diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..2e7f699
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,33 @@
+BasedOnStyle: LLVM
+UseTab: Never
+IndentWidth: 2
+TabWidth: 2
+BreakBeforeBraces: Custom
+AllowShortFunctionsOnASingleLine: InlineOnly
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLambdasOnASingleLine: true
+AllowAllArgumentsOnNextLine: true
+IndentCaseLabels: true
+AccessModifierOffset: -2
+NamespaceIndentation: None
+FixNamespaceComments: false
+PackConstructorInitializers: Never
+AlignAfterOpenBracket: AlwaysBreak
+InsertBraces: true
+BraceWrapping:
+  AfterClass: true # false
+  AfterControlStatement: false
+  AfterEnum: true # false
+  AfterFunction: true # false
+  AfterNamespace: false
+  AfterObjCDeclaration: true # false
+  AfterStruct: true # false
+  AfterUnion: true # false
+  AfterExternBlock: false
+  BeforeCatch: false
+  BeforeElse: false
+  IndentBraces: false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+ColumnLimit: 140
diff --git a/.vscode/settings.json b/.vscode/settings.json
index c5c2fbb..87f6b90 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -5,5 +5,6 @@
     ],
     "cmake.preferredGenerators": [
         "Ninja"
-    ]
+    ],
+    "sonarlint.pathToCompileCommands": "${workspaceFolder}/compile_commands.json"
 }
\ No newline at end of file
diff --git a/Src/main.c b/Src/main.c
index fabea7d..37fd826 100644
--- a/Src/main.c
+++ b/Src/main.c
@@ -19,8 +19,8 @@
 /* Includes ------------------------------------------------------------------*/
 #include "main.h"
 #include "dma.h"
-#include "gpio.h"
 #include "usart.h"
+#include "gpio.h"
 
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
@@ -57,21 +57,15 @@ void SystemClock_Config(void);
 
 /* Private user code ---------------------------------------------------------*/
 /* USER CODE BEGIN 0 */
-void SendStr(char const *str) {
-  while (*str) {
-    LL_USART_ClearFlag_TC(USART1);
-    LL_USART_TransmitData8(USART1, *str++);
-    while (!LL_USART_IsActiveFlag_TC(USART1))
-      ;
-  }
-}
+
 /* USER CODE END 0 */
 
 /**
- * @brief  The application entry point.
- * @retval int
- */
-int main(void) {
+  * @brief  The application entry point.
+  * @retval int
+  */
+int main(void)
+{
 
   /* USER CODE BEGIN 1 */
 
@@ -79,8 +73,7 @@ int main(void) {
 
   /* MCU Configuration--------------------------------------------------------*/
 
-  /* Reset of all peripherals, Initializes the Flash interface and the Systick.
-   */
+  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
   LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_AFIO);
   LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
 
@@ -88,7 +81,7 @@ int main(void) {
   NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
 
   /** NOJTAG: JTAG-DP Disabled and SW-DP Enabled
-   */
+  */
   LL_GPIO_AF_Remap_SWJ_NOJTAG();
 
   /* USER CODE BEGIN Init */
@@ -113,38 +106,46 @@ int main(void) {
   /* Infinite loop */
   /* USER CODE BEGIN WHILE */
   app_main();
-  /* USER CODE END WHILE */
+    /* USER CODE END WHILE */
 
-  /* USER CODE BEGIN 3 */
+    /* USER CODE BEGIN 3 */
   /* USER CODE END 3 */
 }
 
 /**
- * @brief System Clock Configuration
- * @retval None
- */
-void SystemClock_Config(void) {
+  * @brief System Clock Configuration
+  * @retval None
+  */
+void SystemClock_Config(void)
+{
   LL_FLASH_SetLatency(LL_FLASH_LATENCY_2);
-  while (LL_FLASH_GetLatency() != LL_FLASH_LATENCY_2) {
+  while(LL_FLASH_GetLatency()!= LL_FLASH_LATENCY_2)
+  {
   }
   LL_RCC_HSE_Enable();
 
