301     // fetch state from each slave

   301     if (list_empty(&master->slaves)) {

   302     fsm->slave = list_entry(master->slaves.next, ec_slave_t, list);

   302         fsm->state = ec_fsm_master_state_end;

   303     ec_datagram_fprd(fsm->datagram, fsm->slave->station_address, 0x0130, 2);

   303     } else {

   304     fsm->retries = EC_FSM_RETRIES;

   304         // fetch state from each slave

   305     fsm->state = ec_fsm_master_state_read_states;

   305         fsm->slave = list_entry(master->slaves.next, ec_slave_t, list);

   306         ec_datagram_fprd(fsm->datagram, fsm->slave->station_address, 0x0130, 2);

   307         fsm->retries = EC_FSM_RETRIES;

   308         fsm->state = ec_fsm_master_state_read_states;

   309     }