____ INTERFACE AND APPLICATION PROGRAMMING ____
GOALS:
- GROUP ASSIGNMENT:
Compare as many tool options as possible.
- INDIVIDUAL ASSIGNMENT:
Write an application that interfaces a user with an input and/or output device that you made
| PROCESSING |
The first programming language I choose was Processing. The Instructor suggested it since it is was a language conceived for visual and artistic interfaces.
And, in fact, I found it very clear and self-explanatory. Thanks to the informative tutorials and documentation on Processing.org, I explored a lot of basic examples like: forms, images, text, etc...
For my processing interface I decided to use a touch sensor as input, and the window interface as output.
_________________ ARDUINO CODE _________________
As a first step, I wrote the Arduino code for the touch sensor.
_________________ PROCESSING CODE _________________
And then I wrote the processing code combining different color background, images and text.
| PYTHON |
The second programming language I decided experiment with is Python. So I dowloaded it from the official site Python.org.
_____________ INSTALLING PYSERIAL LIBRARY _____________
Python doesn't come with a Serial Commmunication library, so the main site you should install the library from is pypi.org.
I downloaded the library from Git Hub, because it was the first site that I opened while searching on Google.
Either way, a zip folder will be downloaded. After having opened it, I checked that the file for the set up installation was inside it.
After that, I opened Git Bash, I went inside the pyserial folder and I typed the command:
python setup.py install .
Elena@LAPTOP-9DB5PD27 MINGW64 ~
$ cd Desktop/fabacademy2020/week12/pyserial/
Elena@LAPTOP-9DB5PD27 MINGW64 ~/Desktop/fabacademy2020/week12/pyserial
$ python setup.py install
running install
running bdist_egg
running egg_info
creating pyserial.egg-info
writing pyserial.egg-info\PKG-INFO
writing dependency_links to pyserial.egg-info\dependency_links.txt
writing requirements to pyserial.egg-info\requires.txt
writing top-level names to pyserial.egg-info\top_level.txt
writing manifest file 'pyserial.egg-info\SOURCES.txt'
reading manifest file 'pyserial.egg-info\SOURCES.txt'
reading manifest template 'MANIFEST.in'
writing manifest file 'pyserial.egg-info\SOURCES.txt'
installing library code to build\bdist.win-amd64\egg
running install_lib
running build_py
creating build
creating build\lib
creating build\lib\serial
copying serial\rfc2217.py -> build\lib\serial
copying serial\rs485.py -> build\lib\serial
copying serial\serialcli.py -> build\lib\serial
copying serial\serialjava.py -> build\lib\serial
copying serial\serialposix.py -> build\lib\serial
copying serial\serialutil.py -> build\lib\serial
copying serial\serialwin32.py -> build\lib\serial
copying serial\win32.py -> build\lib\serial
copying serial\__init__.py -> build\lib\serial
creating build\lib\serial\tools
copying serial\tools\hexlify_codec.py -> build\lib\serial\tools
copying serial\tools\list_ports.py -> build\lib\serial\tools
copying serial\tools\list_ports_common.py -> build\lib\serial\tools
copying serial\tools\list_ports_linux.py -> build\lib\serial\tools
copying serial\tools\list_ports_osx.py -> build\lib\serial\tools
copying serial\tools\list_ports_posix.py -> build\lib\serial\tools
copying serial\tools\list_ports_windows.py -> build\lib\serial\tools
copying serial\tools\miniterm.py -> build\lib\serial\tools
copying serial\tools\__init__.py -> build\lib\serial\tools
creating build\lib\serial\urlhandler
copying serial\urlhandler\protocol_alt.py -> build\lib\serial\urlhandler
copying serial\urlhandler\protocol_cp2110.py -> build\lib\serial\urlhandler
copying serial\urlhandler\protocol_hwgrep.py -> build\lib\serial\urlhandler
copying serial\urlhandler\protocol_loop.py -> build\lib\serial\urlhandler
copying serial\urlhandler\protocol_rfc2217.py -> build\lib\serial\urlhandler
copying serial\urlhandler\protocol_socket.py -> build\lib\serial\urlhandler
copying serial\urlhandler\protocol_spy.py -> build\lib\serial\urlhandler
copying serial\urlhandler\__init__.py -> build\lib\serial\urlhandler
creating build\lib\serial\threaded
copying serial\threaded\__init__.py -> build\lib\serial\threaded
creating build\bdist.win-amd64
creating build\bdist.win-amd64\egg
creating build\bdist.win-amd64\egg\serial
copying build\lib\serial\rfc2217.py -> build\bdist.win-amd64\egg\serial
copying build\lib\serial\rs485.py -> build\bdist.win-amd64\egg\serial
copying build\lib\serial\serialcli.py -> build\bdist.win-amd64\egg\serial
copying build\lib\serial\serialjava.py -> build\bdist.win-amd64\egg\serial
copying build\lib\serial\serialposix.py -> build\bdist.win-amd64\egg\serial
copying build\lib\serial\serialutil.py -> build\bdist.win-amd64\egg\serial
copying build\lib\serial\serialwin32.py -> build\bdist.win-amd64\egg\serial
creating build\bdist.win-amd64\egg\serial\threaded
copying build\lib\serial\threaded\__init__.py -> build\bdist.win-amd64\egg\serial\threaded
creating build\bdist.win-amd64\egg\serial\tools
