Merge pull request #2543 from Guozhanxin/f411

[bsp][stm32]完善 f4xx-nucleo spi、rtc支持

7 files changed, 344 insertions, 25 deletions

diff --git a/bsp/stm32/stm32f411-st-nucleo/.config b/bsp/stm32/stm32f411-st-nucleo/.config
index e8df7c72f9..61c05d6feb 100644
--- a/bsp/stm32/stm32f411-st-nucleo/.config
+++ b/bsp/stm32/stm32f411-st-nucleo/.config
@@ -356,7 +356,9 @@ CONFIG_BSP_USING_UART=y
 CONFIG_BSP_USING_UART2=y
 # CONFIG_BSP_USING_UART6 is not set
 # CONFIG_BSP_USING_I2C1 is not set
+# CONFIG_BSP_USING_SPI is not set
 # CONFIG_BSP_USING_PWM is not set
+# CONFIG_BSP_USING_ONCHIP_RTC is not set
 # CONFIG_BSP_USING_ON_CHIP_FLASH is not set
 
 #
diff --git a/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/CubeMX_Config.ioc b/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/CubeMX_Config.ioc
index f86fed8a1f..68d45640ce 100644
--- a/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/CubeMX_Config.ioc
+++ b/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/CubeMX_Config.ioc
@@ -2,34 +2,42 @@
 File.Version=6
 KeepUserPlacement=true
 Mcu.Family=STM32F4
-Mcu.IP0=NVIC
-Mcu.IP1=RCC
-Mcu.IP2=SYS
-Mcu.IP3=TIM3
-Mcu.IP4=USART2
-Mcu.IP5=USART6
-Mcu.IPNb=6
+Mcu.IP0=IWDG
+Mcu.IP1=NVIC
+Mcu.IP2=RCC
+Mcu.IP3=RTC
+Mcu.IP4=SPI1
+Mcu.IP5=SYS
+Mcu.IP6=TIM3
+Mcu.IP7=USART2
+Mcu.IP8=USART6
+Mcu.IPNb=9
 Mcu.Name=STM32F411R(C-E)Tx
 Mcu.Package=LQFP64
 Mcu.Pin0=PC13-ANTI_TAMP
 Mcu.Pin1=PC14-OSC32_IN
-Mcu.Pin10=PB1
-Mcu.Pin11=PA11
-Mcu.Pin12=PA12
-Mcu.Pin13=PA13
-Mcu.Pin14=PA14
-Mcu.Pin15=PB3
-Mcu.Pin16=VP_SYS_VS_Systick
-Mcu.Pin17=VP_TIM3_VS_ClockSourceINT
+Mcu.Pin10=PB0
+Mcu.Pin11=PB1
+Mcu.Pin12=PA11
+Mcu.Pin13=PA12
+Mcu.Pin14=PA13
+Mcu.Pin15=PA14
+Mcu.Pin16=PB3
+Mcu.Pin17=PB4
+Mcu.Pin18=PB5
+Mcu.Pin19=VP_IWDG_VS_IWDG
 Mcu.Pin2=PC15-OSC32_OUT
+Mcu.Pin20=VP_RTC_VS_RTC_Activate
+Mcu.Pin21=VP_SYS_VS_Systick
+Mcu.Pin22=VP_TIM3_VS_ClockSourceINT
 Mcu.Pin3=PH0 - OSC_IN
 Mcu.Pin4=PH1 - OSC_OUT
 Mcu.Pin5=PA2
 Mcu.Pin6=PA3
-Mcu.Pin7=PA6
-Mcu.Pin8=PA7
-Mcu.Pin9=PB0
-Mcu.PinsNb=18
+Mcu.Pin7=PA5
+Mcu.Pin8=PA6
+Mcu.Pin9=PA7
+Mcu.PinsNb=23
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32F411RETx
@@ -65,6 +73,8 @@ PA2.Mode=Asynchronous
 PA2.Signal=USART2_TX
 PA3.Mode=Asynchronous
 PA3.Signal=USART2_RX
+PA5.Mode=Full_Duplex_Master
+PA5.Signal=SPI1_SCK
 PA6.Signal=S_TIM3_CH1
 PA7.Signal=S_TIM3_CH2
 PB0.Signal=S_TIM3_CH3
@@ -73,6 +83,10 @@ PB3.GPIOParameters=GPIO_Label
 PB3.GPIO_Label=SWO
 PB3.Locked=true
 PB3.Signal=SYS_JTDO-SWO
+PB4.Mode=Full_Duplex_Master
+PB4.Signal=SPI1_MISO
+PB5.Mode=Full_Duplex_Master
+PB5.Signal=SPI1_MOSI
 PC13-ANTI_TAMP.GPIOParameters=GPIO_Label,GPIO_ModeDefaultEXTI
 PC13-ANTI_TAMP.GPIO_Label=B1 [Blue PushButton]
 PC13-ANTI_TAMP.GPIO_ModeDefaultEXTI=GPIO_MODE_IT_FALLING
@@ -125,7 +139,7 @@ ProjectManager.StackSize=0x400
 ProjectManager.TargetToolchain=MDK-ARM V5
 ProjectManager.ToolChainLocation=
 ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL-true,2-SystemClock_Config-RCC-false-HAL-false,3-MX_USART2_UART_Init-USART2-false-HAL-true,4-MX_TIM3_Init-TIM3-false-HAL-true,5-MX_USART6_UART_Init-USART6-false-HAL-true
+ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL-true,2-SystemClock_Config-RCC-false-HAL-false,3-MX_USART2_UART_Init-USART2-false-HAL-true,4-MX_TIM3_Init-TIM3-false-HAL-true,5-MX_USART6_UART_Init-USART6-false-HAL-true,6-MX_RTC_Init-RTC-false-HAL-true,7-MX_IWDG_Init-IWDG-false-HAL-true,8-MX_SPI1_Init-SPI1-false-HAL-true
 RCC.48MHZClocksFreq_Value=42000000
 RCC.AHBFreq_Value=84000000
 RCC.APB1CLKDivider=RCC_HCLK_DIV2
@@ -169,6 +183,11 @@ SH.S_TIM3_CH3.0=TIM3_CH3,PWM Generation3 CH3
 SH.S_TIM3_CH3.ConfNb=1
 SH.S_TIM3_CH4.0=TIM3_CH4,PWM Generation4 CH4
 SH.S_TIM3_CH4.ConfNb=1
+SPI1.CalculateBaudRate=42.0 MBits/s
+SPI1.Direction=SPI_DIRECTION_2LINES
+SPI1.IPParameters=VirtualType,Mode,Direction,CalculateBaudRate
+SPI1.Mode=SPI_MODE_MASTER
+SPI1.VirtualType=VM_MASTER
 TIM3.Channel-PWM\ Generation1\ CH1=TIM_CHANNEL_1
 TIM3.Channel-PWM\ Generation2\ CH2=TIM_CHANNEL_2
 TIM3.Channel-PWM\ Generation3\ CH3=TIM_CHANNEL_3
@@ -178,6 +197,10 @@ USART2.IPParameters=VirtualMode
 USART2.VirtualMode=VM_ASYNC
 USART6.IPParameters=VirtualMode
 USART6.VirtualMode=VM_ASYNC
+VP_IWDG_VS_IWDG.Mode=IWDG_Activate
+VP_IWDG_VS_IWDG.Signal=IWDG_VS_IWDG
+VP_RTC_VS_RTC_Activate.Mode=RTC_Enabled
+VP_RTC_VS_RTC_Activate.Signal=RTC_VS_RTC_Activate
 VP_SYS_VS_Systick.Mode=SysTick
 VP_SYS_VS_Systick.Signal=SYS_VS_Systick
 VP_TIM3_VS_ClockSourceINT.Mode=Internal
diff --git a/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/Inc/stm32f4xx_hal_conf.h b/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/Inc/stm32f4xx_hal_conf.h
index c297288600..a3ef6ecaa7 100644
--- a/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/Inc/stm32f4xx_hal_conf.h
+++ b/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/Inc/stm32f4xx_hal_conf.h
@@ -66,14 +66,14 @@
 /* #define HAL_HASH_MODULE_ENABLED   */
 /* #define HAL_I2C_MODULE_ENABLED   */
 /* #define HAL_I2S_MODULE_ENABLED   */
-/* #define HAL_IWDG_MODULE_ENABLED   */
+#define HAL_IWDG_MODULE_ENABLED
 /* #define HAL_LTDC_MODULE_ENABLED   */
 /* #define HAL_RNG_MODULE_ENABLED   */
-/* #define HAL_RTC_MODULE_ENABLED   */
+#define HAL_RTC_MODULE_ENABLED
 /* #define HAL_SAI_MODULE_ENABLED   */
 /* #define HAL_SD_MODULE_ENABLED   */
 /* #define HAL_MMC_MODULE_ENABLED   */
-/* #define HAL_SPI_MODULE_ENABLED   */
+#define HAL_SPI_MODULE_ENABLED
 #define HAL_TIM_MODULE_ENABLED
 #define HAL_UART_MODULE_ENABLED
 /* #define HAL_USART_MODULE_ENABLED   */
diff --git a/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/Src/main.c b/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/Src/main.c
index 261a100abd..5fcc4359e7 100644
--- a/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/Src/main.c
+++ b/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/Src/main.c
@@ -62,6 +62,12 @@
 /* USER CODE END PM */
 
