USBSACM_PORT_CLOSED
cur_port->acm_port_state = USBSACM_PORT_CLOSED;
USBSACM_PORT_CLOSED) {
USBSACM_PORT_CLOSED) {
(acm_port->acm_port_state != USBSACM_PORT_CLOSED)) {
acm_port->acm_port_state = USBSACM_PORT_CLOSED;