diff --git a/CMakeLists.txt b/CMakeLists.txt
index 568a4d2..8a0b85c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,6 +19,7 @@ else()
     # Add key include paths
     target_include_directories(${PROJECT_NAME} PUBLIC
         ${CMAKE_CURRENT_LIST_DIR}/dev
+        ${CMAKE_CURRENT_LIST_DIR}/examples
     )
 
     # Compilation definition information
diff --git a/dev/lwbtn_opts.h b/dev/lwbtn_opts.h
index 4234c14..a3d8792 100644
--- a/dev/lwbtn_opts.h
+++ b/dev/lwbtn_opts.h
@@ -41,10 +41,4 @@
  * copy & replace here settings you want to change values
  */
 
-/* Press config */
-#define LWBTN_CFG_TIME_DEBOUNCE_PRESS   20 /* No debounce for press event */
-
-/* Release config */
-#define LWBTN_CFG_TIME_DEBOUNCE_RELEASE 20 /* No debounce for release event */
-
 #endif /* LWBTN_HDR_OPTS_H */
diff --git a/examples/LwBTN-NUCLEO-L011K4/.vscode/settings.json b/examples/LwBTN-NUCLEO-L011K4/.vscode/settings.json
index 8bf0ebf..462a80f 100644
--- a/examples/LwBTN-NUCLEO-L011K4/.vscode/settings.json
+++ b/examples/LwBTN-NUCLEO-L011K4/.vscode/settings.json
@@ -2,6 +2,8 @@
     "files.associations": {
         "lwbtn.h": "c",
         "lwbtn_opt.h": "c",
-        "lwbtn_opts.h": "c"
+        "lwbtn_opts.h": "c",
+        "main.h": "c",
+        "stm32l0xx_hal.h": "c"
     }
 }
\ No newline at end of file
diff --git a/examples/LwBTN-NUCLEO-L011K4/CMakeLists.txt b/examples/LwBTN-NUCLEO-L011K4/CMakeLists.txt
index 8b23b14..c9185b0 100644
--- a/examples/LwBTN-NUCLEO-L011K4/CMakeLists.txt
+++ b/examples/LwBTN-NUCLEO-L011K4/CMakeLists.txt
@@ -28,7 +28,10 @@ set(cpu_PARAMS
 )
 
 # Sources
-set(sources_SRCS)
+set(sources_SRCS
+    # Add test file
+    ${CMAKE_CURRENT_SOURCE_DIR}/../test.c
+)
 
 # Include directories for each compiler
 set(include_c_DIRS)
@@ -36,7 +39,10 @@ set(include_cxx_DIRS)
 set(include_asm_DIRS)
 
 # Symbols definition for each compiler
-set(symbols_c_SYMB)
+set(symbols_c_SYMB
+    "STM32" # Used for test macros
+    "RUN_TEST"# Defined to run the test
+)
 set(symbols_cxx_SYMB)
 set(symbols_asm_SYMB)
 
@@ -90,8 +96,8 @@ target_compile_definitions(${CMAKE_PROJECT_NAME} PRIVATE
 target_link_libraries(${CMAKE_PROJECT_NAME} ${link_LIBS})
 
 # Add LwBTN library itself
-#add_subdirectory("../../lwbtn" lwbtn)
-#target_link_libraries(${CMAKE_PROJECT_NAME} lwbtn)
+add_subdirectory("../../lwbtn" lwbtn)
+target_link_libraries(${CMAKE_PROJECT_NAME} lwbtn)
 
 # Compiler options
 target_compile_options(${CMAKE_PROJECT_NAME} PRIVATE
diff --git a/examples/LwBTN-NUCLEO-L011K4/Core/Inc/lwbtn_opts.h b/examples/LwBTN-NUCLEO-L011K4/Core/Inc/lwbtn_opts.h
index 98dc778..a3d8792 100644
--- a/examples/LwBTN-NUCLEO-L011K4/Core/Inc/lwbtn_opts.h
+++ b/examples/LwBTN-NUCLEO-L011K4/Core/Inc/lwbtn_opts.h
@@ -41,10 +41,4 @@
  * copy & replace here settings you want to change values
  */
 
