STM32F030C6T6 Режиме захвата

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"
 
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
 
/* USER CODE END Includes */
 
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
 
/* USER CODE END PTD */
 
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define IDLE   0
#define DONE   1
#define F_CLK  48000000UL
/* USER CODE END PD */
 
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
 
/* USER CODE END PM */
 
/* Private variables ---------------------------------------------------------*/
 
/* USER CODE BEGIN PV */
 
/* USER CODE END PV */
 
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
 
/* USER CODE END PFP */
 
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
 
volatile uint8_t gu8_State = IDLE;
volatile uint8_t gu8_MSG[35] = {'\0'};
volatile uint32_t gu32_T1 = 0;
volatile uint32_t gu32_T2 = 0;
volatile uint32_t gu32_Ticks = 0;
volatile uint16_t gu16_TIM14_OVC = 0;
volatile uint32_t gu32_Freq = 0;
 
/* USER CODE END 0 */
 
/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */
 
  /* USER CODE END 1 */
 
  /* MCU Configuration--------------------------------------------------------*/
 
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();
 
  /* USER CODE BEGIN Init */
 
  /* USER CODE END Init */
 
  /* Configure the system clock */
  SystemClock_Config();
 
  /* USER CODE BEGIN SysInit */
 
  /* USER CODE END SysInit */
 
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_TIM14_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
 
  // Работаем с таймером
  __HAL_TIM_CLEAR_IT(&htim14, TIM_IT_UPDATE);//снимаем флаг
 
  HAL_TIM_Base_Start_IT(&htim14); // Запуск таймера для получения прерывания PeriodElapsedCallback
  HAL_TIM_IC_Start_IT(&htim14, TIM_CHANNEL_1); //Включаем канал 1 таймера 14 на работу в режиме Input Capture
 
  HAL_Delay(100); //Задержка для HAL_TIM_PeriodElapsedCallback
 
  /* USER CODE END 2 */
 
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
 
    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}
 
/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
 
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  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.PLLMUL = RCC_PLL_MUL2;
  RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
 
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
 
  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1;
  PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
  HAL_RCC_MCOConfig(RCC_MCO, RCC_MCO1SOURCE_HSE, RCC_MCODIV_8);
}
 
/* USER CODE BEGIN 4 */
 
void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef* htim)
{
    if(gu8_State == IDLE)
    {
        gu32_T1 = TIM14->CCR1; // Записываем значение CNT первого фронта
        gu16_TIM14_OVC = 0;
        gu8_State = DONE;
    }
    else if(gu8_State == DONE)
    {
        gu32_T2 = TIM14->CCR1; // Записываем значение CNT второго фронта
        gu32_Ticks = (gu32_T2 + (gu16_TIM14_OVC * 65536)) - gu32_T1; // Разница между двумя фронтами
        gu32_Freq = (uint32_t)(F_CLK/gu32_Ticks); // Частота следования импульсов
        if(gu32_Freq != 0)
        {
          sprintf(gu8_MSG, "Frequency = %lu Hz\n\r", gu32_Freq); // Вывод измеренной частоты в UART
          HAL_UART_Transmit(&huart1, gu8_MSG, sizeof(gu8_MSG), 100);
        }
        gu8_State = IDLE;
    }
}
 
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef* htim)
{
    gu16_TIM14_OVC++;
}
 
/* USER CODE END 4 */
 
/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}
 
#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

void TIM14_IRQHandler(void)
{
  /* USER CODE BEGIN TIM14_IRQn 0 */
 
  /* USER CODE END TIM14_IRQn 0 */
  HAL_TIM_IRQHandler(&htim14);
  /* USER CODE BEGIN TIM14_IRQn 1 */
 
  /* USER CODE END TIM14_IRQn 1 */
}

/* TIM14 init function */
void MX_TIM14_Init(void)
{
 
  /* USER CODE BEGIN TIM14_Init 0 */
 
  /* USER CODE END TIM14_Init 0 */
 
  TIM_IC_InitTypeDef sConfigIC = {0};
 
