Merge branch 'main' of https://github.com/Sani7/2023-Webservices_And_Applications

.gitignore

@@ -31,8 +31,30 @@
 *.out
 *.app
 
+# Log files
+*.log
+
+# Metadata directories
+.metadata/
+project/.metadata
+
+# Test files
+project/Core/Inc/stlogo.h
+project/Core/Inc/test_img.h
+project/Core/Inc/test_data.h
+
 project/Debug/
 
 project/.idea/
 
 project/cmake-build-debug/
+
+project/.settings/
+
+project/.mxproject
+
+project/project.launch
+
+project/Scripts
+Scripts/
+project/project\ Debug.launch

README.md

@@ -21,9 +21,9 @@ This way we can keep the code clean.
 [tasks_and_taskowners.md](tasks_and_taskowners.md)
 
 ## Style Guide
-To maintain a consistent and clean codebase, follow the [style guide](style_guide.md). This document provides detailed instructions on naming conventions, code structure, and commenting practices.
+To maintain a consistent and clean codebase, follow the [style guide](docs/style_guide.md). This document provides detailed instructions on naming conventions, code structure, and commenting practices.
 
-Please read the [style_guide.md](style_guide.md) carefully before making contributions.
+Please read the [style_guide.md](docs/style_guide.md) carefully before making contributions.
 
 ### Editor Configuration
 
@@ -57,4 +57,7 @@ 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.
 
 This folder contains the following documents:
+- [llfs.md](docs/llfs.md): Linked List File System
 - [logger.md](docs/logger.md): Logging and Debugging Messages
+- [mkllfs.md](docs/mkllfs.md): Make Linked List File System
+- [style_guide.md](docs/style_guide.md): Style Guide

docs/lcd_api.md

@@ -0,0 +1,92 @@
+# LCD API
+
+## Introduction
+
+The LCD API can be used to display BMP images or text onto the LCD screen.
+At the moment of writing, only BMP's in C array's are supported.
+Supported color schemes for BMP's are ARGB8888, RGB565, RGB888.
+Displayed text that is exceeds the LCD width size, will be wrapped onto the next line and a '-' character will be injected if the wrap occurs within a word.
+
+## Usage of LCD API
+### Generating BMP C header files
+#### Resizing images
+To resize an image to the desired size (width and height), one can use an image editor such as Photoshop, GIMP, ImageMagick, ... .
+
+For example, using ImageMagick:
+```bash
+convert in.png -resize 10% BMP3:out.bmp
+#OR (depending on the version of ImageMagick)
+magick in.png -resize 50x50 out.png
+```
+
+The resize option can both be used to resize in percentages or in pixels.
+
+The BMP3 option is used to convert the PNG to Bitmap version 3.0 (note that the BMP header will still be present in the output image).
+
+#### Generating the C array
+To easily generate a BMP C array (in the desired color scheme) from an image, [lv_img_conv](https://github.com/lvgl/lv_img_conv) can be used.
+
+See the installation instructions on Github or use the [online version](https://lvgl.io/tools/imageconverter).
+
+Example:
+```bash
+./lv_img_conv.js test.png -f -c CF_TRUE_COLOR
+```
+
+The command above will generate a .c file in which arrays can be found for RGB332, RGB565, ARGB8888. It is also possible to generate a binary BMP image file in ARGB8332, ARGB8565, ARGB8565_RBSWAP, ARGB8888.
+```bash
+./lv_img_conv.js logo_lvgl.png -f -c CF_TRUE_COLOR -t bin --binary-format ARGB8888
+```
+
+### Using the LCD API
+#### Initialization of LCD API
+The `lcd_init(bool bl_on)` function initialises the LCD screen. The `bl_on` variable allows to enable or disable the LCD backlight.
+```c
+#include "lcd_api.h"
+
+...
+
+void main(void) {
+    ...
+    lcd_init(true);
+    ...
+}
+```
+
+#### Drawing text on the screen
+
+```c
+void lcd_display_text(const char* text, uint16_t x_pos, uint16_t y_pos, uint32_t color, uint32_t bg_color, sFONT *font);
+```
+
+```c
+#include "lcd_api.h"
+
+...
+
+void main(void) {
+    ...
+    lcd_init(true);
+    ...
+    lcd_display_text("This is a text string.", 10, 10, LCD_GREEN, LCD_BLACK, LCD_FONT16);
+}
+```
+Display text on the LCD screen in a certain color. When text width exceeds BSP_LCD_GetXSize(), a text wrap will be performed. If the text wrap is between two will be injected.
+
+#### Drawing a BMP (C-array) onto the screen
+```c
+void lcd_draw_bmp(const void* p_src, uint32_t x_pos, uint32_t y_pos, uint32_t x_size, uint32_t y_size, uint32_t color_mode);
+```
+
+```c
+#include "lcd_api.h"
+#include "test_image.h"
+
+void main(void) {
+  ...
+  lcd_init(true);
+  ...
+  lcd_draw_bmp(bmp_array, 0, 0, 50, 50, LCD_ARGB8888);
+}
+```
+Draw BMP image from C array to the LCD screen at position X, Y. In color mode ARGB8888, RGB888, RGB565 or ARGB1555 Supports ARGB8888, RGB565, RGB888 (see LCD_* defines in header file).

docs/llfs.md

@@ -0,0 +1,163 @@
+# LLFS (Linked List File System)
+
+## Introduction
+The llfs filesystem can be generated using the [mkllfs](mkllfs.md) utility.
+The resulting C file encapsulates the filesystem data within a linked list which can be used by the llfs library.
+
+As a flat filesystem, llfs lacks support for directories. 
+Using the llfs API, information about the files in the filesystem can be retrieved,
+and the files can be read using direct memory access.
+Alternatively, the POSIX file functions can be used. 
+But this is more resource intensive, as data must be copied before using it.
+
+It's essential to note that the llfs filesystem operates in a read-only mode,
+restricting operations solely to read functions.
+
+## Table of contents
+ - [Introduction](#introduction)
+ - [Table of contents](#table-of-contents)
+ - [Initialization](#initialization)
+ - [Usage of the llfs API](#usage-of-the-llfs-api)
+   - [The `llfs_file_t` struct](#the-llfs_file_t-struct)
+   - [Getting a list of files](#getting-a-list-of-files)
+     - [Iterator function (not recommended)](#iterator-function-not-recommended)
+   - [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)
+
+## Initialization
+Before using the llfs API, or the file related POSIX (fopen, fgetc, ...) functions, the filesystem must be initialized by calling `llfs_init()`.
+
+## Usage of the llfs API
+### The `llfs_file_t` struct
+The `llfs_file_t` struct contains information about a file in the filesystem.
+```c
+typedef struct {
+    const uint8_t* data; // Pointer to the file data (len bytes)
+    const char* name;    // Null-terminated string with the filename
+    size_t len;          // Length of the file data
+} llfs_file_t;
+```
+The data pointer points to the data of the file in the filesystem, and can be used to read the file.
+
+### Getting a list of files
+```c
+#include "llfs.h"
+
+void main(void) {
+    llfs_init();
+    
+    // Allocate space for 10 files
+    llfs_file_t file_list[10];
+    
+    // Get the file list
+    size_t file_count = llfs_file_list(file_list, 10, NULL);
+    
+    // Loop through the files and print their names and sizes
+    for (int i = 0; i < file_count; i++) {
+        LOG_INFO(TAG, "File: %s, size: %d", file_list[i].name, file_list[i].len);
+    }
+}
+```
+Result:
+```
+[Info]      (2009) [main]: File: image.bmp, size: 9270
+[Info]      (2013) [main]: File: python_file.py, size: 645
+[Info]      (2019) [main]: File: image2.bmp, size: 7738
+[Info]      (2024) [main]: File: filename with a space.txt, size: 61
+[Info]      (2031) [main]: File: file1.txt, size: 77
+```
+
+It is also possible to use a file extension filter (e.g. `*.bmp`, `*.txt`, `*.py`).
+```c
+    // ...
+    size_t file_count = llfs_file_list(file_list, 10, "*.bmp");
+    // ...
+```
+This will only return files with the `.bmp` extension.
+````
+[Info]      (2009) [main]: File: image.bmp, size: 9270
+[Info]      (2019) [main]: File: image2.bmp, size: 7738
+````
+
+#### Iterator function (not recommended)
+It is also possible to iterate through the files without allocating an array.
+When the memory pointer is `NULL`, the iterator will start at the beginning of the file list. 
+Each call to `llfs_next_file()` will return the next file in the list,
+if a filter is specified files that don't match the filter will be skipped.
+```c
+#include "llfs.h"
+
+void main(void) {
+    llfs_init();
+    
+    // Get the file list
+    void* mem = NULL;   // Pointer for internal use by the llfs library
+    llfs_file_t* file;
+    while ((file = llfs_next_file(&mem, ".bmp")) != NULL) {
+        LOG_INFO(TAG, "File: %s", file->name);
+    }
+}
+```
+While this method doesn't require allocating memory for the file list,
+it is slower than the previous method due to the overhead calling the function for each file.
+Additionally, the required memory for the filelist is very small, so it's recommended to use the first method. 
+
+### Reading a file
+```c
+#include "llfs.h"
+
+void main(void) {
+    llfs_init();
+    
+    // Get a file by name
+    llfs_file_t* file = llfs_file_open("filename with a space.txt");
+    
+    if (file != NULL) {
+        // Print the file name, size and data
+        LOG_INFO(TAG, "File found: %s, size: %d", file->name, file->len);
+        LOG_INFO(TAG, "File data: %s", file->data);
+    } else {
+        LOG_WARN(TAG, "File not found");
+    }
+}
+```
+Result:
+```
+[Info]      (2040) [main]: File found: filename with a space.txt, size: 61
+[Info]      (2047) [main]: File data: This is a file with a space in it's filename.
+```
+
+### Getting the number of files
+```c
+#include "llfs.h"
+
+void main(void) {
+    llfs_init();
+    
+    // Get the number of files
+    size_t file_count = llfs_file_count();
+    
+    // Print the number of files
+    LOG_INFO(TAG, "File count: %d", file_count);
+}
+```
+
+## Using the POSIX file functions
+The llfs library also supports the POSIX file functions.
+As the file system is read-only, write functions are not implemented.
+There is also a limit on the number of files that can be open concurrently,
+this is set by the `POSIX_MAX_FILES` macro in `llfs.c`. 
+The default value is 10, but there are already 3 files in use (stdin, stdout, stderr),
+so the maximum number of files that can be open is 7.
+
+The following functions are tested and working, but other functions might also work:
+ - `fopen`
+ - `fclose`
+ - `fgetc`
+ - `fread`
+ - `fseek`
+ - `ftell`
+ - `rewind`
+ - `fstat`
+ - `fileno`