-/* Press config */
-#define LWBTN_CFG_TIME_DEBOUNCE_PRESS   20 /* Debounce in ms for press */
-
-/* Release config */
-#define LWBTN_CFG_TIME_DEBOUNCE_RELEASE 0 /* Debounce in ms for release */
-
 #endif /* LWBTN_HDR_OPTS_H */
diff --git a/examples/LwBTN-NUCLEO-L011K4/Core/Inc/main.h b/examples/LwBTN-NUCLEO-L011K4/Core/Inc/main.h
index 5f040dc..6030939 100644
--- a/examples/LwBTN-NUCLEO-L011K4/Core/Inc/main.h
+++ b/examples/LwBTN-NUCLEO-L011K4/Core/Inc/main.h
@@ -57,10 +57,12 @@ void Error_Handler(void);
 /* USER CODE END EFP */
 
 /* Private defines -----------------------------------------------------------*/
-#define BTN_Pin       GPIO_PIN_12
-#define BTN_GPIO_Port GPIOA
-#define OUT_Pin       GPIO_PIN_3
-#define OUT_GPIO_Port GPIOB
+#define BTN_Pin             GPIO_PIN_12
+#define BTN_GPIO_Port       GPIOA
+#define OUT_Pin             GPIO_PIN_3
+#define OUT_GPIO_Port       GPIOB
+#define OUT_CLICK_Pin       GPIO_PIN_4
+#define OUT_CLICK_GPIO_Port GPIOB
 
 /* USER CODE BEGIN Private defines */
 
diff --git a/examples/LwBTN-NUCLEO-L011K4/Core/Src/main.c b/examples/LwBTN-NUCLEO-L011K4/Core/Src/main.c
index b8277b8..8de6d78 100644
--- a/examples/LwBTN-NUCLEO-L011K4/Core/Src/main.c
+++ b/examples/LwBTN-NUCLEO-L011K4/Core/Src/main.c
@@ -18,41 +18,14 @@
 /* USER CODE END Header */
 /* Includes ------------------------------------------------------------------*/
 #include "main.h"
-#define LWBTN_RUN 0
-#if LWBTN_RUN
 #include "lwbtn/lwbtn.h"
-#endif /* LWBTN_RUN */
 
 /* Private function prototypes -----------------------------------------------*/
 void SystemClock_Config(void);
 static void MX_GPIO_Init(void);
 
-#if LWBTN_RUN
-static lwbtn_btn_t btns[1]; /* Just one button */
-
-/* Get state function */
-static uint8_t
-prv_get_state(struct lwbtn* lwobj, struct lwbtn_btn* btn) {
-    /* It is just one button, so we can ignore btn check...
-       Button is "pressed" when low */
-    return HAL_GPIO_ReadPin(BTN_GPIO_Port, BTN_Pin) == GPIO_PIN_RESET;
-}
-
-/* Button event function */
-static void
-prv_evt_fn(struct lwbtn* lwobj, struct lwbtn_btn* btn, lwbtn_evt_t evt) {
-    /* It is just one button, so we can ignore btn check... */
-    switch (evt) {
-        case LWBTN_EVT_ONPRESS:
-        case LWBTN_EVT_ONRELEASE: {
-            HAL_GPIO_WritePin(OUT_GPIO_Port, OUT_Pin, evt == LWBTN_EVT_ONPRESS ? GPIO_PIN_SET : GPIO_PIN_RESET);
-            break;
-        }
-        default:
-            break;
-    }
-}
-#endif /* LWBTN_RUN */
+/* External test function */
+extern void test_stm32(void);
 
 /**
   * @brief  The application entry point.
@@ -69,18 +42,10 @@ main(void) {
     /* Initialize all configured peripherals */
     MX_GPIO_Init();
 