 /* Private variables ---------------------------------------------------------*/
+IWDG_HandleTypeDef hiwdg;
+
+RTC_HandleTypeDef hrtc;
+
+SPI_HandleTypeDef hspi1;
+
 TIM_HandleTypeDef htim3;
 
 UART_HandleTypeDef huart2;
@@ -77,6 +83,9 @@ static void MX_GPIO_Init(void);
 static void MX_USART2_UART_Init(void);
 static void MX_TIM3_Init(void);
 static void MX_USART6_UART_Init(void);
+static void MX_RTC_Init(void);
+static void MX_IWDG_Init(void);
+static void MX_SPI1_Init(void);
 /* USER CODE BEGIN PFP */
 
 /* USER CODE END PFP */
@@ -117,6 +126,9 @@ int main(void)
   MX_USART2_UART_Init();
   MX_TIM3_Init();
   MX_USART6_UART_Init();
+  MX_RTC_Init();
+  MX_IWDG_Init();
+  MX_SPI1_Init();
   /* USER CODE BEGIN 2 */
 
   /* USER CODE END 2 */
@@ -140,6 +152,7 @@ void SystemClock_Config(void)
 {
   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
+  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
 
   /**Configure the main internal regulator output voltage 
   */
@@ -147,8 +160,9 @@ void SystemClock_Config(void)
   __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
   /**Initializes the CPU, AHB and APB busses clocks 
   */
-  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE;
   RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
+  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
   RCC_OscInitStruct.PLL.PLLM = 4;
@@ -172,6 +186,112 @@ void SystemClock_Config(void)
   {
     Error_Handler();
   }
+  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
+  PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
+  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
+  {
+    Error_Handler();
+  }
+}
+
+/**
+  * @brief IWDG Initialization Function
+  * @param None
+  * @retval None
+  */
+static void MX_IWDG_Init(void)
+{
+
+  /* USER CODE BEGIN IWDG_Init 0 */
+
+  /* USER CODE END IWDG_Init 0 */
+
+  /* USER CODE BEGIN IWDG_Init 1 */
+
+  /* USER CODE END IWDG_Init 1 */
+  hiwdg.Instance = IWDG;
+  hiwdg.Init.Prescaler = IWDG_PRESCALER_4;
+  hiwdg.Init.Reload = 4095;
+  if (HAL_IWDG_Init(&hiwdg) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN IWDG_Init 2 */
+
+  /* USER CODE END IWDG_Init 2 */
+
+}
+
+/**
+  * @brief RTC Initialization Function
+  * @param None
+  * @retval None
+  */
+static void MX_RTC_Init(void)
+{
+
+  /* USER CODE BEGIN RTC_Init 0 */
+
+  /* USER CODE END RTC_Init 0 */
+
+  /* USER CODE BEGIN RTC_Init 1 */
+
+  /* USER CODE END RTC_Init 1 */
+  /**Initialize RTC Only 
+  */
+  hrtc.Instance = RTC;
+  hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
+  hrtc.Init.AsynchPrediv = 127;
+  hrtc.Init.SynchPrediv = 255;
+  hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
+  hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
+  hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
+  if (HAL_RTC_Init(&hrtc) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN RTC_Init 2 */
+
+  /* USER CODE END RTC_Init 2 */
+
+}
+
+/**
+  * @brief SPI1 Initialization Function
+  * @param None
+  * @retval None
+  */
+static void MX_SPI1_Init(void)
+{
+
+  /* USER CODE BEGIN SPI1_Init 0 */
+
+  /* USER CODE END SPI1_Init 0 */
+
+  /* USER CODE BEGIN SPI1_Init 1 */
+
+  /* USER CODE END SPI1_Init 1 */
+  /* SPI1 parameter configuration*/
+  hspi1.Instance = SPI1;
+  hspi1.Init.Mode = SPI_MODE_MASTER;
+  hspi1.Init.Direction = SPI_DIRECTION_2LINES;
+  hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
+  hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
+  hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
+  hspi1.Init.NSS = SPI_NSS_SOFT;
+  hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
+  hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
+  hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
+  hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
+  hspi1.Init.CRCPolynomial = 10;
+  if (HAL_SPI_Init(&hspi1) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN SPI1_Init 2 */
+
+  /* USER CODE END SPI1_Init 2 */
+
 }
 
