Remove trailing whitespace and DOS line endings.

7 files changed, 204 insertions, 204 deletions

diff --git a/src/entropy/stm32f4xx_hal_msp.c b/src/entropy/stm32f4xx_hal_msp.c
index cf59a07..fc27e04 100644
--- a/src/entropy/stm32f4xx_hal_msp.c
+++ b/src/entropy/stm32f4xx_hal_msp.c
@@ -1,97 +1,97 @@
-#include "stm_init.h"

-#include "stm32f4xx_hal.h"

-

-static void Error_Handler(void);

-extern void HAL_DMA_XferCpltCallback(DMA_HandleTypeDef *hdma);

-

-void HAL_TIM_IC_MspInit(TIM_HandleTypeDef* htim)

-{

-  if (htim->Instance == TIM2) {

-    /* Configure DMA input capturing.

-     *

-     * Amplified avalanche noise is present at pin PA1,

-     * which has Alternate Function TIM2_CH2.

-     *

-     * TIM2_CH2 is DMA1 stream 6, channel 3 according to Table 28

-     * (DMA1 request mapping) in the reference manual (RM0368).

-     */

-    __DMA1_CLK_ENABLE();

-    __TIM2_CLK_ENABLE();

-    __GPIOA_CLK_ENABLE();

-

-    hdma_tim.Instance = DMA1_Stream6;

-

-    hdma_tim.Init.Channel             = DMA_CHANNEL_3;

-    hdma_tim.Init.Direction           = DMA_PERIPH_TO_MEMORY;

-    hdma_tim.Init.PeriphInc           = DMA_PINC_DISABLE;

-    hdma_tim.Init.MemInc              = DMA_MINC_ENABLE;

-    hdma_tim.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;

-    hdma_tim.Init.MemDataAlignment    = DMA_MDATAALIGN_WORD;

-    hdma_tim.Init.Mode                = DMA_NORMAL;

-    hdma_tim.Init.Priority            = DMA_PRIORITY_HIGH;

-    hdma_tim.Init.FIFOMode            = DMA_FIFOMODE_DISABLE;

-    hdma_tim.Init.FIFOThreshold       = DMA_FIFO_THRESHOLD_FULL;

-    hdma_tim.Init.MemBurst            = DMA_MBURST_SINGLE;

-    hdma_tim.Init.PeriphBurst         = DMA_PBURST_SINGLE;

-

-    /* Link hdma_tim to hdma[2] (channel3) */

-    __HAL_LINKDMA(htim, hdma[TIM_DMA_ID_CC2], hdma_tim);

-

-    /* Initialize TIMx DMA handle */

-    if (HAL_DMA_Init(&hdma_tim) != HAL_OK) {

-      Error_Handler();

-    }

-  }

-}

-

-void HAL_UART_MspInit(UART_HandleTypeDef* huart)

-{

-  GPIO_InitTypeDef GPIO_InitStruct;

-

-  if (huart->Instance == USART1) {

-    /* Peripheral clock enable */

-    __USART1_CLK_ENABLE();

-

-    /**USART1 GPIO Configuration

-    PA9     ------> USART1_TX

-    PA10    ------> USART1_RX

-    */

-    GPIO_InitStruct.Pin = GPIO_PIN_9 | GPIO_PIN_10;

-    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

-    GPIO_InitStruct.Pull = GPIO_PULLUP;

-    GPIO_InitStruct.Speed = GPIO_SPEED_FAST;

-    GPIO_InitStruct.Alternate = GPIO_AF7_USART1;

-    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

-

-    /* NVIC for interrupt mode */

-    HAL_NVIC_SetPriority(USART1_IRQn, 0, 1);

-    HAL_NVIC_EnableIRQ(USART1_IRQn);

-  }

-}

-

-void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)

-{

-  if (huart->Instance == USART1) {

-    /* Peripheral clock disable */

-    __USART1_CLK_DISABLE();

-

-    /**USART1 GPIO Configuration

-    PA9     ------> USART1_TX

-    PA10    ------> USART1_RX

-    */

-    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9 | GPIO_PIN_10);

-  }

-}

-

-/**

-  * @brief  This function is executed in case of error occurrence.

