update LICENSE

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

.github/workflows/esp32_build.yaml

@@ -7,6 +7,10 @@ on:
   schedule:
     - cron: "0 5 * * 3"
 
+permissions:
+  contents: read
+  pull-requests: write
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
@@ -15,8 +19,9 @@ jobs:
   build:
     strategy:
       matrix:
-        idf_ver: [release-v5.4, latest]
+        idf_ver: [release-v5.4, release-v5.5, latest]
-        idf_target: [esp32, esp32s3, esp32c3]
+        idf_target:
+          [esp32, esp32c3, esp32c5, esp32c6, esp32h2, esp32p4, esp32s3]
 
     runs-on: ubuntu-latest
 

LICENSE

@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source. For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code. There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.

components/led_matrix/include/led_matrix.h

@@ -1,5 +0,0 @@
-#pragma once
-
-#include <stdint.h>
-
-void led_matrix_init(void *args);

components/led_matrix/led_matrix.c

@@ -1,70 +0,0 @@
-#include "led_matrix.h"
-
-#include "freertos/FreeRTOS.h"
-#include "led_strip.h"
-#include "esp_log.h"
-#include "sdkconfig.h"
-
-typedef struct
-{
-    uint8_t red;
-    uint8_t green;
-    uint8_t blue;
-} led_data_t;
-
-typedef struct
-{
-    led_strip_handle_t led_strip;
-    led_data_t *data;
-    uint32_t size;
-} led_matrix_t;
-
-led_matrix_t led_matrix;
-
-static void led_strip_init(uint8_t gpio_pin, uint32_t size)
-{
-    led_matrix.size = size;
-    led_matrix.data = (led_data_t *)malloc(sizeof(led_data_t) * size);
-
-    led_strip_config_t strip_config = {
-        .strip_gpio_num = gpio_pin,
-        .max_leds = size,
-        .led_model = LED_MODEL_WS2812,
-        .color_component_format = LED_STRIP_COLOR_COMPONENT_FMT_RGB,
-        .flags = {
-            .invert_out = false,
-        }};
-
-    led_strip_rmt_config_t rmt_config = {
-        .clk_src = RMT_CLK_SRC_DEFAULT,
-        .resolution_hz = 0,
-        .mem_block_symbols = 0,
-        .flags = {
-            .with_dma = true,
-        }};
-
-    ESP_ERROR_CHECK(led_strip_new_rmt_device(&strip_config, &rmt_config, &led_matrix.led_strip));
-}
-
-void led_matrix_init(void *args)
-{
-    ESP_LOGI(pcTaskGetName(NULL), "Calling led_matrix_init()");
-
-    led_strip_init(CONFIG_WLED_DIN_PIN, CONFIG_WLED_LED_COUNT);
-    int value = 0;
-    for (int i = 0; i < led_matrix.size; i++)
-    {
-        led_strip_set_pixel(led_matrix.led_strip, i, value, 0, 0);
-    }
-    led_strip_refresh(led_matrix.led_strip);
-
-    while (true)
-    {
-        vTaskDelay(pdMS_TO_TICKS(100));
-    }
-
-    free(led_matrix.data);
-
-    ESP_LOGI(pcTaskGetName(NULL), "Exiting led_matrix_init()");
-    vTaskDelete(NULL);
-}

components/remote_control/CMakeLists.txt

@@ -1,5 +0,0 @@
-idf_component_register(SRCS "led_service.c" "device_service.c" "remote_control.c"
-                    INCLUDE_DIRS "include"
-                    PRIV_REQUIRES
-                        bt
-)

components/remote_control/device_service.c

@@ -1,15 +0,0 @@
-#include "include/device_service.h"
-
-int ds_model_number_read(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
-{
-    char *model_number = "Miniature Town v1";
-    os_mbuf_append(ctxt->om, model_number, strlen(model_number));
-    return 0;
-}
-
-int ds_manufacturer_read(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
-{
-    char *manufacturer = "mars3142";
-    os_mbuf_append(ctxt->om, manufacturer, strlen(manufacturer));
-    return 0;
-}

components/remote_control/include/led_service.h

@@ -1,7 +0,0 @@
-#pragma once
-
-#include <stdio.h>
-#include "host/ble_hs.h"
-
-int ls_write(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg);
-int ls_read(uint16_t con_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg);

components/remote_control/include/remote_control.h

@@ -1,3 +0,0 @@
-#pragma once
-
-void ble_init(void *args);

components/remote_control/led_service.c

@@ -1,59 +0,0 @@
-#include "include/led_service.h"
-
-static const char *TAG = "led_service";
-
-// Write data to ESP32 defined as server
-int ls_write(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
-{
-    const char *received_payload = (const char *)ctxt->om->om_data;
-    uint16_t payload_len = ctxt->om->om_len;
-
-    // Define command strings
-    const char CMD_LIGHT_ON[] = "LIGHT ON";
-    const char CMD_LIGHT_OFF[] = "LIGHT OFF";
-    const char CMD_FAN_ON[] = "FAN ON";
-    const char CMD_FAN_OFF[] = "FAN OFF";
-
-    if (payload_len == (sizeof(CMD_LIGHT_ON) - 1) &&
-        strncmp(received_payload, CMD_LIGHT_ON, payload_len) == 0)
-    {
-        ESP_LOGI(TAG, "LIGHT ON");
-        // TODO: Implement action for LIGHT ON
-    }
-    else if (payload_len == (sizeof(CMD_LIGHT_OFF) - 1) &&
-             strncmp(received_payload, CMD_LIGHT_OFF, payload_len) == 0)
-    {
-        ESP_LOGI(TAG, "LIGHT OFF");
-        // TODO: Implement action for LIGHT OFF
-    }
-    else if (payload_len == (sizeof(CMD_FAN_ON) - 1) &&
-             strncmp(received_payload, CMD_FAN_ON, payload_len) == 0)
-    {
-        ESP_LOGI(TAG, "FAN ON");
-        // TODO: Implement action for FAN ON
-    }
-    else if (payload_len == (sizeof(CMD_FAN_OFF) - 1) &&
-             strncmp(received_payload, CMD_FAN_OFF, payload_len) == 0)
-    {
-        ESP_LOGI(TAG, "FAN OFF");
-        // TODO: Implement action for FAN OFF
-    }
-    else
-    {
-        char temp_buffer[payload_len + 1];
-        memcpy(temp_buffer, received_payload, payload_len);
-        temp_buffer[payload_len] = '\0';
-
-        ESP_LOGI(TAG, "Unknown command from client: %s", temp_buffer);
-    }
-
-    return 0;
-}
-
-// Read data from ESP32 defined as server
-int ls_read(uint16_t con_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
-{
-    char *data = "Data from the server";
-    os_mbuf_append(ctxt->om, data, strlen(data));
-    return 0;
-}

