diff --git a/bootloader/targets/f5/api-hal/api-hal-i2c.c b/bootloader/targets/f5/api-hal/api-hal-i2c.c
index 999a200d..d9aca753 100644
--- a/bootloader/targets/f5/api-hal/api-hal-i2c.c
+++ b/bootloader/targets/f5/api-hal/api-hal-i2c.c
@@ -12,7 +12,7 @@ void api_hal_i2c_init() {
     LL_RCC_SetI2CClockSource(LL_RCC_I2C1_CLKSOURCE_PCLK1);
 
     LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);
-    GPIO_InitStruct.Pin = I2C_SCL_Pin | I2C_SDA_Pin;
+    GPIO_InitStruct.Pin = POWER_I2C_SCL_Pin | POWER_I2C_SDA_Pin;
     GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
     GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
     GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
@@ -23,7 +23,7 @@ void api_hal_i2c_init() {
     LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);
 
     I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C;
-    I2C_InitStruct.Timing = 0x10707DBC;
+    I2C_InitStruct.Timing = POWER_I2C_TIMINGS;
     I2C_InitStruct.AnalogFilter = LL_I2C_ANALOGFILTER_ENABLE;
     I2C_InitStruct.DigitalFilter = 0;
     I2C_InitStruct.OwnAddress1 = 0;
diff --git a/bootloader/targets/f5/api-hal/api-hal-resources.h b/bootloader/targets/f5/api-hal/api-hal-resources.h
index 78ebaa9c..8bf55562 100644
--- a/bootloader/targets/f5/api-hal/api-hal-resources.h
+++ b/bootloader/targets/f5/api-hal/api-hal-resources.h
@@ -7,12 +7,17 @@
 extern "C" {
 #endif
 
-#define I2C_SCL_Pin LL_GPIO_PIN_9
-#define I2C_SCL_GPIO_Port GPIOA
-#define I2C_SDA_Pin LL_GPIO_PIN_10
-#define I2C_SDA_GPIO_Port GPIOA
+#define POWER_I2C_SCL_Pin LL_GPIO_PIN_9
+#define POWER_I2C_SCL_GPIO_Port GPIOA
+#define POWER_I2C_SDA_Pin LL_GPIO_PIN_10
+#define POWER_I2C_SDA_GPIO_Port GPIOA
 
 #define POWER_I2C I2C1
+/* Timing register value is computed with the STM32CubeMX Tool,
+  * Fast Mode @100kHz with I2CCLK = 64 MHz,
+  * rise time = 0ns, fall time = 0ns
+  */
+#define POWER_I2C_TIMINGS 0x10707DBC
 
 /* Input Keys */
 typedef enum {
diff --git a/firmware/targets/f4/api-hal/api-hal-i2c.c b/firmware/targets/f4/api-hal/api-hal-i2c.c
index 087af97e..b56895a1 100644
--- a/firmware/targets/f4/api-hal/api-hal-i2c.c
+++ b/firmware/targets/f4/api-hal/api-hal-i2c.c
@@ -1,5 +1,6 @@
 #include <api-hal-i2c.h>
 #include <stm32wbxx_ll_i2c.h>
+#include <stm32wbxx_ll_gpio.h>
 #include <furi.h>
 