project/.clang-format

@@ -0,0 +1,69 @@
+---
+AlignAfterOpenBracket: Align
+AlignConsecutiveMacros: true
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: Left
+AlignOperands: true
+AlignTrailingComments: true
+AllowAllArgumentsOnNextLine: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: None
+AllowShortIfStatementsOnASingleLine: Never
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+BinPackArguments: true
+BinPackParameters: false
+BreakBeforeBinaryOperators: NonAssignment
+BreakBeforeBraces: Attach
+BreakBeforeTernaryOperators: true
+BreakStringLiterals: true
+ColumnLimit: 120
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+DerivePointerAlignment: false
+DisableFormat: false
+ExperimentalAutoDetectBinPacking: false
+IncludeBlocks: Preserve
+IncludeCategories:
+  - Regex: "^<(.*)>"
+    Priority: 0
+  - Regex: ^"(.*)"
+    Priority: 1
+  - Regex: "(.*)"
+    Priority: 2
+IncludeIsMainRegex: "(_test)?$"
+IndentCaseLabels: true
+IndentPPDirectives: None
+IndentWidth: 4
+IndentWrappedFunctionNames: false
+KeepEmptyLinesAtTheStartOfBlocks: false
+Language: Cpp
+MaxEmptyLinesToKeep: 1
+PenaltyBreakAssignment: 2
+PenaltyBreakBeforeFirstCallParameter: 19
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyBreakTemplateDeclaration: 10
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 1000
+PointerAlignment: Left
+ReflowComments: true
+SortIncludes: true
+SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+TabWidth: 4
+UseTab: Never
+UseCRLF: false
+...

project/.cproject

@@ -24,7 +24,7 @@
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+							<option id="com.st.stm32cube.ide.mcu.debug.option.cpuclock.1771148873" name="Cpu clock frequence" superClass="com.st.stm32cube.ide.mcu.debug.option.cpuclock" useByScannerDiscovery="false" value="200" valueType="string"/>
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 							<builder buildPath="${workspace_loc:/project}/Debug" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.builder.1463828525" keepEnvironmentInBuildfile="false" managedBuildOn="true" name="Gnu Make Builder" parallelBuildOn="true" parallelizationNumber="optimal" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.builder"/>
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@@ -91,11 +91,12 @@
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 						</toolChain>
 					</folderInfo>
+					<fileInfo id="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.debug.1923792012.2015795402" name="test_data.h" rcbsApplicability="disable" resourcePath="Core/Inc/test_data.h" toolsToInvoke=""/>
 					<sourceEntries>
 						<entry excluding="Inc/fsdata_custom.c" flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Core"/>
+						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Drivers"/>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="LWIP"/>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Middlewares"/>
-						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Drivers"/>
 					</sourceEntries>
 				</configuration>
 			</storageModule>
@@ -117,28 +118,28 @@
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+							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_board.1749227860" name="Board" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_board" useByScannerDiscovery="false" value="STM32F746G-DISCO" valueType="string"/>
-							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.defaults.752119389" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.defaults" useByScannerDiscovery="false" value="com.st.stm32cube.ide.common.services.build.inputs.revA.1.0.6 || Release || false || Executable || com.st.stm32cube.ide.mcu.gnu.managedbuild.option.toolchain.value.workspace || STM32F746G-DISCO || 0 || 0 || arm-none-eabi- || ${gnu_tools_for_stm32_compiler_path} || ../LWIP/App | ../LWIP/Target | ../Core/Inc | ../Middlewares/Third_Party/LwIP/src/include | ../Middlewares/Third_Party/LwIP/system | ../Drivers/STM32F7xx_HAL_Driver/Inc | ../Drivers/STM32F7xx_HAL_Driver/Inc/Legacy | ../Drivers/BSP/Components/lan8742 | ../Middlewares/Third_Party/LwIP/src/include/netif/ppp | ../Middlewares/Third_Party/LwIP/src/apps/http | ../Drivers/CMSIS/Device/ST/STM32F7xx/Include | ../Middlewares/Third_Party/LwIP/src/include/lwip | ../Middlewares/Third_Party/LwIP/src/include/lwip/apps | ../Middlewares/Third_Party/LwIP/src/include/lwip/priv | ../Middlewares/Third_Party/LwIP/src/include/lwip/prot | ../Middlewares/Third_Party/LwIP/src/include/netif | ../Middlewares/Third_Party/LwIP/src/include/compat/posix | ../Middlewares/Third_Party/LwIP/src/include/compat/posix/arpa | ../Middlewares/Third_Party/LwIP/src/include/compat/posix/net | ../Middlewares/Third_Party/LwIP/src/include/compat/posix/sys | ../Middlewares/Third_Party/LwIP/src/include/compat/stdc | ../Middlewares/Third_Party/LwIP/system/arch | ../Drivers/CMSIS/Include ||  ||  || USE_HAL_DRIVER | STM32F746xx ||  || LWIP | Drivers | Core/Startup | Middlewares | Core ||  ||  || ${workspace_loc:/${ProjName}/STM32F746NGHX_FLASH.ld} || true || NonSecure ||  || secure_nsclib.o ||  || None ||  ||  || " valueType="string"/>
+							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.defaults.752119389" name="Defaults" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.defaults" useByScannerDiscovery="false" value="com.st.stm32cube.ide.common.services.build.inputs.revA.1.0.6 || Release || false || Executable || com.st.stm32cube.ide.mcu.gnu.managedbuild.option.toolchain.value.workspace || STM32F746G-DISCO || 0 || 0 || arm-none-eabi- || ${gnu_tools_for_stm32_compiler_path} || ../LWIP/App | ../LWIP/Target | ../Core/Inc | ../Middlewares/Third_Party/LwIP/src/include | ../Middlewares/Third_Party/LwIP/system | ../Drivers/STM32F7xx_HAL_Driver/Inc | ../Drivers/STM32F7xx_HAL_Driver/Inc/Legacy | ../Drivers/BSP/Components/lan8742 | ../Middlewares/Third_Party/LwIP/src/include/netif/ppp | ../Middlewares/Third_Party/LwIP/src/apps/http | ../Drivers/CMSIS/Device/ST/STM32F7xx/Include | ../Middlewares/Third_Party/LwIP/src/include/lwip | ../Middlewares/Third_Party/LwIP/src/include/lwip/apps | ../Middlewares/Third_Party/LwIP/src/include/lwip/priv | ../Middlewares/Third_Party/LwIP/src/include/lwip/prot | ../Middlewares/Third_Party/LwIP/src/include/netif | ../Middlewares/Third_Party/LwIP/src/include/compat/posix | ../Middlewares/Third_Party/LwIP/src/include/compat/posix/arpa | ../Middlewares/Third_Party/LwIP/src/include/compat/posix/net | ../Middlewares/Third_Party/LwIP/src/include/compat/posix/sys | ../Middlewares/Third_Party/LwIP/src/include/compat/stdc | ../Middlewares/Third_Party/LwIP/system/arch | ../Drivers/CMSIS/Include ||  ||  || USE_HAL_DRIVER | STM32F746xx ||  || LWIP | Drivers | Core/Startup | Middlewares | Core ||  ||  || ${workspace_loc:/${ProjName}/STM32F746NGHX_FLASH.ld} || true || NonSecure ||  || secure_nsclib.o ||  || None ||  ||  || " valueType="string"/>
-							<option id="com.st.stm32cube.ide.mcu.debug.option.cpuclock.692149734" superClass="com.st.stm32cube.ide.mcu.debug.option.cpuclock" useByScannerDiscovery="false" value="200" valueType="string"/>
+							<option id="com.st.stm32cube.ide.mcu.debug.option.cpuclock.692149734" name="Cpu clock frequence" superClass="com.st.stm32cube.ide.mcu.debug.option.cpuclock" useByScannerDiscovery="false" value="200" valueType="string"/>
 							<targetPlatform archList="all" binaryParser="org.eclipse.cdt.core.ELF" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.targetplatform.31610660" isAbstract="false" osList="all" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.targetplatform"/>
-							<builder buildPath="${workspace_loc:/project}/Release" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.builder.525679761" managedBuildOn="true" name="Gnu Make Builder.Release" parallelBuildOn="true" parallelizationNumber="optimal" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.builder"/>
+							<builder buildPath="${workspace_loc:/project}/Release" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.builder.525679761" keepEnvironmentInBuildfile="false" managedBuildOn="true" name="Gnu Make Builder" parallelBuildOn="true" parallelizationNumber="optimal" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.builder"/>
 							<tool id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.936753340" name="MCU GCC Assembler" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler">
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.debuglevel.968854718" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.debuglevel" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.debuglevel.value.g0" valueType="enumerated"/>
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.debuglevel.968854718" name="Debug level" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.debuglevel" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.option.debuglevel.value.g0" valueType="enumerated"/>
 								<inputType id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.input.1789271480" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.assembler.input"/>
 							</tool>
 							<tool id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.62369603" name="MCU GCC Compiler" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler">
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel.51455808" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel.value.g0" valueType="enumerated"/>
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel.51455808" name="Debug level" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel.value.g0" valueType="enumerated"/>
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level.132579829" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level.value.os" valueType="enumerated"/>
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level.132579829" name="Optimization level" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level.value.os" valueType="enumerated"/>
-								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.definedsymbols.767346044" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.definedsymbols" useByScannerDiscovery="false" valueType="definedSymbols">
+								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.definedsymbols.767346044" name="Define symbols (-D)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.definedsymbols" useByScannerDiscovery="false" valueType="definedSymbols">
 									<listOptionValue builtIn="false" value="USE_HAL_DRIVER"/>
 									<listOptionValue builtIn="false" value="STM32F746xx"/>
 								</option>
-								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.includepaths.1698764284" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.includepaths" useByScannerDiscovery="false" valueType="includePath">
+								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.includepaths.1698764284" name="Include paths (-I)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.includepaths" useByScannerDiscovery="false" valueType="includePath">
 									<listOptionValue builtIn="false" value="../LWIP/App"/>
 									<listOptionValue builtIn="false" value="../LWIP/Target"/>
 									<listOptionValue builtIn="false" value="../Core/Inc"/>
@@ -166,11 +167,11 @@
 								<inputType id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.input.c.2006257133" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.input.c"/>
 							</tool>
 							<tool id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.71666735" name="MCU G++ Compiler" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler">
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.debuglevel.1614690145" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.debuglevel" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.debuglevel.value.g0" valueType="enumerated"/>
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.debuglevel.1614690145" name="Debug level" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.debuglevel" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.debuglevel.value.g0" valueType="enumerated"/>
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.optimization.level.732337455" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.optimization.level" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.optimization.level.value.os" valueType="enumerated"/>
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.optimization.level.732337455" name="Optimization level" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.optimization.level" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.cpp.compiler.option.optimization.level.value.os" valueType="enumerated"/>
 							</tool>
 							<tool id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.611884646" name="MCU GCC Linker" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker">
-								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.option.script.233275983" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.option.script" value="${workspace_loc:/${ProjName}/STM32F746NGHX_FLASH.ld}" valueType="string"/>
+								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.option.script.233275983" name="Linker Script (-T)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.option.script" value="${workspace_loc:/${ProjName}/STM32F746NGHX_FLASH.ld}" valueType="string"/>
 								<inputType id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.input.2143593204" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.linker.input">
 									<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
 									<additionalInput kind="additionalinput" paths="$(LIBS)"/>

