Jump to main content

##

# Hub TPL Table Configuration

The Host Layer attaches the USB Hub Host Client Driver to a Hub device only if the TPL table contains an entry to enable this feature. The driver interface for such a TPL entry should point to USB_HOST_HUB_INTERFACE. The following code shows an example of the TPL entry for the adding Hub support to the application.

## Example:

    /* This code shows an example of how to initialize the TPL table to
     * support a USB Hub Host Client Driver */
    #include "usb/usb_host_hub.h"
    #include "usb/usb_hub.h"

    const USB_HOST_TPL_ENTRY USBTPList[ 2 ] =
    {
        TPL_INTERFACE_CLASS_SUBCLASS_PROTOCOL(USB_HUB_CLASS_CODE, 0x00, 0x00, NULL,  USB_HOST_HUB_INTERFACE),

        /* A high-speed hub will report the number of transaction translators in the
         * protocol field. We can ignore this and let the host layer load the hub
         * driver for a high-speed hub */

        TPL_INTERFACE_CLASS (USB_HUB_CLASS_CODE, NULL, USB_HOST_HUB_INTERFACE)
    };