diff --git a/.github/workflows/run_lcd_hd44780_test .yml b/.github/workflows/run_lcd_hd44780_test .yml
index 66ec955..d6bd2de 100644
--- a/.github/workflows/run_lcd_hd44780_test .yml	
+++ b/.github/workflows/run_lcd_hd44780_test .yml	
@@ -7,7 +7,7 @@ on:
   pull_request:
     branches: [main, develop]
 jobs:
-  template_test_running:
+  LCD_HD44780_test_running_win:
     name: LCD HD44780 Test RUN
     runs-on: windows-latest 
     # strategy:
@@ -29,14 +29,71 @@ jobs:
         cmake -Bout -GNinja
         cmake --build out
 
-    - name: List files
-      working-directory: test/lcd_hd44780/out
-      run: dir
+    # - name: List files
+    #   working-directory: test/lcd_hd44780/out
+    #   run: dir
 
     - name: Run LCD HD44780 tests
       working-directory: test/lcd_hd44780/out
       run: ./lcd_hd44780_test.exe -v
 
+  LCD_HD44780_AVR_test_running_win:
+    name: LCD HD44780 AVR Test RUN
+    runs-on: windows-latest 
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4.0.0
+      with:
+        submodules: recursive
+        
+    - name: Install Ninja
+      uses: seanmiddleditch/gha-setup-ninja@v3
+        
+    - name: Build binary
+      working-directory: test/lcd_hd44780
+      run: |
+        mkdir out_avr
+        cmake -S ./avr_code_test -B out_avr -GNinja
+        cmake --build out_avr
+
+    # - name: List files
+    #   working-directory: test/lcd_hd44780/out
+    #   run: dir
+
+    - name: Run LCD HD44780 tests
+      working-directory: test/lcd_hd44780/out_avr
+      run: ./lcd_hd44780_test.exe -v
+
+  LCD_HD44780_test_running_ubuntu:
+    name: LCD HD44780 Test RUN Ubuntu
+    runs-on: ubuntu-latest 
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4.0.0
+      with:
+        submodules: recursive
+        
+    - name: Install Ninja
+      uses: seanmiddleditch/gha-setup-ninja@v3
+        
+    - name: Build binary
+      working-directory: test/lcd_hd44780
+      run: |
+        mkdir out
+        cmake -Bout -GNinja
+        cmake --build out
+
+    # - name: List files
+    #   working-directory: test/lcd_hd44780/out
+    #   run: dir
+
+    - name: Run LCD HD44780 tests
+      working-directory: test/lcd_hd44780/out
+      run: ./lcd_hd44780_test -v      
+
+
+
+
   # template_2_test_running:
   #   name: template_2 Test RUN
   #   runs-on: windows-latest 
diff --git a/.gitignore b/.gitignore
index e49b04c..a81b62c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 out/
+out_avr/
 Release/
 Debug/
 Build/
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
index 859fa32..e876618 100644
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@@ -92,9 +92,10 @@
                 "--force" ,
                 "--inline-suppr",
                 // "--output-file=reports/cppcheck.out",  // this will print out report instead of printing problems in terminal
-                // "--platform=win64",
+                "--platform=win64",
                 "--suppress=missingInclude",
-                //"--suppress=unusedFunction",
+                "--suppress=missingIncludeSystem",
+                "--suppress=unusedFunction",
             ],
             "options": {
                 "cwd": "${workspaceFolder}"
diff --git a/src/lcd_hd44780.c b/src/lcd_hd44780.c
index 7df291f..f14b883 100644
--- a/src/lcd_hd44780.c
+++ b/src/lcd_hd44780.c
@@ -99,16 +99,7 @@ static void lcd_hex_AVR(int val, uint8_t width, enum alignment alignment);
 static void lcd_bin_AVR(int val, uint8_t width);
 #else
 static void fill_bin_value_buffer(int val, char *bin_val_buffer);
-static void fill_zeros_buffer(char *buffer, uint8_t width, char *zeros_buf);
-#endif
-#ifdef AVR
-static void lcd_put_spaces(uint8_t empty_spaces);
-static void lcd_int_AVR(int val, uint8_t width, enum alignment alignment);
-static void lcd_hex_AVR(int val, uint8_t width, enum alignment alignment);
-static void lcd_bin_AVR(int val, uint8_t width);
-#else
-static void fill_bin_value_buffer(int val, char *bin_val_buffer);
-static void fill_zeros_buffer(char *buffer, uint8_t width, char *zeros_buf);
+static void fill_zeros_buffer(const char *buffer, uint8_t width, char *zeros_buf);
 #endif
 
 static void register_LCD_IO_driver(void)
@@ -116,8 +107,7 @@ static void register_LCD_IO_driver(void)
     LCD = LCD_IO_driver_interface_get();
 }
 
-static void lcd_set_all_SIG(void)
-{
+static void lcd_set_all_SIG(void){
     LCD->set_SIG(LCD_E);
     LCD->set_SIG(LCD_RS);
 #if USE_RW_PIN == ON
@@ -304,7 +294,7 @@ static void fill_bin_value_buffer(int val, char *bin_val_buffer)
         bit_mask = bit_mask >> 1;
     }
 }
-static void fill_zeros_buffer(char *buffer, uint8_t width, char *zeros_buf)
+static void fill_zeros_buffer(const char *buffer, uint8_t width, char *zeros_buf)
 {
     if (strlen(buffer) < (width + VAL_PREFIX_LENGHT))
     {
diff --git a/test/lcd_hd44780/avr_code_test/CMakeLists.txt b/test/lcd_hd44780/avr_code_test/CMakeLists.txt
new file mode 100644
index 0000000..983f1fa
--- /dev/null
+++ b/test/lcd_hd44780/avr_code_test/CMakeLists.txt
@@ -0,0 +1,43 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(lcd_hd44780_test C)
+
+add_subdirectory(../../unity unity)
+
+set(CMAKE_C_FLAGS  "${CMAKE_CXX_FLAGS} -Wall -Wextra")
+
+set(INCLUDE_DIRS
+	../../../src
+)
+
+set(TEST_INCLUDE_DIRS
+	../..
+	../.
+)
+
+set(SRCS
+	../../../src/lcd_hd44780.c
+)
+
+set(TEST_SRCS
+	../lcd_hd44780_test_main.c
+	../lcd_hd44780_test_runner.c
+	../lcd_hd44780_test_init.c
+	../mock_LCD_IO_driver.c
+	../lcd_hd44780_test_basic_func.c
+	../lcd_hd44780_test_common.c
+	#mock_module.c
+)
+
+set(GLOBAL_DEFINES
+	-DAVR
+)
+
+include_directories(${INCLUDE_DIRS} ${TEST_INCLUDE_DIRS})
+add_definitions(${GLOBAL_DEFINES})
+
+link_libraries(unity)
+add_executable(${PROJECT_NAME} ${SRCS} ${TEST_SRCS})
+
+target_compile_options(${PROJECT_NAME} PRIVATE -fprofile-arcs -ftest-coverage)
+target_link_options(${PROJECT_NAME} PRIVATE -fprofile-arcs)
\ No newline at end of file