-    /* Initialize LwBTN library */
-#if LWBTN_RUN
-    lwbtn_init(btns, sizeof(btns) / sizeof(btns[0]), prv_get_state, prv_evt_fn);
-#endif /* LWBTN_RUN */
+    /* Run test program */
+    test_stm32();
 
-    /* Infinite loop */
-    while (1) {
-#if LWBTN_RUN
-        lwbtn_process(HAL_GetTick());
-#endif /* LWBTN_RUN */
-    }
-    /* USER CODE END 3 */
+    while (1) {}
 }
 
 /**
@@ -92,13 +57,13 @@ SystemClock_Config(void) {
     RCC_OscInitTypeDef RCC_OscInitStruct = {0};
     RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
 
-    /** Configure the main internal regulator output voltage
-  */
+    /* Configure the main internal regulator output voltage */
     __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
 
-    /** Initializes the RCC Oscillators according to the specified parameters
-  * in the RCC_OscInitTypeDef structure.
-  */
+    /* 
+     * Initializes the RCC Oscillators according to the specified parameters
+     * in the RCC_OscInitTypeDef structure.
+     */
     RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
     RCC_OscInitStruct.HSIState = RCC_HSI_ON;
     RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
@@ -106,21 +71,16 @@ SystemClock_Config(void) {
     RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
     RCC_OscInitStruct.PLL.PLLMUL = RCC_PLLMUL_4;
     RCC_OscInitStruct.PLL.PLLDIV = RCC_PLLDIV_2;
-    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
-        Error_Handler();
-    }
+    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {}
 
-    /** Initializes the CPU, AHB and APB buses clocks
-  */
+    /* Initializes the CPU, AHB and APB buses clocks */
     RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
     RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
     RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
     RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
     RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
 
-    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) {
-        Error_Handler();
-    }
+    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) {}
 }
 
 /**
@@ -140,11 +100,14 @@ MX_GPIO_Init(void) {
 
     /*Configure GPIO pin Output Level */
     HAL_GPIO_WritePin(OUT_GPIO_Port, OUT_Pin, GPIO_PIN_RESET);
+    HAL_GPIO_WritePin(OUT_CLICK_GPIO_Port, OUT_CLICK_Pin, GPIO_PIN_RESET);
+    HAL_GPIO_WritePin(BTN_GPIO_Port, BTN_Pin, GPIO_PIN_RESET);
 
-    /*Configure GPIO pin : BTN_Pin */
+    /* Configure GPIO pin : BTN_Pin */
     GPIO_InitStruct.Pin = BTN_Pin;
-    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
-    GPIO_InitStruct.Pull = GPIO_PULLUP;
+    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
     HAL_GPIO_Init(BTN_GPIO_Port, &GPIO_InitStruct);
 
     /*Configure GPIO pin : OUT_Pin */
@@ -154,40 +117,13 @@ MX_GPIO_Init(void) {
     GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
     HAL_GPIO_Init(OUT_GPIO_Port, &GPIO_InitStruct);
 
