mirror of
https://github.com/alexandrebobkov/ESP-Nodes.git
synced 2025-08-08 12:11:00 +00:00
187 lines
7.7 KiB
C
187 lines
7.7 KiB
C
/* MQTT over self-signed SSL
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Date: June 14, 2025
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Adapted by: Alexander Bobkov
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ESP-IDF: v5.4.1
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Subscribes to the temperature topic using SSL
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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_system.h"
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#include "esp_partition.h"
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#include "nvs_flash.h"
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#include "esp_event.h"
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#include "esp_netif.h"
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#include "protocol_examples_common.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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#include "esp_ota_ops.h"
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#include <sys/param.h>
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static const char *TAG = "mqtts_example";
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#if CONFIG_BROKER_CERTIFICATE_OVERRIDDEN == 1
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static const uint8_t mqtt_eclipseprojects_io_pem_start[] =
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"-----BEGIN CERTIFICATE-----
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MIIDFTCCAf2gAwIBAgIUUcFs7KhvOW1uc1ZV/88AtEafX4UwDQYJKoZIhvcNAQEL
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BQAwGjEYMBYGA1UEAwwPdGVjaHF1YWRiaXQubmV0MB4XDTI1MDYxMzIwMjYzOFoX
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DTI2MDYxMzIwMjYzOFowGjEYMBYGA1UEAwwPdGVjaHF1YWRiaXQubmV0MIIBIjAN
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BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqwXyY95ffB1Zfys3D9b0/B2lDysm
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+8aLiBMjRfHHmEQ3X95VsPy4H/mu66FVsrQqxzha1zNQEz1QaYyZ6oXl3FqhN06X
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B1HtVdefZ6rD0ctiYQSjpT64NhnUX83ZBb46Mh6cGTe0L+LYF//nmOi1WAqCRonf
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B5BW/Yd3M52QIB5cGIhH0i2E28577Awc5t0w96uZCmGfqM5gxFIgmy462XExA2+w
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6u7Ud49bk1L3eTYHvWxgen4RGgaEfpsA8e5Q0bRkIL5D3Oc0JW8tdw6Cmvb+/d7d
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BB20TTCMfZ4GYabSS5wp3thmdKe4QW7QJcdAyoNOSWtt51Bhud0DkU+0RwIDAQAB
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o1MwUTAdBgNVHQ4EFgQUY7baZn9x7Hh0WZ9vI1uzEdhRTp4wHwYDVR0jBBgwFoAU
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Y7baZn9x7Hh0WZ9vI1uzEdhRTp4wDwYDVR0TAQH/BAUwAwEB/zANBgkqhkiG9w0B
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AQsFAAOCAQEAWehGGHGobcYGpfczSpshCzmVGwFa+v+FzFYDrMB1LpW6NkipnnFA
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uF8itmhd7pnkayo6xOBvVHb23gsWfAsh/z7KRiIgSACXZjOjFv08A24TXCVMKX2C
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r3zSGjcIqzkp8NHIFBF/ZXsclqQLiEZPAViu9c23wIyutD4RfpekmsVDiQJvP6ei
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5uILJrwT7l46DMes96jYcthWbHiy6wkw1flfT0ykrd3MriYMxLDKimM81n5tVDLa
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bI9JmWpDkPzflY9VGlTZ3QQHuTvI6zQxeaGKSj/7fAP6G0sRMxaSJXD38C/Xpi7p
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f3VJRuf5mqUnbjak+W5VZT5e96AVAyy+5g==
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-----END CERTIFICATE-----\n";
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#else
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extern const uint8_t mqtt_eclipseprojects_io_pem_start[] asm("_binary_mqtt_eclipseprojects_io_pem_start");
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#endif
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extern const uint8_t mqtt_eclipseprojects_io_pem_end[] asm("_binary_mqtt_eclipseprojects_io_pem_end");
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//
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// Note: this function is for testing purposes only publishing part of the active partition
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// (to be checked against the original binary)
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//
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static void send_binary(esp_mqtt_client_handle_t client)
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{
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esp_partition_mmap_handle_t out_handle;
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const void *binary_address;
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const esp_partition_t *partition = esp_ota_get_running_partition();
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esp_partition_mmap(partition, 0, partition->size, ESP_PARTITION_MMAP_DATA, &binary_address, &out_handle);
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// sending only the configured portion of the partition (if it's less than the partition size)
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int binary_size = MIN(CONFIG_BROKER_BIN_SIZE_TO_SEND, partition->size);
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int msg_id = esp_mqtt_client_publish(client, "/topic/binary", binary_address, binary_size, 0, 0);
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ESP_LOGI(TAG, "binary sent with msg_id=%d", msg_id);
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}
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/*
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* @brief Event handler registered to receive MQTT events
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*
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* This function is called by the MQTT client event loop.
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*
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* @param handler_args user data registered to the event.
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* @param base Event base for the handler(always MQTT Base in this example).
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* @param event_id The id for the received event.
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* @param event_data The data for the event, esp_mqtt_event_handle_t.
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*/
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static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
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{
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ESP_LOGD(TAG, "Event dispatched from event loop base=%s, event_id=%" PRIi32, base, event_id);
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esp_mqtt_event_handle_t event = event_data;
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esp_mqtt_client_handle_t client = event->client;
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int msg_id;
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switch ((esp_mqtt_event_id_t)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, "nodes/outdoors/foxie1/sensors/temperature", 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, "nodes/outdoors/foxie1/sensors/temperature", "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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if (strncmp(event->data, "send binary please", event->data_len) == 0) {
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ESP_LOGI(TAG, "Sending the binary");
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send_binary(client);
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}
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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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if (event->error_handle->error_type == MQTT_ERROR_TYPE_TCP_TRANSPORT) {
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ESP_LOGI(TAG, "Last error code reported from esp-tls: 0x%x", event->error_handle->esp_tls_last_esp_err);
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ESP_LOGI(TAG, "Last tls stack error number: 0x%x", event->error_handle->esp_tls_stack_err);
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ESP_LOGI(TAG, "Last captured errno : %d (%s)", event->error_handle->esp_transport_sock_errno,
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strerror(event->error_handle->esp_transport_sock_errno));
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} else if (event->error_handle->error_type == MQTT_ERROR_TYPE_CONNECTION_REFUSED) {
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ESP_LOGI(TAG, "Connection refused error: 0x%x", event->error_handle->connect_return_code);
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} else {
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ESP_LOGW(TAG, "Unknown error type: 0x%x", event->error_handle->error_type);
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}
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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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}
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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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.broker = {
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.address.uri = CONFIG_BROKER_URI,
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//.verification.certificate = (const char *)mqtt_eclipseprojects_io_pem_start
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//.global_ca_store = false
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//.skip_server_verification = true
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},
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};
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ESP_LOGI(TAG, "[APP] Free memory: %" PRIu32 " 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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/* The last argument may be used to pass data to the event handler, in this example mqtt_event_handler */
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esp_mqtt_client_register_event(client, ESP_EVENT_ANY_ID, mqtt_event_handler, NULL);
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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: %" PRIu32 " 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("esp-tls", ESP_LOG_VERBOSE);
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esp_log_level_set("mqtt_client", ESP_LOG_VERBOSE);
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esp_log_level_set("mqtt_example", ESP_LOG_VERBOSE);
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esp_log_level_set("transport_base", 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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ESP_ERROR_CHECK(esp_netif_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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