1 /* 2 * Copyright (c) 2001, Swedish Institute of Computer Science. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the Institute nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * This file is part of the lwIP TCP/IP stack. 30 * 31 * Author: Adam Dunkels <adam@sics.se> 32 * 33 */ 34 #ifndef __NETIF_SLIPIF_H__ 35 #define __NETIF_SLIPIF_H__ 36 37 #include "lwip/opt.h" 38 #include "lwip/netif.h" 39 40 /** Set this to 1 to start a thread that blocks reading on the serial line 41 * (using sio_read()). 42 */ 43 #ifndef SLIP_USE_RX_THREAD 44 #define SLIP_USE_RX_THREAD !NO_SYS 45 #endif 46 47 /** Set this to 1 to enable functions to pass in RX bytes from ISR context. 48 * If enabled, slipif_received_byte[s]() process incoming bytes and put assembled 49 * packets on a queue, which is fed into lwIP from slipif_poll(). 50 * If disabled, slipif_poll() polls the serila line (using sio_tryread()). 51 */ 52 #ifndef SLIP_RX_FROM_ISR 53 #define SLIP_RX_FROM_ISR 0 54 #endif 55 56 /** Set this to 1 (default for SLIP_RX_FROM_ISR) to queue incoming packets 57 * received by slipif_received_byte[s]() as long as PBUF_POOL pbufs are available. 58 * If disabled, packets will be dropped if more than one packet is received. 59 */ 60 #ifndef SLIP_RX_QUEUE 61 #define SLIP_RX_QUEUE SLIP_RX_FROM_ISR 62 #endif 63 64 #ifdef __cplusplus 65 extern "C" { 66 #endif 67 68 err_t slipif_init(struct netif * netif); 69 void slipif_poll(struct netif *netif); 70 #if SLIP_RX_FROM_ISR 71 void slipif_process_rxqueue(struct netif *netif); 72 void slipif_received_byte(struct netif *netif, u8_t data); 73 void slipif_received_bytes(struct netif *netif, u8_t *data, u8_t len); 74 #endif /* SLIP_RX_FROM_ISR */ 75 76 #ifdef __cplusplus 77 } 78 #endif 79 80 #endif 81 82