AT91_UDP_ENDBUSRES
if (status & AT91_UDP_ENDBUSRES) {
at91_udp_write(udc, AT91_UDP_ICR, AT91_UDP_ENDBUSRES);
at91_udp_write(udc, AT91_UDP_ICR, AT91_UDP_ENDBUSRES);
(AT91_UDP_ENDBUSRES | AT91_UDP_RXRSM | AT91_UDP_RXSUSP)