 osMutexId_t api_hal_i2c_mutex = NULL;
@@ -7,6 +8,36 @@ osMutexId_t api_hal_i2c_mutex = NULL;
 void api_hal_i2c_init() {
     api_hal_i2c_mutex = osMutexNew(NULL);
     furi_check(api_hal_i2c_mutex);
+
+    LL_I2C_InitTypeDef I2C_InitStruct = {0};
+    LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+    LL_RCC_SetI2CClockSource(LL_RCC_I2C1_CLKSOURCE_PCLK1);
+
+    LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);
+    GPIO_InitStruct.Pin = POWER_I2C_SCL_Pin | POWER_I2C_SDA_Pin;
+    GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
+    GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
+    GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
+    GPIO_InitStruct.Alternate = LL_GPIO_AF_4;
+    LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+    LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);
+
+    I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C;
+    I2C_InitStruct.Timing = POWER_I2C_TIMINGS;
+    I2C_InitStruct.AnalogFilter = LL_I2C_ANALOGFILTER_ENABLE;
+    I2C_InitStruct.DigitalFilter = 0;
+    I2C_InitStruct.OwnAddress1 = 0;
+    I2C_InitStruct.TypeAcknowledge = LL_I2C_ACK;
+    I2C_InitStruct.OwnAddrSize = LL_I2C_OWNADDRESS1_7BIT;
+    LL_I2C_Init(I2C1, &I2C_InitStruct);
+    LL_I2C_EnableAutoEndMode(I2C1);
+    LL_I2C_SetOwnAddress2(I2C1, 0, LL_I2C_OWNADDRESS2_NOMASK);
+    LL_I2C_DisableOwnAddress2(I2C1);
+    LL_I2C_DisableGeneralCall(I2C1);
+    LL_I2C_EnableClockStretching(I2C1);
 }
 
 void api_hal_i2c_tx(I2C_TypeDef* instance, uint8_t address, const uint8_t *data, uint8_t size) {
diff --git a/firmware/targets/f4/api-hal/api-hal-resources.h b/firmware/targets/f4/api-hal/api-hal-resources.h
index e5081e43..d7a1493a 100644
--- a/firmware/targets/f4/api-hal/api-hal-resources.h
+++ b/firmware/targets/f4/api-hal/api-hal-resources.h
@@ -10,12 +10,17 @@
 extern "C" {
 #endif
 
-#define I2C_SCL_Pin LL_GPIO_PIN_9
-#define I2C_SCL_GPIO_Port GPIOA
-#define I2C_SDA_Pin LL_GPIO_PIN_10
-#define I2C_SDA_GPIO_Port GPIOA
+#define POWER_I2C_SCL_Pin LL_GPIO_PIN_9
+#define POWER_I2C_SCL_GPIO_Port GPIOA
+#define POWER_I2C_SDA_Pin LL_GPIO_PIN_10
+#define POWER_I2C_SDA_GPIO_Port GPIOA
 
 #define POWER_I2C I2C1
+/* Timing register value is computed with the STM32CubeMX Tool,
+  * Fast Mode @100kHz with I2CCLK = 64 MHz,
+  * rise time = 0ns, fall time = 0ns
+  */
+#define POWER_I2C_TIMINGS 0x10707DBC
 
 /* Input Related Constants */
 #define INPUT_DEBOUNCE_TICKS 20
diff --git a/firmware/targets/f4/target.mk b/firmware/targets/f4/target.mk
index 7c8b4bb6..7c063807 100644
--- a/firmware/targets/f4/target.mk
+++ b/firmware/targets/f4/target.mk
@@ -53,8 +53,6 @@ C_SOURCES		+= \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_flash_ex.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_gpio.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_hsem.c \
-	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_i2c.c \
-	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_i2c_ex.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_ipcc.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_pcd.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_pcd_ex.c \
@@ -74,6 +72,8 @@ C_SOURCES		+= \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_uart_ex.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_lptim.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_adc.c \
+	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_gpio.c \
+	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_i2c.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_usb.c \
 	$(CUBE_DIR)/Middlewares/Third_Party/FreeRTOS/Source/croutine.c \
 	$(CUBE_DIR)/Middlewares/Third_Party/FreeRTOS/Source/event_groups.c \
@@ -97,6 +97,7 @@ ASM_SOURCES += $(MXPROJECT_DIR)/startup_stm32wb55xx_cm4.s
 