-  * @param  None

-  * @retval None

-  */

-static void Error_Handler(void)

-{

-  /* Turn on RED LED and then loop indefinitely */

-  HAL_GPIO_WritePin(LED_PORT, LED_RED, GPIO_PIN_SET);

-

-  while (1) { ; }

-}

+#include "stm_init.h"
+#include "stm32f4xx_hal.h"
+
+static void Error_Handler(void);
+extern void HAL_DMA_XferCpltCallback(DMA_HandleTypeDef *hdma);
+
+void HAL_TIM_IC_MspInit(TIM_HandleTypeDef* htim)
+{
+  if (htim->Instance == TIM2) {
+    /* Configure DMA input capturing.
+     *
+     * Amplified avalanche noise is present at pin PA1,
+     * which has Alternate Function TIM2_CH2.
+     *
+     * TIM2_CH2 is DMA1 stream 6, channel 3 according to Table 28
+     * (DMA1 request mapping) in the reference manual (RM0368).
+     */
+    __DMA1_CLK_ENABLE();
+    __TIM2_CLK_ENABLE();
+    __GPIOA_CLK_ENABLE();
+
+    hdma_tim.Instance = DMA1_Stream6;
+
+    hdma_tim.Init.Channel             = DMA_CHANNEL_3;
+    hdma_tim.Init.Direction           = DMA_PERIPH_TO_MEMORY;
+    hdma_tim.Init.PeriphInc           = DMA_PINC_DISABLE;
+    hdma_tim.Init.MemInc              = DMA_MINC_ENABLE;
+    hdma_tim.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
+    hdma_tim.Init.MemDataAlignment    = DMA_MDATAALIGN_WORD;
+    hdma_tim.Init.Mode                = DMA_NORMAL;
+    hdma_tim.Init.Priority            = DMA_PRIORITY_HIGH;
+    hdma_tim.Init.FIFOMode            = DMA_FIFOMODE_DISABLE;
+    hdma_tim.Init.FIFOThreshold       = DMA_FIFO_THRESHOLD_FULL;
+    hdma_tim.Init.MemBurst            = DMA_MBURST_SINGLE;
+    hdma_tim.Init.PeriphBurst         = DMA_PBURST_SINGLE;
+
+    /* Link hdma_tim to hdma[2] (channel3) */
+    __HAL_LINKDMA(htim, hdma[TIM_DMA_ID_CC2], hdma_tim);
+
+    /* Initialize TIMx DMA handle */
+    if (HAL_DMA_Init(&hdma_tim) != HAL_OK) {
+      Error_Handler();
+    }
+  }
+}
+
+void HAL_UART_MspInit(UART_HandleTypeDef* huart)
+{
+  GPIO_InitTypeDef GPIO_InitStruct;
+
+  if (huart->Instance == USART1) {
+    /* Peripheral clock enable */
+    __USART1_CLK_ENABLE();
+
+    /**USART1 GPIO Configuration
+    PA9     ------> USART1_TX
+    PA10    ------> USART1_RX
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_9 | GPIO_PIN_10;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_PULLUP;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
+    GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+    /* NVIC for interrupt mode */
+    HAL_NVIC_SetPriority(USART1_IRQn, 0, 1);
+    HAL_NVIC_EnableIRQ(USART1_IRQn);
+  }
+}
+
+void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)
+{
+  if (huart->Instance == USART1) {
+    /* Peripheral clock disable */
+    __USART1_CLK_DISABLE();
+
+    /**USART1 GPIO Configuration
+    PA9     ------> USART1_TX
+    PA10    ------> USART1_RX
+    */
+    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9 | GPIO_PIN_10);
+  }
+}
+
+/**
+  * @brief  This function is executed in case of error occurrence.
+  * @param  None
+  * @retval None
+  */
+static void Error_Handler(void)
+{
+  /* Turn on RED LED and then loop indefinitely */
+  HAL_GPIO_WritePin(LED_PORT, LED_RED, GPIO_PIN_SET);
+
+  while (1) { ; }
+}
diff --git a/src/entropy/stm32f4xx_it.c b/src/entropy/stm32f4xx_it.c
index 17a7cf9..231b4fc 100644
--- a/src/entropy/stm32f4xx_it.c
+++ b/src/entropy/stm32f4xx_it.c
@@ -1,11 +1,11 @@
 /**
   ******************************************************************************
-  * @file    GPIO/GPIO_IOToggle/Src/stm32f4xx_it.c 
+  * @file    GPIO/GPIO_IOToggle/Src/stm32f4xx_it.c
   * @author  MCD Application Team
   * @version V1.0.1
   * @date    26-February-2014
   * @brief   Main Interrupt Service Routines.
-  *          This file provides template for all exceptions handler and 
+  *          This file provides template for all exceptions handler and
   *          peripherals interrupt service routine.
   ******************************************************************************
   * @attention
@@ -191,7 +191,7 @@ void DMA1_Stream6_IRQHandler(void)
 
