Control Output Voltage on USB Cable Programmatically

[omidomid]

I'm looking for a way to control the output voltage on a USB cable through programming. I don't know too much about how to program USB devices, but I know there's a default 5v output, a ground, and two data lines in every USB cable. Ideally, I would like to be able to set this voltage output to anything, or make it switch on/off with a given frequency.

Any help is appreciated!

 

[dlgoff]

Here is a http://www.delcom-eng.com/downloads/USBPRGMNL.pdf" . Maybe this will help.

 

[ravenprp]

Controlling the output voltage on a USB cable programmatically is possible with the use of a USB controller or microcontroller. These devices have the capability to communicate with the USB port and manipulate the voltage output.

First, you will need to determine the specific USB controller or microcontroller that is compatible with your system and programming language. Once you have identified the device, you can then use a programming language such as C or Python to write the code for controlling the voltage output.

The code will need to include commands to communicate with the USB controller and set the desired voltage output. This can be done by sending specific signals or commands to the controller, which will then adjust the voltage accordingly.

Additionally, if you want to switch the voltage output on and off at a given frequency, you can use a pulse width modulation (PWM) technique. This involves rapidly turning the voltage output on and off, creating an average voltage that can be adjusted by changing the frequency of the pulses.

It is important to note that not all USB controllers or microcontrollers have the capability to control the voltage output. Make sure to research and choose a device that specifically has this feature.

In conclusion, controlling the output voltage on a USB cable programmatically is possible with the use of a compatible USB controller or microcontroller and the right programming language. With the proper setup and code, you can easily set the voltage output to your desired level or switch it on and off at a specific frequency.