Thread: read data from USB Port

  1. #1
    Registered User
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    Dec 2009

    read data from USB Port

    i am new in this forum. I need to write a c or c++ program to read data from / write data to a USB port. can anyone please tell me the steps i need to follow to write the program.
    thank you in advance

  2. #2
    Registered User
    Join Date
    Sep 2009
    This is a good help..try searching the forum under usb

    Quote Originally Posted by MK27 View Post
    Hardware is a "kernel space" realm; the things you refer to are "user space" applications that rely on the kernel 100% to inform them.

    So, you could write a simple kernel module and that will be a sure fire, custom method if you want notification of USB events. But then you have to learn some kernel programming.

    On the other hand, I have not looked at the API for libusb. "kudbd" or whatever is a distro specific thing, maybe you could use that. There are more universal high level methods you could use such as putting a hook into the kernel log, or into /proc, both of which record USB events.

    Just keep googling and find a method that works for what you want to do...but on a low level, using the kernel C API is probably the only way.

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