-  /* Wait till HSE is ready */
-  while (LL_RCC_HSE_IsReady() != 1) {
+   /* Wait till HSE is ready */
+  while(LL_RCC_HSE_IsReady() != 1)
+  {
+
   }
   LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSE_DIV_1, LL_RCC_PLL_MUL_9);
   LL_RCC_PLL_Enable();
 
-  /* Wait till PLL is ready */
-  while (LL_RCC_PLL_IsReady() != 1) {
+   /* Wait till PLL is ready */
+  while(LL_RCC_PLL_IsReady() != 1)
+  {
+
   }
   LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
   LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_2);
   LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1);
   LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
 
-  /* Wait till System clock is ready */
-  while (LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL) {
+   /* Wait till System clock is ready */
+  while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL)
+  {
+
   }
   LL_Init1msTick(72000000);
   LL_SetSystemCoreClock(72000000);
@@ -155,10 +156,11 @@ void SystemClock_Config(void) {
 /* USER CODE END 4 */
 
 /**
- * @brief  This function is executed in case of error occurrence.
- * @retval None
- */
-void Error_Handler(void) {
+  * @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();
@@ -167,15 +169,16 @@ void Error_Handler(void) {
   /* USER CODE END Error_Handler_Debug */
 }
 
-#ifdef USE_FULL_ASSERT
+#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) {
+  * @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,
diff --git a/Src/stm32f1xx_it.c b/Src/stm32f1xx_it.c
index bc84c8a..11682ea 100644
--- a/Src/stm32f1xx_it.c
+++ b/Src/stm32f1xx_it.c
@@ -18,9 +18,8 @@
 /* USER CODE END Header */
 
 /* Includes ------------------------------------------------------------------*/
-#include "stm32f1xx_it.h"
 #include "main.h"
-
+#include "stm32f1xx_it.h"
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
 
@@ -68,9 +67,10 @@
 /*           Cortex-M3 Processor Interruption and Exception Handlers          */
 /******************************************************************************/
 /**
- * @brief This function handles Non maskable interrupt.
- */
-void NMI_Handler(void) {
+  * @brief This function handles Non maskable interrupt.
+  */
+void NMI_Handler(void)
+{
   /* USER CODE BEGIN NonMaskableInt_IRQn 0 */
 
   /* USER CODE END NonMaskableInt_IRQn 0 */
@@ -81,61 +81,70 @@ void NMI_Handler(void) {
 }
 
 /**
- * @brief This function handles Hard fault interrupt.
- */
-void HardFault_Handler(void) {
+  * @brief This function handles Hard fault interrupt.
+  */
+void HardFault_Handler(void)
+{
   /* USER CODE BEGIN HardFault_IRQn 0 */
 
   /* USER CODE END HardFault_IRQn 0 */
-  while (1) {
+  while (1)
+  {
     /* USER CODE BEGIN W1_HardFault_IRQn 0 */
     /* USER CODE END W1_HardFault_IRQn 0 */
   }
 }
 
 /**
- * @brief This function handles Memory management fault.
- */
-void MemManage_Handler(void) {
+  * @brief This function handles Memory management fault.
+  */
+void MemManage_Handler(void)
+{
   /* USER CODE BEGIN MemoryManagement_IRQn 0 */
 
   /* USER CODE END MemoryManagement_IRQn 0 */
-  while (1) {
+  while (1)
+  {
     /* USER CODE BEGIN W1_MemoryManagement_IRQn 0 */
     /* USER CODE END W1_MemoryManagement_IRQn 0 */
   }
 }
 
 /**
- * @brief This function handles Prefetch fault, memory access fault.
- */
-void BusFault_Handler(void) {
+  * @brief This function handles Prefetch fault, memory access fault.
+  */
+void BusFault_Handler(void)
+{
   /* USER CODE BEGIN BusFault_IRQn 0 */
 
   /* USER CODE END BusFault_IRQn 0 */
-  while (1) {
+  while (1)
+  {
     /* USER CODE BEGIN W1_BusFault_IRQn 0 */
     /* USER CODE END W1_BusFault_IRQn 0 */
   }
 }
 
