add vite helper files?

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

.gitignore

@@ -24,3 +24,5 @@
 **/*_front.png
 **/*_schematic*.png
 **/wiki/*
+*.FCBak
+firmware/**/node_modules

firmware/CMakeLists.txt

@@ -1,4 +1,9 @@
 cmake_minimum_required(VERSION 3.5)
 
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+
+idf_build_set_property(BOOTLOADER_EXTRA_COMPONENT_DIRS "${CMAKE_CURRENT_LIST_DIR}/bootloader_components_extra/" APPEND)
+
 project(system_control)
+
+target_add_binary_data(${PROJECT_NAME}.elf "main/isrgrootx1.pem" TEXT)

firmware/bootloader_components/my_boot_hooks/CMakeLists.txt

@@ -0,0 +1,9 @@
+idf_component_register(SRCS "hooks.c"
+                       REQUIRES extra_component)
+
+# We need to force GCC to integrate this static library into the
+# bootloader link. Indeed, by default, as the hooks in the bootloader are weak,
+# the linker would just ignore the symbols in the extra. (i.e. not strictly
+# required)
+# To do so, we need to define the symbol (function) `bootloader_hooks_include`
+# within hooks.c source file.

firmware/bootloader_components/my_boot_hooks/hooks.c

@@ -0,0 +1,21 @@
+#include "esp_log.h"
+
+/* Function used to tell the linker to include this file
+ * with all its symbols.
+ */
+void bootloader_hooks_include(void)
+{
+}
+
+/* Keep in my mind that a lot of functions cannot be called from here
+ * as system initialization has not been performed yet, including
+ * BSS, SPI flash, or memory protection. */
+void bootloader_before_init(void)
+{
+    ESP_LOGI("HOOK", "This hook is called BEFORE bootloader initialization");
+}
+
+void bootloader_after_init(void)
+{
+    ESP_LOGI("HOOK", "This hook is called AFTER bootloader initialization");
+}

firmware/bootloader_components_extra/extra_component/CMakeLists.txt

@@ -0,0 +1 @@
+idf_component_register(SRCS "extra_component.c")

firmware/bootloader_components_extra/extra_component/extra_component.c

@@ -0,0 +1,11 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Unlicense OR CC0-1.0
+ */
+#include "esp_log.h"
+
+void bootloader_extra_dir_function(void)
+{
+    ESP_LOGI("EXTRA", "This function is called from an extra component");
+}

firmware/components/api-server/src/api_handlers.c

@@ -2,14 +2,19 @@
 #include "common.h"
 #include "message_manager.h"
 
+#include "esp_heap_caps.h"
+#include "led_segment.h"
+#include "persistence_manager.h"
+#include "storage.h"
 #include <cJSON.h>
 #include <esp_http_server.h>
 #include <esp_log.h>
 #include <esp_wifi.h>
-#include <persistence_manager.h>
 #include <string.h>
 #include <sys/stat.h>
 
+#define MAX_BODY_SIZE 4096
+
 static const char *TAG = "api_handlers";
 
 // Helper function to set CORS headers
@@ -59,7 +64,7 @@ esp_err_t api_capabilities_get_handler(httpd_req_t *req)
 {
     ESP_LOGI(TAG, "GET /api/capabilities");
 
-    // Thread nur für esp32c6 oder esp32h2 verfügbar
+    // Thread only available for esp32c6 or esp32h2
     bool thread = false;
 #if defined(CONFIG_IDF_TARGET_ESP32C6) || defined(CONFIG_IDF_TARGET_ESP32H2)
     thread = true;
@@ -90,7 +95,7 @@ esp_err_t api_wifi_scan_handler(httpd_req_t *req)
 
     uint16_t ap_num = 0;
     esp_wifi_scan_get_ap_num(&ap_num);
-    wifi_ap_record_t *ap_list = calloc(ap_num, sizeof(wifi_ap_record_t));
+    wifi_ap_record_t *ap_list = heap_caps_calloc(ap_num, sizeof(wifi_ap_record_t), MALLOC_CAP_DEFAULT);
     if (!ap_list)
     {
         return send_error_response(req, 500, "Memory allocation failed");
@@ -159,7 +164,7 @@ esp_err_t api_wifi_config_handler(httpd_req_t *req)
         if (is_valid(pw))
         {
             size_t pwlen = strlen(pw->valuestring);
-            char *masked = malloc(pwlen + 1);
+            char *masked = heap_caps_malloc(pwlen + 1, MALLOC_CAP_DEFAULT);
             if (masked)
             {
                 memset(masked, '*', pwlen);
@@ -333,7 +338,7 @@ esp_err_t api_light_mode_handler(httpd_req_t *req)
             }
             else
             {
-                msg.data.settings.value.int_value = -1; // Unbekannter Modus
+                msg.data.settings.value.int_value = -1; // Unknown mode
             }
             message_manager_post(&msg, pdMS_TO_TICKS(100));
         }
@@ -400,31 +405,113 @@ esp_err_t api_wled_config_get_handler(httpd_req_t *req)
 {
     ESP_LOGI(TAG, "GET /api/wled/config");
 
