Add instructions for the external loader

README.md

@@ -6,6 +6,7 @@
  - [Style Guide](#style-guide)
    - [Editor Configuration](#editor-configuration)
  - [Commit Messages Conventions](#commit-messages-conventions)
+ - [Writing File System Data to QSPI Flash](#writing-file-system-data-to-qspi-flash)
  - [Documentation](#documentation)
 
 ## Used Libs, Compiler and Apps
@@ -52,6 +53,10 @@ Implement access right management
 
 The body of a commit message may be used to explain the what and why of a commit.
 
+## Writing File System Data to QSPI Flash
+Please read the [llfs.md](./docs/llfs.md#enabling-the-external-loader-in-stm32cubeide) document for instructions
+on how to enable the external loader in STM32CubeIDE.
+
 ## Documentation
 Documentation is placed in the [docs](docs) folder.
 If your part needs documentation (e.g. how to use tcp cmd interface), add a markdown file in the above-mentioned folder.

docs/llfs.md

@@ -24,6 +24,7 @@ restricting operations solely to read functions.
    - [Reading a file](#reading-a-file)
    - [Getting the number of files](#getting-the-number-of-files)
  - [Using the POSIX file functions](#using-the-posix-file-functions)
+ - [Enabling the external loader in STM32CubeIDE](#enabling-the-external-loader-in-stm32cubeide)
 
 ## Initialization
 Before using the llfs API, or the file related POSIX (fopen, fgetc, ...) functions, the filesystem must be initialized by calling `llfs_init()`.
@@ -161,3 +162,15 @@ The following functions are tested and working, but other functions might also w
  - `rewind`
  - `fstat`
  - `fileno`
+
+## Enabling the external loader in STM32CubeIDE
+In order to write the file system data to the QSPI flash, the external loader must be enabled in STM32CubeIDE.
+This can be done by opening the debug configuration:
+![](img\ext_loader_step_1.png)
+
+Then, in the `Debugger` tab:
+3. Enable the `External Loader`
+4. Click the `Scan` button
+5. Select the correct loader: `N25Q128A_STM32F746G-DISCO, 0x90000000 ...`
+
+![](img\ext_loader_step_2.png)