USBSACM_PORT_OPEN
ASSERT(acm_port->acm_port_state == USBSACM_PORT_OPEN);
if (cur_port->acm_port_state != USBSACM_PORT_OPEN) {
if (cur_port->acm_port_state == USBSACM_PORT_OPEN) {
if ((acm_port->acm_port_state == USBSACM_PORT_OPEN) && (data_len) &&
(acm_port->acm_port_state == USBSACM_PORT_OPEN) &&
acm_port->acm_port_state = USBSACM_PORT_OPEN;