Thank you to anyone who has already donated - your generous donations helped make three months of treatment possible.

My brother Nate continues to fight stage IV Hodgkin's lymphoma. He's just 31, with a wife and baby girl. They have no active income (since he's been unable to return to work), no insurance, and cannot afford the treatment he needs. Nate and his family need your help. Please consider a donation, every dollar helps. Thanks.

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volatile int8_t configuration = -1;
void udc_tick_task(void)
{
    uint32_t dev_info = DEV_INFO;

    /* This tick task polls for DEV_EN bit set in DEV_INFO  register
     * as well as tracks current requested configuration
     * (DEV_INFO [11:8]). On state change it notifies usb stack
     * about it.
     *
     * It is registered on usb connection and removed on usb
     * extraction.
     */

    if (dev_info & DEV_EN)
    {
        if (configuration != ((dev_info >> 8) & 0x0f))
        {
            /* Configuration has changed */
            configuration = ((dev_info >> 8) & 0x0f);

            /* Notify usb stack somehow */
        }
    }
}