  /* USER CODE BEGIN TIM14_Init 1 */
 
  /* USER CODE END TIM14_Init 1 */
  htim14.Instance = TIM14;
  htim14.Init.Prescaler = 0;
  htim14.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim14.Init.Period = 65535;
  htim14.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim14.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim14) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_IC_Init(&htim14) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_FALLING;
  sConfigIC.ICSelection = TIM_ICSELECTION_DIRECTTI;
  sConfigIC.ICPrescaler = TIM_ICPSC_DIV1;
  sConfigIC.ICFilter = 0;
  if (HAL_TIM_IC_ConfigChannel(&htim14, &sConfigIC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIMEx_RemapConfig(&htim14, TIM_TIM14_MCO) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM14_Init 2 */
 
  /* USER CODE END TIM14_Init 2 */
}

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    tim.c
  * @brief   This file provides code for the configuration
  *          of the TIM instances.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "tim.h"
 
/* USER CODE BEGIN 0 */
 
/* USER CODE END 0 */
 
TIM_HandleTypeDef htim14;
 
/* TIM14 init function */
void MX_TIM14_Init(void)
{
 
  /* USER CODE BEGIN TIM14_Init 0 */
 
  /* USER CODE END TIM14_Init 0 */
 
  TIM_IC_InitTypeDef sConfigIC = {0};
 
  /* USER CODE BEGIN TIM14_Init 1 */
 
  /* USER CODE END TIM14_Init 1 */
  htim14.Instance = TIM14;
  htim14.Init.Prescaler = 0;
  htim14.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim14.Init.Period = 65535;
  htim14.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim14.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim14) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_IC_Init(&htim14) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_FALLING;
  sConfigIC.ICSelection = TIM_ICSELECTION_DIRECTTI;
  sConfigIC.ICPrescaler = TIM_ICPSC_DIV1;
  sConfigIC.ICFilter = 0;
  if (HAL_TIM_IC_ConfigChannel(&htim14, &sConfigIC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIMEx_RemapConfig(&htim14, TIM_TIM14_MCO) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM14_Init 2 */
 
  /* USER CODE END TIM14_Init 2 */
 
}
 
void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
{
 
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(tim_baseHandle->Instance==TIM14)
  {
  /* USER CODE BEGIN TIM14_MspInit 0 */
 
  /* USER CODE END TIM14_MspInit 0 */
    /* TIM14 clock enable */
    __HAL_RCC_TIM14_CLK_ENABLE();
 
    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**TIM14 GPIO Configuration
    PA4     ------> TIM14_CH1
    */
    GPIO_InitStruct.Pin = GPIO_PIN_4;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF4_TIM14;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
    /* TIM14 interrupt Init */
    HAL_NVIC_SetPriority(TIM14_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(TIM14_IRQn);
  /* USER CODE BEGIN TIM14_MspInit 1 */
 
  /* USER CODE END TIM14_MspInit 1 */
  }
}
 
void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
{
 
  if(tim_baseHandle->Instance==TIM14)
  {
  /* USER CODE BEGIN TIM14_MspDeInit 0 */
 
  /* USER CODE END TIM14_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_TIM14_CLK_DISABLE();
 
    /**TIM14 GPIO Configuration
    PA4     ------> TIM14_CH1
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_4);
 
    /* TIM14 interrupt Deinit */
    HAL_NVIC_DisableIRQ(TIM14_IRQn);
  /* USER CODE BEGIN TIM14_MspDeInit 1 */
 
  /* USER CODE END TIM14_MspDeInit 1 */
  }
}
 
/* USER CODE BEGIN 1 */
 
/* USER CODE END 1 */

void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef* htim)
{
    if(gu8_State == IDLE)
    {
        gu32_T1 = TIM14->CCR1; // Записываем значение CNT первого фронта
        gu16_TIM14_OVC = 0;
        gu8_State = DONE;
    }
    else if(gu8_State == DONE)
    {
        gu32_T2 = TIM14->CCR1; // Записываем значение CNT второго фронта
        gu32_Ticks = (gu32_T2 + (gu16_TIM14_OVC * 65536)) - gu32_T1; // Разница между двумя фронтами
        gu32_Freq = (uint32_t)(F_CLK/gu32_Ticks); // Частота следования импульсов
        if(gu32_Freq != 0)
        {
          sprintf(gu8_MSG, "Frequency = %lu Hz\n\r", gu32_Freq); // Вывод измеренной частоты в UART
          HAL_UART_Transmit(&huart1, gu8_MSG, sizeof(gu8_MSG), 100);
        }
        gu8_State = IDLE;
    }
}

void Timer_14() iv IVT_INT_TIM14 ics ICS_AUTO 
{
 
}

void main() 
{
while(1)
{
 
}
}