components/remote_control/remote_control.c

@@ -1,140 +0,0 @@
-#include <stdio.h>
-#include <string.h>
-#include "freertos/FreeRTOS.h"
-#include "freertos/task.h"
-#include "freertos/event_groups.h"
-#include "esp_event.h"
-#include "esp_log.h"
-#include "esp_nimble_hci.h"
-#include "nimble/nimble_port.h"
-#include "nimble/nimble_port_freertos.h"
-#include "host/ble_hs.h"
-#include "host/ble_sm.h"
-#include "services/gap/ble_svc_gap.h"
-#include "services/gatt/ble_svc_gatt.h"
-#include "sdkconfig.h"
-
-#include "include/device_service.h"
-#include "include/led_service.h"
-
-static const char *TAG = "remote_control";
-
-uint8_t ble_addr_type;
-
-void ble_app_advertise(void);
-
-// Array of pointers to other service definitions
-static const struct ble_gatt_svc_def gatt_svcs[] = {
-    {
-        .type = BLE_GATT_SVC_TYPE_PRIMARY,
-        .uuid = BLE_UUID16_DECLARE(0x180A),
-        .characteristics = (struct ble_gatt_chr_def[]){{.uuid = BLE_UUID16_DECLARE(0x2A24), .flags = BLE_GATT_CHR_F_READ, .access_cb = ds_model_number_read}, {.uuid = BLE_UUID16_DECLARE(0x2A29), .flags = BLE_GATT_CHR_F_READ, .access_cb = ds_manufacturer_read}, {0}},
-    },
-    {
-        .type = BLE_GATT_SVC_TYPE_PRIMARY,
-        .uuid = BLE_UUID16_DECLARE(0x180),
-        .characteristics = (struct ble_gatt_chr_def[]){{.uuid = BLE_UUID16_DECLARE(0xFEF4), .flags = BLE_GATT_CHR_F_READ, .access_cb = ls_read}, {.uuid = BLE_UUID16_DECLARE(0xDEAD), .flags = BLE_GATT_CHR_F_WRITE, .access_cb = ls_write}, {0}},
-    },
-    {0}};
-
-// BLE event handling
-static int ble_gap_event(struct ble_gap_event *event, void *arg)
-{
-    switch (event->type)
-    {
-    case BLE_GAP_EVENT_CONNECT:
-        ESP_LOGI(TAG, "BLE GAP EVENT CONNECT %s", event->connect.status == 0 ? "OK!" : "FAILED!");
-        if (event->connect.status == 0)
-        {
-            // Start security pairing without disconnecting
-            int ret = ble_gap_security_initiate(event->connect.conn_handle);
-            ESP_LOGI(TAG, "BLE GAP SECURITY INITIATE %s", ret == 0 ? "OK!" : "FAILED!");
-        }
-        else
-        {
-            // Re-advertise if connection failed
-            ble_app_advertise();
-        }
-        break;
-
-    case BLE_GAP_EVENT_DISCONNECT:
-        ESP_LOGI(TAG, "BLE GAP EVENT DISCONNECTED");
-        // Re-advertise after disconnection
-        ble_app_advertise();
-        break;
-
-    case BLE_GAP_EVENT_ADV_COMPLETE:
-        ESP_LOGI(TAG, "BLE GAP EVENT ADV COMPLETE");
-        // Re-advertise to continue accepting new clients
-        ble_app_advertise();
-        break;
-
-    case BLE_GAP_EVENT_ENC_CHANGE:
-        if (event->enc_change.status == 0)
-        {
-            ESP_LOGI(TAG, "Encryption enabled for connection");
-        }
-        else
-        {
-            ESP_LOGE(TAG, "Failed to enable encryption, status=%d", event->enc_change.status);
-        }
-        break;
-
-    default:
-        break;
-    }
-    return 0;
-}
-
-// Define the BLE connection
-void ble_app_advertise(void)
-{
-    // GAP - device name definition
-    struct ble_hs_adv_fields fields;
-    const char *device_name;
-    memset(&fields, 0, sizeof(fields));
-    device_name = ble_svc_gap_device_name(); // Read the BLE device name
-    fields.name = (uint8_t *)device_name;
-    fields.name_len = strlen(device_name);
-    fields.name_is_complete = 1;
-    ble_gap_adv_set_fields(&fields);
-
-    // GAP - device connectivity definition
-    struct ble_gap_adv_params adv_params;
-    memset(&adv_params, 0, sizeof(adv_params));
-    adv_params.conn_mode = BLE_GAP_CONN_MODE_UND; // connectable or non-connectable
-    adv_params.disc_mode = BLE_GAP_DISC_MODE_GEN; // discoverable or non-discoverable
-    ble_gap_adv_start(ble_addr_type, NULL, BLE_HS_FOREVER, &adv_params, ble_gap_event, NULL);
-}
-
-// The application
-void ble_app_on_sync(void)
-{
-    ble_hs_id_infer_auto(0, &ble_addr_type); // Determines the best address type automatically
-    ble_app_advertise();                     // Define the BLE connection
-}
-
-// The infinite task
-void host_task(void *param)
-{
-    nimble_port_run(); // This function will return only when nimble_port_stop() is executed
-}
-
-void ble_init(void *args)
-{
-    nimble_port_init();
-    ble_svc_gap_device_name_set("Miniature Town");
-    ble_svc_gap_init();
-    ble_svc_gatt_init();
-    ble_gatts_count_cfg(gatt_svcs);
-    ble_gatts_add_svcs(gatt_svcs);
-    ble_hs_cfg.sync_cb = ble_app_on_sync;
-
-    // Configure security settings
-    ble_hs_cfg.sm_bonding = 1;
-    ble_hs_cfg.sm_sc = 0;
-    ble_hs_cfg.sm_our_key_dist = BLE_SM_PAIR_KEY_DIST_ENC;
-    ble_hs_cfg.sm_their_key_dist = BLE_SM_PAIR_KEY_DIST_ENC;
-
-    nimble_port_freertos_init(host_task); // Run the host task
-}