project/.settings/language.settings.xml

@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<project>
-	<configuration id="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.debug.1923792012" name="Debug">
-		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
-			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
-			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
-			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" console="false" env-hash="1598175355152594562" id="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" keep-relative-paths="false" name="MCU ARM GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
-				<language-scope id="org.eclipse.cdt.core.gcc"/>
-				<language-scope id="org.eclipse.cdt.core.g++"/>
-			</provider>
-		</extension>
-	</configuration>
-	<configuration id="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.release.2077354707" name="Release">
-		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
-			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
-			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
-			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" console="false" env-hash="1598175355152594562" id="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" keep-relative-paths="false" name="MCU ARM GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
-				<language-scope id="org.eclipse.cdt.core.gcc"/>
-				<language-scope id="org.eclipse.cdt.core.g++"/>
-			</provider>
-		</extension>
-	</configuration>
-</project>

project/.settings/stm32cubeide.project.prefs

@@ -1,4 +0,0 @@
-635E684B79701B039C64EA45C3F84D30=80FB35DB9B6CC80F943DFC38749575DE
-66BE74F758C12D739921AEA421D593D3=0
-DC22A860405A8BF2F2C095E5B6529F12=61120D4BCEA54A37FDB6D8A0FEEC8DD5
-eclipse.preferences.version=1

project/Core/Inc/lcd_api.h

@@ -0,0 +1,98 @@
+/**
+ * @file lcd_api.h
+ * @brief API for LCD functionality
+ * @author Tim S.
+ */
+
+#ifndef INC_LCD_API_H_
+#define INC_LCD_API_H_
+#include <stdbool.h>
+#include <string.h>
+#include <ctype.h>
+
+#define LOGGER_LEVEL_ALL
+#include "log.h"
+#include "../../Drivers/BSP/STM32746G-Discovery/stm32746g_discovery_lcd.h"
+
+#define LCD_BLUE          LCD_COLOR_BLUE
+#define LCD_GREEN         LCD_COLOR_GREEN
+#define LCD_RED           LCD_COLOR_RED
+#define LCD_CYAN          LCD_COLOR_CYAN
+#define LCD_MAGENTA       LCD_COLOR_MAGENTA
+#define LCD_YELLOW        LCD_COLOR_YELLOW
+#define LCD_LIGHTBLUE     LCD_COLOR_LIGHTBLUE
+#define LCD_LIGHTGREEN    LCD_COLOR_LIGHTGREEN
+#define LCD_LIGHTRED      LCD_COLOR_LIGHTRED
+#define LCD_LIGHTCYAN     LCD_COLOR_LIGHTCYAN
+#define LCD_LIGHTMAGENTA  LCD_COLOR_LIGHTMAGENTA
+#define LCD_LIGHTYELLOW   LCD_COLOR_LIGHTYELLOW
+#define LCD_DARKBLUE      LCD_COLOR_DARKBLUE
+#define LCD_DARKGREEN     LCD_COLOR_DARKGREEN
+#define LCD_DARKRED       LCD_COLOR_DARKRED
+#define LCD_DARKCYAN      LCD_COLOR_DARKCYAN
+#define LCD_DARKMAGENTA   LCD_COLOR_DARKMAGENTA
+#define LCD_DARKYELLOW    LCD_COLOR_DARKYELLOW
+#define LCD_WHITE         LCD_COLOR_WHITE
+#define LCD_LIGHTGRAY     LCD_COLOR_LIGHTGRAY
+#define LCD_GRAY          LCD_COLOR_GRAY
+#define LCD_DARKGRAY      LCD_COLOR_DARKGRAY
+#define LCD_BLACK         LCD_COLOR_BLACK
+#define LCD_BROWN         LCD_COLOR_BROWN
+#define LCD_ORANGE        LCD_COLOR_ORANGE
+#define LCD_TRANSPARENT   LCD_COLOR_TRANSPARENT
+
+#define LCD_ARGB8888  0x00000000U
+#define LCD_RGB888    0x00000001U
+#define LCD_RGB565    0x00000002U
+#define LCD_ARGB1555  0x00000003U
+
+#define LCD_FONT8     &Font8
+#define LCD_FONT12    &Font12
+#define LCD_FONT16    &Font16
+#define LCD_FONT20    &Font20
+#define LCD_FONT24    &Font24
+
+
+extern LTDC_HandleTypeDef  hLtdcHandler;
+
+/**
+ * @brief Initialise LCD
+ * Initialise the LCD screen with BackLight on or not
+ *
+ * @param[in] bl_on Bool to enable or disable the LCD backlight
+ *
+ */
+void lcd_init(bool bl_on);
+
+/**
+ * @brief Display text
+ * Display text on the LCD screen in a certain color. When text width exceeds BSP_LCD_GetXSize(),
+ * a text wrap will be performed. If the text wrap is between two letters in a word, the '-' character
+ * will be injected.
+ *
+ * @param[in] text     C-style text string to display on the LCD screen
+ * @param[in] x_pos    X-position
+ * @param[in] y_pos    Y-position
+ * @param[in] color    Color in which the text will be displayed, see preset colors in defines above
+ * @param[in] bg_color Background color for the text
+ * @param[in] font     Font size, see defines above in file
+ */
+void lcd_display_text(uint8_t* text, uint16_t x_pos, uint16_t y_pos, uint32_t color, uint32_t bg_color, sFONT *font);
+
+/**
+ * @brief Draw BMP image on screen
+ * Draw BMP image from C array to the LCD screen at position X, Y. In color mode ARGB8888, RGB888, RGB565 or ARGB1555
+ * Supports ARGB8888, RGB565, RGB888
+ *
+ * @author Wim Dams
+ *
+ * @param[in] p_src      C array containing the image data
+ * @param[in] x_pos      X-position
+ * @param[in] y_pos      Y-position
+ * @param[in] x_size     Width of image
+ * @param[in] y_size     Height of image
+ * @param[in] color_mode Color mode (see defined color modes above in file)
+ */
+void lcd_draw_bmp(const void* p_src, uint32_t x_pos, uint32_t y_pos, uint32_t x_size, uint32_t y_size, uint32_t color_mode);
+
+#endif /* INC_LCD_API_H_ */

