mirror of
https://github.com/lwip-tcpip/lwip.git
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129 lines
4.2 KiB
C
129 lines
4.2 KiB
C
/*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Dirk Ziegelmeier <dziegel@gmx.de>
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*
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*/
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#include "lwip/apps/mqtt.h"
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#include "mqtt_example.h"
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#if LWIP_TCP
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/** Define this to a compile-time IP address initialization
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* to connect anything else than IPv4 loopback
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*/
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#ifndef LWIP_MQTT_EXAMPLE_IPADDR_INIT
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#if LWIP_IPV4
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#define LWIP_MQTT_EXAMPLE_IPADDR_INIT = IPADDR4_INIT(PP_HTONL(IPADDR_LOOPBACK))
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#else
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#define LWIP_MQTT_EXAMPLE_IPADDR_INIT
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#endif
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#endif
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static ip_addr_t mqtt_ip LWIP_MQTT_EXAMPLE_IPADDR_INIT;
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static mqtt_client_t* mqtt_client;
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static const struct mqtt_connect_client_info_t mqtt_client_info =
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{
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"test",
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NULL, /* user */
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NULL, /* pass */
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100, /* keep alive */
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NULL, /* will_topic */
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NULL, /* will_msg */
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0, /* will_qos */
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0 /* will_retain */
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#if LWIP_ALTCP && LWIP_ALTCP_TLS
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, NULL
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#endif
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};
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static void
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mqtt_incoming_data_cb(void *arg, const u8_t *data, u16_t len, u8_t flags)
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{
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const struct mqtt_connect_client_info_t* client_info = (const struct mqtt_connect_client_info_t*)arg;
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LWIP_UNUSED_ARG(data);
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LWIP_PLATFORM_DIAG(("MQTT client \"%s\" data cb: len %d, flags %d\n", client_info->client_id,
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(int)len, (int)flags));
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}
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static void
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mqtt_incoming_publish_cb(void *arg, const char *topic, u32_t tot_len)
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{
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const struct mqtt_connect_client_info_t* client_info = (const struct mqtt_connect_client_info_t*)arg;
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LWIP_PLATFORM_DIAG(("MQTT client \"%s\" publish cb: topic %s, len %d\n", client_info->client_id,
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topic, (int)tot_len));
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}
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static void
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mqtt_request_cb(void *arg, err_t err)
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{
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const struct mqtt_connect_client_info_t* client_info = (const struct mqtt_connect_client_info_t*)arg;
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LWIP_PLATFORM_DIAG(("MQTT client \"%s\" request cb: err %d\n", client_info->client_id, (int)err));
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}
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static void
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mqtt_connection_cb(mqtt_client_t *client, void *arg, mqtt_connection_status_t status)
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{
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const struct mqtt_connect_client_info_t* client_info = (const struct mqtt_connect_client_info_t*)arg;
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LWIP_UNUSED_ARG(client);
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LWIP_PLATFORM_DIAG(("MQTT client \"%s\" connection cb: status %d\n", client_info->client_id, (int)status));
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if (status == MQTT_CONNECT_ACCEPTED) {
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mqtt_sub_unsub(client,
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"topic_qos1", 1,
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mqtt_request_cb, LWIP_CONST_CAST(void*, client_info),
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1);
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mqtt_sub_unsub(client,
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"topic_qos0", 0,
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mqtt_request_cb, LWIP_CONST_CAST(void*, client_info),
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1);
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}
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}
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#endif /* LWIP_TCP */
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void
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mqtt_example_init(void)
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{
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#if LWIP_TCP
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mqtt_client = mqtt_client_new();
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mqtt_set_inpub_callback(mqtt_client,
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mqtt_incoming_publish_cb,
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mqtt_incoming_data_cb,
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LWIP_CONST_CAST(void*, &mqtt_client_info));
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mqtt_client_connect(mqtt_client,
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&mqtt_ip, MQTT_PORT,
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mqtt_connection_cb, LWIP_CONST_CAST(void*, &mqtt_client_info),
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&mqtt_client_info);
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#endif /* LWIP_TCP */
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}
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