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TM4C and usb

Josue Pareja
Expert 1605 points

I need to transfer ADC information from the MCU to my computer, i have been using UART, but now I need more speed, thats is why I want to use USB2.0, but the problem is that I have never configured USB, only UART, I would like to know how I can transfer characters using USB, and I dont know what example will help me do that, also I do not know how I should connect it, I must use two USB cables???one for the debuger and other for the TM4C129e USB, (I ask that because the USB "bulk example" uses UART to print some lines),   Also I am using UBUNTU in my computer, and the Tivaware Usb bulk example says to install a Windows INF file (for windows XP and Vista) . To receiving the data via UART i was just using MATLAB for UBUNTU.

Does anyone got some introduction information for USB2.0 (no wikipedia ), I would like to know how much transfer bits it use, parity, stop bits, etc (if it use).
Also some introduction information for USB in the TM4C129e.

Thanks in advance!!!

  • 0
    TI__Guru**** 193046 points
    Hi Josue,

    The "usb_bulk_example" project is a good start. There is other VC++ project for window command line running as host on PC side. This VC++ project is located \tivaware_c_xxx\tools\usb_bulk_example. You need 2 USB cables: one for ICDI, and one for USB device which is plugged onto U7 port on TM4C129 launchpad.

    This is link is pretty helpful:
    www.beyondlogic.org/.../usb1.shtml

    Regards,
    QJ