project/Core/Inc/llfs.h

@@ -0,0 +1,86 @@
+/**
+ * @file llfs.h
+ * @brief Linked List Filesystem header (llfs)
+ * @author Lorenz C.
+ * @version 0.1.1
+ */
+
+#ifndef LLFS_H
+#define LLFS_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+/**
+ * @brief Representation of a file in the llfs filesystem
+ */
+typedef struct llfs_file {
+    const uint8_t* data; // Pointer to the file data (len bytes)
+    const char* name;    // Null-terminated string with the filename
+    size_t len;          // Length of the file data
+} llfs_file_t;
+
+/**
+ * @brief Internal representation of a file in the filesystem
+ * @warning This struct should only be used in the llfs_data.c file.
+ */
+struct llfs_data_file {
+    const uint8_t* data;
+    const char* name;
+    const size_t len;
+    const struct llfs_data_file* next;
+};
+
+/**
+ * @brief Initialize the llfs filesystem
+ * @note This function should be called before any other llfs function or POSIX file operation (e.g. fopen, fread, ...)
+ * @return 0 on success
+ */
+int8_t llfs_init(void);
+
+/**
+ * @brief Get a list of files in the filesystem
+ * Get a list of all the files in the filesystem.
+ *
+ * Use the filter to filter out files with a filename that do not match the file extension filter.
+ *
+ * The following members of the llfs_file_t struct are set: name, len and data. @ref llfs_file_t
+ *
+ *
+ * @param[out] file_list A pointer to an array of llfs_file_t to store the files in @ref llfs_file_t
+ * @param[in] max_files The maximum number of files to return (size of file_list)
+ * @param[in] filter A string with the file extensions to filter out. (e.g. "*.txt" or "*.png")
+ * @return The number of files returned
+ */
+size_t llfs_file_list(llfs_file_t* file_list, size_t max_files, char* filter);
+
+/**
+ * @brief Open a file
+ * Get a file from the filesystem by name.
+ *
+ * @param[in] name The name of the file to open
+ * @return A pointer to a llfs_file_t with the file data @ref llfs_file_t
+ *         NULL if the file does not exist
+ */
+llfs_file_t* llfs_file_open(const char* name);
+
+/**
+ * @brief Iterate over all files in the filesystem
+ * For each call (with the same mem pointer) the next file in the filesystem is returned.
+ * The first call should be with mem = NULL.
+ * If a filter is specified, only files with a filename that matches the filter are returned.
+ *
+ * @param[in, out] mem A pointer to a void* that is used internally to keep track of the current file
+ * @param[in] filter  A string with file extension to filter out. (e.g. "*.txt" or "*.png")
+ * @return The next file in the filesystem or NULL if there are no more files @ref llfs_file_t
+ */
+llfs_file_t* llfs_next_file(void** mem, char* filter);
+
+/**
+ * @brief Get the number of files in the filesystem
+ *
+ * @return The number of files in the filesystem
+ */
+size_t llfs_file_count(void);
+
+#endif // LLFS_H

project/Core/Inc/log.h

@@ -88,17 +88,17 @@
 #endif
 
 #if LOGGER_LEVEL <= 1
-#define LOG_DEBUG(tag, fmt, ...) printf(LOG_COLOR_D"[Debug]     (%lu) [%s]: " fmt LOG_RESET_COLOR "\r\n", logger_get_timestamp(), tag, ##__VA_ARGS__)
+#define LOG_DEBUG(tag, fmt, ...) printf(LOG_COLOR_D"[Debug]    (%lu) [%s]: " fmt LOG_RESET_COLOR "\r\n", logger_get_timestamp(), tag, ##__VA_ARGS__)
 #else
 #define LOG_DEBUG(tag, fmt, ...)
 #endif
 #if LOGGER_LEVEL <= 2
-#define LOG_INFO(tag, fmt, ...)  printf(LOG_COLOR_I"[Info]      (%lu) [%s]: " fmt LOG_RESET_COLOR "\r\n", logger_get_timestamp(), tag, ##__VA_ARGS__)
+#define LOG_INFO(tag, fmt, ...)  printf(LOG_COLOR_I"[Info]     (%lu) [%s]: " fmt LOG_RESET_COLOR "\r\n", logger_get_timestamp(), tag, ##__VA_ARGS__)
 #else
 #define LOG_INFO(tag, fmt, ...)
 #endif
 #if LOGGER_LEVEL <= 3
-#define LOG_WARN(tag, fmt, ...)  printf(LOG_COLOR_W"[Warning]   (%lu) [%s]: " fmt LOG_RESET_COLOR "\r\n", logger_get_timestamp(), tag, ##__VA_ARGS__)
+#define LOG_WARN(tag, fmt, ...)  printf(LOG_COLOR_W"[Warning]  (%lu) [%s]: " fmt LOG_RESET_COLOR "\r\n", logger_get_timestamp(), tag, ##__VA_ARGS__)
 #else
 #define LOG_WARN(tag, fmt, ...)
 #endif
@@ -108,7 +108,7 @@
 #define LOG_CRIT(tag, fmt, ...)
 #endif
 #if LOGGER_LEVEL <= 4
-#define LOG_FATAL(tag, fmt, ...)   printf(LOG_COLOR_F"[Fatal]   (%lu) [%s]: " fmt LOG_RESET_COLOR "\r\n", logger_get_timestamp(), tag, ##__VA_ARGS__)
+#define LOG_FATAL(tag, fmt, ...)   printf(LOG_COLOR_F"[Fatal]    (%lu) [%s]: " fmt LOG_RESET_COLOR "\r\n", logger_get_timestamp(), tag, ##__VA_ARGS__)
 #else
 #define LOG_FATAL(tag, fmt, ...)
 #endif

project/Core/Inc/main.h

@@ -31,6 +31,7 @@ extern "C" {
 
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
+#include "../../Drivers/BSP/STM32746G-Discovery/stm32746g_discovery_lcd.h"
 
 /* USER CODE END Includes */
 

project/Core/Src/lcd_api.c

@@ -0,0 +1,97 @@
+/**
+ * @file lcd_api.c
+ * @brief LCD API implementation
+ * @author Tim S.
+ * @todo Implement function to read images from fs
+ */
+#include "lcd_api.h"
+
+static const char* TAG = "lcd_api";
+
+static DMA2D_HandleTypeDef hDma2dHandler2;
+
+void lcd_init(bool bl_on) {
+    LOG_INFO(TAG, "Init LCD");
+
+    BSP_LCD_Init();
+    BSP_LCD_LayerDefaultInit(1, LCD_FB_START_ADDRESS);
+    BSP_LCD_LayerDefaultInit(0, LCD_FB_START_ADDRESS + (BSP_LCD_GetXSize()*BSP_LCD_GetYSize()*4));
+    BSP_LCD_SelectLayer(0);
+    BSP_LCD_Clear(LCD_COLOR_BLACK);
+    BSP_LCD_SelectLayer(1);
+    BSP_LCD_Clear(LCD_COLOR_BLACK);
+    if (bl_on) {
+        HAL_GPIO_WritePin(GPIOK, GPIO_PIN_3, GPIO_PIN_SET);
+        HAL_GPIO_WritePin(GPIOI, GPIO_PIN_12, GPIO_PIN_SET);
+    } else {
+    	HAL_GPIO_WritePin(GPIOK, GPIO_PIN_3, GPIO_PIN_RESET);
+    	HAL_GPIO_WritePin(GPIOI, GPIO_PIN_12, GPIO_PIN_RESET);
+    }
+}
+
+void lcd_display_text(uint8_t* text, uint16_t x_pos, uint16_t y_pos, uint32_t color, uint32_t bg_color, sFONT *font) {
+    LOG_INFO(TAG, "Display text: %s @x=%d,y=%d", text, x_pos, y_pos);
+
+    uint16_t tot_length = x_pos + (strlen(text) * font->Width);
+    if ((x_pos % font->Width) != 0) {
+        x_pos -= (x_pos % font->Width);
+    }
+
+    BSP_LCD_SetTextColor(color);
+    BSP_LCD_SetBackColor(bg_color);
+    BSP_LCD_SetFont(font);
+
+    if (tot_length > BSP_LCD_GetXSize()) {
+        for (int i = 0; i < strlen(text); i++) {
+            if ((x_pos) > BSP_LCD_GetXSize() - (font->Width)*2) {
+                if (isalpha(text[i-1]) && isalpha(text[i])) {
+                    BSP_LCD_DisplayChar(x_pos, y_pos, '-');
+                    i -= 1;
+                }
+                x_pos = 0;
+                y_pos += font->Height;
+            } else {
+                BSP_LCD_DisplayChar(x_pos, y_pos, text[i]);
+                x_pos += font->Width;
+            }
+        }
+    } else {
+        BSP_LCD_DisplayStringAt(x_pos, y_pos, text, LEFT_MODE);
+    }
+
+}
+
+void lcd_draw_bmp(const void* p_src, uint32_t x_pos, uint32_t y_pos, uint32_t x_size, uint32_t y_size, uint32_t color_mode) {
+
+    uint32_t address = hLtdcHandler.LayerCfg[1].FBStartAdress + (((BSP_LCD_GetXSize()*y_pos) + x_pos)*(4));
+    void *p_dst = (void *)address;
+
+
+    hDma2dHandler2.Init.Mode         = DMA2D_M2M_PFC;
+    hDma2dHandler2.Init.ColorMode    = DMA2D_ARGB8888;
+    hDma2dHandler2.Init.OutputOffset = BSP_LCD_GetXSize()-x_size;
+
+    hDma2dHandler2.LayerCfg[1].AlphaMode = DMA2D_NO_MODIF_ALPHA;
+    hDma2dHandler2.LayerCfg[1].InputAlpha = 0xFF;
+    hDma2dHandler2.LayerCfg[1].InputColorMode = color_mode;
+    hDma2dHandler2.LayerCfg[1].InputOffset = 0;
+
+    LOG_INFO(TAG, "DMA2D init");
+    hDma2dHandler2.Instance = DMA2D;
+    if (HAL_DMA2D_Init(&hDma2dHandler2) != HAL_OK) {
+        LOG_CRIT(TAG, "HAL_DMA2D_Init error");
+        return;
+    }
+    LOG_INFO(TAG, "DMA2D config layer");
+    if (HAL_DMA2D_ConfigLayer(&hDma2dHandler2, 1) != HAL_OK) {
+    	LOG_CRIT(TAG, "HAL_DMA2D_ConfigLayer error");
+        return;
+    }
+    LOG_INFO(TAG, "DMA2D start");
+    if (HAL_DMA2D_Start(&hDma2dHandler2, (uint32_t)p_src, (uint32_t)p_dst, x_size, y_size) != HAL_OK) {
+        LOG_CRIT(TAG, "HAL_DMA2D_Start error");
+        return;
+    }
+    LOG_INFO(TAG, "DMA2D poll");
+    HAL_DMA2D_PollForTransfer(&hDma2dHandler2, 10);
+}

