Connecting a USB device to MATLAB to receive data

Hello.

I am trying to connect a device that collects data and outputs that information through a usb to a computer. A software exists to receive the information but the goal is to bypass that and send the information directly to matlab. The device streams 43 bytes every 53 usec, the packet structure starts with a 16 byte header that starts with ASCII spelling out yoho, bytes 17-19 contain status of the device and bytes 20-43 contain the information of the sensors, the information in bytes 20-43 are split into three byte chunks (ex. s1 20-22, s2 23-25, s3 26-28). The device is sampling at 19.23 kHz so if the data cant be received at that speed or faster the data is not viable.

Thank you for any assistance

-KT

[chrisw23]

Look for a .net compatible driver, load the assembly and instantiate the class to get a driver object.

asm = NET.addAssembly(<pathToYourUsbDriver.dll> ) % look for classes provided under asm.Classes

myDrvObj = <identifiedUsbDriverClass>

myDrvObj.<OpenCommunication> % i.e. to open device communication

use details(myDrvObj) / methodsview(myDrvObj) to get API informations or read the API description provided

Answer 1

[Rishav]

Hi Kevin,

I understand that you are trying to receive information from USB directly to MATLAB.

Please refer to the below mentioned documentation for the same:

https://www.mathworks.com/help/matlab/serial-port-devices.html

Also refer to this documentation for a brief idea on 'serial' function:

https://www.mathworks.com/help/matlab/ref/serial.html

Answer 2

[Ralf Handrich]

Hello Kevin,

you can try AHid.dll. It's a commercial product, but there is also a free version that you can try:

http://ahidlib.com/

Best regards, Potter