firmware/.clang-format

@@ -0,0 +1,2 @@
+---
+BasedOnStyle: Microsoft

firmware/.clangd

@@ -0,0 +1,17 @@
+CompileFlags:
+    Add: 
+        - -Wno-unknown-warning-option
+        - -Wno-format
+    Remove: 
+        - -mword-relocations
+
+Diagnostics:
+    ClangTidy:
+        FastCheckFilter: None
+
+---
+
+If:
+    PathMatch: .*\.h
+Diagnostics:
+    UnusedIncludes: None

firmware/components/led_matrix/include/led_matrix.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#include <stdint.h>
+
+void led_matrix_init(void *args);
+uint32_t led_matrix_get_size();
+void led_matrix_set_pixel(uint32_t index, uint8_t red, uint8_t green, uint8_t blue);

firmware/components/led_matrix/led_matrix.c

@@ -0,0 +1,67 @@
+#include "led_matrix.h"
+
+#include "esp_log.h"
+#include "freertos/FreeRTOS.h"
+#include "led_strip.h"
+#include "sdkconfig.h"
+
+typedef struct
+{
+    led_strip_handle_t led_strip;
+    uint32_t size;
+} led_matrix_t;
+
+led_matrix_t led_matrix;
+
+static void led_strip_init(uint8_t gpio_pin, uint32_t size)
+{
+    led_matrix.size = size;
+
+    led_strip_config_t strip_config = {.strip_gpio_num = gpio_pin,
+                                       .max_leds = size,
+                                       .led_model = LED_MODEL_WS2812,
+                                       .color_component_format = LED_STRIP_COLOR_COMPONENT_FMT_RGB,
+                                       .flags = {
+                                           .invert_out = false,
+                                       }};
+
+    led_strip_rmt_config_t rmt_config = {.clk_src = RMT_CLK_SRC_DEFAULT,
+                                         .resolution_hz = 0,
+                                         .mem_block_symbols = 0,
+                                         .flags = {
+                                             .with_dma = true,
+                                         }};
+
+    ESP_ERROR_CHECK(led_strip_new_rmt_device(&strip_config, &rmt_config, &led_matrix.led_strip));
+}
+
+uint32_t led_matrix_get_size()
+{
+    return led_matrix.size;
+}
+
+void led_matrix_set_pixel(uint32_t index, uint8_t red, uint8_t green, uint8_t blue)
+{
+    led_strip_set_pixel(led_matrix.led_strip, index, red, green, blue);
+}
+
+void led_matrix_init(void *args)
+{
+    ESP_LOGI(pcTaskGetName(NULL), "Calling led_matrix_init()");
+
+    led_strip_init(CONFIG_WLED_DIN_PIN, CONFIG_WLED_LED_COUNT);
+    int value = 0;
+    for (int i = 0; i < led_matrix.size; i++)
+    {
+        led_matrix_set_pixel(i, 0, value, 0);
+    }
+
+    while (true)
+    {
+        led_strip_refresh(led_matrix.led_strip);
+        vTaskDelay(pdMS_TO_TICKS(100));
+    }
+
+    ESP_LOGI(pcTaskGetName(NULL), "Exiting led_matrix_init()");
+    vTaskDelete(NULL);
+}

firmware/components/remote_control/CMakeLists.txt

@@ -0,0 +1,12 @@
+idf_component_register(SRCS 
+                        "capability_service.c"
+                        "device_service.c"
+                        "led_service.c"
+                        "remote_control.c"
+                    INCLUDE_DIRS "include"
+                    PRIV_REQUIRES
+                        bt
+                        esp_app_format
+                        storage
+                        led_matrix
+)

