USBSACM_PIPE_BUSY
if (((acm_port->acm_bulkin_state == USBSACM_PIPE_BUSY) ||
} else if (acm_port->acm_bulkin_state == USBSACM_PIPE_BUSY) {
acm_port->acm_bulkin_state = USBSACM_PIPE_BUSY;
acm_port->acm_bulkout_state = USBSACM_PIPE_BUSY;
acm_port->acm_intr_state = USBSACM_PIPE_BUSY;