copying build\lib\serial\tools\hexlify_codec.py -> build\bdist.win-amd64\egg\serial\tools
copying build\lib\serial\tools\list_ports.py -> build\bdist.win-amd64\egg\serial\tools
copying build\lib\serial\tools\list_ports_common.py -> build\bdist.win-amd64\egg\serial\tools
copying build\lib\serial\tools\list_ports_linux.py -> build\bdist.win-amd64\egg\serial\tools
copying build\lib\serial\tools\list_ports_osx.py -> build\bdist.win-amd64\egg\serial\tools
copying build\lib\serial\tools\list_ports_posix.py -> build\bdist.win-amd64\egg\serial\tools
copying build\lib\serial\tools\list_ports_windows.py -> build\bdist.win-amd64\egg\serial\tools
copying build\lib\serial\tools\miniterm.py -> build\bdist.win-amd64\egg\serial\tools
copying build\lib\serial\tools\__init__.py -> build\bdist.win-amd64\egg\serial\tools
creating build\bdist.win-amd64\egg\serial\urlhandler
copying build\lib\serial\urlhandler\protocol_alt.py -> build\bdist.win-amd64\egg\serial\urlhandler
copying build\lib\serial\urlhandler\protocol_cp2110.py -> build\bdist.win-amd64\egg\serial\urlhandler
copying build\lib\serial\urlhandler\protocol_hwgrep.py -> build\bdist.win-amd64\egg\serial\urlhandler
copying build\lib\serial\urlhandler\protocol_loop.py -> build\bdist.win-amd64\egg\serial\urlhandler
copying build\lib\serial\urlhandler\protocol_rfc2217.py -> build\bdist.win-amd64\egg\serial\urlhandler
copying build\lib\serial\urlhandler\protocol_socket.py -> build\bdist.win-amd64\egg\serial\urlhandler
copying build\lib\serial\urlhandler\protocol_spy.py -> build\bdist.win-amd64\egg\serial\urlhandler
copying build\lib\serial\urlhandler\__init__.py -> build\bdist.win-amd64\egg\serial\urlhandler
copying build\lib\serial\win32.py -> build\bdist.win-amd64\egg\serial
copying build\lib\serial\__init__.py -> build\bdist.win-amd64\egg\serial
byte-compiling build\bdist.win-amd64\egg\serial\rfc2217.py to rfc2217.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\rs485.py to rs485.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\serialcli.py to serialcli.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\serialjava.py to serialjava.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\serialposix.py to serialposix.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\serialutil.py to serialutil.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\serialwin32.py to serialwin32.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\threaded\__init__.py to __init__.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\tools\hexlify_codec.py to hexlify_codec.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\tools\list_ports.py to list_ports.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\tools\list_ports_common.py to list_ports_common.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\tools\list_ports_linux.py to list_ports_linux.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\tools\list_ports_osx.py to list_ports_osx.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\tools\list_ports_posix.py to list_ports_posix.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\tools\list_ports_windows.py to list_ports_windows.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\tools\miniterm.py to miniterm.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\tools\__init__.py to __init__.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\urlhandler\protocol_alt.py to protocol_alt.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\urlhandler\protocol_cp2110.py to protocol_cp2110.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\urlhandler\protocol_hwgrep.py to protocol_hwgrep.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\urlhandler\protocol_loop.py to protocol_loop.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\urlhandler\protocol_rfc2217.py to protocol_rfc2217.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\urlhandler\protocol_socket.py to protocol_socket.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\urlhandler\protocol_spy.py to protocol_spy.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\urlhandler\__init__.py to __init__.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\win32.py to win32.cpython-38.pyc
byte-compiling build\bdist.win-amd64\egg\serial\__init__.py to __init__.cpython-38.pyc
creating build\bdist.win-amd64\egg\EGG-INFO
installing scripts to build\bdist.win-amd64\egg\EGG-INFO\scripts
running install_scripts
running build_scripts
creating build\scripts-3.8
copying and adjusting serial\tools\miniterm.py -> build\scripts-3.8
creating build\bdist.win-amd64\egg\EGG-INFO\scripts
copying build\scripts-3.8\miniterm.py -> build\bdist.win-amd64\egg\EGG-INFO\scripts
copying pyserial.egg-info\PKG-INFO -> build\bdist.win-amd64\egg\EGG-INFO
copying pyserial.egg-info\SOURCES.txt -> build\bdist.win-amd64\egg\EGG-INFO
copying pyserial.egg-info\dependency_links.txt -> build\bdist.win-amd64\egg\EGG-INFO
copying pyserial.egg-info\requires.txt -> build\bdist.win-amd64\egg\EGG-INFO
copying pyserial.egg-info\top_level.txt -> build\bdist.win-amd64\egg\EGG-INFO
zip_safe flag not set; analyzing archive contents...