firmware/components/remote_control/capability_service.c

@@ -0,0 +1,156 @@
+#include "capability_service.h"
+#include "esp_log.h"
+#include "storage.h"
+#include <string.h>
+#include <stdlib.h>           // For malloc, free
+#include "host/ble_hs.h"      // For ble_hs_mbuf_from_flat, ble_att_mtu
+#include "host/ble_uuid.h"    // For BLE_ATT_MTU_DFLT (often included via ble_hs.h)
+#include "nimble/nimble_port.h" // For os_mbuf related functions
+
+static const char *TAG_CS = "capability_service";
+
+#define CAPA_READ_CHUNK_SIZE 200 // Maximale Bytes pro Lesevorgang aus dem Storage
+
+int capa_read(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
+{
+    esp_err_t storage_status = storage_init();
+    if (storage_status != ESP_OK)
+    {
+        ESP_LOGE(TAG_CS, "Failed to initialize storage: %s", esp_err_to_name(storage_status));
+        const char *err_msg = "Error: Storage init failed";
+        os_mbuf_append(ctxt->om, err_msg, strlen(err_msg));
+        // storage_uninit() sollte hier nicht aufgerufen werden, da die Initialisierung fehlschlug.
+        return 0;
+    }
+
+    char *content = "";
+    os_mbuf_append(ctxt->om, content, strlen(content));
+    const char *filename = "/storage/capability.json"; // Die zu lesende Datei
+    char read_buffer[CAPA_READ_CHUNK_SIZE];
+    ssize_t bytes_read;
+    int os_err;
+
+    ESP_LOGI(TAG_CS, "Reading capabilities from %s", filename);
+
+    // Schleife, um die Datei in Chunks zu lesen und an den mbuf anzuhängen
+    while ((bytes_read = storage_read(filename, read_buffer, sizeof(read_buffer))) > 0)
+    {
+        ESP_LOGD(TAG_CS, "Read %zd bytes from storage", bytes_read);
+        // Den gelesenen Chunk an den BLE-Antwortpuffer anhängen
+        os_err = os_mbuf_append(ctxt->om, read_buffer, bytes_read);
+        if (os_err != 0)
+        {
+            ESP_LOGE(TAG_CS, "Failed to append to mbuf (error %d). May be out of space.", os_err);
+            // Der mbuf könnte voll sein. Stoppe das Anhängen.
+            // Bereits angehängte Daten werden gesendet.
+            break;
+        }
+    }
+
+    // Fehlerbehandlung oder EOF
+    if (bytes_read < 0)
+    {
+        ESP_LOGE(TAG_CS, "Error reading from storage (file: %s, error_code: %zd)", filename, bytes_read);
+        // Wenn noch nichts angehängt wurde, sende eine Fehlermeldung.
+        if (ctxt->om->om_len == 0)
+        {
+            const char *err_msg = "Error: Failed to read capability data";
+            // Hier könnten spezifischere Fehlermeldungen basierend auf bytes_read eingefügt werden
+            os_mbuf_append(ctxt->om, err_msg, strlen(err_msg));
+        }
+    }
+    else
+    { // bytes_read == 0, bedeutet EOF (Ende der Datei)
+        ESP_LOGI(TAG_CS, "Successfully read and appended all data from %s to mbuf.", filename);
+    }
+
+    storage_uninit();
+    return 0;
+}
+
+int capa_char_1979_user_desc(uint16_t con_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
+{
+    const char *desc = "Capabilities of the device";
+    os_mbuf_append(ctxt->om, desc, strlen(desc));
+    return 0;
+}
+
+void capa_notify_data(uint16_t conn_handle, uint16_t char_val_handle)
+{
+    esp_err_t storage_status = storage_init();
+    if (storage_status != ESP_OK)
+    {
+        ESP_LOGE(TAG_CS, "Notify: Failed to initialize storage: %s", esp_err_to_name(storage_status));
+        return;
+    }
+
+    const char *filename = "/storage/capability.json";
+
+    uint16_t mtu = ble_att_mtu(conn_handle);
+    if (mtu == 0) { // Should not happen for an active connection, fallback
+        ESP_LOGW(TAG_CS, "Notify: ble_att_mtu returned 0, using default MTU %d.", BLE_ATT_MTU_DFLT);
+        mtu = BLE_ATT_MTU_DFLT;
+    }
+
+    // Max payload for notification is MTU - 3 (1 byte opcode for Notification, 2 bytes attribute handle)
+    size_t notify_chunk_size = (mtu > 3) ? (mtu - 3) : (BLE_ATT_MTU_DFLT - 3); // Ensure mtu > 3
+
+    // Further cap by CAPA_READ_CHUNK_SIZE if it's smaller and meant as an upper limit for any single read op
+    if (notify_chunk_size > CAPA_READ_CHUNK_SIZE) {
+        notify_chunk_size = CAPA_READ_CHUNK_SIZE;
+    }
+
+    if (notify_chunk_size == 0) { // Safety check
+        ESP_LOGE(TAG_CS, "Notify: Calculated notify_chunk_size is 0. Aborting.");
+        storage_uninit();
+        return;
+    }
+
+    char *read_buffer = malloc(notify_chunk_size);
+    if (!read_buffer)
+    {
+        ESP_LOGE(TAG_CS, "Notify: Failed to allocate read_buffer (%zu bytes)", notify_chunk_size);
+        storage_uninit();
+        return;
+    }
+
+    ESP_LOGI(TAG_CS, "Notify: Reading capabilities from %s to notify conn %u, attr %u (chunk size %zu, MTU %u)",
+             filename, conn_handle, char_val_handle, notify_chunk_size, mtu);
+
+    FILE *fp = fopen(filename, "r");
+    if (!fp)
+    {
+        ESP_LOGE(TAG_CS, "Notify: Failed to open %s for reading.", filename);
+        free(read_buffer);
+        storage_uninit();
+        return;
+    }
+
+    ssize_t bytes_read;
+    while ((bytes_read = fread(read_buffer, 1, notify_chunk_size, fp)) > 0)
+    {
+        ESP_LOGD(TAG_CS, "Notify: Read %zd bytes from storage for notification", bytes_read);
+
+        struct os_mbuf *om = ble_hs_mbuf_from_flat(read_buffer, bytes_read);
+        if (!om) {
+            ESP_LOGE(TAG_CS, "Notify: Failed to allocate mbuf for notification. Stopping.");
+            break; // Stop sending if mbuf allocation fails
+        }
+
+        int rc = ble_gatts_notify_custom(conn_handle, char_val_handle, om);
+        if (rc != 0) {
+            ESP_LOGE(TAG_CS, "Notify: Error sending notification (rc=%d). Stopping.", rc);
+            // ble_gatts_notify_custom frees 'om' on success or if it takes ownership even on some errors.
+            // If it returns an error where 'om' is not freed, we might need os_mbuf_free_chain(om);
+            // For now, assume NimBLE handles 'om' correctly in error cases like BLE_HS_ENOMEM.
+            break; // Stop if notification fails
+        }
+        ESP_LOGD(TAG_CS, "Notify: Sent %zd bytes successfully.", bytes_read);
+    }
+
+    if (ferror(fp)) { ESP_LOGE(TAG_CS, "Notify: File read error from %s.", filename); }
+    fclose(fp);
+    free(read_buffer);
+    storage_uninit();
+    ESP_LOGI(TAG_CS, "Notify: Finished sending capability data for conn %u.", conn_handle);
+}

firmware/components/remote_control/device_service.c

@@ -0,0 +1,29 @@
+#include "include/device_service.h"
+#include "esp_app_desc.h"
+#include <stdio.h>
+#include <string.h>
+
+int ds_model_number_read(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
+{
+    char model_number_str[65];
+    const esp_app_desc_t *app_desc = esp_app_get_description();
+
+    if (app_desc->project_name[0] != '\0' && app_desc->version[0] != '\0')
+    {
+        snprintf(model_number_str, sizeof(model_number_str), "%s v%s", app_desc->project_name, app_desc->version);
+    }
+    else
+    {
+        snprintf(model_number_str, sizeof(model_number_str), "undefined");
+    }
+
+    os_mbuf_append(ctxt->om, model_number_str, strlen(model_number_str));
+    return 0;
+}
+
+int ds_manufacturer_read(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
+{
+    char *manufacturer = "mars3142";
+    os_mbuf_append(ctxt->om, manufacturer, strlen(manufacturer));
+    return 0;
+}

firmware/components/remote_control/include/capability_service.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "host/ble_hs.h"
+#include <stdio.h>
+
+/// Service Characteristics Callback
+int capa_read(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg);
+void capa_notify_data(uint16_t conn_handle, uint16_t char_val_handle);
+
+/// Service Characteristics User Description
+int capa_char_1979_user_desc(uint16_t con_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg);

firmware/components/remote_control/include/device_service.h

@@ -1,7 +1,7 @@
 #pragma once
 
-#include <stdio.h>
 #include "host/ble_hs.h"
+#include <stdio.h>
 
 int ds_model_number_read(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg);
 int ds_manufacturer_read(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg);

firmware/components/remote_control/include/led_service.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include "host/ble_hs.h"
+#include <stdio.h>
+
+/// LED Service Characteristic Callbacks
+int ls_write(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg);
+int ls_capabilities_read(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg);
+
+/// LED Service Characteristic User Description
+int ls_char_a000_user_desc(uint16_t con_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg);
+int ls_char_dead_user_desc(uint16_t con_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg);

