connect via MQTTS

Signed-off-by: Peter Siegmund <developer@mars3142.org>

firmware/components/message-manager/CMakeLists.txt

@@ -3,4 +3,6 @@ idf_component_register(
     INCLUDE_DIRS "include"
     PRIV_REQUIRES 
         persistence-manager
+        my_mqtt_client
+        app_update
 )

firmware/components/message-manager/src/message_manager.c

@@ -1,9 +1,14 @@
 #include "message_manager.h"
+#include "my_mqtt_client.h"
+#include <esp_app_desc.h>
 #include <esp_log.h>
+#include <esp_mac.h>
+#include <esp_system.h>
 #include <freertos/FreeRTOS.h>
 #include <freertos/queue.h>
 #include <freertos/task.h>
 #include <persistence_manager.h>
+#include <sdkconfig.h>
 #include <string.h>
 
 #define MESSAGE_QUEUE_LENGTH 16
@@ -98,6 +103,15 @@ static void message_manager_task(void *param)
                     message_listeners[i](&msg);
                 }
             }
+
+            uint8_t mac[6];
+            esp_read_mac(mac, ESP_MAC_WIFI_STA);
+            const esp_app_desc_t *app_desc = esp_app_get_description();
+            char topic[60];
+            snprintf(topic, sizeof(topic), "device/%s/%02x%02x", app_desc->project_name, mac[4], mac[5]);
+
+            char *data = "{\"key\":\"value\"}";
+            mqtt_client_publish(topic, data, strlen(data), 0, false);
         }
     }
 }

firmware/components/my_mqtt_client/CMakeLists.txt

@@ -0,0 +1,7 @@
+idf_component_register(
+    SRCS "src/my_mqtt_client.c"
+    INCLUDE_DIRS "include"
+    REQUIRES 
+        mqtt
+        app_update
+)

firmware/components/my_mqtt_client/Kconfig

@@ -0,0 +1,21 @@
+menu "MQTT Client Settings"
+
+config MQTT_CLIENT_BROKER_URL
+    string "MQTT Broker URL (TLS)"
+    default "mqtts://example.com:8883"
+    help
+        Die Adresse des MQTT-Brokers (z.B. mqtts://broker.example.com:8883)
+
+config MQTT_CLIENT_USERNAME
+    string "MQTT Username"
+    default "user"
+    help
+        Benutzername für die Authentifizierung (optional)
+
+config MQTT_CLIENT_PASSWORD
+    string "MQTT Password"
+    default "password"
+    help
+        Passwort für die Authentifizierung (optional)
+
+endmenu

firmware/components/my_mqtt_client/README.md

@@ -0,0 +1,18 @@
+# MQTT Client Component for ESP-IDF
+
+Diese Komponente stellt eine einfache MQTT-Client-Implementierung bereit, die Daten an einen TLS-gesicherten MQTT-Broker sendet.
+
+## Dateien
+- mqtt_client.c: Implementierung des MQTT-Clients
+- mqtt_client.h: Header-Datei
+- CMakeLists.txt: Build-Konfiguration
+- Kconfig: Konfiguration für die Komponente
+
+## Abhängigkeiten
+- ESP-IDF (empfohlen: >= v4.0)
+- Komponenten: esp-mqtt, esp-tls
+
+## Nutzung
+1. Füge die Komponente in dein Projekt ein.
+2. Passe die Konfiguration in `Kconfig` an.
+3. Binde die Komponente in deinem Code ein und nutze die API aus `mqtt_client.h`.

firmware/components/my_mqtt_client/idf_component.yml

@@ -0,0 +1,2 @@
+dependencies:
+  espressif/mqtt: ^1.0.0

firmware/components/my_mqtt_client/include/my_mqtt_client.h

@@ -0,0 +1,14 @@
+#pragma once
+#include <stdbool.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void mqtt_client_start(void);
+void mqtt_client_publish(const char *topic, const char *data, size_t len, int qos, bool retain);
+
+#ifdef __cplusplus
+}
+#endif

