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/* ... */
#include "main.h"
/* ... */
/* ... */
Includes
IWDG_HandleTypeDef IwdgHandle;
TIM_HandleTypeDef TimInputCaptureHandle;
RCC_ClkInitTypeDef RCC_ClockFreq;
static __IO uint32_t uwLsiFreq = 0;
__IO uint32_t uwCaptureNumber = 0;
__IO uint32_t uwPeriodValue = 0;
__IO uint32_t uwMeasurementDone = 0;
Private variables
static void SystemClock_Config(void);
static void Error_Handler(void);
static uint32_t GetLSIFrequency(void);
Private function prototypes
/* ... */
int main(void)
{
/* ... */
HAL_Init();
SystemClock_Config();
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
BSP_PB_Init(BUTTON_TAMPER, BUTTON_MODE_EXTI);
if(__HAL_RCC_GET_FLAG(RCC_FLAG_IWDGRST) != RESET)
{
BSP_LED_On(LED1);
__HAL_RCC_CLEAR_RESET_FLAGS();
}if (__HAL_RCC_GET_FLAG(RCC_FLAG_IWDGRST) != RESET) { ... }
else
{
BSP_LED_Off(LED1);
}else { ... }
uwLsiFreq = GetLSIFrequency();
/* ... */
IwdgHandle.Instance = IWDG;
IwdgHandle.Init.Prescaler = IWDG_PRESCALER_32;
IwdgHandle.Init.Reload = uwLsiFreq/128;
if(HAL_IWDG_Init(&IwdgHandle) != HAL_OK)
{
Error_Handler();
}if (HAL_IWDG_Init(&IwdgHandle) != HAL_OK) { ... }
while (1)
{
BSP_LED_Toggle(LED2);
HAL_Delay(240);
if(HAL_IWDG_Refresh(&IwdgHandle) != HAL_OK)
{
Error_Handler();
}if (HAL_IWDG_Refresh(&IwdgHandle) != HAL_OK) { ... }
}while (1) { ... }
}{ ... }
/* ... */
static uint32_t GetLSIFrequency(void)
{
uint32_t pclk1 = 0;
TIM_IC_InitTypeDef timinputconfig;
__HAL_RCC_LSI_ENABLE();
while (__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) == RESET)
{
}while (__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) == RESET) { ... }
TimInputCaptureHandle.Instance = TIM5;
/* ... */
TimInputCaptureHandle.Init.Prescaler = 0;
TimInputCaptureHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
TimInputCaptureHandle.Init.Period = 0xFFFF;
TimInputCaptureHandle.Init.ClockDivision = 0;
TimInputCaptureHandle.Init.RepetitionCounter = 0;
if(HAL_TIM_IC_Init(&TimInputCaptureHandle) != HAL_OK)
{
Error_Handler();
}if (HAL_TIM_IC_Init(&TimInputCaptureHandle) != HAL_OK) { ... }
HAL_TIMEx_RemapConfig(&TimInputCaptureHandle, TIM_TIM5_LSI);
timinputconfig.ICPolarity = TIM_ICPOLARITY_RISING;
timinputconfig.ICSelection = TIM_ICSELECTION_DIRECTTI;
timinputconfig.ICPrescaler = TIM_ICPSC_DIV8;
timinputconfig.ICFilter = 0;
if(HAL_TIM_IC_ConfigChannel(&TimInputCaptureHandle, &timinputconfig, TIM_CHANNEL_4) != HAL_OK)
{
Error_Handler();
}if (HAL_TIM_IC_ConfigChannel(&TimInputCaptureHandle, &timinputconfig, TIM_CHANNEL_4) != HAL_OK) { ... }
TimInputCaptureHandle.Instance->SR = 0;
if(HAL_TIM_IC_Start_IT(&TimInputCaptureHandle, TIM_CHANNEL_4) != HAL_OK)
{
Error_Handler();
}if (HAL_TIM_IC_Start_IT(&TimInputCaptureHandle, TIM_CHANNEL_4) != HAL_OK) { ... }
/* ... */
while(uwMeasurementDone == 0)
{
}while (uwMeasurementDone == 0) { ... }
uwCaptureNumber = 0;
HAL_TIM_IC_DeInit(&TimInputCaptureHandle);
pclk1 = HAL_RCC_GetPCLK1Freq();
if((RCC->CFGR & RCC_CFGR_PPRE1) == 0)
{
return ((pclk1 * 8) / uwPeriodValue);
}if ((RCC->CFGR & RCC_CFGR_PPRE1) == 0) { ... }
else
{
return (((2 * pclk1) * 8) / uwPeriodValue);
}else { ... }
}{ ... }
/* ... */
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
__HAL_RCC_PWR_CLK_ENABLE();
/* ... */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
/* ... */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
if (HAL_GetREVID() >= 0x1001)
{
__HAL_FLASH_PREFETCH_BUFFER_ENABLE();
}if (HAL_GetREVID() >= 0x1001) { ... }
}{ ... }
/* ... */
static void Error_Handler(void)
{
BSP_LED_On(LED3);
while(1)
{
}while (1) { ... }
}{ ... }
#ifdef USE_FULL_ASSERT
/* ... */
void assert_failed(uint8_t* file, uint32_t line)
{
/* ... */
while (1)
{
}while (1) { ... }
}assert_failed (uint8_t* file, uint32_t line) { ... }
/* ... */#endif
/* ... */
/* ... */