Audio added to firmware, Website File handling

firmware/libs/fs_mgmt/include/fs_mgmt.h

@@ -4,32 +4,43 @@
 #include <zephyr/fs/fs.h>
 #include "buzz_proto.h"
 
-#define FS_MGMT_MAX_PATH_LENGTH 32
 #define FS_AUDIO_PATH CONFIG_FS_MGMT_MOUNT_POINT CONFIG_FS_MGMT_AUDIO_SUBDIR
 #define FS_SYSTEM_PATH CONFIG_FS_MGMT_MOUNT_POINT CONFIG_FS_MGMT_SYSTEM_SUBDIR
 
-/**
- * @brief Initializes the filesystem management module.
- */
-int fs_mgmt_init(void);
+#define MAX_FILE_NAME_LEN(target, path) \
+    ((int)(sizeof(target) - (sizeof(path)) - 1))
 
+/** @brief Assemble a full path from a base path and a filename
+ * Ensures that the resulting path fits into the target buffer and is null-terminated. If the filename is too long, it will be truncated to fit.
+ * @param buffer Target buffer to hold the assembled path
+ * @param path Base path (e.g. "/sys" or "/audio")
+ * @param filename Name of the file to append to the base path
+ */
+#define FS_MGMT_ASSEMBLE_PATH(buffer, path, filename) \
+    snprintf(buffer, sizeof(buffer),                  \
+             "%s/%.*s",                               \
+             path,                                    \
+             MAX_FILE_NAME_LEN(buffer, path),         \
+             filename)
 
 /**
  * @brief OP-Codes for the FS write thread
  */
-enum fs_write_op {
+enum fs_write_op
+{
     FS_WRITE_OP_FILE_START,
     FS_WRITE_OP_FILE_CHUNK,
     FS_WRITE_OP_FILE_END,
-    FS_WRITE_OP_TAGS_START,   // Schon mal vorgesehen
-    FS_WRITE_OP_FW_START,     // Schon mal vorgesehen
+    FS_WRITE_OP_TAGS_START, // Schon mal vorgesehen
+    FS_WRITE_OP_FW_START,   // Schon mal vorgesehen
     FS_WRITE_OP_ABORT
 };
 
 /**
  * @brief Structure representing a write message for the FS write thread
  */
-struct fs_write_msg {
+struct fs_write_msg
+{
     enum fs_write_op op;
     uint8_t *slab_ptr;                /* Basis-Pointer des Memory-Slabs (für k_mem_slab_free) */
     uint16_t data_offset;             /* Offset ab dem slab_ptr, wo die Nutzdaten beginnen */
@@ -135,7 +146,7 @@ int fs_mgmt_pm_rm_recursive(char *path, size_t max_len);
  * @param fp Pointer to an open fs_file_t structure representing the file
  * @return Length of the audio data on success, negative error code on failure
  */
-ssize_t fs_get_audio_data_len(struct fs_file_t *fp);
+ssize_t fs_mgmt_get_audio_data_len(struct fs_file_t *fp);
 
 /**
  * @brief Submits a write message to the FS write thread, which will handle writing data to the filestem asynchronously, ensuring the flash is active during the operation