-    // TODO: Implement actual LED config retrieval
+    extern led_segment_t segments[LED_SEGMENT_MAX_LEN];
-    const char *response = "{"
+    extern size_t segment_count;
-                           "\"segments\":["
+    size_t required_size = sizeof(segments) * segment_count;
-                           "{\"name\":\"Main Light\",\"start\":0,\"leds\":60},"
+
-                           "{\"name\":\"Accent Light\",\"start\":60,\"leds\":30}"
+    cJSON *json = cJSON_CreateObject();
-                           "]"
+
-                           "}";
+    persistence_manager_t pm;
-    return send_json_response(req, response);
+    if (persistence_manager_init(&pm, "led_config") == ESP_OK)
+    {
+        persistence_manager_get_blob(&pm, "segments", segments, required_size, NULL);
+        uint8_t segment_count = persistence_manager_get_int(&pm, "segment_count", 0);
+        persistence_manager_deinit(&pm);
+
+        cJSON *segments_arr = cJSON_CreateArray();
+        for (uint8_t i = 0; i < segment_count; ++i)
+        {
+            cJSON *seg = cJSON_CreateObject();
+            cJSON_AddStringToObject(seg, "name", segments[i].name);
+            cJSON_AddNumberToObject(seg, "start", segments[i].start);
+            cJSON_AddNumberToObject(seg, "leds", segments[i].leds);
+            cJSON_AddItemToArray(segments_arr, seg);
+        }
+        cJSON_AddItemToObject(json, "segments", segments_arr);
+    }
+    else
+    {
+        cJSON_AddItemToObject(json, "segments", cJSON_CreateArray());
+    }
+
+    char *response = cJSON_PrintUnformatted(json);
+    cJSON_Delete(json);
+    esp_err_t res = send_json_response(req, response);
+    free(response);
+    return res;
 }
 
 esp_err_t api_wled_config_post_handler(httpd_req_t *req)
 {
     ESP_LOGI(TAG, "POST /api/wled/config");
 
-    char buf[512];
+    char *buf = heap_caps_malloc(MAX_BODY_SIZE, MALLOC_CAP_DEFAULT);
-    int ret = httpd_req_recv(req, buf, sizeof(buf) - 1);
+    if (!buf)
-    if (ret <= 0)
+        return send_error_response(req, 500, "Memory allocation failed");
+    int total = 0, ret;
+    while (total < MAX_BODY_SIZE - 1)
     {
-        return send_error_response(req, 400, "Failed to receive request body");
+        ret = httpd_req_recv(req, buf + total, MAX_BODY_SIZE - 1 - total);
+        if (ret <= 0)
+            break;
+        total += ret;
     }
-    buf[ret] = '\0';
+    buf[total] = '\0';
 
     ESP_LOGI(TAG, "Received WLED config: %s", buf);
 
-    // TODO: Parse JSON and save LED configuration
+    cJSON *json = cJSON_Parse(buf);
+    free(buf);
+
+    if (!json)
+    {
+        return send_error_response(req, 400, "Invalid JSON");
+    }
+
+    cJSON *segments_arr = cJSON_GetObjectItem(json, "segments");
+    if (!cJSON_IsArray(segments_arr))
+    {
+        cJSON_Delete(json);
+        return send_error_response(req, 400, "Missing segments array");
+    }
+
+    extern led_segment_t segments[LED_SEGMENT_MAX_LEN];
+    extern size_t segment_count;
+    size_t count = cJSON_GetArraySize(segments_arr);
+    if (count > LED_SEGMENT_MAX_LEN)
+        count = LED_SEGMENT_MAX_LEN;
+    segment_count = count;
+    for (size_t i = 0; i < LED_SEGMENT_MAX_LEN; ++i)
+    {
+        cJSON *seg = cJSON_GetArrayItem(segments_arr, i);
+        cJSON *name = cJSON_GetObjectItem(seg, "name");
+        cJSON *start = cJSON_GetObjectItem(seg, "start");
+        cJSON *leds = cJSON_GetObjectItem(seg, "leds");
+        if (cJSON_IsString(name) && cJSON_IsNumber(start) && cJSON_IsNumber(leds) && i < count)
+        {
+            strncpy(segments[i].name, name->valuestring, sizeof(segments[i].name) - 1);
+            segments[i].name[sizeof(segments[i].name) - 1] = '\0';
+            segments[i].start = (uint16_t)start->valuedouble;
+            segments[i].leds = (uint16_t)leds->valuedouble;
+        }
+        else
+        {
+            // Invalid entry, skip or set defaults
+            segments[i].name[0] = '\0';
+            segments[i].start = 0;
+            segments[i].leds = 0;
+        }
+    }
+    cJSON_Delete(json);
+
+    persistence_manager_t pm;
+    if (persistence_manager_init(&pm, "led_config") == ESP_OK)
+    {
+        persistence_manager_set_blob(&pm, "segments", segments, sizeof(led_segment_t) * segment_count);
+        persistence_manager_set_int(&pm, "segment_count", (int32_t)segment_count);
+        persistence_manager_deinit(&pm);
+    }
+
     set_cors_headers(req);
     return httpd_resp_sendstr(req, "{\"status\":\"ok\"}");
 }
@@ -432,6 +519,16 @@ esp_err_t api_wled_config_post_handler(httpd_req_t *req)
 // ============================================================================
 // Schema API
 // ============================================================================
+static char *heap_caps_strdup(const char *src, uint32_t caps)
+{
+    if (!src)
+        return NULL;
+    size_t len = strlen(src) + 1;
+    char *dst = heap_caps_malloc(len, caps);
+    if (dst)
+        memcpy(dst, src, len);
+    return dst;
+}
 