project/Core/Src/llfs.c

@@ -0,0 +1,436 @@
+/**
+ * @file llfs.c
+ * @brief Linked List Filesystem implementation (llfs)
+ * @author Lorenz C.
+ * @version 0.1.1
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#define LOGGER_LEVEL_WARN
+#include "llfs.h"
+#include "log.h"
+
+/**
+ * @brief The maximum number of files that can be opened concurrently using the POSIX API
+ */
+#define POSIX_MAX_FILES 10
+
+extern struct llfs_data_file* llfs_root;
+const char* TAG = "llfs";
+size_t file_count = 0;
+FILE* file_table[POSIX_MAX_FILES];
+
+static int new_file_table_entry(void);
+static int free_file_table_entry(int file_id);
+static FILE* file_id_to_stream(int file_id);
+static uint8_t file_ext_cmp(const char* filename, const char* ext);
+
+int8_t llfs_init(void) {
+    LOG_DEBUG(TAG, "Initializing llfs");
+
+    // Initialize the file table
+    for (int i = 0; i < POSIX_MAX_FILES; i++) {
+        file_table[i] = NULL;
+    }
+
+    // Add stdin, stdout and stderr to the file table
+    file_table[STDIN_FILENO] = stdin;
+    file_table[STDOUT_FILENO] = stdout;
+    file_table[STDERR_FILENO] = stderr;
+
+    return 0;
+}
+
+size_t llfs_file_list(llfs_file_t* file_list, size_t max_files, char* filter) {
+    size_t count = 0;                              // Number of files found
+    const struct llfs_data_file* file = llfs_root; // Pointer to the current file
+
+    if (filter != NULL) {
+        LOG_DEBUG(TAG, "Filtering files with filter: %s", filter);
+
+        if (filter[0] == '*') {
+            filter++;
+        }
+    }
+
+    // Iterate over all files in the filesystem
+    while (file != NULL && file_count < max_files) {
+        // Filter out files with a filename that does not match the filter
+        if (filter != NULL) {
+            if (!file_ext_cmp(file->name, filter)) {
+                file = file->next;
+                continue;
+            }
+        }
+
+        // Add the file to the file list
+        file_list[count].data = file->data;
+        file_list[count].name = file->name;
+        file_list[count].len = file->len;
+
+        // Move to the next file
+        count++;
+        file = file->next;
+    }
+
+    LOG_DEBUG(TAG, "Files found: %d", count);
+    return count;
+}
+
+llfs_file_t* llfs_file_open(const char* name) {
+    const struct llfs_data_file* file = llfs_root;
+
+    LOG_DEBUG(TAG, "Opening file: %s", name);
+
+    while (file != NULL) {
+        if (strcmp(file->name, name) == 0) {
+            LOG_DEBUG(TAG, "File found: %s, size: %d", file->name, file->len);
+            return (llfs_file_t*)file;
+        }
+        file = file->next;
+    }
+
+    LOG_DEBUG(TAG, "File not found: %s", name);
+    return NULL;
+}
+
+llfs_file_t* llfs_next_file(void** mem, char* filter) {
+    struct llfs_data_file* prev_file = (struct llfs_data_file*)*mem;
+    uint8_t filter_ok = 0;
+
+    if (prev_file == NULL) {
+        prev_file = llfs_root;
+    } else {
+        prev_file = (struct llfs_data_file*)prev_file->next;
+    }
+
+    // If a filter is specified, only return files that match the filter
+    if (filter != NULL) {
+        LOG_DEBUG(TAG, "Filtering files with filter: %s", filter);
+
+        // Remove the '*' from the filter
+        if (filter[0] == '*') {
+            filter++;
+        }
+
+        while (prev_file != NULL) {
+            if (file_ext_cmp(prev_file->name, filter)) {
+                filter_ok = 1;
+                break;
+            }
+            prev_file = (struct llfs_data_file*)prev_file->next;
+        }
+    }
+
+    *mem = (void*)prev_file;
+    return (llfs_file_t*)prev_file;
+}
+
+size_t llfs_file_count(void) {
+    if (file_count == 0) {
+        const struct llfs_data_file* file = llfs_root;
+        while (file != NULL) {
+            file_count++;
+            file = file->next;
+        }
+    }
+    return file_count;
+}
+
+/**
+ * @brief Newlib open implementation
+ *
+ * @param path
+ * @param flags
+ * @param mode
+ * @return
+ */
+int _open(char* path, int flags, int mode) {
+    int file_id;
+    FILE* stream;
+    errno = 0;
+    llfs_file_t* llfs_file;
+
+    // Add a new entry to the file table
+    file_id = new_file_table_entry();
+    if (file_id < 0) {
+        LOG_WARN(TAG, "Failed to add new file table entry. %s", strerror(errno));
+        return -1;
+    }
+
+    // Get the stream associated with the file id
+    stream = file_id_to_stream(file_id);
+    if (stream == NULL) {
+        LOG_WARN(TAG, "Failed to get file table entry. %s", strerror(errno));
+        free_file_table_entry(file_id);
+        return -1;
+    }
+
+    // Get the file from the llfs filesystem
+    llfs_file = llfs_file_open(path);
+    if (llfs_file == NULL) {
+        LOG_DEBUG(TAG, "Failed to open file: %s", path);
+        free_file_table_entry(file_id);
+        return -1;
+    }
+
+    // Initialize the stream
+    stream->_cookie = (void*)llfs_file;
+    stream->_offset = 0;
+    stream->_flags = __SRD;
+
+    return file_id;
+}
+
+/**
+ * @brief Newlib close implementation
+ *
+ * @param file_id
+ * @return
+ */
+int _close(int file_id) {
+    FILE* stream;
+
+    // Get the stream associated with the file id
+    stream = file_id_to_stream(file_id);
+    if (stream == NULL) {
+        LOG_WARN(TAG, "Failed to get file table entry. %s", strerror(errno));
+        return -1;
+    }
+
+    // Remove the entry from the file table
+    if (free_file_table_entry(file_id) < 0) {
+        LOG_WARN(TAG, "Failed to remove file table entry. %s", strerror(errno));
+        return -1;
+    }
+
+    return 0;
+}
+
+/**
+ * @brief Newlib read implementation
+ *
+ * @param file_id
+ * @param ptr
+ * @param len
+ * @return
+ */
+int _read(int file_id, char* ptr, int len) {
+    FILE* stream;
+    llfs_file_t* llfs_file;
+    size_t bytes_read;
+
+    // Read from stdin, stdout and stderr is not supported
+    if (file_id == STDIN_FILENO || file_id == STDOUT_FILENO || file_id == STDERR_FILENO) {
+        LOG_DEBUG(TAG, "Trying to read from stdin, stdout or stderr: %d", file_id);
+        return -1;
+    }
+
+    // Get the stream associated with the file id
+    stream = file_id_to_stream(file_id);
+    if (stream == NULL) {
+        LOG_WARN(TAG, "Failed to get file table entry. %s", strerror(errno));
+        return -1;
+    }
+
+    // Get the file from the llfs filesystem associated with the stream
+    llfs_file = (llfs_file_t*)stream->_cookie;
+    if (llfs_file == NULL) {
+        LOG_WARN(TAG, "Failed to get llfs file associated with stream: %d", file_id);
+        return -1;
+    }
+
+    // Calculate the number of bytes to read (limited by the file size)
+    bytes_read = llfs_file->len - stream->_offset;
+    if (bytes_read > len) {
+        bytes_read = len;
+    } else if (bytes_read == 0) { // End of file
+        stream->_flags |= __SEOF;
+        return 0;
+    }
+
+    // Copy the data over to the dst buffer
+    memcpy(ptr, llfs_file->data + stream->_offset, bytes_read);
+
+    stream->_offset += (off_t)bytes_read;
+    return (int)bytes_read;
+}
+
+/**
+ * @brief Newlib isatty implementation
+ *
+ * @param file
+ * @return 1 if the file is stdin, stdout or stderr, 0 otherwise
+ */
+int isatty(int file) {
+    if (file == STDIN_FILENO || file == STDOUT_FILENO || file == STDERR_FILENO) {
+        return 1;
+    }
+
+    return 0;
+}
+
+/**
+ * @brief Newlib lseek implementation
+ *
+ * @param file
+ * @param ptr
+ * @param dir
+ * @return
+ */
+int _lseek(int file, int ptr, int dir) {
+    FILE* stream;
+
+    if (file == STDIN_FILENO || file == STDOUT_FILENO || file == STDERR_FILENO) {
+        LOG_DEBUG(TAG, "Trying to seek stdin, stdout or stderr: %d", file);
+        return -1;
+    }
+
+    stream = file_id_to_stream(file);
+    if (stream == NULL) {
+        LOG_WARN(TAG, "Failed to get file table entry. %s", strerror(errno));
+        return -1;
+    }
+
+    switch (dir) {
+        case SEEK_SET:
+            stream->_offset = ptr;
+            break;
+        case SEEK_CUR:
+            stream->_offset += ptr;
+            break;
+        case SEEK_END:
+            stream->_offset = (off_t)((llfs_file_t*)stream->_cookie)->len + ptr;
+            break;
+        default:
+            LOG_WARN(TAG, "Invalid seek direction: %d", dir);
+            return -1;
+    }
+
+    return 0;
+}
+
+/**
+ * @brief Newlib fstat implementation
+ *
+ * @param[in] file
+ * @param[out] st
+ * @return
+ */
+int _fstat(int file, struct stat* st) {
+    FILE* stream;
+    llfs_file_t *llfs_file;
+
+    // Check if the file is stdin, stdout or stderr
+    if (file == STDIN_FILENO || file == STDOUT_FILENO || file == STDERR_FILENO) {
+        st->st_mode = S_IFCHR; // Character special file
+        return 0;
+    }
+
+    // Get the stream associated with the file id
+    stream = file_id_to_stream(file);
+    if (stream == NULL) {
+        LOG_WARN(TAG, "Failed to get file table entry. %s", strerror(errno));
+        return -1;
+    }
+
+    // Get the file from the llfs filesystem associated with the stream
+    llfs_file = (llfs_file_t*)stream->_cookie;
+    if (llfs_file == NULL) {
+        LOG_WARN(TAG, "Failed to get llfs file associated with stream: %d", file);
+        return -1;
+    }
+
+    st->st_mode = S_IFREG;  // Regular file
+    st->st_size = (off_t)llfs_file->len;
+    return 0;
+}
+
+/**
+ * @brief Create a new entry in the file table
+ *
+ * @return The file id or -1 if an error occurred. See errno for more information.
+ */
+static int new_file_table_entry(void) {
+    FILE* stream;
+
+    // Try to find an empty entry in the file table
+    for (int i = 0; i < POSIX_MAX_FILES; i++) {
+        if (file_table[i] == NULL) {
+            stream = (FILE*)malloc(sizeof(FILE));
+            if (stream == NULL) {
+                errno = ENOMEM; // Out of memory
+                return -1;
+            }
+            file_table[i] = stream;
+            return i;
+        }
+    }
+
+    // No empty entry found
+    errno = ENFILE; // Too many open files
+    return -1;
+}
+
+/**
+ * @brief Remove an entry from the file table
+ *
+ * @param[in] file_id The file id to remove
+ * @return 0 if successful, -1 if an error occurred. See errno for more information.
+ */
+static int free_file_table_entry(int file_id) {
+    // Check if the file id is valid
+    if (file_id < 0 || file_id >= POSIX_MAX_FILES) {
+        errno = EBADF; // Bad file number
+        return -1;
+    }
+
+    // Remove the entry from the file table
+    free(file_table[file_id]);
+    file_table[file_id] = NULL;
+
+    return 0;
+}
+
+/**
+ * @brief Get the stream associated with a file id
+ *
+ * @param[in] file_id The file id to get the stream for
+ * @return The stream or NULL if an error occurred. See errno for more information.
+ */
+static FILE* file_id_to_stream(int file_id) {
+    if (file_id < 0 || file_id >= POSIX_MAX_FILES) {
+        errno = EBADF; // Bad file number
+        return NULL;
+    }
+    return file_table[file_id];
+}
+
+
+
+/**
+ * @brief Check if a filename ends with a given extension
+ *
+ * @param[in] filename The filename to check
+ * @param[in] ext The extension to check for
+ * @return 1 if the filename ends with the extension, 0 otherwise
+ */
+static uint8_t file_ext_cmp(const char* const filename, const char* const ext) {
+    uint8_t ext_len = strlen(ext);
+    uint8_t filename_len = strlen(filename);
+
+    if (filename_len < ext_len) {
+        return 0;
+    }
+
+    // Compare backwards
+    for (uint8_t i = 0; i < ext_len; i++) {
+        if (filename[filename_len - i] != ext[ext_len - i]) {
+            return 0;
+        }
+    }
+    return 1;
+}