 # Common
 CFLAGS			+= \
+	-DUSE_FULL_LL_DRIVER \
 	-DUSE_HAL_DRIVER \
 	-DHAVE_FREERTOS \
 	-DDEBUG_UART=huart1
diff --git a/firmware/targets/f5/api-hal/api-hal-i2c.c b/firmware/targets/f5/api-hal/api-hal-i2c.c
index 087af97e..b56895a1 100644
--- a/firmware/targets/f5/api-hal/api-hal-i2c.c
+++ b/firmware/targets/f5/api-hal/api-hal-i2c.c
@@ -1,5 +1,6 @@
 #include <api-hal-i2c.h>
 #include <stm32wbxx_ll_i2c.h>
+#include <stm32wbxx_ll_gpio.h>
 #include <furi.h>
 
 osMutexId_t api_hal_i2c_mutex = NULL;
@@ -7,6 +8,36 @@ osMutexId_t api_hal_i2c_mutex = NULL;
 void api_hal_i2c_init() {
     api_hal_i2c_mutex = osMutexNew(NULL);
     furi_check(api_hal_i2c_mutex);
+
+    LL_I2C_InitTypeDef I2C_InitStruct = {0};
+    LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+    LL_RCC_SetI2CClockSource(LL_RCC_I2C1_CLKSOURCE_PCLK1);
+
+    LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);
+    GPIO_InitStruct.Pin = POWER_I2C_SCL_Pin | POWER_I2C_SDA_Pin;
+    GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
+    GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
+    GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
+    GPIO_InitStruct.Alternate = LL_GPIO_AF_4;
+    LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+    LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);
+
+    I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C;
+    I2C_InitStruct.Timing = POWER_I2C_TIMINGS;
+    I2C_InitStruct.AnalogFilter = LL_I2C_ANALOGFILTER_ENABLE;
+    I2C_InitStruct.DigitalFilter = 0;
+    I2C_InitStruct.OwnAddress1 = 0;
+    I2C_InitStruct.TypeAcknowledge = LL_I2C_ACK;
+    I2C_InitStruct.OwnAddrSize = LL_I2C_OWNADDRESS1_7BIT;
+    LL_I2C_Init(I2C1, &I2C_InitStruct);
+    LL_I2C_EnableAutoEndMode(I2C1);
+    LL_I2C_SetOwnAddress2(I2C1, 0, LL_I2C_OWNADDRESS2_NOMASK);
+    LL_I2C_DisableOwnAddress2(I2C1);
+    LL_I2C_DisableGeneralCall(I2C1);
+    LL_I2C_EnableClockStretching(I2C1);
 }
 
 void api_hal_i2c_tx(I2C_TypeDef* instance, uint8_t address, const uint8_t *data, uint8_t size) {
diff --git a/firmware/targets/f5/api-hal/api-hal-resources.h b/firmware/targets/f5/api-hal/api-hal-resources.h
index e5081e43..d7a1493a 100644
--- a/firmware/targets/f5/api-hal/api-hal-resources.h
+++ b/firmware/targets/f5/api-hal/api-hal-resources.h
@@ -10,12 +10,17 @@
 extern "C" {
 #endif
 
-#define I2C_SCL_Pin LL_GPIO_PIN_9
-#define I2C_SCL_GPIO_Port GPIOA
-#define I2C_SDA_Pin LL_GPIO_PIN_10
-#define I2C_SDA_GPIO_Port GPIOA
+#define POWER_I2C_SCL_Pin LL_GPIO_PIN_9
+#define POWER_I2C_SCL_GPIO_Port GPIOA
+#define POWER_I2C_SDA_Pin LL_GPIO_PIN_10
+#define POWER_I2C_SDA_GPIO_Port GPIOA
 
 #define POWER_I2C I2C1
+/* Timing register value is computed with the STM32CubeMX Tool,
+  * Fast Mode @100kHz with I2CCLK = 64 MHz,
+  * rise time = 0ns, fall time = 0ns
+  */
+#define POWER_I2C_TIMINGS 0x10707DBC
 
 /* Input Related Constants */
 #define INPUT_DEBOUNCE_TICKS 20
diff --git a/firmware/targets/f5/cube/Inc/i2c.h b/firmware/targets/f5/cube/Inc/i2c.h
index 48a76906..d5a09031 100644
--- a/firmware/targets/f5/cube/Inc/i2c.h
+++ b/firmware/targets/f5/cube/Inc/i2c.h
@@ -31,8 +31,6 @@ extern "C" {
 