+    /*Configure GPIO pin : OUT_CLICK_Pin */
+    GPIO_InitStruct.Pin = OUT_CLICK_Pin;
+    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    HAL_GPIO_Init(OUT_CLICK_GPIO_Port, &GPIO_InitStruct);
+
     /* USER CODE BEGIN MX_GPIO_Init_2 */
     /* USER CODE END MX_GPIO_Init_2 */
 }
-
-/* USER CODE BEGIN 4 */
-
-/* USER CODE END 4 */
-
-/**
-  * @brief  This function is executed in case of error occurrence.
-  * @retval None
-  */
-void
-Error_Handler(void) {
-    /* USER CODE BEGIN Error_Handler_Debug */
-    /* User can add his own implementation to report the HAL error return state */
-    __disable_irq();
-    while (1) {}
-    /* USER CODE END Error_Handler_Debug */
-}
-
-#ifdef USE_FULL_ASSERT
-/**
-  * @brief  Reports the name of the source file and the source line number
-  *         where the assert_param error has occurred.
-  * @param  file: pointer to the source file name
-  * @param  line: assert_param error line source number
-  * @retval None
-  */
-void
-assert_failed(uint8_t* file, uint32_t line) {
-    /* USER CODE BEGIN 6 */
-    /* User can add his own implementation to report the file name and line number,
-     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
-    /* USER CODE END 6 */
-}
-#endif /* USE_FULL_ASSERT */
diff --git a/examples/test.c b/examples/test.c
index dce14bb..56b0738 100644
--- a/examples/test.c
+++ b/examples/test.c
@@ -1,7 +1,13 @@
-#include "lwbtn/lwbtn.h"
-#include "windows.h"
 #include <stdio.h>
 #include <stdlib.h>
+#include "test.h"
+#if defined(WIN32)
+#include "windows.h"
+#endif /* defined(WIN32) */
+#if defined(STM32)
+#include "stm32l0xx_hal.h"
+#include "main.h"
+#endif /* defined(STM32) */
 
 /**
  * \brief           Input state information
@@ -24,10 +30,10 @@ typedef struct {
 #define MAX_TIME_MS 5000
 
 /* Tests to run */
-#define TEST1       1
-#define TEST2       1
-#define TEST3       1
-#define TEST4       1
+#define TEST1       0
+#define TEST2       0
+#define TEST3       0
+#define TEST4       0
 #define TEST5       1
 
 /* List of used buttons -> test case */
@@ -219,30 +225,39 @@ prv_get_state_for_time(uint32_t time) {
 /* Get button state */
 static uint8_t
 prv_btn_get_state(struct lwbtn* lw, struct lwbtn_btn* btn) {
+    uint8_t state = prv_get_state_for_time(time_current);
+
+#if defined(STM32)
+    HAL_GPIO_WritePin(BTN_GPIO_Port, BTN_Pin, state ? GPIO_PIN_SET : GPIO_PIN_RESET);
+#endif /* defined(STM32) */
+
     (void)btn;
     (void)lw;
-    return prv_get_state_for_time(time_current);
+    return state;
 }
 
 /* Process button event */
 static void
 prv_btn_event(struct lwbtn* lw, struct lwbtn_btn* btn, lwbtn_evt_t evt) {
+#if defined(WIN32)
     const char* s;
     uint32_t color, keepalive_cnt = 0, diff_time;
-    HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
     static uint32_t time_prev;
     static uint32_t array_index = 0;
-    const btn_test_evt_t* test_evt_data;
+    const btn_test_evt_t* test_evt_data = NULL;
+    HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
 
     /* Test errors variable */
     uint32_t test_errors = 0;
     if (array_index >= sizeof(test_events) / sizeof(test_events[0])) {
+#if defined(WIN32)
         SetConsoleTextAttribute(hConsole, FOREGROUND_RED);
         printf("[%7u] ERROR! Array index is out of bounds!\r\n", (unsigned)time_current);
         SetConsoleTextAttribute(hConsole, FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
-        return;
+#endif /* defined(WIN32) */
+    } else {
+        test_evt_data = &test_events[array_index];
     }
-    test_evt_data = &test_events[array_index];
 
     /* Handle timing */
     diff_time = time_current - time_prev;
@@ -252,7 +267,7 @@ prv_btn_event(struct lwbtn* lw, struct lwbtn_btn* btn, lwbtn_evt_t evt) {
 #endif
 
     /* Event type must match */
-    test_errors += test_evt_data->evt != evt;
+    test_errors += test_evt_data == NULL || test_evt_data->evt != evt;
 
     /* Get event string */
     if (0) {
@@ -261,7 +276,7 @@ prv_btn_event(struct lwbtn* lw, struct lwbtn_btn* btn, lwbtn_evt_t evt) {
         s = "KEEPALIVE";
         color = FOREGROUND_RED;
 