project/Core/Src/log.c

@@ -1,7 +1,7 @@
 /**
  * @file log.c
  * @brief Logger implementation
- * @authors Lorenz C. && Speetjens S.
+ * @authors Lorenz C. && Sander S.
  */
 
 #include <stdarg.h>

project/Core/Src/syscalls.c

@@ -89,14 +89,14 @@ __attribute__((weak)) int _write(int file, char *ptr, int len)
   return len;
 }
 
-int _close(int file)
+__attribute__((weak)) int _close(int file)
 {
   (void)file;
   return -1;
 }
 
 
-int _fstat(int file, struct stat *st)
+__attribute__((weak)) int _fstat(int file, struct stat *st)
 {
   (void)file;
   st->st_mode = S_IFCHR;
@@ -109,7 +109,7 @@ int _isatty(int file)
   return 1;
 }
 
-int _lseek(int file, int ptr, int dir)
+__attribute__((weak)) int _lseek(int file, int ptr, int dir)
 {
   (void)file;
   (void)ptr;
@@ -117,7 +117,7 @@ int _lseek(int file, int ptr, int dir)
   return 0;
 }
 
-int _open(char *path, int flags, ...)
+__attribute__((weak)) int _open(char *path, int flags, ...)
 {
   (void)path;
   (void)flags;
@@ -145,7 +145,7 @@ int _times(struct tms *buf)
   return -1;
 }
 
-int _stat(char *file, struct stat *st)
+__attribute__((weak)) int _stat(char *file, struct stat *st)
 {
   (void)file;
   st->st_mode = S_IFCHR;

project/Drivers/BSP/STM32746G-Discovery/stm32746g_discovery_lcd.c

@@ -116,7 +116,7 @@ EndDependencies */
     
 /** @defgroup STM32746G_DISCOVERY_LCD_Private_Variables STM32746G_DISCOVERY_LCD Private Variables
   * @{
-  */ 
+  */
 LTDC_HandleTypeDef  hLtdcHandler;
 static DMA2D_HandleTypeDef hDma2dHandler;
 
@@ -1021,7 +1021,7 @@ void BSP_LCD_DrawPixel(uint16_t Xpos, uint16_t Ypos, uint32_t RGB_Code)
   */
 void BSP_LCD_DrawBitmap(uint32_t Xpos, uint32_t Ypos, uint8_t *pbmp)
 {
-  uint32_t index = 0, width = 0, height = 0, bit_pixel = 0;
+  uint32_t index = 0, width = 0, height = 0, bit_pixel = 0, row_size = 0;
   uint32_t address;
   uint32_t input_color_mode = 0;
   
@@ -1039,6 +1039,9 @@ void BSP_LCD_DrawBitmap(uint32_t Xpos, uint32_t Ypos, uint8_t *pbmp)
   
   /* Set the address */
   address = hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (((BSP_LCD_GetXSize()*Ypos) + Xpos)*(4));
+
+  /* Calculate the row size in byte */
+  row_size = ((bit_pixel*width + 31)/32) * 4;
   