 esp_err_t api_schema_get_handler(httpd_req_t *req)
 {
@@ -448,13 +545,11 @@ esp_err_t api_schema_get_handler(httpd_req_t *req)
 
     ESP_LOGI(TAG, "Requested schema: %s", filename);
 
-    // Schema-Datei lesen
+    // Read schema file
     char path[128];
     snprintf(path, sizeof(path), "%s", filename);
 
     int line_count = 0;
-    extern char **read_lines_filtered(const char *filename, int *out_count);
-    extern void free_lines(char **lines, int count);
     char **lines = read_lines_filtered(path, &line_count);
 
     set_cors_headers(req);
@@ -465,11 +560,11 @@ esp_err_t api_schema_get_handler(httpd_req_t *req)
         return httpd_resp_sendstr(req, "");
     }
 
-    // Gesamtlänge berechnen
+    // Calculate total length
     size_t total_len = 0;
     for (int i = 0; i < line_count; ++i)
         total_len += strlen(lines[i]) + 1;
-    char *csv = malloc(total_len + 1);
+    char *csv = heap_caps_malloc(total_len + 1, MALLOC_CAP_DEFAULT);
     char *p = csv;
     for (int i = 0; i < line_count; ++i)
     {
@@ -490,26 +585,75 @@ esp_err_t api_schema_post_handler(httpd_req_t *req)
     ESP_LOGI(TAG, "POST /api/schema/*");
 
     // Extract filename from URI
-    const char *uri = req->uri;
+    if (!req)
-    const char *filename = strrchr(uri, '/');
-    if (filename == NULL)
     {
+        ESP_LOGE(TAG, "Request pointer is NULL");
+        return send_error_response(req, 500, "Internal error: req is NULL");
+    }
+    const char *uri = req->uri;
+    ESP_LOGI(TAG, "Request URI: %s", uri ? uri : "(null)");
+    if (!uri)
+    {
+        ESP_LOGE(TAG, "Request URI is NULL");
+        return send_error_response(req, 400, "Invalid schema path (no URI)");
+    }
+    const char *filename = strrchr(uri, '/');
+    if (filename == NULL || filename[1] == '\0')
+    {
+        ESP_LOGE(TAG, "Could not extract filename from URI: %s", uri);
         return send_error_response(req, 400, "Invalid schema path");
     }
     filename++;
+    ESP_LOGI(TAG, "Extracted filename: %s", filename);
 
-    char buf[2048];
+    // Dynamically read POST body (like api_wled_config_post_handler)
-    int ret = httpd_req_recv(req, buf, sizeof(buf) - 1);
+    char *buf = heap_caps_malloc(MAX_BODY_SIZE, MALLOC_CAP_DEFAULT);
-    if (ret <= 0)
+    if (!buf)
     {
-        return send_error_response(req, 400, "Failed to receive request body");
+        ESP_LOGE(TAG, "Memory allocation failed for POST body");
+        return send_error_response(req, 500, "Memory allocation failed");
     }
-    buf[ret] = '\0';
+    int total = 0, ret;
+    while (total < MAX_BODY_SIZE - 1)
+    {
+        ret = httpd_req_recv(req, buf + total, MAX_BODY_SIZE - 1 - total);
+        if (ret <= 0)
+            break;
+        total += ret;
+    }
+    buf[total] = '\0';
 
-    ESP_LOGI(TAG, "Saving schema %s, size: %d bytes", filename, ret);
+    ESP_LOGI(TAG, "Saving schema %s, size: %d bytes", filename, total);
 
-    // TODO: Save schema to storage
+    // Split CSV body into line array
+    int line_count = 0;
+    // Count lines
+    for (int i = 0; i < total; ++i)
+        if (buf[i] == '\n')
+            line_count++;
+    if (total > 0 && buf[total - 1] != '\n')
+        line_count++; // last line without \n
+
+    char **lines = (char **)heap_caps_malloc(line_count * sizeof(char *), MALLOC_CAP_DEFAULT);
+    int idx = 0;
+    char *saveptr = NULL;
+    char *line = strtok_r(buf, "\n", &saveptr);
+    while (line && idx < line_count)
+    {
+        // Ignore empty lines
+        if (line[0] != '\0')
+            lines[idx++] = heap_caps_strdup(line, MALLOC_CAP_DEFAULT);
+        line = strtok_r(NULL, "\n", &saveptr);
+    }
+    int actual_count = idx;
+    esp_err_t err = write_lines(filename, lines, actual_count);
+    for (int i = 0; i < actual_count; ++i)
+        free(lines[i]);
+    free(lines);
     set_cors_headers(req);
+
+    if (err != ESP_OK)
+        return send_error_response(req, 500, "Failed to save schema");
     return httpd_resp_sendstr(req, "{\"status\":\"ok\"}");
 }
 