 /**
   * @}
-  */ 
+  */
 
 /**
   * @}
diff --git a/src/led-test/stm32f4xx_it.c b/src/led-test/stm32f4xx_it.c
index e387408..42d8713 100644
--- a/src/led-test/stm32f4xx_it.c
+++ b/src/led-test/stm32f4xx_it.c
@@ -1,11 +1,11 @@
 /**
   ******************************************************************************
-  * @file    GPIO/GPIO_IOToggle/Src/stm32f4xx_it.c 
+  * @file    GPIO/GPIO_IOToggle/Src/stm32f4xx_it.c
   * @author  MCD Application Team
   * @version V1.0.1
   * @date    26-February-2014
   * @brief   Main Interrupt Service Routines.
-  *          This file provides template for all exceptions handler and 
+  *          This file provides template for all exceptions handler and
   *          peripherals interrupt service routine.
   ******************************************************************************
   * @attention
@@ -180,7 +180,7 @@ void SysTick_Handler(void)
 
 /**
   * @}
-  */ 
+  */
 
 /**
   * @}
diff --git a/src/led-test/system_stm32f4xx.c b/src/led-test/system_stm32f4xx.c
index 3068a90..35f79ba 100644
--- a/src/led-test/system_stm32f4xx.c
+++ b/src/led-test/system_stm32f4xx.c
@@ -6,16 +6,16 @@
   * @date    26-February-2014
   * @brief   CMSIS Cortex-M4 Device Peripheral Access Layer System Source File.
   *
-  *   This file provides two functions and one global variable to be called from 
+  *   This file provides two functions and one global variable to be called from
   *   user application:
-  *      - SystemInit(): This function is called at startup just after reset and 
+  *      - SystemInit(): This function is called at startup just after reset and
   *                      before branch to main program. This call is made inside
   *                      the "startup_stm32f4xx.s" file.
   *
   *      - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
-  *                                  by the user application to setup the SysTick 
+  *                                  by the user application to setup the SysTick
   *                                  timer or configure other parameters.
-  *                                     
+  *
   *      - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
   *                                 be called whenever the core clock is changed
   *                                 during program execution.
@@ -57,8 +57,8 @@
 
 /** @addtogroup stm32f4xx_system
   * @{
-  */  
-  
+  */
+
 /** @addtogroup STM32F4xx_System_Private_Includes
   * @{
   */
@@ -86,7 +86,7 @@
 /*!< Uncomment the following line if you need to relocate your vector Table in
      Internal SRAM. */
 /* #define VECT_TAB_SRAM */
-#define VECT_TAB_OFFSET  0x00 /*!< Vector Table base offset field. 
+#define VECT_TAB_OFFSET  0x00 /*!< Vector Table base offset field.
                                    This value must be a multiple of 0x200. */
 /******************************************************************************/
 
