load image from file and storage

from storage doesn't work yet, because of memory issues

firmware/main/main.cpp

@@ -1,12 +1,12 @@
 #include <lgfx.h>
 #include <lvgl.h>
 
-#include "esp_vfs.h"
-#include "esp_vfs_fat.h"
 #include "esp_err.h"
 #include "esp_log.h"
 
+#include "ff.h"
 #include "image.h"
+#include "storage.h"
 
 #define screenWidth (480)
 #define screenHeight (320)
@@ -16,9 +16,9 @@ uint8_t lvBuffer1[lvBufferSize];
 uint8_t lvBuffer2[lvBufferSize];
 
 static const char *TAG = "main";
-const char *base_path = "/storage";
 
 LGFX tft;
+static FATFS fs;
 
 void setup_tft(void)
 {
@@ -52,71 +52,25 @@ void my_touch_read(lv_indev_t *indev_driver, lv_indev_data_t *data)
     }
 }
 
-void lv_handler()
+void fatfs_lvgl_init(void)
 {
-    static uint64_t previousUpdate = 0;
-    static uint64_t interval = 0;
+    // 1. Das Dateisystem "mounten" (einmalig für FatFS)
+    f_mount(&fs, "S:", 1); // "S:" ist der Laufwerksbuchstabe
 
-    uint64_t eus = esp_timer_get_time();
-    if (eus - previousUpdate > interval)
-    {
-        previousUpdate = eus;
-        interval = lv_timer_handler(); // Update the UI
-        lv_tick_inc(interval);
-        vTaskDelay(pdMS_TO_TICKS(interval - 1));
-    }
-}
+    // 2. Eine Treiber-Variable deklarieren
+    static lv_fs_drv_t drv;
+    lv_fs_drv_init(&drv); // Treiberstruktur initialisieren
 
-void setup_fatfs()
-{
-    const esp_vfs_fat_mount_config_t mount_config = {
-        .format_if_mount_failed = false,
-        .max_files = 4,
-        .allocation_unit_size = CONFIG_WL_SECTOR_SIZE,
-        .disk_status_check_enable = false,
-        .use_one_fat = false,
-    };
+    // 3. Unsere Bridge-Funktionen zuweisen
+    drv.letter = 'S'; // WICHTIG: Muss mit dem Buchstaben in f_mount übereinstimmen
+    drv.open_cb = fs_open;
+    drv.close_cb = fs_close;
+    drv.read_cb = fs_read;
+    drv.seek_cb = fs_seek;
+    drv.tell_cb = fs_tell;
 
-    ESP_LOGI(TAG, "Mounting FAT filesystem in read/write mode");
-    static wl_handle_t wl_handle = WL_INVALID_HANDLE;
-    esp_err_t err = esp_vfs_fat_spiflash_mount_rw_wl(base_path, "storage", &mount_config, &wl_handle);
-
-    if (err != ESP_OK)
-    {
-        ESP_LOGE(TAG, "Failed to mount FATFS (%s)", esp_err_to_name(err));
-        return;
-    }
-
-    FILE *f;
-    ESP_LOGI(TAG, "Reading file");
-
-    const char *host_filename1 = "/storage/response.png";
-
-    struct stat info;
-    struct tm timeinfo;
-    char buffer[32];
-
-    if (stat(host_filename1, &info) < 0)
-    {
-        ESP_LOGE(TAG, "Failed to read file stats");
-        return;
-    }
-    localtime_r(&info.st_mtime, &timeinfo);
-    strftime(buffer, sizeof(buffer), "%Y-%m-%d", &timeinfo);
-
-    ESP_LOGI(TAG, "The file '%s' was modified at date: %s", host_filename1, buffer);
-
-    f = fopen(host_filename1, "rb");
-    if (f == NULL)
-    {
-        ESP_LOGE(TAG, "Failed to open file for reading");
-        return;
-    }
-    fclose(f);
-
-    ESP_LOGI(TAG, "Unmounting FAT filesystem");
-    ESP_ERROR_CHECK(esp_vfs_fat_spiflash_unmount_rw_wl(base_path, wl_handle));
-    ESP_LOGI(TAG, "Done");
+    // 4. Den Treiber bei LVGL registrieren
+    lv_fs_drv_register(&drv);
 }
 
 void esp_lv_log_print(lv_log_level_t level, const char *buf)
@@ -145,14 +99,15 @@ void esp_lv_log_print(lv_log_level_t level, const char *buf)
 
 void setup()
 {
-    setup_fatfs();
-
     setup_tft();
 
     lv_init();
 
     lv_log_register_print_cb(esp_lv_log_print);
 
+    fs_mount();
+    fatfs_lvgl_init();
+
     static auto *display = lv_display_create(screenWidth, screenHeight);
     lv_display_set_color_format(display, LV_COLOR_FORMAT_RGB565);
     lv_display_set_flush_cb(display, flush);
@@ -163,15 +118,23 @@ void setup()
     lv_indev_set_read_cb(lvInput, my_touch_read);
 
     ESP_LOGI(TAG, "create image");
+#ifndef LOCAL
     static auto *image = lv_image_create(lv_scr_act());
     lv_image_set_src(image, &image_data);
     lv_obj_align(image, LV_ALIGN_TOP_LEFT, 0, 0);
+#else
+    lv_obj_t *img = lv_image_create(lv_screen_active());
+    lv_image_set_src(img, "S:/response.png"); // Pfad beginnt mit "S:"
+    lv_obj_center(img);
+#endif
     ESP_LOGI(TAG, "image created");
 }
 
 void loop()
 {
-    lv_handler();
+    lv_tick_inc(10);
+    lv_timer_handler();
+    vTaskDelay(pdMS_TO_TICKS(10));
 }
 
 void lvgl_task(void *pvParameter)
@@ -181,9 +144,10 @@ void lvgl_task(void *pvParameter)
     {
         loop();
     }
+    fs_unmount();
 }
 
 extern "C" void app_main(void)
 {
-    xTaskCreatePinnedToCore(lvgl_task, "lvgl_task", 4096, NULL, 5, NULL, 1);
+    xTaskCreatePinnedToCore(lvgl_task, "lvgl_task", 8192, NULL, 5, NULL, 1);
 }