@@ -817,7 +961,7 @@ esp_err_t api_captive_portal_handler(httpd_req_t *req)
 {
     ESP_LOGI(TAG, "Captive portal detection: %s", req->uri);
 
-    // captive.html direkt ausliefern (Status 200, text/html)
+    // Serve captive.html directly (status 200, text/html)
     const char *base_path = CONFIG_API_SERVER_STATIC_FILES_PATH;
     char filepath[256];
     snprintf(filepath, sizeof(filepath), "%s/captive.html", base_path);
@@ -826,7 +970,7 @@ esp_err_t api_captive_portal_handler(httpd_req_t *req)
     {
         ESP_LOGE(TAG, "captive.html not found: %s", filepath);
         httpd_resp_set_status(req, "500 Internal Server Error");
-        httpd_resp_sendstr(req, "Captive Portal nicht verfügbar");
+        httpd_resp_sendstr(req, "Captive portal not available");
         return ESP_FAIL;
     }
     httpd_resp_set_type(req, "text/html");

firmware/components/led-manager/include/led_segment.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+#define LED_SEGMENT_MAX_LEN 15
+
+typedef struct
+{
+    char name[32];
+    uint16_t start;
+    uint16_t leds;
+} led_segment_t;
+
+led_segment_t segments[LED_SEGMENT_MAX_LEN];
+size_t segment_count;

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/persistence-manager/include/persistence_manager.h

@@ -205,6 +205,33 @@ extern "C"
     void persistence_manager_get_string(const persistence_manager_t *pm, const char *key, char *out_value,
                                         size_t max_len, const char *default_value);
 
+    /**
+     * @brief Set a blob (binary data) value for a key in NVS storage.
+     *
+     * This function stores arbitrary binary data under the given key.
+     *
+     * @param pm Pointer to the persistence manager structure.
+     * @param key Key to set.
+     * @param value Pointer to the data to store.
+     * @param length Length of the data in bytes.
+     */
+    void persistence_manager_set_blob(persistence_manager_t *pm, const char *key, const void *value, size_t length);
+
+    /**
+     * @brief Get a blob (binary data) value for a key from NVS storage.
+     *
+     * This function retrieves binary data previously stored under the given key.
+     *
+     * @param pm Pointer to the persistence manager structure.
+     * @param key Key to retrieve.
+     * @param out_value Buffer to store the retrieved data.
+     * @param max_length Maximum length of the output buffer in bytes.
+     * @param out_length Pointer to variable to receive the actual data length.
+     * @return true if the blob was found and read successfully, false otherwise.
+     */
+    bool persistence_manager_get_blob(const persistence_manager_t *pm, const char *key, void *out_value,
+                                      size_t max_length, size_t *out_length);
+
 #ifdef __cplusplus
 }
 #endif

firmware/components/persistence-manager/src/persistence_manager.c

@@ -1,4 +1,3 @@
-
 #include "persistence_manager.h"
 #include <esp_log.h>
 #include <string.h>
@@ -174,6 +173,17 @@ void persistence_manager_set_string(persistence_manager_t *pm, const char *key,
     }
 }
 
+void persistence_manager_set_blob(persistence_manager_t *pm, const char *key, const void *value, size_t length)
+{
+    if (!persistence_manager_is_initialized(pm) || !value || length == 0)
+        return;
+    esp_err_t err = nvs_set_blob(pm->nvs_handle, key, value, length);
+    if (err != ESP_OK)
+    {
+        ESP_LOGE(TAG, "Failed to set blob key '%s': %s", key, esp_err_to_name(err));
+    }
+}
+
 bool persistence_manager_get_bool(const persistence_manager_t *pm, const char *key, bool default_value)
 {
     if (!persistence_manager_is_initialized(pm))
@@ -245,3 +255,20 @@ void persistence_manager_get_string(const persistence_manager_t *pm, const char
         return;
     }
 }
+
+bool persistence_manager_get_blob(const persistence_manager_t *pm, const char *key, void *out_value, size_t max_length,
+                                  size_t *out_length)
+{
+    if (!persistence_manager_is_initialized(pm) || !out_value || max_length == 0)
+        return false;
+    size_t required_size = 0;
+    esp_err_t err = nvs_get_blob(pm->nvs_handle, key, NULL, &required_size);
+    if (err != ESP_OK || required_size == 0 || required_size > max_length)
+        return false;
+    err = nvs_get_blob(pm->nvs_handle, key, out_value, &required_size);
+    if (err != ESP_OK)
+        return false;
+    if (out_length)
+        *out_length = required_size;
+    return true;
+}