creating dist
creating 'dist\pyserial-3.4.1-py3.8.egg' and adding 'build\bdist.win-amd64\egg' to it
removing 'build\bdist.win-amd64\egg' (and everything under it)
Processing pyserial-3.4.1-py3.8.egg
Copying pyserial-3.4.1-py3.8.egg to c:\users\39345\appdata\local\programs\python\python38\lib\site-packages
Adding pyserial 3.4.1 to easy-install.pth file
Installing miniterm.py script to C:\Users\39345\AppData\Local\Programs\Python\Python38\Scripts
Installed c:\users\39345\appdata\local\programs\python\python38\lib\site-packages\pyserial-3.4.1-py3.8.egg
Processing dependencies for pyserial==3.4.1
Finished processing dependencies for pyserial==3.4.1
Elena@LAPTOP-9DB5PD27 MINGW64 ~/Desktop/fabacademy2020/week12/pyserial
$
_____________ ARDUINO CODE _____________
I wrote a simple sketch on Arduino to make the LED blink.
_____________ PYTHON GUI WITH TKINTER _____________
As a GUI library, I decided to use Tkinker, since it comes with the Python packages.
I followed an amazing Tkinter course on youtube which I highly recommend.
I wrote a code incorporating the serial communication and a little bit of all the widgets and commands that I had learned during the first 30 m of youtube course.
The interface I created consisted in two types of widget: an entry bar and two buttons.
My idea was that if I write in the entry bar: "Turn LED on" and press the button "Done", the Arduino grove-LED light should turn on and on the window interface i feedback message should appear.
If,after that, I click the "Turn LED off" button, the LED light should turn off.
Here is the correct code:
When I tried to run the python code from Git Bash with the command:
python file_name.py, an error appeared saying that I couldn't have access to the port.
$ python arduino_interface.py
Traceback (most recent call last):
File "arduino_interface.py", line 12, in
arduinoData = serial.Serial(serialPort, baudRate)
File "C:\Users\39345\AppData\Local\Programs\Python\Python38\lib\site-packages\pyserial-3.4.1-py3.8.egg\serial\serialwin32.py", line 33, in __init__
File "C:\Users\39345\AppData\Local\Programs\Python\Python38\lib\site-packages\pyserial-3.4.1-py3.8.egg\serial\serialutil.py", line 242, in __init__
File "C:\Users\39345\AppData\Local\Programs\Python\Python38\lib\site-packages\pyserial-3.4.1-py3.8.egg\serial\serialwin32.py", line 64, in open
serial.serialutil.SerialException: could not open port 'COM3': PermissionError(13, 'Access is denied.', None, 5)
Now, this error could be caused by things like:
1. The Serial port is already opened or used in another programm (if you are using Arduino IDE, for example).
2. The "PermissionError" could also be caused by not running the script as Administrator. So, after closing the terminal, with a left click on the terminal icon app, click on the option
"Run as Administrator".3. If you have already checked point 1 and 2, than there is definitely an error inside the python code.
My error was not only having left open the Arduino IDE window (you must close it before running the python file), but I also had an error in the python code (I was opening the Serial port twice).
After having correct all the mistakes, I run the python file again and everything went fine.
Here's the result:
This is just my very first attempt experimenting with the Python programming language. I still have a lot to learn, but I kinda enjoy this week. It made me realise I much work and effort there is behind creating a Graphic User Interface.