 /**
- * @brief This function handles Undefined instruction or illegal state.
- */
-void UsageFault_Handler(void) {
+  * @brief This function handles Undefined instruction or illegal state.
+  */
+void UsageFault_Handler(void)
+{
   /* USER CODE BEGIN UsageFault_IRQn 0 */
 
   /* USER CODE END UsageFault_IRQn 0 */
-  while (1) {
+  while (1)
+  {
     /* USER CODE BEGIN W1_UsageFault_IRQn 0 */
     /* USER CODE END W1_UsageFault_IRQn 0 */
   }
 }
 
 /**
- * @brief This function handles System service call via SWI instruction.
- */
-void SVC_Handler(void) {
+  * @brief This function handles System service call via SWI instruction.
+  */
+void SVC_Handler(void)
+{
   /* USER CODE BEGIN SVCall_IRQn 0 */
 
   /* USER CODE END SVCall_IRQn 0 */
@@ -145,9 +154,10 @@ void SVC_Handler(void) {
 }
 
 /**
- * @brief This function handles Debug monitor.
- */
-void DebugMon_Handler(void) {
+  * @brief This function handles Debug monitor.
+  */
+void DebugMon_Handler(void)
+{
   /* USER CODE BEGIN DebugMonitor_IRQn 0 */
 
   /* USER CODE END DebugMonitor_IRQn 0 */
@@ -157,9 +167,10 @@ void DebugMon_Handler(void) {
 }
 
 /**
- * @brief This function handles Pendable request for system service.
- */
-void PendSV_Handler(void) {
+  * @brief This function handles Pendable request for system service.
+  */
+void PendSV_Handler(void)
+{
   /* USER CODE BEGIN PendSV_IRQn 0 */
 
   /* USER CODE END PendSV_IRQn 0 */
@@ -169,9 +180,10 @@ void PendSV_Handler(void) {
 }
 
 /**
- * @brief This function handles System tick timer.
- */
-void SysTick_Handler(void) {
+  * @brief This function handles System tick timer.
+  */
+void SysTick_Handler(void)
+{
   /* USER CODE BEGIN SysTick_IRQn 0 */
 
   /* USER CODE END SysTick_IRQn 0 */
@@ -189,9 +201,10 @@ void SysTick_Handler(void) {
 /******************************************************************************/
 
 /**
- * @brief This function handles DMA1 channel4 global interrupt.
- */
-void DMA1_Channel4_IRQHandler(void) {
+  * @brief This function handles DMA1 channel4 global interrupt.
+  */
+void DMA1_Channel4_IRQHandler(void)
+{
   /* USER CODE BEGIN DMA1_Channel4_IRQn 0 */
   dma1_channel4_irq_handler();
   /* USER CODE END DMA1_Channel4_IRQn 0 */
@@ -201,9 +214,10 @@ void DMA1_Channel4_IRQHandler(void) {
 }
 
 /**
- * @brief This function handles DMA1 channel5 global interrupt.
- */
-void DMA1_Channel5_IRQHandler(void) {
+  * @brief This function handles DMA1 channel5 global interrupt.
+  */
+void DMA1_Channel5_IRQHandler(void)
+{
   /* USER CODE BEGIN DMA1_Channel5_IRQn 0 */
   dma1_channel5_irq_handler();
   /* USER CODE END DMA1_Channel5_IRQn 0 */
@@ -213,11 +227,12 @@ void DMA1_Channel5_IRQHandler(void) {
 }
 
 /**
- * @brief This function handles USART1 global interrupt.
- */
-void USART1_IRQHandler(void) {
+  * @brief This function handles USART1 global interrupt.
+  */
+void USART1_IRQHandler(void)
+{
   /* USER CODE BEGIN USART1_IRQn 0 */
-
+  usart1_irq_handler();
   /* USER CODE END USART1_IRQn 0 */
   /* USER CODE BEGIN USART1_IRQn 1 */
 
diff --git a/app/inc/irq_bridge.h b/app/inc/irq_bridge.h
index 9a329c5..3e95487 100644
--- a/app/inc/irq_bridge.h
+++ b/app/inc/irq_bridge.h
@@ -7,6 +7,7 @@ extern "C" {
 
 void dma1_channel4_irq_handler();
 void dma1_channel5_irq_handler();
+void usart1_irq_handler();
 