firmware/components/simulator/include/storage.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include "esp_err.h"
+
 #ifdef __cplusplus
 extern "C"
 {
@@ -8,6 +10,14 @@ extern "C"
     void load_file(const char *filename);
     char **read_lines_filtered(const char *filename, int *out_count);
     void free_lines(char **lines, int count);
+    /**
+     * Write an array of lines to a file (CSV or other text).
+     * @param filename File name (without /spiffs/)
+     * @param lines Array of lines (null-terminated strings)
+     * @param count Number of lines
+     * @return ESP_OK on success, error code otherwise
+     */
+    esp_err_t write_lines(const char *filename, char **lines, int count);
 #ifdef __cplusplus
 }
 #endif

firmware/components/simulator/src/simulator.cpp

@@ -82,10 +82,10 @@ esp_err_t add_light_item(const char time[5], uint8_t red, uint8_t green, uint8_t
                          uint8_t brightness, uint8_t saturation)
 {
     // Allocate memory for a new node in PSRAM.
-    light_item_node_t *new_node = (light_item_node_t *)heap_caps_malloc(sizeof(light_item_node_t), MALLOC_CAP_SPIRAM);
+    light_item_node_t *new_node = (light_item_node_t *)heap_caps_malloc(sizeof(light_item_node_t), MALLOC_CAP_DEFAULT);
     if (new_node == NULL)
     {
-        ESP_LOGE(TAG, "Failed to allocate memory in PSRAM for new light_item_node_t.");
+        ESP_LOGE(TAG, "Failed to allocate memory for new light_item_node_t.");
         return ESP_FAIL;
     }
 
@@ -373,7 +373,7 @@ void start_simulation_task(void)
     stop_simulation_task();
 
     simulation_config_t *config =
-        (simulation_config_t *)heap_caps_malloc(sizeof(simulation_config_t), MALLOC_CAP_SPIRAM);
+        (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.");

firmware/components/simulator/src/storage.cpp

@@ -130,3 +130,27 @@ void free_lines(char **lines, int count)
         free(lines[i]);
     free(lines);
 }
+
+esp_err_t write_lines(const char *filename, char **lines, int count)
+{
+    char fullpath[128];
+    snprintf(fullpath, sizeof(fullpath), "/spiffs/%s", filename[0] == '/' ? filename + 1 : filename);
+    FILE *f = fopen(fullpath, "w");
+    if (!f)
+    {
+        ESP_LOGE(TAG, "Failed to open file for writing: %s", fullpath);
+        return ESP_FAIL;
+    }
+    for (int i = 0; i < count; ++i)
+    {
+        if (fprintf(f, "%s\n", lines[i]) < 0)
+        {
+            ESP_LOGE(TAG, "Failed to write line %d", i);
+            fclose(f);
+            return ESP_FAIL;
+        }
+    }
+    fclose(f);
+    ESP_LOGI(TAG, "Wrote %d lines to %s", count, fullpath);
+    return ESP_OK;
+}

firmware/main/CMakeLists.txt

@@ -1,10 +1,10 @@
 idf_component_register(SRCS 
-        main.cpp
+        src/main.cpp
-        app_task.cpp
+        src/app_task.cpp
-        button_handling.c
+        src/button_handling.c
-        i2c_checker.c
+        src/i2c_checker.c
-        hal/u8g2_esp32_hal.c
+        src/hal/u8g2_esp32_hal.c
-    INCLUDE_DIRS "."
+    INCLUDE_DIRS "include"
     PRIV_REQUIRES
         analytics
         insa
@@ -21,6 +21,7 @@ idf_component_register(SRCS
         app_update
         rmaker_common
         driver
+        my_mqtt_client
 )
 
 spiffs_create_partition_image(storage ../storage FLASH_IN_PROJECT)

firmware/main/isrgrootx1.pem

@@ -0,0 +1,31 @@
+-----BEGIN CERTIFICATE-----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=
+-----END CERTIFICATE-----

firmware/main/src/app_task.cpp

@@ -8,6 +8,7 @@
 #include "i2c_checker.h"
 #include "led_status.h"
 #include "message_manager.h"
+#include "my_mqtt_client.h"
 #include "persistence_manager.h"
 #include "simulator.h"
 #include "ui/ClockScreenSaver.h"
@@ -252,6 +253,8 @@ void app_task(void *args)
 
     wifi_manager_init();
 