 /**
diff --git a/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/Src/stm32f4xx_hal_msp.c b/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/Src/stm32f4xx_hal_msp.c
index 0c869664cb..b2c91f0c47 100644
--- a/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/Src/stm32f4xx_hal_msp.c
+++ b/bsp/stm32/stm32f411-st-nucleo/board/CubeMX_Config/Src/stm32f4xx_hal_msp.c
@@ -102,6 +102,133 @@ void HAL_MspInit(void)
 }
 
 /**
+* @brief RTC MSP Initialization
+* This function configures the hardware resources used in this example
+* @param hrtc: RTC handle pointer
+* @retval None
+*/
+void HAL_RTC_MspInit(RTC_HandleTypeDef* hrtc)
+{
+
+  if(hrtc->Instance==RTC)
+  {
+  /* USER CODE BEGIN RTC_MspInit 0 */
+
+  /* USER CODE END RTC_MspInit 0 */
+    /* Peripheral clock enable */
+    __HAL_RCC_RTC_ENABLE();
+  /* USER CODE BEGIN RTC_MspInit 1 */
+
+  /* USER CODE END RTC_MspInit 1 */
+  }
+
+}
+
+/**
+* @brief RTC MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param hrtc: RTC handle pointer
+* @retval None
+*/
+
+void HAL_RTC_MspDeInit(RTC_HandleTypeDef* hrtc)
+{
+
+  if(hrtc->Instance==RTC)
+  {
+  /* USER CODE BEGIN RTC_MspDeInit 0 */
+
+  /* USER CODE END RTC_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_RTC_DISABLE();
+  /* USER CODE BEGIN RTC_MspDeInit 1 */
+
+  /* USER CODE END RTC_MspDeInit 1 */
+  }
+
+}
+
+/**
+* @brief SPI MSP Initialization
+* This function configures the hardware resources used in this example
+* @param hspi: SPI handle pointer
+* @retval None
+*/
+void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
+{
+
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(hspi->Instance==SPI1)
+  {
+  /* USER CODE BEGIN SPI1_MspInit 0 */
+
+  /* USER CODE END SPI1_MspInit 0 */
+    /* Peripheral clock enable */
+    __HAL_RCC_SPI1_CLK_ENABLE();
+  
+    __HAL_RCC_GPIOA_CLK_ENABLE();
+    __HAL_RCC_GPIOB_CLK_ENABLE();
+    /**SPI1 GPIO Configuration    
+    PA5     ------> SPI1_SCK
+    PB4     ------> SPI1_MISO
+    PB5     ------> SPI1_MOSI 
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_5;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+    GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+    GPIO_InitStruct.Pin = GPIO_PIN_4|GPIO_PIN_5;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+    GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
+    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+  /* USER CODE BEGIN SPI1_MspInit 1 */
+
+  /* USER CODE END SPI1_MspInit 1 */
+  }
+
+}
+
+/**
+* @brief SPI MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param hspi: SPI handle pointer
+* @retval None
+*/
+
+void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
+{
+
+  if(hspi->Instance==SPI1)
+  {
+  /* USER CODE BEGIN SPI1_MspDeInit 0 */
+
+  /* USER CODE END SPI1_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_SPI1_CLK_DISABLE();
+  
+    /**SPI1 GPIO Configuration    
+    PA5     ------> SPI1_SCK
+    PB4     ------> SPI1_MISO
+    PB5     ------> SPI1_MOSI 
+    */
+    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_5);
+
+    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_4|GPIO_PIN_5);
+
+  /* USER CODE BEGIN SPI1_MspDeInit 1 */
+
+  /* USER CODE END SPI1_MspDeInit 1 */
+  }
+
+}
+
+/**
 * @brief TIM_Base MSP Initialization
 * This function configures the hardware resources used in this example
 * @param htim_base: TIM_Base handle pointer
diff --git a/bsp/stm32/stm32f411-st-nucleo/board/Kconfig b/bsp/stm32/stm32f411-st-nucleo/board/Kconfig
index 737f4511ac..92982f2158 100644
--- a/bsp/stm32/stm32f411-st-nucleo/board/Kconfig
+++ b/bsp/stm32/stm32f411-st-nucleo/board/Kconfig
@@ -58,6 +58,27 @@ menu "On-chip Peripheral Drivers"
                 default 25
         endif
 
