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Original question:

USB Problem-F28069

CCS/TMS320F28069: USB 28069U IC

Bojun Wang
Prodigy 90 points
Part Number: TMS320F28069


Tool/software: Code Composer Studio

Hi,

I'm trying to use 28069U IC to implement a control board.

However, I don't want to use the JTAG pins to connect a computer,

I prefer to using the USB0DP & USB0DM pins to connect a computer (through USB port).

Here is a question, if I want to use(enable) USB0DP & USB0DM pins,

I have to set the USBIOEN bit in the GPACTRL2 register,

but I don't connect to computer through JTAG, how do I set the GPACTRL2 register?

Thanks in advance.

Bojun Wang

  • 0
    TI__Mastermind 32995 points
    Hi,

    You can use a ROM bootloader to load a program into RAM and run that program. You can also use the serial flash programmer or USB flash programmer to load an application into flash.

    Please see www.ti.com/.../sprabv4b.pdf

    Also, the USB bootloader in ROM will configure the USB and enable communication. You can use the usb flash programmer Visual Studio project and executable to communicate with the bootloader.

    Hope this helps,
    sal