+    mqtt_client_start();
+
     message_manager_register_listener(on_message_received);
 
     start_simulation();

firmware/main/src/hal/u8g2_esp32_hal.c

@@ -7,7 +7,7 @@
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
 
-#include "u8g2_esp32_hal.h"
+#include "hal/u8g2_esp32_hal.h"
 
 static const char *TAG = "u8g2_hal";
 static const unsigned int I2C_TIMEOUT_MS = 1000;

firmware/website/.run/dev.run.xml

@@ -0,0 +1,12 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="dev" type="js.build_tools.npm" nameIsGenerated="true">
+    <package-json value="$PROJECT_DIR$/package.json" />
+    <command value="run" />
+    <scripts>
+      <script value="dev" />
+    </scripts>
+    <node-interpreter value="project" />
+    <envs />
+    <method v="2" />
+  </configuration>
+</component>

firmware/website/.vite/deps/_metadata.json

@@ -0,0 +1,8 @@
+{
+  "hash": "15486339",
+  "configHash": "5ec1f82b",
+  "lockfileHash": "2bc40369",
+  "browserHash": "9efd6930",
+  "optimized": {},
+  "chunks": {}
+}

firmware/website/.vite/deps/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

firmware/website/index.html

@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html lang="de">
+
+<head>
+	<meta charset="UTF-8">
+	<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
+	<meta name="theme-color" content="#1a1a2e">
+	<meta name="apple-mobile-web-app-capable" content="yes">
+	<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
+	<link rel="icon" type="image/svg+xml" href="favicon.svg">
+	<title>System Control</title>
+</head>
+
+<body>
+	<div id="app"></div>
+	<script type="module" src="/src/main.js"></script>
+</body>
+
+</html>

firmware/website/jsconfig.json

@@ -0,0 +1,32 @@
+{
+	"compilerOptions": {
+		"moduleResolution": "bundler",
+		"target": "ESNext",
+		"module": "ESNext",
+		/**
+		 * svelte-preprocess cannot figure out whether you have
+		 * a value or a type, so tell TypeScript to enforce using
+		 * `import type` instead of `import` for Types.
+		 */
+		"verbatimModuleSyntax": true,
+		"isolatedModules": true,
+		"resolveJsonModule": true,
+		/**
+		 * To have warnings / errors of the Svelte compiler at the
+		 * correct position, enable source maps by default.
+		 */
+		"sourceMap": true,
+		"esModuleInterop": true,
+		"skipLibCheck": true,
+		/**
+		 * Typecheck JS in `.svelte` and `.js` files by default.
+		 * Disable this if you'd like to use dynamic types.
+		 */
+		"checkJs": true
+	},
+	/**
+	 * Use global.d.ts instead of compilerOptions.types
+	 * to avoid limiting type declarations.
+	 */
+	"include": ["src/**/*.d.ts", "src/**/*.js", "src/**/*.svelte"]
+}

firmware/website/package.json

@@ -0,0 +1,20 @@
+{
+	"name": "learn-svelte",
+	"type": "module",
+	"scripts": {
+		"dev": "vite",
+		"build": "vite build",
+		"preview": "vite preview"
+	},
+	"devDependencies": {
+		"@sveltejs/vite-plugin-svelte": "^6.1.1",
+		"svelte": "^5.38.1",
+		"vite": "^7.1.2",
+		"vite-plugin-compression": "^0.5.1"
+	},
+	"dependencies": {
+		"@fontsource/atkinson-hyperlegible": "^5.2.6",
+		"@picocss/pico": "^2.1.1",
+		"gsap": "^3.13.0"
+	}
+}

firmware/website/public/favicon.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text y=".9em" font-size="90">🚂</text></svg>

firmware/website/src/App.svelte

@@ -0,0 +1,27 @@
+<script lang="ts">
+	import Header from "./compoents/Header.svelte";
+	import Index from "./Index.svelte";
+	import Captive from "./Captive.svelte";
+	import { onMount } from "svelte";
+	import { writable } from "svelte/store";
+
+	const isCaptive = writable(false);
+
+	function checkHash() {
+		isCaptive.set(window.location.hash === "#/captive");
+	}
+
+	onMount(() => {
+		checkHash();
+		window.addEventListener("hashchange", checkHash);
+		return () => window.removeEventListener("hashchange", checkHash);
+	});
+</script>
+
+<Header />
+
+{#if $isCaptive}
+	<Captive />
+{:else}
+	<Index />
+{/if}

firmware/website/src/Captive.svelte

@@ -0,0 +1,5 @@
+<script lang="ts">
+    import { t } from "./i18n/store";
+</script>
+
+<h1>{$t("welcome")} - Captive Portal</h1>

firmware/website/src/Index.svelte

@@ -0,0 +1,5 @@
+<script lang="ts">
+    import { t } from "./i18n/store";
+</script>
+
+<h1>{$t("welcome")}</h1>