firmware/components/remote_control/include/remote_control.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void ble_init(void);

firmware/components/remote_control/led_service.c

@@ -0,0 +1,77 @@
+#include "include/led_service.h"
+
+#include "led_matrix.h"
+
+static const char *TAG = "led_service";
+
+/// Capabilities of Device
+int ls_capabilities_read(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
+{
+    char *data = "To be implemented later";
+    os_mbuf_append(ctxt->om, data, strlen(data));
+    return 0;
+}
+
+// Write data to ESP32 defined as server
+int ls_write(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
+{
+    const char *received_payload = (const char *)ctxt->om->om_data;
+    uint16_t payload_len = ctxt->om->om_len;
+
+    // Define command strings
+    const char CMD_LIGHT_ON[] = "LIGHT ON";
+    const char CMD_LIGHT_OFF[] = "LIGHT OFF";
+    const char CMD_FAN_ON[] = "FAN ON";
+    const char CMD_FAN_OFF[] = "FAN OFF";
+
+    if (payload_len == (sizeof(CMD_LIGHT_ON) - 1) && strncmp(received_payload, CMD_LIGHT_ON, payload_len) == 0)
+    {
+        ESP_LOGI(TAG, "LIGHT ON");
+        for (int i = 0; i < led_matrix_get_size(); i++)
+        {
+            led_matrix_set_pixel(i, 10, 10, 0);
+        }
+    }
+    else if (payload_len == (sizeof(CMD_LIGHT_OFF) - 1) && strncmp(received_payload, CMD_LIGHT_OFF, payload_len) == 0)
+    {
+        ESP_LOGI(TAG, "LIGHT OFF");
+        for (int i = 0; i < led_matrix_get_size(); i++)
+        {
+            led_matrix_set_pixel(i, 0, 0, 0);
+        }
+    }
+    else if (payload_len == (sizeof(CMD_FAN_ON) - 1) && strncmp(received_payload, CMD_FAN_ON, payload_len) == 0)
+    {
+        ESP_LOGI(TAG, "FAN ON");
+        // TODO: Implement action for FAN ON
+    }
+    else if (payload_len == (sizeof(CMD_FAN_OFF) - 1) && strncmp(received_payload, CMD_FAN_OFF, payload_len) == 0)
+    {
+        ESP_LOGI(TAG, "FAN OFF");
+        // TODO: Implement action for FAN OFF
+    }
+    else
+    {
+        char temp_buffer[payload_len + 1];
+        memcpy(temp_buffer, received_payload, payload_len);
+        temp_buffer[payload_len] = '\0';
+
+        ESP_LOGI(TAG, "Unknown command from client: %s", temp_buffer);
+    }
+
+    return 0;
+}
+
+int ls_char_a000_user_desc(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
+{
+    const char *desc = "Capabilities of Device";
+    os_mbuf_append(ctxt->om, desc, strlen(desc));
+    return 0;
+}
+
+int ls_char_dead_user_desc(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
+{
+    const char *desc = "Readable Data from Server";
+    os_mbuf_append(ctxt->om, desc, strlen(desc));
+    return 0;
+}

