141 lines
4.5 KiB
C
141 lines
4.5 KiB
C
/* MQTT over SSL Example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <stddef.h>
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#include <string.h>
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#include "esp_wifi.h"
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#include "esp_system.h"
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#include "nvs_flash.h"
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#include "esp_event.h"
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#include "tcpip_adapter.h"
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#include "protocol_examples_common.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/semphr.h"
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#include "freertos/queue.h"
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#include "lwip/sockets.h"
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#include "lwip/dns.h"
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#include "lwip/netdb.h"
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#include "esp_log.h"
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#include "mqtt_client.h"
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#include "esp_tls.h"
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/*
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* Add here URI of mqtt broker which supports PSK authentication
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*/
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#define EXAMPLE_BROKER_URI "mqtts://192.168.0.2"
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static const char *TAG = "MQTTS_EXAMPLE";
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/*
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* Define psk key and hint as defined in mqtt broker
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* example for mosquitto server, content of psk_file:
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* hint:BAD123
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*
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*/
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static const uint8_t s_key[] = { 0xBA, 0xD1, 0x23 };
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static const psk_hint_key_t psk_hint_key = {
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.key = s_key,
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.key_size = sizeof(s_key),
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.hint = "hint"
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};
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static esp_err_t mqtt_event_handler(esp_mqtt_event_handle_t event)
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{
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esp_mqtt_client_handle_t client = event->client;
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int msg_id;
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// your_context_t *context = event->context;
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switch (event->event_id) {
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case MQTT_EVENT_CONNECTED:
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ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
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msg_id = esp_mqtt_client_subscribe(client, "/topic/qos0", 0);
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ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
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msg_id = esp_mqtt_client_subscribe(client, "/topic/qos1", 1);
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ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
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msg_id = esp_mqtt_client_unsubscribe(client, "/topic/qos1");
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ESP_LOGI(TAG, "sent unsubscribe successful, msg_id=%d", msg_id);
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break;
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case MQTT_EVENT_DISCONNECTED:
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ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
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break;
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case MQTT_EVENT_SUBSCRIBED:
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ESP_LOGI(TAG, "MQTT_EVENT_SUBSCRIBED, msg_id=%d", event->msg_id);
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msg_id = esp_mqtt_client_publish(client, "/topic/qos0", "data", 0, 0, 0);
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ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
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break;
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case MQTT_EVENT_UNSUBSCRIBED:
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ESP_LOGI(TAG, "MQTT_EVENT_UNSUBSCRIBED, msg_id=%d", event->msg_id);
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break;
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case MQTT_EVENT_PUBLISHED:
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ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id);
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break;
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case MQTT_EVENT_DATA:
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ESP_LOGI(TAG, "MQTT_EVENT_DATA");
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printf("TOPIC=%.*s\r\n", event->topic_len, event->topic);
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printf("DATA=%.*s\r\n", event->data_len, event->data);
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break;
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case MQTT_EVENT_ERROR:
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ESP_LOGI(TAG, "MQTT_EVENT_ERROR");
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break;
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default:
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ESP_LOGI(TAG, "Other event id:%d", event->event_id);
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break;
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}
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return ESP_OK;
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}
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static void mqtt_app_start(void)
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{
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const esp_mqtt_client_config_t mqtt_cfg = {
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.uri = EXAMPLE_BROKER_URI,
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.event_handle = mqtt_event_handler,
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.psk_hint_key = &psk_hint_key,
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};
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ESP_LOGI(TAG, "[APP] Free memory: %d bytes", esp_get_free_heap_size());
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esp_mqtt_client_handle_t client = esp_mqtt_client_init(&mqtt_cfg);
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esp_mqtt_client_start(client);
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}
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void app_main(void)
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{
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ESP_LOGI(TAG, "[APP] Startup..");
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ESP_LOGI(TAG, "[APP] Free memory: %d bytes", esp_get_free_heap_size());
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ESP_LOGI(TAG, "[APP] IDF version: %s", esp_get_idf_version());
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esp_log_level_set("*", ESP_LOG_INFO);
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esp_log_level_set("MQTT_CLIENT", ESP_LOG_VERBOSE);
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esp_log_level_set("TRANSPORT_TCP", ESP_LOG_VERBOSE);
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esp_log_level_set("TRANSPORT_SSL", ESP_LOG_VERBOSE);
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esp_log_level_set("esp-tls", ESP_LOG_VERBOSE);
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esp_log_level_set("TRANSPORT", ESP_LOG_VERBOSE);
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esp_log_level_set("OUTBOX", ESP_LOG_VERBOSE);
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ESP_ERROR_CHECK(nvs_flash_init());
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tcpip_adapter_init();
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ESP_ERROR_CHECK(esp_event_loop_create_default());
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/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
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* Read "Establishing Wi-Fi or Ethernet Connection" section in
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* examples/protocols/README.md for more information about this function.
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*/
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ESP_ERROR_CHECK(example_connect());
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mqtt_app_start();
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}
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