@@ -108,7 +108,7 @@
   /* This variable is updated in three ways:
       1) by calling CMSIS function SystemCoreClockUpdate()
       2) by calling HAL API function HAL_RCC_GetHCLKFreq()
-      3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency 
+      3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
          Note: If you use this function to configure the system clock; then there
                is no need to call the 2 first functions listed above, since SystemCoreClock
                variable is updated automatically.
@@ -134,7 +134,7 @@
 
 /**
   * @brief  Setup the microcontroller system
-  *         Initialize the FPU setting, vector table location and External memory 
+  *         Initialize the FPU setting, vector table location and External memory
   *         configuration.
   * @param  None
   * @retval None
@@ -177,41 +177,41 @@ void SystemInit(void)
   *         The SystemCoreClock variable contains the core clock (HCLK), it can
   *         be used by the user application to setup the SysTick timer or configure
   *         other parameters.
-  *           
+  *
   * @note   Each time the core clock (HCLK) changes, this function must be called
   *         to update SystemCoreClock variable value. Otherwise, any configuration
-  *         based on this variable will be incorrect.         
-  *     
-  * @note   - The system frequency computed by this function is not the real 
-  *           frequency in the chip. It is calculated based on the predefined 
+  *         based on this variable will be incorrect.
+  *
+  * @note   - The system frequency computed by this function is not the real
+  *           frequency in the chip. It is calculated based on the predefined
   *           constant and the selected clock source:
-  *             
+  *
   *           - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
-  *                                              
+  *
   *           - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
-  *                          
-  *           - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**) 
+  *
+  *           - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
   *             or HSI_VALUE(*) multiplied/divided by the PLL factors.
-  *         
+  *
   *         (*) HSI_VALUE is a constant defined in stm32f4xx_hal_conf.h file (default value
   *             16 MHz) but the real value may vary depending on the variations
-  *             in voltage and temperature.   
-  *    
+  *             in voltage and temperature.
+  *
   *         (**) HSE_VALUE is a constant defined in stm32f4xx_hal_conf.h file (its value
   *              depends on the application requirements), user has to ensure that HSE_VALUE
   *              is same as the real frequency of the crystal used. Otherwise, this function
   *              may have wrong result.
-  *                
+  *
   *         - The result of this function could be not correct when using fractional
   *           value for HSE crystal.
-  *     
+  *
   * @param  None
   * @retval None
   */
 void SystemCoreClockUpdate(void)
 {
   uint32_t tmp = 0, pllvco = 0, pllp = 2, pllsource = 0, pllm = 2;
-  
+
   /* Get SYSCLK source -------------------------------------------------------*/
   tmp = RCC->CFGR & RCC_CFGR_SWS;
 
@@ -227,10 +227,10 @@ void SystemCoreClockUpdate(void)
 
       /* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL_M) * PLL_N
          SYSCLK = PLL_VCO / PLL_P
-         */    
+         */
       pllsource = (RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) >> 22;
       pllm = RCC->PLLCFGR & RCC_PLLCFGR_PLLM;
-      
+
       if (pllsource != 0)
       {
         /* HSE used as PLL clock source */
@@ -263,8 +263,8 @@ void SystemCoreClockUpdate(void)
 /**
   * @}
   */
-  
+
 /**
   * @}
-  */    
+  */
 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/src/uart-test/stm32f4xx_hal_msp.c b/src/uart-test/stm32f4xx_hal_msp.c
index 2b1da7e..7cee9ce 100644
--- a/src/uart-test/stm32f4xx_hal_msp.c
+++ b/src/uart-test/stm32f4xx_hal_msp.c
@@ -1,42 +1,42 @@
-/*

- * Init/de-init USART1.

