esp8266-std/ESP8266_RTOS_SDK/examples/mqtt_demo/user/MQTTEcho.c

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2018-11-23 01:43:17 +00:00
/*******************************************************************************
* Copyright (c) 2014 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v1.0 which accompany this distribution.
*
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Ian Craggs - initial API and implementation and/or initial documentation
*******************************************************************************/
#include <stddef.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "mqtt/MQTTClient.h"
#include "user_config.h"
#define MQTT_CLIENT_THREAD_NAME "mqtt_client_thread"
#define MQTT_CLIENT_THREAD_STACK_WORDS 2048
#define MQTT_CLIENT_THREAD_PRIO 8
LOCAL xTaskHandle mqttc_client_handle;
static void messageArrived(MessageData* data)
{
printf("Message arrived: %s\n", data->message->payload);
}
static void mqtt_client_thread(void* pvParameters)
{
printf("mqtt client thread starts\n");
MQTTClient client;
Network network;
unsigned char sendbuf[80], readbuf[80] = {0};
int rc = 0, count = 0;
MQTTPacket_connectData connectData = MQTTPacket_connectData_initializer;
pvParameters = 0;
NetworkInit(&network);
MQTTClientInit(&client, &network, 30000, sendbuf, sizeof(sendbuf), readbuf, sizeof(readbuf));
char* address = MQTT_BROKER;
if ((rc = NetworkConnect(&network, address, MQTT_PORT)) != 0) {
printf("Return code from network connect is %d\n", rc);
}
#if defined(MQTT_TASK)
if ((rc = MQTTStartTask(&client)) != pdPASS) {
printf("Return code from start tasks is %d\n", rc);
} else {
printf("Use MQTTStartTask\n");
}
#endif
connectData.MQTTVersion = 3;
connectData.clientID.cstring = "ESP8266_sample";
if ((rc = MQTTConnect(&client, &connectData)) != 0) {
printf("Return code from MQTT connect is %d\n", rc);
} else {
printf("MQTT Connected\n");
}
if ((rc = MQTTSubscribe(&client, "ESP8266/sample/sub", 2, messageArrived)) != 0) {
printf("Return code from MQTT subscribe is %d\n", rc);
} else {
printf("MQTT subscribe to topic \"ESP8266/sample/sub\"\n");
}
while (++count) {
MQTTMessage message;
char payload[30];
message.qos = QOS2;
message.retained = 0;
message.payload = payload;
sprintf(payload, "message number %d", count);
message.payloadlen = strlen(payload);
if ((rc = MQTTPublish(&client, "ESP8266/sample/pub", &message)) != 0) {
printf("Return code from MQTT publish is %d\n", rc);
} else {
printf("MQTT publish topic \"ESP8266/sample/pub\", message number is %d\n", count);
}
vTaskDelay(1000 / portTICK_RATE_MS); //send every 1 seconds
}
printf("mqtt_client_thread going to be deleted\n");
vTaskDelete(NULL);
return;
}
void user_conn_init(void)
{
int ret;
ret = xTaskCreate(mqtt_client_thread,
MQTT_CLIENT_THREAD_NAME,
MQTT_CLIENT_THREAD_STACK_WORDS,
NULL,
MQTT_CLIENT_THREAD_PRIO,
&mqttc_client_handle);
if (ret != pdPASS) {
printf("mqtt create client thread %s failed\n", MQTT_CLIENT_THREAD_NAME);
}
}