Graphical User Interface for EasyMCP2221 library.
EasyMCP2221 Workbench is a GUI to play with MCP2221 and MCP2221A chips. It is based on EasyMCP2221 library.
See full documentation on easymcp2221.readthedocs.io.
Pre-compiled binaries exists for Windows.
Clone the repository and install requirements.
pip install -r requirements.txt
Start EasyMCP2221-workbench.pyw script.
From command line:
cd workbench
python EasyMCP2221-workbench.pyw
or, to hide console:
pythonw EasyMCP2221-workbench.pyw
Additionaly, in some Python instalations, you can double click on EasyMCP2221-workbench.pyw.
On ubuntu, Tkinter library cannot be installed by pip. It needs to be installed from system packages.
sudo apt-get install python3-tk
The main window has 2 sections: the top frame and the bottom frames.
The top frame shows device strings. And allow to configure some chip settings. Like ADC and DAC references.
- The quit button terminates the application.
- Reset resets the device and reload stored configuration.
- I2C Scan performs an I2C bus scanning and display the devices found.
Select the designated function for each of the four GP ports.
The buttons are red when the output is logic 0 and green otherwise.
Toggle button toggle the output status.
Push button changes the output while it is held down.
The label is red when the output is logic 0 and green otherwise.
MCP2221 has three channel ADC.
When the reference is VDD, the value is shown as a percentage of the VDD. VDD (5V) and VDD (3.3V) virtual references are provided for easy reading when the device is powered with 5V or 3.3V supply.
MCP2221 has only one DAC.
Frequency and duty cycle can be chosen from a set of predefined values.
To compile:
pyinstaller EasyMCP2221-workbench.spec
Note pyinstaller-action-windows requires spec file with the sources.
Command line to regenerate spec file:
pyinstaller \
--onefile \
-w \
--icon=assets/icon.ico \
--add-data="assets/icon.ico;assets" \
--add-data="assets/icon.png;assets" \
-n "EasyMCP2221-workbench" \
EasyMCP2221-workbench.pyw