LWIP_DEBUGF( SIO_FIFO_DEBUG, ("(WRAP) ") );sys_sem_signal(&fifo->sem );/* leave critical */fifoPut( fifo, fd );return; }if( fifo->getWaiting ) { fifo->getWaiting = FALSE;sys_sem_signal(&fifo->getSem ); }sys_sem_signal(&fifo->sem );/* leave critical */return; } 开发...