   /* Get the layer pixel format */    
   if ((bit_pixel/8) == 4)
@@ -1053,20 +1056,20 @@ void BSP_LCD_DrawBitmap(uint32_t Xpos, uint32_t Ypos, uint8_t *pbmp)
   {
     input_color_mode = CM_RGB888;
   }
-  
+
   /* Bypass the bitmap header */
-  pbmp += (index + (width * (height - 1) * (bit_pixel/8)));  
+  pbmp += (index + (row_size * (height - 1)));
-  
+
   /* Convert picture to ARGB8888 pixel format */
   for(index=0; index < height; index++)
   {
     /* Pixel format conversion */
     LL_ConvertLineToARGB8888((uint32_t *)pbmp, (uint32_t *)address, width, input_color_mode);
-    
+
     /* Increment the source and destination buffers */
-    address+=  (BSP_LCD_GetXSize()*4);
+    address += (BSP_LCD_GetXSize()*4);
-    pbmp -= width*(bit_pixel/8);
+    pbmp -= row_size;
-  } 
+  }
 }
 
 /**

project/Drivers/BSP/STM32746G-Discovery/stm32746g_discovery_lcd.h

@@ -43,7 +43,7 @@
 /** @addtogroup STM32746G_DISCOVERY
   * @{
   */
-    
+
 /** @addtogroup STM32746G_DISCOVERY_LCD
   * @{
   */ 

project/LWIP/Target/lwipopts.h

@@ -99,6 +99,8 @@
 #define LWIP_HTTPD_CUSTOM_FILES 1
 /*----- Value in opt.h for HTTPD_USE_CUSTOM_FSDATA: 0 -----*/
 #define HTTPD_USE_CUSTOM_FSDATA 1
+/*----- Default Value for LWIP_TFTP: 0 ---*/
+#define LWIP_TFTP 1
 /*----- Value in opt.h for LWIP_STATS: 1 -----*/
 #define LWIP_STATS 0
 /*----- Value in opt.h for CHECKSUM_GEN_IP: 1 -----*/

project/Middlewares/Third_Party/LwIP/src/apps/tftp/tftp_server.c

@@ -0,0 +1,435 @@
+/**
+ *
+ * @file tftp_server.c
+ *
+ * @author   Logan Gunthorpe <logang@deltatee.com>
+ *           Dirk Ziegelmeier <dziegel@gmx.de>
+ *
+ * @brief    Trivial File Transfer Protocol (RFC 1350)
+ *
+ * Copyright (c) Deltatee Enterprises Ltd. 2013
+ * All rights reserved.
+ *
+ */
+
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification,are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Author: Logan Gunthorpe <logang@deltatee.com>
+ *         Dirk Ziegelmeier <dziegel@gmx.de>
+ *
+ */
+
+/**
+ * @defgroup tftp TFTP server
+ * @ingroup apps
+ *
+ * This is simple TFTP server for the lwIP raw API.
+ */
+
+#include "lwip/apps/tftp_server.h"
+
+#if LWIP_UDP
+
+#include "lwip/udp.h"
+#include "lwip/timeouts.h"
+#include "lwip/debug.h"
+
+#define TFTP_MAX_PAYLOAD_SIZE 512
+#define TFTP_HEADER_LENGTH    4
+
+#define TFTP_RRQ   1
+#define TFTP_WRQ   2
+#define TFTP_DATA  3
+#define TFTP_ACK   4
+#define TFTP_ERROR 5
+
+enum tftp_error {
+  TFTP_ERROR_FILE_NOT_FOUND    = 1,
+  TFTP_ERROR_ACCESS_VIOLATION  = 2,
+  TFTP_ERROR_DISK_FULL         = 3,
+  TFTP_ERROR_ILLEGAL_OPERATION = 4,
+  TFTP_ERROR_UNKNOWN_TRFR_ID   = 5,
+  TFTP_ERROR_FILE_EXISTS       = 6,
+  TFTP_ERROR_NO_SUCH_USER      = 7
+};
+
+#include <string.h>
+
+struct tftp_state {
+  const struct tftp_context *ctx;
+  void *handle;
+  struct pbuf *last_data;
+  struct udp_pcb *upcb;
+  ip_addr_t addr;
+  u16_t port;
+  int timer;
+  int last_pkt;
+  u16_t blknum;
+  u8_t retries;
+  u8_t mode_write;
+};
+
+static struct tftp_state tftp_state;
+
+static void tftp_tmr(void *arg);
+
+static void
+close_handle(void)
+{
+  tftp_state.port = 0;
+  ip_addr_set_any(0, &tftp_state.addr);
+
+  if (tftp_state.last_data != NULL) {
+    pbuf_free(tftp_state.last_data);
+    tftp_state.last_data = NULL;
+  }
+
+  sys_untimeout(tftp_tmr, NULL);
+
+  if (tftp_state.handle) {
+    tftp_state.ctx->close(tftp_state.handle);
+    tftp_state.handle = NULL;
+    LWIP_DEBUGF(TFTP_DEBUG | LWIP_DBG_STATE, ("tftp: closing\n"));
+  }
+}
+
+static void
+send_error(const ip_addr_t *addr, u16_t port, enum tftp_error code, const char *str)
+{
+  int str_length = strlen(str);
+  struct pbuf *p;
+  u16_t *payload;
+
+  p = pbuf_alloc(PBUF_TRANSPORT, (u16_t)(TFTP_HEADER_LENGTH + str_length + 1), PBUF_RAM);
+  if (p == NULL) {
+    return;
+  }
+
+  payload = (u16_t *) p->payload;
+  payload[0] = PP_HTONS(TFTP_ERROR);
+  payload[1] = lwip_htons(code);
+  MEMCPY(&payload[2], str, str_length + 1);
+
+  udp_sendto(tftp_state.upcb, p, addr, port);
+  pbuf_free(p);
+}
+
+static void
+send_ack(u16_t blknum)
+{
+  struct pbuf *p;
+  u16_t *payload;
+
+  p = pbuf_alloc(PBUF_TRANSPORT, TFTP_HEADER_LENGTH, PBUF_RAM);
+  if (p == NULL) {
+    return;
+  }
+  payload = (u16_t *) p->payload;
+
+  payload[0] = PP_HTONS(TFTP_ACK);
+  payload[1] = lwip_htons(blknum);
+  udp_sendto(tftp_state.upcb, p, &tftp_state.addr, tftp_state.port);
+  pbuf_free(p);
+}
+
+static void
+resend_data(void)
+{
+  struct pbuf *p = pbuf_alloc(PBUF_TRANSPORT, tftp_state.last_data->len, PBUF_RAM);
+  if (p == NULL) {
+    return;
+  }
+
+  if (pbuf_copy(p, tftp_state.last_data) != ERR_OK) {
+    pbuf_free(p);
+    return;
+  }
+
+  udp_sendto(tftp_state.upcb, p, &tftp_state.addr, tftp_state.port);
+  pbuf_free(p);
+}
+
+static void
+send_data(void)
+{
+  u16_t *payload;
+  int ret;
+
+  if (tftp_state.last_data != NULL) {
+    pbuf_free(tftp_state.last_data);
+  }
+
+  tftp_state.last_data = pbuf_alloc(PBUF_TRANSPORT, TFTP_HEADER_LENGTH + TFTP_MAX_PAYLOAD_SIZE, PBUF_RAM);
+  if (tftp_state.last_data == NULL) {
+    return;
+  }
+
+  payload = (u16_t *) tftp_state.last_data->payload;
+  payload[0] = PP_HTONS(TFTP_DATA);
+  payload[1] = lwip_htons(tftp_state.blknum);
+
+  ret = tftp_state.ctx->read(tftp_state.handle, &payload[2], TFTP_MAX_PAYLOAD_SIZE);
+  if (ret < 0) {
+    send_error(&tftp_state.addr, tftp_state.port, TFTP_ERROR_ACCESS_VIOLATION, "Error occured while reading the file.");
+    close_handle();
+    return;
+  }
+
+  pbuf_realloc(tftp_state.last_data, (u16_t)(TFTP_HEADER_LENGTH + ret));
+  resend_data();
+}
+
+static void
+recv(void *arg, struct udp_pcb *upcb, struct pbuf *p, const ip_addr_t *addr, u16_t port)
+{
+  u16_t *sbuf = (u16_t *) p->payload;
+  int opcode;
+
+  LWIP_UNUSED_ARG(arg);
+  LWIP_UNUSED_ARG(upcb);
+
+  if (((tftp_state.port != 0) && (port != tftp_state.port)) ||
+      (!ip_addr_isany_val(tftp_state.addr) && !ip_addr_cmp(&tftp_state.addr, addr))) {
+    send_error(addr, port, TFTP_ERROR_ACCESS_VIOLATION, "Only one connection at a time is supported");
+    pbuf_free(p);
+    return;
+  }
+
+  opcode = sbuf[0];
+
+  tftp_state.last_pkt = tftp_state.timer;
+  tftp_state.retries = 0;
+
+  switch (opcode) {
+    case PP_HTONS(TFTP_RRQ): /* fall through */
+    case PP_HTONS(TFTP_WRQ): {
+      const char tftp_null = 0;
+      char filename[TFTP_MAX_FILENAME_LEN + 1];
+      char mode[TFTP_MAX_MODE_LEN + 1];
+      u16_t filename_end_offset;
+      u16_t mode_end_offset;
+
+      if (tftp_state.handle != NULL) {
+        send_error(addr, port, TFTP_ERROR_ACCESS_VIOLATION, "Only one connection at a time is supported");
+        break;
+      }
+
+      sys_timeout(TFTP_TIMER_MSECS, tftp_tmr, NULL);
+
+      /* find \0 in pbuf -> end of filename string */
+      filename_end_offset = pbuf_memfind(p, &tftp_null, sizeof(tftp_null), 2);
+      if ((u16_t)(filename_end_offset - 1) > sizeof(filename)) {
+        send_error(addr, port, TFTP_ERROR_ACCESS_VIOLATION, "Filename too long/not NULL terminated");
+        break;
+      }
+      pbuf_copy_partial(p, filename, filename_end_offset - 1, 2);
+
+      /* find \0 in pbuf -> end of mode string */
+      mode_end_offset = pbuf_memfind(p, &tftp_null, sizeof(tftp_null), filename_end_offset + 1);
+      if ((u16_t)(mode_end_offset - filename_end_offset) > sizeof(mode)) {
+        send_error(addr, port, TFTP_ERROR_ACCESS_VIOLATION, "Mode too long/not NULL terminated");
+        break;
+      }
+      pbuf_copy_partial(p, mode, mode_end_offset - filename_end_offset, filename_end_offset + 1);
+
+      tftp_state.handle = tftp_state.ctx->open(filename, mode, opcode == PP_HTONS(TFTP_WRQ));
+      tftp_state.blknum = 1;
+
+      if (!tftp_state.handle) {
+        send_error(addr, port, TFTP_ERROR_FILE_NOT_FOUND, "Unable to open requested file.");
+        break;
+      }
+
+      LWIP_DEBUGF(TFTP_DEBUG | LWIP_DBG_STATE, ("tftp: %s request from ", (opcode == PP_HTONS(TFTP_WRQ)) ? "write" : "read"));
+      ip_addr_debug_print(TFTP_DEBUG | LWIP_DBG_STATE, addr);
+      LWIP_DEBUGF(TFTP_DEBUG | LWIP_DBG_STATE, (" for '%s' mode '%s'\n", filename, mode));
+
+      ip_addr_copy(tftp_state.addr, *addr);
+      tftp_state.port = port;
+
+      if (opcode == PP_HTONS(TFTP_WRQ)) {
+        tftp_state.mode_write = 1;
+        send_ack(0);
+      } else {
+        tftp_state.mode_write = 0;
+        send_data();
+      }
+
+      break;
+    }
+
+    case PP_HTONS(TFTP_DATA): {
+      int ret;
+      u16_t blknum;
+
+      if (tftp_state.handle == NULL) {
+        send_error(addr, port, TFTP_ERROR_ACCESS_VIOLATION, "No connection");
+        break;
+      }
+
+      if (tftp_state.mode_write != 1) {
+        send_error(addr, port, TFTP_ERROR_ACCESS_VIOLATION, "Not a write connection");
+        break;
+      }
+
+      blknum = lwip_ntohs(sbuf[1]);
+      if (blknum == tftp_state.blknum) {
+        pbuf_remove_header(p, TFTP_HEADER_LENGTH);
+
+        ret = tftp_state.ctx->write(tftp_state.handle, p);
+        if (ret < 0) {
+          send_error(addr, port, TFTP_ERROR_ACCESS_VIOLATION, "error writing file");
+          close_handle();
+        } else {
+          send_ack(blknum);
+        }
+
+        if (p->tot_len < TFTP_MAX_PAYLOAD_SIZE) {
+          close_handle();
+        } else {
+          tftp_state.blknum++;
+        }
+      } else if ((u16_t)(blknum + 1) == tftp_state.blknum) {
+        /* retransmit of previous block, ack again (casting to u16_t to care for overflow) */
+        send_ack(blknum);
+      } else {
+        send_error(addr, port, TFTP_ERROR_UNKNOWN_TRFR_ID, "Wrong block number");
+      }
+      break;
+    }
+
+    case PP_HTONS(TFTP_ACK): {
+      u16_t blknum;
+      int lastpkt;
+
+      if (tftp_state.handle == NULL) {
+        send_error(addr, port, TFTP_ERROR_ACCESS_VIOLATION, "No connection");
+        break;
+      }
+
+      if (tftp_state.mode_write != 0) {
+        send_error(addr, port, TFTP_ERROR_ACCESS_VIOLATION, "Not a read connection");
+        break;
+      }
+
+      blknum = lwip_ntohs(sbuf[1]);
+      if (blknum != tftp_state.blknum) {
+        send_error(addr, port, TFTP_ERROR_UNKNOWN_TRFR_ID, "Wrong block number");
+        break;
+      }
+
+      lastpkt = 0;
+
+      if (tftp_state.last_data != NULL) {
+        lastpkt = tftp_state.last_data->tot_len != (TFTP_MAX_PAYLOAD_SIZE + TFTP_HEADER_LENGTH);
+      }
+
+      if (!lastpkt) {
+        tftp_state.blknum++;
+        send_data();
+      } else {
+        close_handle();
+      }
+
+      break;
+    }
+
+    default:
+      send_error(addr, port, TFTP_ERROR_ILLEGAL_OPERATION, "Unknown operation");
+      break;
+  }
+
+  pbuf_free(p);
+}
+
+static void
+tftp_tmr(void *arg)
+{
+  LWIP_UNUSED_ARG(arg);
+
+  tftp_state.timer++;
+
+  if (tftp_state.handle == NULL) {
+    return;
+  }
+
+  sys_timeout(TFTP_TIMER_MSECS, tftp_tmr, NULL);
+
+  if ((tftp_state.timer - tftp_state.last_pkt) > (TFTP_TIMEOUT_MSECS / TFTP_TIMER_MSECS)) {
+    if ((tftp_state.last_data != NULL) && (tftp_state.retries < TFTP_MAX_RETRIES)) {
+      LWIP_DEBUGF(TFTP_DEBUG | LWIP_DBG_STATE, ("tftp: timeout, retrying\n"));
+      resend_data();
+      tftp_state.retries++;
+    } else {
+      LWIP_DEBUGF(TFTP_DEBUG | LWIP_DBG_STATE, ("tftp: timeout\n"));
+      close_handle();
+    }
+  }
+}
+
+/** @ingroup tftp
+ * Initialize TFTP server.
+ * @param ctx TFTP callback struct
+ */
+err_t
+tftp_init(const struct tftp_context *ctx)
+{
+  err_t ret;
+
+  /* LWIP_ASSERT_CORE_LOCKED(); is checked by udp_new() */
+  struct udp_pcb *pcb = udp_new_ip_type(IPADDR_TYPE_ANY);
+  if (pcb == NULL) {
+    return ERR_MEM;
+  }
+
+  ret = udp_bind(pcb, IP_ANY_TYPE, TFTP_PORT);
+  if (ret != ERR_OK) {
+    udp_remove(pcb);
+    return ret;
+  }
+
+  tftp_state.handle    = NULL;
+  tftp_state.port      = 0;
+  tftp_state.ctx       = ctx;
+  tftp_state.timer     = 0;
+  tftp_state.last_data = NULL;
+  tftp_state.upcb      = pcb;
+
+  udp_recv(pcb, recv, NULL);
+
+  return ERR_OK;
+}
+
+/** @ingroup tftp
+ * Deinitialize ("turn off") TFTP server.
+ */
+void tftp_cleanup(void)
+{
+  LWIP_ASSERT("Cleanup called on non-initialized TFTP", tftp_state.upcb != NULL);
+  udp_remove(tftp_state.upcb);
+  close_handle();
+  memset(&tftp_state, 0, sizeof(tftp_state));
+}
+
+#endif /* LWIP_UDP */