firmware/components/remote_control/remote_control.c

@@ -0,0 +1,250 @@
+#include <stdio.h>
+#include <string.h>
+
+#include "capability_service.h"
+#include "esp_event.h"
+#include "esp_log.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/event_groups.h"
+#include "freertos/task.h"
+#include "host/ble_hs.h"
+#include "host/ble_sm.h"
+#include "host/ble_uuid.h"
+#include "include/device_service.h"
+#include "include/led_service.h"
+#include "led_matrix.h"
+#include "nimble/nimble_port.h"
+#include "nimble/nimble_port_freertos.h"
+#include "sdkconfig.h"
+#include "services/gap/ble_svc_gap.h"
+#include "services/gatt/ble_svc_gatt.h"
+
+static const char *TAG = "remote_control";
+
+static const ble_uuid16_t device_service_uuid = BLE_UUID16_INIT(0x180A);
+static const ble_uuid128_t capability_service_uuid =
+    BLE_UUID128_INIT(0x91, 0xB6, 0xCA, 0x95, 0xB2, 0xC6, 0x7B, 0x90, 0x31, 0x45, 0x77, 0xE6, 0x67, 0x10, 0x68, 0xB9);
+static const ble_uuid16_t led_service_uuid = BLE_UUID16_INIT(0x1007);
+
+uint8_t ble_addr_type;
+
+// Handle for the capability characteristic value
+static uint16_t g_capa_char_val_handle;
+
+static void ble_app_advertise(void);
+
+static struct ble_gatt_dsc_def char_0xA000_descs[] = {{
+                                                          .uuid = BLE_UUID16_DECLARE(0x2901),
+                                                          .att_flags = BLE_ATT_F_READ,
+                                                          .access_cb = ls_char_a000_user_desc,
+                                                      },
+                                                      {0}};
+
+static struct ble_gatt_dsc_def char_0xDEAD_descs[] = {{
+                                                          .uuid = BLE_UUID16_DECLARE(0x2901),
+                                                          .att_flags = BLE_ATT_F_WRITE,
+                                                          .access_cb = ls_char_dead_user_desc,
+                                                      },
+                                                      {0}};
+
+static struct ble_gatt_dsc_def char_0x1979_desc[] = {{
+                                                         .uuid = BLE_UUID16_DECLARE(0x2901),
+                                                         .att_flags = BLE_ATT_F_READ,
+                                                         .access_cb = capa_char_1979_user_desc,
+                                                     },
+                                                     {0}};
+
+// Array of pointers to other service definitions
+static const struct ble_gatt_svc_def gatt_svcs[] = {
+    {
+        .type = BLE_GATT_SVC_TYPE_PRIMARY,
+        .uuid = &device_service_uuid.u,
+        .characteristics =
+            (struct ble_gatt_chr_def[]){
+                {.uuid = BLE_UUID16_DECLARE(0x2A24), .flags = BLE_GATT_CHR_F_READ, .access_cb = ds_model_number_read},
+                {.uuid = BLE_UUID16_DECLARE(0x2A29), .flags = BLE_GATT_CHR_F_READ, .access_cb = ds_manufacturer_read},
+                {0}},
+    },
+    {
+        .type = BLE_GATT_SVC_TYPE_PRIMARY,
+        .uuid = &capability_service_uuid.u,
+        .characteristics = (struct ble_gatt_chr_def[]){{
+                                                           .uuid = BLE_UUID16_DECLARE(0x1979),
+                                                           .flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_NOTIFY,
+                                                           .access_cb = capa_read,
+                                                           .val_handle = &g_capa_char_val_handle,
+                                                           .descriptors = char_0x1979_desc,
+                                                       },
+                                                       {0}},
+    },
+    {
+        .type = BLE_GATT_SVC_TYPE_PRIMARY,
+        .uuid = &led_service_uuid.u,
+        .characteristics = (struct ble_gatt_chr_def[]){{
+                                                           .uuid = BLE_UUID16_DECLARE(0xA000),
+                                                           .flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_NOTIFY,
+                                                           .access_cb = ls_capabilities_read,
+                                                           .descriptors = char_0xA000_descs,
+                                                       },
+                                                       {
+                                                           .uuid = BLE_UUID16_DECLARE(0xDEAD),
+                                                           .flags = BLE_GATT_CHR_F_WRITE,
+                                                           .access_cb = ls_write,
+                                                           .descriptors = char_0xDEAD_descs,
+                                                       },
+                                                       {0}},
+    },
+    {0}};
+
+// BLE event handling
+static int ble_gap_event(struct ble_gap_event *event, void *arg)
+{
+    switch (event->type)
+    {
+    case BLE_GAP_EVENT_CONNECT:
+        ESP_LOGI(TAG, "BLE GAP EVENT CONNECT %s", event->connect.status == 0 ? "OK!" : "FAILED!");
+        if (event->connect.status != 0)
+        {
+            // Re-advertise if connection failed
+            ble_app_advertise();
+        }
+        break;
+
+    case BLE_GAP_EVENT_DISCONNECT:
+        ESP_LOGI(TAG, "BLE GAP EVENT DISCONNECTED");
+        // Re-advertise after disconnection
+        ble_app_advertise();
+        break;
+
+    case BLE_GAP_EVENT_ADV_COMPLETE:
+        ESP_LOGI(TAG, "BLE GAP EVENT ADV COMPLETE");
+        // Re-advertise to continue accepting new clients
+        ble_app_advertise();
+        break;
+
+    case BLE_GAP_EVENT_SUBSCRIBE:
+        ESP_LOGI(TAG,
+                 "BLE GAP EVENT SUBSCRIBE conn_handle=%d attr_handle=%d reason=%d "
+                 "prev_notify=%d cur_notify=%d prev_indicate=%d cur_indicate=%d",
+                 event->subscribe.conn_handle, event->subscribe.attr_handle, event->subscribe.reason,
+                 event->subscribe.prev_notify, event->subscribe.cur_notify, event->subscribe.prev_indicate,
+                 event->subscribe.cur_indicate);
+
+        // Check if subscription is for the capability characteristic's CCCD.
+        // The CCCD handle is typically the characteristic value handle + 1.
+        // g_capa_char_val_handle stores the handle of the characteristic value itself.
+        if (event->subscribe.attr_handle == g_capa_char_val_handle + 1)
+        {
+            if (event->subscribe.cur_notify)
+            {
+                ESP_LOGI(TAG, "Client subscribed to capability notifications. Sending data...");
+                // Call the function to send capability data via notifications
+                capa_notify_data(event->subscribe.conn_handle, g_capa_char_val_handle);
+            }
+            else
+            {
+                ESP_LOGI(TAG, "Client unsubscribed from capability notifications.");
+            }
+        }
+        break;
+
+    default:
+        break;
+    }
+    return 0;
+}
+
+// Define the BLE connection
+static void ble_app_advertise(void)
+{
+    int ret;
+
+    // GAP - advertising definition
+    struct ble_hs_adv_fields fields;
+    memset(&fields, 0, sizeof(fields));
+    fields.flags = BLE_HS_ADV_F_DISC_GEN | BLE_HS_ADV_F_BREDR_UNSUP;
+    fields.uuids128 = (ble_uuid128_t[]){capability_service_uuid};
+    fields.num_uuids128 = 1;
+    fields.uuids128_is_complete = 1;
+
+    ret = ble_gap_adv_set_fields(&fields);
+    if (ret != 0)
+    {
+        ESP_LOGE(TAG, "Failed to set advertising data (err: %d)", ret);
+        return;
+    }
+
+    // GAP - device connectivity definition
+    struct ble_gap_adv_params adv_params;
+    memset(&adv_params, 0, sizeof(adv_params));
+    adv_params.conn_mode = BLE_GAP_CONN_MODE_UND; // connectable or non-connectable
+    adv_params.disc_mode = BLE_GAP_DISC_MODE_GEN; // discoverable or non-discoverable
+    ret = ble_gap_adv_start(ble_addr_type, NULL, BLE_HS_FOREVER, &adv_params, ble_gap_event, NULL);
+    if (ret != 0)
+    {
+        ESP_LOGE(TAG, "Advertising failed to start (err %d)", ret);
+        return;
+    }
+
+    // --- Configure Scan Response Data (SCAN_RSP) ---
+    struct ble_hs_adv_fields scan_rsp_fields;
+    memset(&scan_rsp_fields, 0, sizeof(scan_rsp_fields));
+
+    // Get the device name
+    const char *device_name;
+    device_name = ble_svc_gap_device_name();
+    scan_rsp_fields.name = (uint8_t *)device_name;
+    scan_rsp_fields.name_len = strlen(device_name);
+    scan_rsp_fields.name_is_complete = 1;
+
+    // Optionally, add TX power level to scan response
+    scan_rsp_fields.tx_pwr_lvl = BLE_HS_ADV_TX_PWR_LVL_AUTO;
+    scan_rsp_fields.tx_pwr_lvl_is_present = 1;
+
+    ret = ble_gap_adv_rsp_set_fields(&scan_rsp_fields);
+    if (ret != 0)
+    {
+        ESP_LOGE(TAG, "Error setting scan response data; rc=%d", ret);
+        return;
+    }
+}
+
+// The application
+static void ble_app_on_sync(void)
+{
+    uint8_t ble_addr[6] = {0};
+    int ret = ble_hs_id_copy_addr(BLE_ADDR_PUBLIC, ble_addr, NULL);
+    if (ret != 0)
+    {
+        ESP_LOGE(TAG, "Failed to get BLE MAC address (err: %d)", ret);
+        return;
+    }
+
+    char formatted_name[32];
+    snprintf(formatted_name, sizeof(formatted_name), "Miniature Town %02X%02X", ble_addr[4], ble_addr[5]);
+    ble_svc_gap_device_name_set(formatted_name);
+
+    // Start Advertising
+    ble_hs_id_infer_auto(0, &ble_addr_type); // Determines the best address type automatically
+    ble_app_advertise();
+}
+
+// The infinite task
+static void host_task(void *param)
+{
+    nimble_port_run(); // This function will return only when nimble_port_stop() is executed
+}
+
+void ble_init(void)
+{
+    nimble_port_init();
+    ble_svc_gap_init();
+    ble_svc_gatt_init();
+    ble_gatts_count_cfg(gatt_svcs);
+    ble_gatts_add_svcs(gatt_svcs);
+
+    // Callback für Synchronisation
+    ble_hs_cfg.sync_cb = ble_app_on_sync;
+
+    nimble_port_freertos_init(host_task); // Start BLE-Host-Task
+}