 #if defined(__cplusplus)
 }
diff --git a/app/src/app.cpp b/app/src/app.cpp
index 32c975b..0533976 100644
--- a/app/src/app.cpp
+++ b/app/src/app.cpp
@@ -4,7 +4,8 @@
 
 #include <f1ll/console_handler.h>
 
-void app_main() {
+void app_main()
+{
   f1ll::console_handler::init(USART1, DMA1, LL_DMA_CHANNEL_5, LL_DMA_CHANNEL_4);
 
   while (true) {
@@ -12,4 +13,4 @@ void app_main() {
     LL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin);
     LL_mDelay(500);
   }
-}
\ No newline at end of file
+}
diff --git a/app/src/irq_bridge.cpp b/app/src/irq_bridge.cpp
index 7cc11cc..3545f4b 100644
--- a/app/src/irq_bridge.cpp
+++ b/app/src/irq_bridge.cpp
@@ -2,10 +2,17 @@
 
 #include <f1ll/console_handler.h>
 
-void dma1_channel4_irq_handler() {
+void dma1_channel4_irq_handler()
+{
   f1ll::console_handler::instance().tx_dma_isr();
 }
 
-void dma1_channel5_irq_handler() {
+void dma1_channel5_irq_handler()
+{
   f1ll::console_handler::instance().rx_dma_isr();
 }
+
+void usart1_irq_handler()
+{
+  f1ll::console_handler::instance().usart_isr();
+}
\ No newline at end of file
diff --git a/f1ll/inc/f1ll/console_handler.h b/f1ll/inc/f1ll/console_handler.h
index c85122b..5c115f1 100644
--- a/f1ll/inc/f1ll/console_handler.h
+++ b/f1ll/inc/f1ll/console_handler.h
@@ -13,15 +13,15 @@
 
 namespace f1ll {
 
-class console_handler : public usart_core, public singleton<console_handler> {
+class console_handler : public usart_core, public singleton<console_handler>
+{
   friend class singleton<console_handler>;
 
 public:
   void print(char const *s);
 
 private:
-  console_handler(USART_TypeDef *usart, DMA_TypeDef *dma, uint32_t channelRx,
-                  uint32_t channelTx);
+  console_handler(USART_TypeDef *usart, DMA_TypeDef *dma, uint32_t channelRx, uint32_t channelTx);
 
   // LL_UsartCore pure virtual function implementations
   virtual void receiver_idle(void);
diff --git a/f1ll/inc/f1ll/dma_helper.h b/f1ll/inc/f1ll/dma_helper.h
index 466121d..0c7d52b 100644
--- a/f1ll/inc/f1ll/dma_helper.h
+++ b/f1ll/inc/f1ll/dma_helper.h
@@ -11,39 +11,38 @@
 #include <inttypes.h>
 #include <platform/dma_ll.h>
 
-namespace f1ll
+namespace f1ll {
+
+class dma_helper
 {
+public:
+  dma_helper(DMA_TypeDef *dma, uint32_t channel);
+  dma_helper(dma_helper const &base) = default;
 
-  class dma_helper
-  {
-  public:
-    dma_helper(DMA_TypeDef *dma, uint32_t channel);
-    dma_helper(dma_helper const &base) = default;
+  inline DMA_TypeDef *get_dma() const { return m_dma; }
+  inline uint32_t get_channel() const { return m_channel; }
+  inline volatile uint32_t *get_is_reg() const { return m_is_reg; }
+  inline volatile uint32_t *get_ifc_reg() const { return m_ifc_reg; }
+  inline uint32_t get_te_mask() const { return m_te_masks[m_channel - 1]; }
+  inline uint32_t get_ht_mask() const { return m_ht_masks[m_channel - 1]; }
+  inline uint32_t get_tc_mask() const { return m_tc_masks[m_channel - 1]; }
+  inline uint32_t get_gi_mask() const { return m_gi_masks[m_channel - 1]; }
 
