How to control a USB port using Python

In this tutorial, we will show you how to control a USB port using Python programming language

Updated March 29, 2023

What? You can control a USB port with Python? Yes you can!

Hello and welcome to this tutorial on how to control USB port using Python. USB (Universal Serial Bus) is a popular interface used for connecting devices to computers. In this tutorial, we will show you how to control a USB port using Python programming language.

Method: Using the PyUSB Library

The PyUSB library is a Python module that provides easy access to USB devices. It allows you to read and write data to USB devices and control USB ports. Here’s an example of how to control a USB port using the PyUSB library:

import usb.core
import usb.util

# Find the USB device
dev = usb.core.find(idVendor=0x045e, idProduct=0x028e)

# If the device is not found, raise an error
if dev is None:
    raise ValueError('Device not found')

# Set the configuration of the USB device
dev.set_configuration()

# Write data to the USB port
dev.write(1, b'Hello, World!')

# Read data from the USB port
data = dev.read(0x81, 1024)

# Print the data
print(data)

In this code, we first import the necessary libraries, including usb.core and usb.util. We then use the find() method from the usb.core module to locate the USB device with the specified idVendor and idProduct. If the device is not found, we raise a ValueError. We then set the configuration of the USB device using the set_configuration() method. We write data to the USB port using the write() method and read data from the USB port using the read() method. Finally, we print the data read from the USB port.

Conclusion

In this tutorial, we have shown you how to control a USB port using Python programming language. We have covered the basics of USB devices, finding the USB device, setting the configuration of the USB device, writing data to the USB port, and reading data from the USB port using the PyUSB library.

It’s important to note that controlling USB devices can be dangerous and should be done with caution. Always consult the documentation for the USB device and the PyUSB library before attempting to control a USB port.

Thank you for reading, and happy coding!