firmware/components/storage/CMakeLists.txt

@@ -0,0 +1,6 @@
+idf_component_register(SRCS 
+                        "storage.c"
+                    INCLUDE_DIRS "include"
+                    PRIV_REQUIRES
+                        spiffs
+)

firmware/components/storage/include/storage.h

@@ -0,0 +1,55 @@
+#pragma once
+
+#include "esp_err.h"
+#include <sys/types.h> // For ssize_t
+
+/**
+ * @brief Initializes the SPIFFS filesystem.
+ * This function should be called once before any file operations.
+ * @return ESP_OK on success, error code otherwise.
+ */
+esp_err_t storage_init(void);
+
+/**
+ * @brief Unregisters the SPIFFS filesystem.
+ * This function should be called once when file operations are finished.
+ */
+void storage_uninit(void);
+
+/**
+ * @brief Reads a chunk of data from a file on SPIFFS.
+ * This function maintains internal state (file pointer) to allow reading
+ * the same file chunk by chunk across multiple calls.
+ *
+ * @param filename The path to the file to read (e.g., "/storage/my_file.txt").
+ *                 Must be the same filename for consecutive calls to read the same file.
+ * @param buffer   Buffer to store the read data. Must be large enough for max_bytes.
+ * @param max_bytes The maximum number of bytes to read in this call. Must be > 0.
+ * @return The number of bytes read on success (>= 0).
+ *         Returns 0 when the end of the file is reached.
+ *         Returns a negative value on error:
+ *         -1: Invalid input parameters (filename, buffer is NULL, or max_bytes is 0).
+ *         -2: Failed to open the file (first call for this filename).
+ *         -3: Filename mismatch with the currently open file (subsequent call).
+ *         -4: Read error occurred.
+ */
+ssize_t storage_read(const char *filename, char *buffer, size_t max_bytes);
+
+/**
+ * @brief Reads a chunk of data from a file on SPIFFS, starting at a specific offset.
+ * This function is stateless regarding an internally managed file pointer for sequential reads;
+ * it opens, seeks, reads, and closes the file on each call.
+ *
+ * @param filename The path to the file to read (e.g., "/storage/my_file.txt").
+ * @param buffer   Buffer to store the read data. Must be large enough for nbytes.
+ * @param offset   The offset in the file to start reading from.
+ * @param nbytes   The maximum number of bytes to read in this call. Must be > 0.
+ * @return The number of bytes read on success (>= 0).
+ *         Returns 0 when the end of the file is reached from the given offset.
+ *         Returns a negative value on error:
+ *         -1: Invalid input parameters (filename, buffer is NULL, nbytes is 0, or offset is negative).
+ *         -2: Failed to open the file.
+ *         -5: Seek error occurred.
+ *         -4: Read error occurred.
+ */
+ssize_t storage_read_at(const char *filename, char *buffer, off_t offset, size_t nbytes);