-    inline DMA_TypeDef *get_dma() const { return m_dma; }
-    inline uint32_t get_channel() const { return m_channel; }
-    inline volatile uint32_t *get_is_reg() const { return m_is_reg; }
-    inline volatile uint32_t *get_ifc_reg() const { return m_ifc_reg; }
-    inline uint32_t get_te_mask() const { return m_te_masks[m_channel - 1]; }
-    inline uint32_t get_ht_mask() const { return m_ht_masks[m_channel - 1]; }
-    inline uint32_t get_tc_mask() const { return m_tc_masks[m_channel - 1]; }
-    inline uint32_t get_gi_mask() const { return m_gi_masks[m_channel - 1]; }
+  inline bool is_enabled_it_te() { return LL_DMA_IsEnabledIT_TE(m_dma, m_channel) != 0; }
+  inline bool is_enabled_it_ht() { return LL_DMA_IsEnabledIT_HT(m_dma, m_channel) != 0; }
+  inline bool is_enabled_it_tc() { return LL_DMA_IsEnabledIT_TC(m_dma, m_channel) != 0; }
 
-    inline bool is_enabled_it_te() { return LL_DMA_IsEnabledIT_TE(m_dma, m_channel) != 0; }
-    inline bool is_enabled_it_ht() { return LL_DMA_IsEnabledIT_HT(m_dma, m_channel) != 0; }
-    inline bool is_enabled_it_tc() { return LL_DMA_IsEnabledIT_TC(m_dma, m_channel) != 0; }
+private:
+  DMA_TypeDef *m_dma;
+  uint32_t m_channel;
+  volatile uint32_t *m_is_reg;
+  volatile uint32_t *m_ifc_reg;
 
-  private:
-    DMA_TypeDef *m_dma;
-    uint32_t m_channel;
-    volatile uint32_t *m_is_reg;
-    volatile uint32_t *m_ifc_reg;
-
-    static const uint32_t m_te_masks[7];
-    static const uint32_t m_ht_masks[7];
-    static const uint32_t m_tc_masks[7];
-    static const uint32_t m_gi_masks[7];
-  };
+  static const uint32_t m_te_masks[7];
+  static const uint32_t m_ht_masks[7];
+  static const uint32_t m_tc_masks[7];
+  static const uint32_t m_gi_masks[7];
+};
 
 } /* namespace f4ll */
 
diff --git a/f1ll/inc/f1ll/singleton.h b/f1ll/inc/f1ll/singleton.h
index 92a6c93..9442e57 100644
--- a/f1ll/inc/f1ll/singleton.h
+++ b/f1ll/inc/f1ll/singleton.h
@@ -3,10 +3,12 @@
 
 #include <utility>
 
-template <typename T> class singleton {
+template <typename T> class singleton
+{
 public:
   static T &instance() { return *m_instance; }
-  template <typename... args_t> static T &init(args_t &&...args) {
+  template <typename... args_t> static T &init(args_t &&...args)
+  {
     static T instance{std::forward<args_t>(args)...};
     m_instance = &instance;
     return instance;
diff --git a/f1ll/inc/f1ll/usart_core.h b/f1ll/inc/f1ll/usart_core.h
index c013f91..80103bd 100644
--- a/f1ll/inc/f1ll/usart_core.h
+++ b/f1ll/inc/f1ll/usart_core.h
@@ -13,7 +13,8 @@
 
 namespace f1ll {
 
-class usart_core {
+class usart_core
+{
 public:
   static inline void usart_irq(usart_core *_this) { _this->usart_isr(); }
   static inline void rx_dma_irq(usart_core *_this) { _this->rx_dma_isr(); }
@@ -23,8 +24,7 @@ public:
   void setup_receive(void *buffer, uint16_t length);
 
 protected:
-  usart_core(USART_TypeDef *usart, DMA_TypeDef *dma, uint32_t channel_rx,
-             uint32_t stream_tx);
+  usart_core(USART_TypeDef *usart, DMA_TypeDef *dma, uint32_t channel_rx, uint32_t stream_tx);
 
   USART_TypeDef *m_usart;
   dma_helper m_rxDma;