-        test_errors += test_evt_data->keepalive_cnt != keepalive_cnt;
+        test_errors += test_evt_data == NULL || test_evt_data->keepalive_cnt != keepalive_cnt;
 #endif /* LWBTN_CFG_USE_KEEPALIVE */
     } else if (evt == LWBTN_EVT_ONPRESS) {
         s = "  ONPRESS";
@@ -273,12 +288,14 @@ prv_btn_event(struct lwbtn* lw, struct lwbtn_btn* btn, lwbtn_evt_t evt) {
     } else if (evt == LWBTN_EVT_ONCLICK) {
         s = "  ONCLICK";
         color = FOREGROUND_RED | FOREGROUND_GREEN;
+        is_click = 1;
 
-        test_errors += test_evt_data->conseq_clicks != btn->click.cnt;
+        test_errors += test_evt_data == NULL || test_evt_data->conseq_clicks != btn->click.cnt;
     } else {
         s = "  UNKNOWN";
         color = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
     }
+
     SetConsoleTextAttribute(hConsole, color);
     printf("[%7u][%6u] evt: %s, keep-alive cnt: %3u, click cnt: %3u\r\n", (unsigned)time_current, (unsigned)diff_time,
            s, (unsigned)keepalive_cnt, (unsigned)btn->click.cnt);
@@ -286,11 +303,22 @@ prv_btn_event(struct lwbtn* lw, struct lwbtn_btn* btn, lwbtn_evt_t evt) {
         printf("TEST FAILED...\r\n");
     }
     SetConsoleTextAttribute(hConsole, FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
-    (void)lw;
-
     ++array_index; /* Go to next step in next event */
+#else
+    /* Control GPIO pin in STM32 */
+    if (evt == LWBTN_EVT_ONPRESS) {
+        HAL_GPIO_WritePin(OUT_GPIO_Port, OUT_Pin, GPIO_PIN_SET);
+    } else if (evt == LWBTN_EVT_ONRELEASE) {
+        HAL_GPIO_WritePin(OUT_GPIO_Port, OUT_Pin, GPIO_PIN_RESET);
+    } else if (evt == LWBTN_EVT_ONCLICK) {
+        is_click = 1;
+        HAL_GPIO_WritePin(OUT_CLICK_GPIO_Port, OUT_CLICK_Pin, GPIO_PIN_SET);
+    }
+#endif /* defined(WIN32) */
+    (void)lw;
 }
 
+#if defined(WIN32)
 /**
  * \brief           Test function
  */
@@ -308,3 +336,35 @@ test_win32(void) {
     }
     return 0;
 }
+#endif /* defined(WIN32) */
+
+#if defined(STM32)
+
+int
+test_stm32(void) {
+    uint32_t tick, tick_old = 0;
+
+    /* Define buttons */
+    lwbtn_init_ex(NULL, btns, sizeof(btns) / sizeof(btns[0]), prv_btn_get_state, prv_btn_event);
+
+    /* Counter simulates ms tick */
+    tick_old = 0;
+    for (size_t i = 0; i < MAX_TIME_MS; ++i) {
+        /* Wait for a tick to have real time data */
+        while ((tick = HAL_GetTick()) == tick_old) {}
+        tick_old = tick;
+
+        /* Reset from previous click event */
+        if (is_click) {
+            HAL_GPIO_WritePin(OUT_CLICK_GPIO_Port, OUT_CLICK_Pin, GPIO_PIN_RESET);
+            is_click = 0;
+        }
+
+        /* Set current tick time in ms */
+        time_current = i; /* Set current time used in callback */
+        lwbtn_process(i); /* Now run processing */
+    }
+    return 0;
+}
+
+#endif /* defined(STM32) */
diff --git a/examples/test.h b/examples/test.h
new file mode 100644
index 0000000..769a612
--- /dev/null
+++ b/examples/test.h
@@ -0,0 +1,6 @@
+#ifndef TEST_HDR_H
+#define TEST_HDR_H
+
+#include "lwbtn/lwbtn.h"
+
+#endif /* TEST_HDR_H */