 /* USER CODE END Includes */
 
-extern I2C_HandleTypeDef hi2c1;
-
 /* USER CODE BEGIN Private defines */
 
 /* USER CODE END Private defines */
diff --git a/firmware/targets/f5/cube/Inc/main.h b/firmware/targets/f5/cube/Inc/main.h
index eb24cd42..90c08db8 100644
--- a/firmware/targets/f5/cube/Inc/main.h
+++ b/firmware/targets/f5/cube/Inc/main.h
@@ -29,6 +29,18 @@ extern "C" {
 
 /* Includes ------------------------------------------------------------------*/
 #include "stm32wbxx_hal.h"
+#include "stm32wbxx.h"
+#include "stm32wbxx_ll_i2c.h"
+#include "stm32wbxx_ll_bus.h"
+#include "stm32wbxx_ll_cortex.h"
+#include "stm32wbxx_ll_rcc.h"
+#include "stm32wbxx_ll_system.h"
+#include "stm32wbxx_ll_utils.h"
+#include "stm32wbxx_ll_pwr.h"
+#include "stm32wbxx_ll_gpio.h"
+#include "stm32wbxx_ll_dma.h"
+
+#include "stm32wbxx_ll_exti.h"
 
 /* Private includes ----------------------------------------------------------*/
 /* USER CODE BEGIN Includes */
diff --git a/firmware/targets/f5/cube/Inc/stm32_assert.h b/firmware/targets/f5/cube/Inc/stm32_assert.h
new file mode 100644
index 00000000..734c6558
--- /dev/null
+++ b/firmware/targets/f5/cube/Inc/stm32_assert.h
@@ -0,0 +1,53 @@
+/**
+  ******************************************************************************
+  * @file    stm32_assert.h
+  * @brief   STM32 assert file.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32_ASSERT_H
+#define __STM32_ASSERT_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Includes ------------------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+#ifdef  USE_FULL_ASSERT
+/**
+  * @brief  The assert_param macro is used for function's parameters check.
+  * @param  expr: If expr is false, it calls assert_failed function
+  *         which reports the name of the source file and the source
+  *         line number of the call that failed.
+  *         If expr is true, it returns no value.
+  * @retval None
+  */
+ #define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
+/* Exported functions ------------------------------------------------------- */
+  void assert_failed(uint8_t* file, uint32_t line);
+#else
+  #define assert_param(expr) ((void)0U)
+#endif /* USE_FULL_ASSERT */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32_ASSERT_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/targets/f5/cube/Inc/stm32wbxx_hal_conf.h b/firmware/targets/f5/cube/Inc/stm32wbxx_hal_conf.h
index d6d1e73f..c58d051d 100644
--- a/firmware/targets/f5/cube/Inc/stm32wbxx_hal_conf.h
+++ b/firmware/targets/f5/cube/Inc/stm32wbxx_hal_conf.h
@@ -38,7 +38,7 @@
 #define HAL_COMP_MODULE_ENABLED
 #define HAL_CRC_MODULE_ENABLED
 #define HAL_HSEM_MODULE_ENABLED
-#define HAL_I2C_MODULE_ENABLED
+/*#define HAL_I2C_MODULE_ENABLED   */
 /*#define HAL_IPCC_MODULE_ENABLED   */
 /*#define HAL_IRDA_MODULE_ENABLED   */
 /*#define HAL_IWDG_MODULE_ENABLED   */
diff --git a/firmware/targets/f5/cube/Makefile b/firmware/targets/f5/cube/Makefile
index f437f041..f3ee2eba 100644
--- a/firmware/targets/f5/cube/Makefile
+++ b/firmware/targets/f5/cube/Makefile
@@ -1,5 +1,5 @@
 ##########################################################################################################################
-# File automatically-generated by tool: [projectgenerator] version: [3.11.0-B13] date: [Mon Mar 01 14:14:38 MSK 2021] 
+# File automatically-generated by tool: [projectgenerator] version: [3.11.0-B13] date: [Wed Mar 03 12:02:50 MSK 2021] 
 ##########################################################################################################################
 
