifest file 'Adafruit_LED_Backpack.egg-info/SOURCES.txt'
writing manifest file 'Adafruit_LED_Backpack.egg-info/SOURCES.txt'
installing library code to build/bdist.linux-armv7l/egg
running install_lib
running build_py
creating build
creating build/lib.linux-armv7l-2.7
creating build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack
copying Adafruit_LED_Backpack/BicolorBargraph24.py -> build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack
copying Adafruit_LED_Backpack/HT16K33.py -> build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack
copying Adafruit_LED_Backpack/SevenSegment.py -> build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack
copying Adafruit_LED_Backpack/__init__.py -> build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack
copying Adafruit_LED_Backpack/AlphaNum4.py -> build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack
copying Adafruit_LED_Backpack/Matrix8x8.py -> build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack
copying Adafruit_LED_Backpack/BicolorMatrix8x8.py -> build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack
creating build/bdist.linux-armv7l
creating build/bdist.linux-armv7l/egg
creating build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack
copying build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack/BicolorBargraph24.py -> build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack
copying build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack/HT16K33.py -> build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack
copying build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack/SevenSegment.py -> build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack
copying build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack/__init__.py -> build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack
copying build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack/AlphaNum4.py -> build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack
copying build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack/Matrix8x8.py -> build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack
copying build/lib.linux-armv7l-2.7/Adafruit_LED_Backpack/BicolorMatrix8x8.py -> build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack
byte-compiling build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack/BicolorBargraph24.py to BicolorBargraph24.pyc
byte-compiling build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack/HT16K33.py to HT16K33.pyc
byte-compiling build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack/SevenSegment.py to SevenSegment.pyc
byte-compiling build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack/__init__.py to __init__.pyc
byte-compiling build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack/AlphaNum4.py to AlphaNum4.pyc
byte-compiling build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack/Matrix8x8.py to Matrix8x8.pyc
byte-compiling build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack/BicolorMatrix8x8.py to BicolorMatrix8x8.pyc
creating build/bdist.linux-armv7l/egg/EGG-INFO
copying Adafruit_LED_Backpack.egg-info/PKG-INFO -> build/bdist.linux-armv7l/egg/EGG-INFO
copying Adafruit_LED_Backpack.egg-info/SOURCES.txt -> build/bdist.linux-armv7l/egg/EGG-INFO
copying Adafruit_LED_Backpack.egg-info/dependency_links.txt -> build/bdist.linux-armv7l/egg/EGG-INFO
copying Adafruit_LED_Backpack.egg-info/requires.txt -> build/bdist.linux-armv7l/egg/EGG-INFO
copying Adafruit_LED_Backpack.egg-info/top_level.txt -> build/bdist.linux-armv7l/egg/EGG-INFO
zip_safe flag not set; analyzing archive contents...
creating dist
creating 'dist/Adafruit_LED_Backpack-1.5.0-py2.7.egg' and adding 'build/bdist.linux-armv7l/egg' to it
removing 'build/bdist.linux-armv7l/egg' (and everything under it)
Processing Adafruit_LED_Backpack-1.5.0-py2.7.egg
Removing /usr/local/lib/python2.7/dist-packages/Adafruit_LED_Backpack-1.5.0-py2.7.egg
Copying Adafruit_LED_Backpack-1.5.0-py2.7.egg to /usr/local/lib/python2.7/dist-packages
Adafruit-LED-Backpack 1.5.0 is already the active version in easy-install.pth

Installed /usr/local/lib/python2.7/dist-packages/Adafruit_LED_Backpack-1.5.0-py2.7.egg
Processing dependencies for Adafruit-LED-Backpack==1.5.0
Searching for Adafruit-GPIO==0.9.3
Best match: Adafruit-GPIO 0.9.3
Processing Adafruit_GPIO-0.9.3-py2.7.egg
Adafruit-GPIO 0.9.3 is already the active version in easy-install.pth

Using /usr/local/lib/python2.7/dist-packages/Adafruit_GPIO-0.9.3-py2.7.egg
Searching for spidev==3.0
Best match: spidev 3.0
Processing spidev-3.0-py2.7-linux-armv7l.egg
spidev 3.0 is already the active version in easy-install.pth

Using /usr/local/lib/python2.7/dist-packages/spidev-3.0-py2.7-linux-armv7l.egg
Finished processing dependencies for Adafruit-LED-Backpack==1.5.0


pi@RPI02 ~/Adafruit_Python_LED_Backpack-master $ python examples/bicolor_matrix8x8_test.py 
Traceback (most recent call last):
  File "examples/bicolor_matrix8x8_test.py", line 30, in <module>
    display = BicolorMatrix8x8.BicolorMatrix8x8()
  File "build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack/BicolorMatrix8x8.py", line 40, in __init__
  File "build/bdist.linux-armv7l/egg/Adafruit_LED_Backpack/HT16K33.py", line 46, in __init__
  File "build/bdist.linux-armv7l/egg/Adafruit_GPIO/I2C.py", line 66, in get_i2c_device
  File "build/bdist.linux-armv7l/egg/Adafruit_GPIO/I2C.py", line 95, in __init__
IOError: [Errno 2] No such file or directory


pi@RPI02 ~/Adafruit_Python_LED_Backpack-master $ python --version
Python 2.7.3

Would be awesome if someone can help me. :)