+    menuconfig BSP_USING_SPI
+        bool "Enable SPI BUS"
+        default n
+        select RT_USING_SPI
+        if BSP_USING_SPI
+            config BSP_USING_SPI1
+                bool "Enable SPI1 BUS"
+                default n
+
+            config BSP_SPI1_TX_USING_DMA
+                bool "Enable SPI1 TX DMA"
+                depends on BSP_USING_SPI1
+                default n
+                
+            config BSP_SPI1_RX_USING_DMA
+                bool "Enable SPI1 RX DMA"
+                depends on BSP_USING_SPI1
+                select BSP_SPI1_TX_USING_DMA
+                default n
+        endif
+
     menuconfig BSP_USING_PWM
         bool "Enable pwm"
         default n
@@ -85,6 +106,24 @@ menu "On-chip Peripheral Drivers"
             endif
         endif
 
+    menuconfig BSP_USING_ONCHIP_RTC
+        bool "Enable RTC"
+        select RT_USING_RTC
+        select RT_USING_LIBC
+        default n
+        if BSP_USING_ONCHIP_RTC
+            choice
+                prompt "Select clock source"
+                default BSP_RTC_USING_LSE
+
+                config BSP_RTC_USING_LSE
+                    bool "RTC USING LSE"
+
+                config BSP_RTC_USING_LSI
+                    bool "RTC USING LSI"
+            endchoice
+        endif
+
     config BSP_USING_ON_CHIP_FLASH
         bool "Enable on-chip FLASH"
         default n
diff --git a/bsp/stm32/stm32f411-st-nucleo/board/board.c b/bsp/stm32/stm32f411-st-nucleo/board/board.c
index 20fb37099c..e9e6ffb5e7 100644
--- a/bsp/stm32/stm32f411-st-nucleo/board/board.c
+++ b/bsp/stm32/stm32f411-st-nucleo/board/board.c
@@ -14,6 +14,7 @@ void SystemClock_Config(void)
 {
   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
+  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
 
   /**Configure the main internal regulator output voltage 
   */
@@ -21,8 +22,9 @@ void SystemClock_Config(void)
   __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
   /**Initializes the CPU, AHB and APB busses clocks 
   */
-  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE;
   RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
+  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
   RCC_OscInitStruct.PLL.PLLM = 4;
@@ -46,4 +48,10 @@ void SystemClock_Config(void)
   {
     Error_Handler();
   }
+  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
+  PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
+  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
+  {
+    Error_Handler();
+  }
 }