 # ------------------------------------------------
@@ -157,7 +157,12 @@ Src/system_stm32wbxx.c \
 /home/aanper/STM32Cube/Repository/STM32Cube_FW_WB_V1.10.0/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c \
 /home/aanper/STM32Cube/Repository/STM32Cube_FW_WB_V1.10.0/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ctlreq.c \
 /home/aanper/STM32Cube/Repository/STM32Cube_FW_WB_V1.10.0/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_ioreq.c \
-/home/aanper/STM32Cube/Repository/STM32Cube_FW_WB_V1.10.0/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c
+/home/aanper/STM32Cube/Repository/STM32Cube_FW_WB_V1.10.0/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c \
+/Users/aku/STM32Cube/Repository/STM32Cube_FW_WB_V1.10.0/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_utils.c \
+/Users/aku/STM32Cube/Repository/STM32Cube_FW_WB_V1.10.0/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_exti.c \
+/Users/aku/STM32Cube/Repository/STM32Cube_FW_WB_V1.10.0/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_i2c.c \
+/Users/aku/STM32Cube/Repository/STM32Cube_FW_WB_V1.10.0/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_gpio.c \
+/Users/aku/STM32Cube/Repository/STM32Cube_FW_WB_V1.10.0/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_dma.c
 
 # ASM sources
 ASM_SOURCES =  \
@@ -206,7 +211,8 @@ AS_DEFS =
 # C defines
 C_DEFS =  \
 -DUSE_HAL_DRIVER \
--DSTM32WB55xx
+-DSTM32WB55xx \
+-DUSE_FULL_LL_DRIVER
 
 
 # AS includes
diff --git a/firmware/targets/f5/cube/Src/i2c.c b/firmware/targets/f5/cube/Src/i2c.c
index 3f2b619e..c41b35d5 100644
--- a/firmware/targets/f5/cube/Src/i2c.c
+++ b/firmware/targets/f5/cube/Src/i2c.c
@@ -24,95 +24,47 @@
 
 /* USER CODE END 0 */
 
-I2C_HandleTypeDef hi2c1;
-
 /* I2C1 init function */
 void MX_I2C1_Init(void)
 {
+  LL_I2C_InitTypeDef I2C_InitStruct = {0};
 
-  hi2c1.Instance = I2C1;
-  hi2c1.Init.Timing = 0x10707DBC;
-  hi2c1.Init.OwnAddress1 = 0;
-  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
-  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
-  hi2c1.Init.OwnAddress2 = 0;
-  hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
-  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
-  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
-  if (HAL_I2C_Init(&hi2c1) != HAL_OK)
-  {
-    Error_Handler();
-  }
-  /** Configure Analogue filter
+  LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+  LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOA);
+  /**I2C1 GPIO Configuration
+  PA9   ------> I2C1_SCL
+  PA10   ------> I2C1_SDA
   */
-  if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
-  {
-    Error_Handler();
-  }
-  /** Configure Digital filter
+  GPIO_InitStruct.Pin = LL_GPIO_PIN_9|LL_GPIO_PIN_10;
+  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
+  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
+  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
+  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
+  GPIO_InitStruct.Alternate = LL_GPIO_AF_4;
+  LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+  /* Peripheral clock enable */
+  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);
+
+  /** I2C Initialization
   */
-  if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
-  {
-    Error_Handler();
-  }
+  I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C;
+  I2C_InitStruct.Timing = 0x10707DBC;
+  I2C_InitStruct.AnalogFilter = LL_I2C_ANALOGFILTER_ENABLE;
+  I2C_InitStruct.DigitalFilter = 0;
+  I2C_InitStruct.OwnAddress1 = 0;
+  I2C_InitStruct.TypeAcknowledge = LL_I2C_ACK;
+  I2C_InitStruct.OwnAddrSize = LL_I2C_OWNADDRESS1_7BIT;
+  LL_I2C_Init(I2C1, &I2C_InitStruct);
+  LL_I2C_EnableAutoEndMode(I2C1);
+  LL_I2C_SetOwnAddress2(I2C1, 0, LL_I2C_OWNADDRESS2_NOMASK);
+  LL_I2C_DisableOwnAddress2(I2C1);
+  LL_I2C_DisableGeneralCall(I2C1);
+  LL_I2C_EnableClockStretching(I2C1);
 
