[问答]

是否需要检查或遵循任何配置或设置来触发HAL_TIM_IC_CaptureCallback？

问答对人有帮助，内容完整，我也想知道答案 0 大家好，我试图通过调用 HAL_tiM_IC_CaptureCallback 函数来捕获定时器的上升沿和下降沿。我将 timer1 设置为 pwm 生成，将 timer2 设置为输入捕获直接模式。我正在在线关注示例代码。我能够在我的个人 PC 上触发 HAL_TIM_IC_CaptureCallback（通过触发 LED2 并监控实时表达式中的变量值来检查），但它在我的工作笔记本电脑上不起作用。是否需要检查或遵循任何配置或设置来触发 HAL_TIM_IC_CaptureCallback？谢谢！ /* Private user code ---------------------------------------------------------/ / USER CODE BEGIN 0 / #define TIMCLOCK 16000000 #define PRESCALAR 16000 uint32_t IC_Val1 = 0; uint32_t IC_Val2 = 0; uint32_t Difference = 0; int Is_First_Captured = 0; uint32_t usWidth = 0; void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef htim) { if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1) // if the interrupt source is channel1 { if (Is_First_Captured==0) // if the first value is not captured { HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5); IC_Val1 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1); // read the first value Is_First_Captured = 1; // set the first captured as true } else // if the first is already captured { IC_Val2 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1); // read second value if (IC_Val2 > IC_Val1) { Difference = IC_Val2-IC_Val1; } else if (IC_Val1 > IC_Val2) { Difference = (0xffffffff - IC_Val1) + IC_Val2; } float refClock = TIMCLOCK/(PRESCALAR); float mFactor = 1000000/refClock; usWidth = DifferencemFactor; __HAL_TIM_SET_COUNTER(htim, 0); // reset the counter Is_First_Captured = 0; // set it back to false } } } / 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_TIM1_Init(); MX_TIM2_Init(); / USER CODE BEGIN 2 / TIM1->CCR1 = 50; HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1); HAL_TIM_IC_Start_IT(&htim2, TIM_CHANNEL_1); / USER CODE END 2 / / Infinite loop / / USER CODE BEGIN WHILE / while (1) { / USER CODE END WHILE / / USER CODE BEGIN 3 / HAL_Delay (1000); } / USER CODE END 3 / } /* * @brief System Clock Configuration * @retval None / void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; /* Configure the main internal regulator output voltage / __HAL_RCC_PWR_CLK_ENABLE(); __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3); /* 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.PLLM = 4; RCC_OscInitStruct.PLL.PLLN = 64; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; RCC_OscInitStruct.PLL.PLLQ = 2; RCC_OscInitStruct.PLL.PLLR = 2; 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_CLOCKTYPE_PCLK2; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV4; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK) { Error_Handler(); } } /* * @brief TIM1 Initialization Function * @param None * @retval None / static void MX_TIM1_Init(void) { / USER CODE BEGIN TIM1_Init 0 / / USER CODE END TIM1_Init 0 / TIM_ClockConfigTypeDef sClockSourceConfig = {0}; TIM_MasterConfigTypeDef sMasterConfig = {0}; TIM_OC_InitTypeDef sConfigOC = {0}; TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0}; / USER CODE BEGIN TIM1_Init 1 / / USER CODE END TIM1_Init 1 / htim1.Instance = TIM1; htim1.Init.Prescaler = 16000-1; htim1.Init.CounterMode = TIM_COUNTERMODE_UP; htim1.Init.Period = 100-1; htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; htim1.Init.RepetitionCounter = 0; htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE; if (HAL_TIM_Base_Init(&htim1) != HAL_OK) { Error_Handler(); } sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL; if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK) { Error_Handler(); } if (HAL_TIM_PWM_Init(&htim1) != HAL_OK) { Error_Handler(); } sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET; sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE; if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK) { Error_Handler(); } sConfigOC.OCMode = TIM_OCMODE_PWM1; sConfigOC.Pulse = 0; sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH; sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH; sConfigOC.OCFastMode = TIM_OCFAST_DISABLE; sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET; sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET; if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1) != HAL_OK) { Error_Handler(); } sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE; sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE; sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF; sBreakDeadTimeConfig.DeadTime = 0; sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE; sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH; sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE; if (HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig) != HAL_OK) { Error_Handler(); } / USER CODE BEGIN TIM1_Init 2 / / USER CODE END TIM1_Init 2 / HAL_TIM_MspPostInit(&htim1); } /* * @brief TIM2 Initialization Function * @param None * @retval None / static void MX_TIM2_Init(void) { / USER CODE BEGIN TIM2_Init 0 / / USER CODE END TIM2_Init 0 / TIM_ClockConfigTypeDef sClockSourceConfig = {0}; TIM_MasterConfigTypeDef sMasterConfig = {0}; TIM_IC_InitTypeDef sConfigIC = {0}; / USER CODE BEGIN TIM2_Init 1 / / USER CODE END TIM2_Init 1 / htim2.Instance = TIM2; htim2.Init.Prescaler = 8000-1; htim2.Init.CounterMode = TIM_COUNTERMODE_UP; htim2.Init.Period = 100-1; htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE; if (HAL_TIM_Base_Init(&htim2) != HAL_OK) { Error_Handler(); } sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL; if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK) { Error_Handler(); } if (HAL_TIM_IC_Init(&htim2) != HAL_OK) { Error_Handler(); } sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET; sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE; if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK) { Error_Handler(); } sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_RISING; sConfigIC.ICSelection = TIM_ICSELECTION_DIRECTTI; sConfigIC.ICPrescaler = TIM_ICPSC_DIV1; sConfigIC.ICFilter = 0; if (HAL_TIM_IC_ConfigChannel(&htim2, &sConfigIC, TIM_CHANNEL_1) != HAL_OK) { Error_Handler(); } / USER CODE BEGIN TIM2_Init 2 / / USER CODE END TIM2_Init 2 */ } 0
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答案对人有帮助，有参考价值 0 问题是我没有在 PWM 端口和 I2C 捕获端口之间连接电线。

2022-12-7 13:56:48 评论举报潘飘稚