- *

- * Pins used:

- *

- *   PA9:  USART1_TX

- *   PA10: USART1_RX

- */

-

-#include "stm32f4xx_hal.h"

-

-

-void HAL_UART_MspInit(UART_HandleTypeDef* huart)

-{

-  GPIO_InitTypeDef GPIO_InitStruct;

-

-  if (huart->Instance == USART1) {

-    /* Peripheral clock enable */

-    __USART1_CLK_ENABLE();

-    GPIO_InitStruct.Pin = GPIO_PIN_9 | GPIO_PIN_10;

-    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

-    GPIO_InitStruct.Pull = GPIO_PULLUP;

-    GPIO_InitStruct.Speed = GPIO_SPEED_FAST;

-    GPIO_InitStruct.Alternate = GPIO_AF7_USART1;

-    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

-

-    /* NVIC for interrupt mode */

-    HAL_NVIC_SetPriority(USART1_IRQn, 0, 1);

-    HAL_NVIC_EnableIRQ(USART1_IRQn);

-  }

-

-}

-

-void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)

-{

-

-  if (huart->Instance == USART1) {

-    __USART1_CLK_DISABLE();

-    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9 | GPIO_PIN_10);

-  }

-

-}

+/*
+ * Init/de-init USART1.
+ *
+ * Pins used:
+ *
+ *   PA9:  USART1_TX
+ *   PA10: USART1_RX
+ */
+
+#include "stm32f4xx_hal.h"
+
+
+void HAL_UART_MspInit(UART_HandleTypeDef* huart)
+{
+  GPIO_InitTypeDef GPIO_InitStruct;
+
+  if (huart->Instance == USART1) {
+    /* Peripheral clock enable */
+    __USART1_CLK_ENABLE();
+    GPIO_InitStruct.Pin = GPIO_PIN_9 | GPIO_PIN_10;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_PULLUP;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
+    GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
+    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+    /* NVIC for interrupt mode */
+    HAL_NVIC_SetPriority(USART1_IRQn, 0, 1);
+    HAL_NVIC_EnableIRQ(USART1_IRQn);
+  }
+
+}
+
+void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)
+{
+
+  if (huart->Instance == USART1) {
+    __USART1_CLK_DISABLE();
+    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9 | GPIO_PIN_10);
+  }
+
+}
diff --git a/src/uart-test/stm32f4xx_it.c b/src/uart-test/stm32f4xx_it.c
index 4dcf0e9..4e5bd89 100644
--- a/src/uart-test/stm32f4xx_it.c
+++ b/src/uart-test/stm32f4xx_it.c
@@ -1,11 +1,11 @@
 /**
   ******************************************************************************
-  * @file    GPIO/GPIO_IOToggle/Src/stm32f4xx_it.c 
+  * @file    GPIO/GPIO_IOToggle/Src/stm32f4xx_it.c
   * @author  MCD Application Team
   * @version V1.0.1
   * @date    26-February-2014
   * @brief   Main Interrupt Service Routines.
-  *          This file provides template for all exceptions handler and 
+  *          This file provides template for all exceptions handler and
   *          peripherals interrupt service routine.
   ******************************************************************************
   * @attention
@@ -192,7 +192,7 @@ void USART1_IRQHandler(void)
 
 /**
   * @}
-  */ 
+  */
 
 /**
   * @}
diff --git a/src/uart-test/system_stm32f4xx.c b/src/uart-test/system_stm32f4xx.c
index 3068a90..35f79ba 100644
--- a/src/uart-test/system_stm32f4xx.c
+++ b/src/uart-test/system_stm32f4xx.c
@@ -6,16 +6,16 @@
   * @date    26-February-2014
   * @brief   CMSIS Cortex-M4 Device Peripheral Access Layer System Source File.
   *
-  *   This file provides two functions and one global variable to be called from 
+  *   This file provides two functions and one global variable to be called from
   *   user application:
-  *      - SystemInit(): This function is called at startup just after reset and 
+  *      - SystemInit(): This function is called at startup just after reset and
   *                      before branch to main program. This call is made inside
   *                      the "startup_stm32f4xx.s" file.
   *
   *      - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
-  *                                  by the user application to setup the SysTick 
+  *                                  by the user application to setup the SysTick
   *                                  timer or configure other parameters.
-  *                                     
+  *
   *      - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
   *                                 be called whenever the core clock is changed
   *                                 during program execution.
@@ -57,8 +57,8 @@
 
