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