 }
 
-void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
-{
-
-  GPIO_InitTypeDef GPIO_InitStruct = {0};
-  if(i2cHandle->Instance==I2C1)
-  {
-  /* USER CODE BEGIN I2C1_MspInit 0 */
-
-  /* USER CODE END I2C1_MspInit 0 */
-
-    __HAL_RCC_GPIOA_CLK_ENABLE();
-    /**I2C1 GPIO Configuration
-    PA9     ------> I2C1_SCL
-    PA10     ------> I2C1_SDA
-    */
-    GPIO_InitStruct.Pin = I2C_SCL_Pin|I2C_SDA_Pin;
-    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
-    GPIO_InitStruct.Pull = GPIO_PULLUP;
-    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
-    GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
-    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
-
-    /* I2C1 clock enable */
-    __HAL_RCC_I2C1_CLK_ENABLE();
-  /* USER CODE BEGIN I2C1_MspInit 1 */
-
-  /* USER CODE END I2C1_MspInit 1 */
-  }
-}
-
-void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
-{
-
-  if(i2cHandle->Instance==I2C1)
-  {
-  /* USER CODE BEGIN I2C1_MspDeInit 0 */
-
-  /* USER CODE END I2C1_MspDeInit 0 */
-    /* Peripheral clock disable */
-    __HAL_RCC_I2C1_CLK_DISABLE();
-
-    /**I2C1 GPIO Configuration
-    PA9     ------> I2C1_SCL
-    PA10     ------> I2C1_SDA
-    */
-    HAL_GPIO_DeInit(I2C_SCL_GPIO_Port, I2C_SCL_Pin);
-
-    HAL_GPIO_DeInit(I2C_SDA_GPIO_Port, I2C_SDA_Pin);
-
-  /* USER CODE BEGIN I2C1_MspDeInit 1 */
-
-  /* USER CODE END I2C1_MspDeInit 1 */
-  }
-}
-
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */
diff --git a/firmware/targets/f5/cube/f5.ioc b/firmware/targets/f5/cube/f5.ioc
index 40ba686a..429d620c 100644
--- a/firmware/targets/f5/cube/f5.ioc
+++ b/firmware/targets/f5/cube/f5.ioc
@@ -13,6 +13,7 @@ PC12.Locked=true
 TIM1.IPParameters=Channel-Output Compare1 CH1N,Channel-PWM Generation3 CH3N
 PC12.Signal=GPIO_Output
 PB14.GPIO_Label=iBTN
+I2C1.I2C_Rise_Time=0
 PC6.GPIO_Label=DISPLAY_DI
 VP_RTC_VS_RTC_Activate.Mode=RTC_Enabled
 RCC.RTCFreq_Value=32768
@@ -142,6 +143,7 @@ ADC1.Rank-0\#ChannelRegularConversion=1
 PA15.GPIOParameters=GPIO_Label
 Mcu.PinsNb=69
 PC11.Locked=true
+I2C1.I2C_Fall_Time=0
 ADC1.IPParameters=Rank-0\#ChannelRegularConversion,Channel-0\#ChannelRegularConversion,SamplingTime-0\#ChannelRegularConversion,OffsetNumber-0\#ChannelRegularConversion,NbrOfConversionFlag,master,EnableAnalogWatchDog1,ContinuousConvMode
 PC13.Locked=true
 ADC1.OffsetNumber-0\#ChannelRegularConversion=ADC_OFFSET_NONE
@@ -321,7 +323,7 @@ RCC.PLLSAI1RoutputFreq_Value=48000000
 PC5.Locked=true
 PA0.GPIO_Label=IR_RX
 PA12.GPIOParameters=GPIO_Speed
-ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL-true,2-SystemClock_Config-RCC-false-HAL-false,3-MX_ADC1_Init-ADC1-false-HAL-true,4-MX_I2C1_Init-I2C1-false-HAL-true,5-MX_RTC_Init-RTC-false-HAL-true,6-MX_SPI1_Init-SPI1-false-HAL-true,7-MX_SPI2_Init-SPI2-false-HAL-true,8-MX_USART1_UART_Init-USART1-false-HAL-true,9-MX_USB_Device_Init-USB_DEVICE-false-HAL-false,10-MX_TIM1_Init-TIM1-false-HAL-true,11-MX_TIM2_Init-TIM2-false-HAL-true,12-MX_TIM16_Init-TIM16-false-HAL-true,13-MX_COMP1_Init-COMP1-false-HAL-true,14-MX_RF_Init-RF-false-HAL-true,15-MX_PKA_Init-PKA-false-HAL-true,16-MX_RNG_Init-RNG-false-HAL-true,17-MX_AES1_Init-AES1-false-HAL-true,18-MX_AES2_Init-AES2-false-HAL-true,19-MX_CRC_Init-CRC-false-HAL-true,0-MX_HSEM_Init-HSEM-false-HAL-true
+ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL-true,2-SystemClock_Config-RCC-false-HAL-false,3-MX_ADC1_Init-ADC1-false-HAL-true,4-MX_I2C1_Init-I2C1-false-LL-true,5-MX_RTC_Init-RTC-false-HAL-true,6-MX_SPI1_Init-SPI1-false-HAL-true,7-MX_SPI2_Init-SPI2-false-HAL-true,8-MX_USART1_UART_Init-USART1-false-HAL-true,9-MX_USB_Device_Init-USB_DEVICE-false-HAL-false,10-MX_TIM1_Init-TIM1-false-HAL-true,11-MX_TIM2_Init-TIM2-false-HAL-true,12-MX_TIM16_Init-TIM16-false-HAL-true,13-MX_COMP1_Init-COMP1-false-HAL-true,14-MX_RF_Init-RF-false-HAL-true,15-MX_PKA_Init-PKA-false-HAL-true,16-MX_RNG_Init-RNG-false-HAL-true,17-MX_AES1_Init-AES1-false-HAL-true,18-MX_AES2_Init-AES2-false-HAL-true,19-MX_CRC_Init-CRC-false-HAL-true,0-MX_HSEM_Init-HSEM-false-HAL-true
 PC0.GPIOParameters=GPIO_Label
 PA9.GPIOParameters=GPIO_Speed,GPIO_Label
 PA2.GPIO_Speed=GPIO_SPEED_FREQ_LOW
@@ -349,7 +351,7 @@ Mcu.IP5=FREERTOS
 RCC.FCLKCortexFreq_Value=64000000
 USB_DEVICE.MANUFACTURER_STRING=Flipper
 Mcu.IP2=AES2
-I2C1.IPParameters=Timing,CustomTiming
+I2C1.IPParameters=Timing,CustomTiming,I2C_Rise_Time,I2C_Fall_Time
 Mcu.IP3=COMP1
 PA15.GPIO_Label=SD_CD
 PB4.GPIOParameters=GPIO_Label
diff --git a/firmware/targets/f5/target.mk b/firmware/targets/f5/target.mk
index 7c8b4bb6..7c063807 100644
--- a/firmware/targets/f5/target.mk
+++ b/firmware/targets/f5/target.mk
@@ -53,8 +53,6 @@ C_SOURCES		+= \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_flash_ex.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_gpio.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_hsem.c \
-	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_i2c.c \
-	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_i2c_ex.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_ipcc.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_pcd.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_pcd_ex.c \
@@ -74,6 +72,8 @@ C_SOURCES		+= \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_uart_ex.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_lptim.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_adc.c \
+	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_gpio.c \
+	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_i2c.c \
 	$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_ll_usb.c \
 	$(CUBE_DIR)/Middlewares/Third_Party/FreeRTOS/Source/croutine.c \
 	$(CUBE_DIR)/Middlewares/Third_Party/FreeRTOS/Source/event_groups.c \
@@ -97,6 +97,7 @@ ASM_SOURCES += $(MXPROJECT_DIR)/startup_stm32wb55xx_cm4.s
 
 # Common
 CFLAGS			+= \
+	-DUSE_FULL_LL_DRIVER \
 	-DUSE_HAL_DRIVER \
 	-DHAVE_FREERTOS \
 	-DDEBUG_UART=huart1