project/project.ioc

@@ -33,7 +33,7 @@ LTDC.WindowX1_L1=480
 LTDC.WindowY1_L0=272
 LTDC.WindowY1_L1=272
 LWIP.BSP.number=1
-LWIP.IPParameters=LWIP_DHCP,IP_ADDRESS,NETMASK_ADDRESS,LWIP_HTTPD,LWIP_HTTPD_CUSTOM_FILES,LWIP_HTTPD_CGI_SSI,LWIP_HTTPD_SSI,LWIP_HTTPD_SSI_RAW,LWIP_DNS,MEMP_MEM_MALLOC,LWIP_IGMP,LWIP_HTTPD_CGI,LWIP_HTTPD_SUPPORT_POST,MEM_LIBC_MALLOC
+LWIP.IPParameters=LWIP_DHCP,IP_ADDRESS,NETMASK_ADDRESS,LWIP_HTTPD,LWIP_HTTPD_CUSTOM_FILES,LWIP_HTTPD_CGI_SSI,LWIP_HTTPD_SSI,LWIP_HTTPD_SSI_RAW,LWIP_DNS,MEMP_MEM_MALLOC,LWIP_IGMP,LWIP_HTTPD_CGI,LWIP_HTTPD_SUPPORT_POST,MEM_LIBC_MALLOC,LWIP_TFTP
 LWIP.IP_ADDRESS=192.168.069.010
 LWIP.LWIP_DHCP=0
 LWIP.LWIP_DNS=1
@@ -45,6 +45,7 @@ LWIP.LWIP_HTTPD_SSI=1
 LWIP.LWIP_HTTPD_SSI_RAW=1
 LWIP.LWIP_HTTPD_SUPPORT_POST=1
 LWIP.LWIP_IGMP=1
+LWIP.LWIP_TFTP=1
 LWIP.MEMP_MEM_MALLOC=1
 LWIP.MEM_LIBC_MALLOC=1
 LWIP.NETMASK_ADDRESS=255.255.255.000