 /** @addtogroup stm32f4xx_system
   * @{
-  */  
-  
+  */
+
 /** @addtogroup STM32F4xx_System_Private_Includes
   * @{
   */
@@ -86,7 +86,7 @@
 /*!< Uncomment the following line if you need to relocate your vector Table in
      Internal SRAM. */
 /* #define VECT_TAB_SRAM */
-#define VECT_TAB_OFFSET  0x00 /*!< Vector Table base offset field. 
+#define VECT_TAB_OFFSET  0x00 /*!< Vector Table base offset field.
                                    This value must be a multiple of 0x200. */
 /******************************************************************************/
 
@@ -108,7 +108,7 @@
   /* This variable is updated in three ways:
       1) by calling CMSIS function SystemCoreClockUpdate()
       2) by calling HAL API function HAL_RCC_GetHCLKFreq()
-      3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency 
+      3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
          Note: If you use this function to configure the system clock; then there
                is no need to call the 2 first functions listed above, since SystemCoreClock
                variable is updated automatically.
@@ -134,7 +134,7 @@
 
 /**
   * @brief  Setup the microcontroller system
-  *         Initialize the FPU setting, vector table location and External memory 
+  *         Initialize the FPU setting, vector table location and External memory
   *         configuration.
   * @param  None
   * @retval None
@@ -177,41 +177,41 @@ void SystemInit(void)
   *         The SystemCoreClock variable contains the core clock (HCLK), it can
   *         be used by the user application to setup the SysTick timer or configure
   *         other parameters.
-  *           
+  *
   * @note   Each time the core clock (HCLK) changes, this function must be called
   *         to update SystemCoreClock variable value. Otherwise, any configuration
-  *         based on this variable will be incorrect.         
-  *     
-  * @note   - The system frequency computed by this function is not the real 
-  *           frequency in the chip. It is calculated based on the predefined 
+  *         based on this variable will be incorrect.
+  *
+  * @note   - The system frequency computed by this function is not the real
+  *           frequency in the chip. It is calculated based on the predefined
   *           constant and the selected clock source:
-  *             
+  *
   *           - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
-  *                                              
+  *
   *           - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
-  *                          
-  *           - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**) 
+  *
+  *           - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
   *             or HSI_VALUE(*) multiplied/divided by the PLL factors.
-  *         
+  *
   *         (*) HSI_VALUE is a constant defined in stm32f4xx_hal_conf.h file (default value
   *             16 MHz) but the real value may vary depending on the variations
-  *             in voltage and temperature.   
-  *    
+  *             in voltage and temperature.
+  *
   *         (**) HSE_VALUE is a constant defined in stm32f4xx_hal_conf.h file (its value
   *              depends on the application requirements), user has to ensure that HSE_VALUE
   *              is same as the real frequency of the crystal used. Otherwise, this function
   *              may have wrong result.
-  *                
+  *
   *         - The result of this function could be not correct when using fractional
   *           value for HSE crystal.
-  *     
+  *
   * @param  None
   * @retval None
   */
 void SystemCoreClockUpdate(void)
 {
   uint32_t tmp = 0, pllvco = 0, pllp = 2, pllsource = 0, pllm = 2;
-  
+
   /* Get SYSCLK source -------------------------------------------------------*/
   tmp = RCC->CFGR & RCC_CFGR_SWS;
 
@@ -227,10 +227,10 @@ void SystemCoreClockUpdate(void)
 
       /* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL_M) * PLL_N
          SYSCLK = PLL_VCO / PLL_P
-         */    
+         */
       pllsource = (RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) >> 22;
       pllm = RCC->PLLCFGR & RCC_PLLCFGR_PLLM;
-      
+
       if (pllsource != 0)
       {
         /* HSE used as PLL clock source */
@@ -263,8 +263,8 @@ void SystemCoreClockUpdate(void)
 /**
   * @}
   */
-  
+
 /**
   * @}
-  */    
+  */
 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/