firmware/components/storage/storage.c

@@ -0,0 +1,139 @@
+#include "storage.h"
+
+#include "esp_log.h"
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "esp_spiffs.h"
+
+static const char *TAG = "storage";
+
+static FILE *s_current_file = NULL;
+static char s_current_filename[256] = {0}; // Buffer to store the current filename
+
+esp_err_t storage_init(void)
+{
+    ESP_LOGI(TAG, "Initializing SPIFFS");
+
+    esp_vfs_spiffs_conf_t conf = {
+        .base_path = "/storage",       // Path where the filesystem will be mounted
+        .partition_label = "storage",  // Partition label (must match partitions.csv)
+        .max_files = 5,                // Maximum number of files that can be open at the same time
+        .format_if_mount_failed = true // Format partition if mount fails
+    };
+
+    // Initialize and mount SPIFFS
+    esp_err_t ret = esp_vfs_spiffs_register(&conf);
+
+    if (ret != ESP_OK)
+    {
+        if (ret == ESP_FAIL)
+        {
+            ESP_LOGE(TAG, "Failed to mount or format filesystem");
+        }
+        else if (ret == ESP_ERR_NOT_FOUND)
+        {
+            ESP_LOGE(TAG, "Failed to find SPIFFS partition");
+        }
+        else
+        {
+            ESP_LOGE(TAG, "Failed to initialize SPIFFS (%s)", esp_err_to_name(ret));
+        }
+        return ret;
+    }
+
+    ESP_LOGI(TAG, "SPIFFS mounted");
+    return ESP_OK;
+}
+
+void storage_uninit(void)
+{
+    if (s_current_file != NULL)
+    {
+        // Log before clearing s_current_filename, using its value.
+        ESP_LOGW(TAG, "File '%s' was still open during uninit. Closing it.", s_current_filename);
+        fclose(s_current_file); // Close the file
+        s_current_file = NULL;
+        s_current_filename[0] = '\0';
+    }
+    esp_vfs_spiffs_unregister("storage");
+    ESP_LOGI(TAG, "SPIFFS unmounted");
+}
+
+ssize_t storage_read(const char *filename, char *buffer, size_t max_bytes)
+{
+    // Input validation
+    if (filename == NULL || filename[0] == '\0' || buffer == NULL || max_bytes == 0)
+    {
+        ESP_LOGE(TAG, "Invalid input parameters for storage_read");
+        return -1;
+    }
+
+    // If no file is currently open, open the requested one
+    if (s_current_file == NULL)
+    {
+        s_current_file = fopen(filename, "r");
+        if (s_current_file == NULL)
+        {
+            ESP_LOGE(TAG, "Failed to open file for reading: %s", filename);
+            s_current_filename[0] = '\0'; // Clear filename as open failed
+            return -2;                    // Failed to open file
+        }
+        // Store the filename for subsequent calls
+        strncpy(s_current_filename, filename, sizeof(s_current_filename) - 1);
+        s_current_filename[sizeof(s_current_filename) - 1] = '\0';
+        ESP_LOGI(TAG, "Opened file: %s", s_current_filename);
+    }
+    else
+    {
+        // If a file is open, ensure it's the same file requested
+        if (strcmp(filename, s_current_filename) != 0)
+        {
+            ESP_LOGE(TAG, "Filename mismatch. Expected '%s', got '%s'. Close the current file first.",
+                     s_current_filename, filename);
+            // Note: File remains open. Caller might need a separate close function
+            // or ensure read loop finishes (returns 0 or error) before changing filename.
+            return -3; // Filename mismatch
+        }
+    }
+
+    // Read a chunk
+    size_t bytes_read = fread(buffer, 1, max_bytes, s_current_file);
+
+    // Check for read errors
+    if (ferror(s_current_file))
+    {
+        ESP_LOGE(TAG, "Error reading file: %s", s_current_filename);
+        fclose(s_current_file);
+        s_current_file = NULL;
+        s_current_filename[0] = '\0';
+        return -4; // Read error
+    }
+
+    // If fread returns 0 and it's not an error, it means EOF or an empty file.
+    // The file should be closed only when no more bytes can be read (i.e., bytes_read == 0).
+    if (bytes_read == 0) // Indicates EOF or empty file (and no ferror)
+    {
+        // Log before clearing s_current_filename.
+        // feof(s_current_file) should be true if end of file was actually reached.
+        if (feof(s_current_file))
+        {
+            ESP_LOGI(TAG, "EOF reached for file: %s. Closing file.", s_current_filename);
+        }
+        else
+        {
+            ESP_LOGI(TAG, "Read 0 bytes from file: %s (possibly empty or already at EOF). Closing file.",
+                     s_current_filename);
+        }
+        fclose(s_current_file);
+        s_current_file = NULL;
+        s_current_filename[0] = '\0';
+        // Return 0 as per contract: "Returns 0 when the end of the file is reached."
+    }
+    // If bytes_read > 0, return the number of bytes read.
+    // The file remains open (even if EOF was hit during this read and bytes_read < max_bytes).
+    // The next call to storage_read for this file will then result in fread returning 0,
+    // which will then hit the (bytes_read == 0) condition above and close the file.
+    return bytes_read;
+}

firmware/data/capability.json

@@ -0,0 +1,47 @@
+{
+    "module": "Miniature Town",
+    "capabilities": [
+        {
+            "id": 0,
+            "type": "toggle",
+            "default": "0",
+            "label": "L8"
+        },
+        {
+            "id": 1,
+            "type": "toggle",
+            "default": "0",
+            "label": "L8"
+        },
+        {
+            "id": 2,
+            "type": "toggle",
+            "default": "0",
+            "label": "L8"
+        },
+        {
+            "id": 3,
+            "type": "toggle",
+            "default": "0",
+            "label": "L8"
+        },
+        {
+            "id": 4,
+            "type": "toggle",
+            "default": "0",
+            "label": "L8"
+        },
+        {
+            "id": 5,
+            "type": "toggle",
+            "default": "0",
+            "label": "L8"
+        },
+        {
+            "id": 6,
+            "type": "toggle",
+            "default": "0",
+            "label": "L8"
+        }
+    ]
+}

firmware/main/CMakeLists.txt

@@ -0,0 +1,12 @@
+idf_component_register(SRCS 
+                    main.c
+                    INCLUDE_DIRS "."
+                    PRIV_REQUIRES
+                        driver
+                        esp_timer
+                        led_strip
+                        led_matrix
+                        remote_control
+                        persistence
+)
+spiffs_create_partition_image(storage ../data FLASH_IN_PROJECT)

firmware/main/main.c

@@ -1,14 +1,11 @@
+#include "freertos/FreeRTOS.h"
 #include "led_matrix.h"
 #include "persistence.h"
 #include "remote_control.h"
 
-#include "freertos/FreeRTOS.h"
-#include "freertos/task.h"
-
 void app_main(void)
 {
     persistence_init("miniature_town");
-
+    ble_init();
     xTaskCreatePinnedToCore(led_matrix_init, "led_matrix", configMINIMAL_STACK_SIZE * 2, NULL, 5, NULL, 1);
-    ble_init(NULL);
 }

firmware/partitions.csv

@@ -3,5 +3,5 @@ nvs      , data , nvs      , 0x9000  ,   20k ,
 otadata  , data , ota      , 0xe000  ,    8k ,
 app0     , app  , ota_0    , 0x10000 , 1024k ,
 app1     , app  , ota_1    ,         , 1024k ,
-spiffs   , data , spiffs   ,         , 1536k ,
+storage  , data , spiffs   ,         , 1536k ,
 coredump , data , coredump ,         ,   64k ,

firmware/sdkconfig.defaults

@@ -2,7 +2,8 @@
 CONFIG_BT_ENABLED=y
 CONFIG_BT_NIMBLE_ENABLED=y
 
-# nimble options
+# NimBLE Options
+CONFIG_BT_NIMBLE_SECURITY_ENABLE=n
 CONFIG_BT_NIMBLE_SVC_GAP_DEVICE_NAME="miniature"
 
 # Logging

firmware/sdkconfig.defaults.esp32c5

@@ -0,0 +1,2 @@
+# default ESP target
+CONFIG_IDF_TARGET="esp32c5"

firmware/sdkconfig.defaults.esp32c6

@@ -0,0 +1,2 @@
+# default ESP target
+CONFIG_IDF_TARGET="esp32c6"

firmware/sdkconfig.defaults.esp32h2

@@ -0,0 +1,2 @@
+# default ESP target
+CONFIG_IDF_TARGET="esp32h2"

firmware/sdkconfig.defaults.esp32p4

@@ -0,0 +1,2 @@
+# default ESP target
+CONFIG_IDF_TARGET="esp32p4"

main/CMakeLists.txt

@@ -1,7 +0,0 @@
-idf_component_register(SRCS "main.c"
-                    INCLUDE_DIRS "."
-                    PRIV_REQUIRES
-                        led_matrix
-                        remote_control
-                        persistence
-)