firmware/website/src/app.css

@@ -0,0 +1,70 @@
+:root {
+	--bg-color: #1a1a2e;
+	--card-bg: #16213e;
+	--accent: #0f3460;
+	--text: #eaeaea;
+	--text-muted: #a0a0a0;
+	--success: #00d26a;
+	--error: #ff6b6b;
+	--border: #2a2a4a;
+	--input-bg: #1a1a2e;
+	--shadow: rgba(0, 0, 0, 0.3);
+	--primary: #c41e3a;
+}
+
+[data-theme="light"] {
+	--bg-color: #faf8f5;
+	--card-bg: #ffffff;
+	--accent: #fef2f2;
+	--text: #1a1a2e;
+	--text-muted: #6b7280;
+	--success: #c41e3a;
+	--error: #dc2626;
+	--border: #e5d9d0;
+	--input-bg: #ffffff;
+	--shadow: rgba(196, 30, 58, 0.1);
+	--primary: #c41e3a;
+}
+
+[data-theme="light"] .header h1 {
+	color: var(--primary);
+}
+
+* {
+	margin: 0;
+	padding: 0;
+	box-sizing: border-box;
+}
+
+body {
+	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+	background: var(--bg-color);
+	color: var(--text);
+	min-height: 100vh;
+	transition: background 0.3s, color 0.3s;
+	padding: 12px;
+}
+
+h1 {
+	font-size: 1.5rem;
+	color: var(--text);
+}
+
+#app {
+	max-width: 900px;
+	margin: 0 auto;
+}
+
+@media (max-width: 600px) {
+	body {
+		padding: 6px;
+	}
+}
+
+@supports (padding: max(0px)) {
+	body {
+		padding-left: max(12px, env(safe-area-inset-left));
+		padding-right: max(12px, env(safe-area-inset-right));
+		padding-bottom: max(12px, env(safe-area-inset-bottom));
+	}
+}

firmware/website/src/compoents/Header.svelte

@@ -0,0 +1,133 @@
+<script lang="ts">
+    import Toggle from "./Toggle.svelte";
+    import {toggleTheme} from "../theme";
+    import {onMount} from "svelte";
+    import {writable} from "svelte/store";
+    import {lang, t} from "../i18n/store";
+
+    const theme = writable<"dark" | "light">("dark");
+
+    function applyInitialTheme() {
+        const userTheme = localStorage.getItem("theme");
+        if (userTheme) {
+            document.documentElement.setAttribute("data-theme", userTheme);
+        } else if (window.matchMedia("(prefers-color-scheme: light)").matches) {
+            document.documentElement.setAttribute("data-theme", "light");
+        } else {
+            document.documentElement.setAttribute("data-theme", "dark");
+        }
+    }
+
+    function updateThemeFromDom() {
+        const t = document.documentElement.getAttribute("data-theme");
+        theme.set(t === "light" ? "light" : "dark");
+    }
+
+    function handleThemeToggle() {
+        toggleTheme();
+        updateThemeFromDom();
+    }
+
+    let themeIcon = $state("🌙");
+    let themeLabel = $state("Dark");
+    let currentLangCode = $state($lang);
+    let currentLang = $state("Deutsch");
+    let currentFlag = $state("🇩🇪");
+
+    $effect(() => {
+        theme.subscribe(($theme) => {
+            themeIcon = $theme === "light" ? "☀️" : "🌙";
+            themeLabel = $theme === "light" ? "Light" : "Dark";
+        });
+        lang.subscribe(($lang) => {
+            currentLangCode = $lang;
+            currentLang = $lang === "de" ? "Deutsch" : "English";
+            currentFlag = $lang === "de" ? "🇩🇪" : "🇬🇧";
+        });
+    });
+
+    function handleLangChange(newLang: "de" | "en") {
+        lang.set(newLang);
+
+        localStorage.setItem("lang", newLang);
+    }
+
+    onMount(() => {
+        applyInitialTheme();
+        updateThemeFromDom();
+        window.addEventListener("storage", updateThemeFromDom);
+
+        // Listener für OS-Theme-Änderung
+        const mql = window.matchMedia("(prefers-color-scheme: light)");
+        const osThemeListener = () => {
+            // Nur reagieren, wenn kein User-Theme gesetzt ist
+            if (!localStorage.getItem("theme")) {
+                applyInitialTheme();
+                updateThemeFromDom();
+            }
+        };
+        mql.addEventListener("change", osThemeListener);
+
+        return () => {
+            window.removeEventListener("storage", updateThemeFromDom);
+            mql.removeEventListener("change", osThemeListener);
+        };
+    });
+</script>
+
+<div class="header">
+    <div class="header-controls">
+        <Toggle
+                label={currentLang}
+                icon={currentFlag}
+                ariaLabel="Sprache wechseln"
+                onClick={() => {
+                const newLang = currentLangCode === "de" ? "en" : "de";
+                handleLangChange(newLang);
+            }}
+        />
+
+        <Toggle
+                label={themeLabel}
+                icon={themeIcon}
+                ariaLabel="Theme wechseln"
+                onClick={handleThemeToggle}
+        />
+    </div>
+    <h1>🚂 System Control</h1>
+</div>
+
+<style>
+    .header {
+        display: flex;
+        justify-content: space-between;
+        align-items: center;
+        margin-bottom: 20px;
+        flex-wrap: wrap;
+        gap: 10px;
+    }
+
+    .header-controls {
+        display: flex;
+        align-items: center;
+        gap: 8px;
+    }
+
+    @media (max-width: 600px) {
+        .header {
+            flex-direction: column;
+            align-items: stretch;
+            text-align: center;
+        }
+
+        .header h1 {
+            order: 1;
+        }
+    }
+
+    @media (max-width: 380px) {
+        .header h1 {
+            font-size: 1.2rem;
+        }
+    }
+</style>

