USBF_EP0_OUT_INT
sts = ep0->status & (USBF_EP0_SETUP_INT | USBF_EP0_IN_INT | USBF_EP0_OUT_INT |
if (!(sts & (USBF_EP0_OUT_INT | USBF_EP0_OUT_NULL_INT)))
sts &= ~(USBF_EP0_OUT_INT | USBF_EP0_OUT_NULL_INT);
if (!(sts & (USBF_EP0_OUT_INT | USBF_EP0_OUT_NULL_INT)))
sts &= ~(USBF_EP0_OUT_INT | USBF_EP0_OUT_NULL_INT);
if (ep0->status & USBF_EP0_OUT_INT) {