source: azure_iot_hub_f767zi/trunk/asp_baseplatform/lwip/lwip-2.1.2/src/include/netif/slipif.h@ 457

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1/**
2 * @file
3 *
4 * SLIP netif API
5 */
6
7/*
8 * Copyright (c) 2001, Swedish Institute of Computer Science.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * This file is part of the lwIP TCP/IP stack.
36 *
37 * Author: Adam Dunkels <adam@sics.se>
38 *
39 */
40#ifndef LWIP_HDR_NETIF_SLIPIF_H
41#define LWIP_HDR_NETIF_SLIPIF_H
42
43#include "lwip/opt.h"
44#include "lwip/netif.h"
45
46/** Set this to 1 to start a thread that blocks reading on the serial line
47 * (using sio_read()).
48 */
49#ifndef SLIP_USE_RX_THREAD
50#define SLIP_USE_RX_THREAD !NO_SYS
51#endif
52
53/** Set this to 1 to enable functions to pass in RX bytes from ISR context.
54 * If enabled, slipif_received_byte[s]() process incoming bytes and put assembled
55 * packets on a queue, which is fed into lwIP from slipif_poll().
56 * If disabled, slipif_poll() polls the serial line (using sio_tryread()).
57 */
58#ifndef SLIP_RX_FROM_ISR
59#define SLIP_RX_FROM_ISR 0
60#endif
61
62/** Set this to 1 (default for SLIP_RX_FROM_ISR) to queue incoming packets
63 * received by slipif_received_byte[s]() as long as PBUF_POOL pbufs are available.
64 * If disabled, packets will be dropped if more than one packet is received.
65 */
66#ifndef SLIP_RX_QUEUE
67#define SLIP_RX_QUEUE SLIP_RX_FROM_ISR
68#endif
69
70#ifdef __cplusplus
71extern "C" {
72#endif
73
74err_t slipif_init(struct netif * netif);
75void slipif_poll(struct netif *netif);
76#if SLIP_RX_FROM_ISR
77void slipif_process_rxqueue(struct netif *netif);
78void slipif_received_byte(struct netif *netif, u8_t data);
79void slipif_received_bytes(struct netif *netif, u8_t *data, u8_t len);
80#endif /* SLIP_RX_FROM_ISR */
81
82#ifdef __cplusplus
83}
84#endif
85
86#endif /* LWIP_HDR_NETIF_SLIPIF_H */
87
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