firmware/website/src/compoents/Toggle.svelte

@@ -0,0 +1,37 @@
+<script lang="ts">
+    const { label, icon, ariaLabel, onClick } = $props<{
+        label: string;
+        icon: string;
+        ariaLabel: string;
+        onClick?: () => void;
+    }>();
+</script>
+
+<button class="toggle" aria-label={ariaLabel} onclick={onClick}>
+    <span class="icon" id="icon">{icon}</span>
+    <span class="label" id="label">{label}</span>
+</button>
+
+<style>
+    .toggle {
+        display: flex;
+        align-items: center;
+        gap: 6px;
+        background: var(--card-bg);
+        padding: 8px 12px;
+        border-radius: 20px;
+        border: 1px solid var(--border);
+        cursor: pointer;
+        transition: all 0.2s;
+        font-size: 0.85rem;
+        color: var(--text-muted);
+    }
+
+    .toggle:hover {
+        border-color: var(--success);
+    }
+
+    .icon {
+        font-size: 1.2rem;
+    }
+</style>

firmware/website/src/i18n/de.json

@@ -0,0 +1,6 @@
+{
+    "hello": "Hallo Welt",
+    "welcome": "Willkommen",
+    "language": "Sprache",
+    "save": "Speichern"
+}

firmware/website/src/i18n/en.json

@@ -0,0 +1,6 @@
+{
+    "hello": "Hello World",
+    "welcome": "Welcome",
+    "language": "Language",
+    "save": "Save"
+}

firmware/website/src/i18n/index.ts

@@ -0,0 +1,12 @@
+import de from './de.json';
+import en from './en.json';
+
+export const translations = { de, en };
+
+export type Lang = keyof typeof translations;
+
+export function getInitialLang(): Lang {
+    const navLang = navigator.language.slice(0, 2);
+    if (navLang in translations) return navLang as Lang;
+    return 'en';
+}

firmware/website/src/i18n/store.ts

@@ -0,0 +1,16 @@
+import { writable, derived } from 'svelte/store';
+import { translations, getInitialLang, type Lang } from './index';
+
+function getLang(): Lang {
+    const stored = localStorage.getItem('lang');
+    if (stored && stored in translations) return stored as Lang;
+    return getInitialLang();
+}
+
+export const lang = writable<Lang>(getLang());
+
+export const t = derived(lang, $lang => {
+    return (key: string) => {
+        return translations[$lang][key] || key;
+    };
+});

firmware/website/src/main.js

@@ -0,0 +1,9 @@
+import { mount } from 'svelte'
+import App from './App.svelte'
+import './app.css'
+
+const app = mount(App, {
+	target: document.getElementById('app'),
+})
+
+export default app

firmware/website/src/theme.ts

@@ -0,0 +1,18 @@
+// src/theme.ts
+export function setTheme(theme: 'light' | 'dark') {
+    document.documentElement.setAttribute('data-theme', theme);
+    localStorage.setItem('theme', theme);
+
+    const icon = document.getElementById('theme-icon');
+    const label = document.getElementById('theme-label');
+    const metaTheme = document.querySelector('meta[name="theme-color"]') as HTMLMetaElement | null;
+
+    if (icon) icon.textContent = theme === 'light' ? '☀️' : '🌙';
+    if (label) label.textContent = theme === 'light' ? 'Light' : 'Dark';
+    if (metaTheme) metaTheme.content = theme === 'light' ? '#f0f2f5' : '#1a1a2e';
+}
+
+export function toggleTheme() {
+    const current = document.documentElement.getAttribute('data-theme') as 'light' | 'dark' | null || 'dark';
+    setTheme(current === 'dark' ? 'light' : 'dark');
+}

firmware/website/src/vite-env.d.ts

@@ -0,0 +1,2 @@
+/// <reference types="svelte" />
+/// <reference types="vite/client" />

firmware/website/svelte.config.js

@@ -0,0 +1,17 @@
+import { vitePreprocess } from '@sveltejs/vite-plugin-svelte'
+
+/** @type {import("@sveltejs/vite-plugin-svelte").SvelteConfig} */
+export default {
+	// Consult https://svelte.dev/docs#compile-time-svelte-preprocess
+	// for more information about preprocessors
+	preprocess: vitePreprocess(),
+	compilerOptions: {
+		runes: true,
+	},
+	vitePlugin: {
+		inspector: {
+			showToggleButton: 'always',
+			toggleButtonPos: 'bottom-right'
+		}
+	}
+}

firmware/website/vite.config.js

@@ -0,0 +1,14 @@
+import { defineConfig } from 'vite'
+import { svelte } from '@sveltejs/vite-plugin-svelte'
+import viteCompression from 'vite-plugin-compression';
+
+export default defineConfig({
+	plugins: [
+		svelte(),
+		viteCompression()
+	],
+	build: {
+		outDir: '../storage/website',
+		assetsDir: '',
+	},
+})