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/* ... */
#include "main.h"
/* ... */
/* ... */
Includes
TIM_HandleTypeDef TimHandle;
TIM_IC_InitTypeDef sICConfig;
uint32_t uwIC2Value1 = 0;
uint32_t uwIC2Value2 = 0;
uint32_t uwDiffCapture = 0;
uint16_t uhCaptureIndex = 0;
uint32_t uwFrequency = 0;
Private variables
static void SystemClock_Config(void);
static void Error_Handler(void);
Private function prototypes
/* ... */
int main(void)
{
/* ... */
HAL_Init();
SystemClock_Config();
BSP_LED_Init(LED3);
/* ... */
TimHandle.Instance = TIMx;
/* ... */
TimHandle.Init.Period = 0xFFFF;
TimHandle.Init.Prescaler = 0;
TimHandle.Init.ClockDivision = 0;
TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP;
TimHandle.Init.RepetitionCounter = 0;
TimHandle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if(HAL_TIM_IC_Init(&TimHandle) != HAL_OK)
{
Error_Handler();
}if (HAL_TIM_IC_Init(&TimHandle) != HAL_OK) { ... }
sICConfig.ICPolarity = TIM_ICPOLARITY_RISING;
sICConfig.ICSelection = TIM_ICSELECTION_DIRECTTI;
sICConfig.ICPrescaler = TIM_ICPSC_DIV1;
sICConfig.ICFilter = 0;
if(HAL_TIM_IC_ConfigChannel(&TimHandle, &sICConfig, TIM_CHANNEL_2) != HAL_OK)
{
Error_Handler();
}if (HAL_TIM_IC_ConfigChannel(&TimHandle, &sICConfig, TIM_CHANNEL_2) != HAL_OK) { ... }
if(HAL_TIM_IC_Start_IT(&TimHandle, TIM_CHANNEL_2) != HAL_OK)
{
Error_Handler();
}if (HAL_TIM_IC_Start_IT(&TimHandle, TIM_CHANNEL_2) != HAL_OK) { ... }
while (1)
{
}while (1) { ... }
}{ ... }
/* ... */
void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
{
if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2)
{
if(uhCaptureIndex == 0)
{
uwIC2Value1 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_2);
uhCaptureIndex = 1;
}if (uhCaptureIndex == 0) { ... }
else if(uhCaptureIndex == 1)
{
uwIC2Value2 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_2);
if (uwIC2Value2 > uwIC2Value1)
{
uwDiffCapture = (uwIC2Value2 - uwIC2Value1);
}if (uwIC2Value2 > uwIC2Value1) { ... }
else if (uwIC2Value2 < uwIC2Value1)
{
uwDiffCapture = ((0xFFFF - uwIC2Value1) + uwIC2Value2);
}else if (uwIC2Value2 < uwIC2Value1) { ... }
else
{
/* ... */
Error_Handler();
}else { ... }
/* ... */
uwFrequency = (2*HAL_RCC_GetPCLK2Freq()) / uwDiffCapture;
uhCaptureIndex = 0;
}else if (uhCaptureIndex == 1) { ... }
}if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2) { ... }
}{ ... }
/* ... */
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
HAL_StatusTypeDef ret = HAL_OK;
__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 = 360;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
RCC_OscInitStruct.PLL.PLLR = 6;
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
if(ret != HAL_OK)
{
while(1) { ; }
}if (ret != HAL_OK) { ... }
ret = HAL_PWREx_EnableOverDrive();
if(ret != HAL_OK)
{
while(1) { ; }
}if (ret != HAL_OK) { ... }
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;
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
if(ret != HAL_OK)
{
while(1) { ; }
}if (ret != HAL_OK) { ... }
}{ ... }
/* ... */
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
/* ... */
/* ... */