firmware/components/my_mqtt_client/src/my_mqtt_client.c

@@ -0,0 +1,122 @@
+#include "my_mqtt_client.h"
+#include "esp_app_desc.h"
+#include "esp_err.h"
+#include "esp_interface.h"
+#include "esp_log.h"
+#include "esp_mac.h"
+#include "esp_system.h"
+#include "mqtt_client.h"
+#include "sdkconfig.h"
+
+static const char *TAG = "mqtt_client";
+static esp_mqtt_client_handle_t client = NULL;
+
+extern const uint8_t isrgrootx1_pem_start[] asm("_binary_isrgrootx1_pem_start");
+extern const uint8_t isrgrootx1_pem_end[] asm("_binary_isrgrootx1_pem_end");
+
+static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
+{
+    esp_mqtt_event_handle_t event = event_data;
+    int msg_id;
+
+    switch ((esp_mqtt_event_id_t)event_id)
+    {
+    case MQTT_EVENT_CONNECTED:
+        ESP_LOGI(TAG, "MQTT_EVENT_CONNECTED");
+        msg_id = esp_mqtt_client_subscribe(client, "topic/qos0", 0);
+        ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
+        msg_id = esp_mqtt_client_subscribe(client, "topic/qos1", 1);
+        ESP_LOGI(TAG, "sent subscribe successful, msg_id=%d", msg_id);
+        msg_id = esp_mqtt_client_unsubscribe(client, "topic/qos1");
+        ESP_LOGI(TAG, "sent unsubscribe successful, msg_id=%d", msg_id);
+        break;
+
+    case MQTT_EVENT_DISCONNECTED:
+        ESP_LOGI(TAG, "MQTT_EVENT_DISCONNECTED");
+        break;
+
+    case MQTT_EVENT_SUBSCRIBED:
+        ESP_LOGI(TAG, "MQTT_EVENT_SUBSCRIBED, msg_id=%d, return code=0x%02x ", event->msg_id, (uint8_t)*event->data);
+        msg_id = esp_mqtt_client_publish(client, "topic/qos0", "data", 0, 0, 0);
+        ESP_LOGI(TAG, "sent publish successful, msg_id=%d", msg_id);
+        break;
+
+    case MQTT_EVENT_UNSUBSCRIBED:
+        ESP_LOGI(TAG, "MQTT_EVENT_UNSUBSCRIBED, msg_id=%d", event->msg_id);
+        break;
+
+    case MQTT_EVENT_PUBLISHED:
+        ESP_LOGI(TAG, "MQTT_EVENT_PUBLISHED, msg_id=%d", event->msg_id);
+        break;
+
+    case MQTT_EVENT_DATA:
+        ESP_LOGI(TAG, "MQTT_EVENT_DATA:");
+        ESP_LOGI(TAG, "TOPIC=%.*s\r\n", event->topic_len, event->topic);
+        ESP_LOGI(TAG, "DATA=%.*s\r\n", event->data_len, event->data);
+        break;
+
+    case MQTT_EVENT_ERROR:
+        ESP_LOGE(TAG, "MQTT_EVENT_ERROR");
+        if (event->error_handle)
+        {
+            ESP_LOGE(TAG, "error_type: %d", event->error_handle->error_type);
+            ESP_LOGE(TAG, "esp-tls error code: 0x%x", event->error_handle->esp_tls_last_esp_err);
+            ESP_LOGE(TAG, "tls_stack_err: 0x%x", event->error_handle->esp_tls_stack_err);
+            ESP_LOGE(TAG, "transport_sock_errno: %d", event->error_handle->esp_transport_sock_errno);
+        }
+        break;
+
+    default:
+        ESP_LOGI(TAG, "Other event id:%d", event->event_id);
+        break;
+    }
+}
+
+void mqtt_client_start(void)
+{
+    ESP_LOGI(TAG, "Starte MQTT-Client mit URI: %s", CONFIG_MQTT_CLIENT_BROKER_URL);
+
+    uint8_t mac[6];
+    esp_read_mac(mac, ESP_MAC_WIFI_STA);
+    const esp_app_desc_t *app_desc = esp_app_get_description();
+    char client_id[60];
+    snprintf(client_id, sizeof(client_id), "%s/%02x%02x", app_desc->project_name, mac[4], mac[5]);
+
+    const esp_mqtt_client_config_t mqtt_cfg = {
+        .broker.address.uri = CONFIG_MQTT_CLIENT_BROKER_URL,
+        .broker.verification.certificate = (const char *)isrgrootx1_pem_start,
+        .broker.verification.certificate_len = isrgrootx1_pem_end - isrgrootx1_pem_start,
+        .credentials.username = CONFIG_MQTT_CLIENT_USERNAME,
+        .credentials.client_id = client_id,
+        .credentials.authentication.password = CONFIG_MQTT_CLIENT_PASSWORD,
+    };
+    client = esp_mqtt_client_init(&mqtt_cfg);
+    if (client == NULL)
+    {
+        ESP_LOGE(TAG, "Fehler bei esp_mqtt_client_init!");
+        return;
+    }
+    esp_mqtt_client_register_event(client, ESP_EVENT_ANY_ID, mqtt_event_handler, NULL);
+    esp_err_t err = esp_mqtt_client_start(client);
+    if (err != ESP_OK)
+    {
+        ESP_LOGE(TAG, "esp_mqtt_client_start fehlgeschlagen: %s", esp_err_to_name(err));
+    }
+    else
+    {
+        ESP_LOGI(TAG, "MQTT-Client gestartet");
+    }
+}
+
+void mqtt_client_publish(const char *topic, const char *data, size_t len, int qos, bool retain)
+{
+    if (client)
+    {
+        int msg_id = esp_mqtt_client_publish(client, topic, data, len, qos, retain);
+        ESP_LOGI(TAG, "Publish: topic=%s, msg_id=%d, qos=%d, retain=%d, len=%d", topic, msg_id, qos, retain, (int)len);
+    }
+    else
+    {
+        ESP_LOGW(TAG, "Publish aufgerufen, aber Client ist nicht initialisiert!");
+    }
+}

firmware/components/simulator/src/simulator.cpp

@@ -372,7 +372,8 @@ void start_simulation_task(void)
 {
     stop_simulation_task();
 
-    simulation_config_t *config = (simulation_config_t *)heap_caps_malloc(sizeof(simulation_config_t), 0);
+    simulation_config_t *config =
+        (simulation_config_t *)heap_caps_malloc(sizeof(simulation_config_t), MALLOC_CAP_DEFAULT);
     if (config == NULL)
     {
         ESP_LOGE(TAG, "Failed to allocate memory for simulation config.");