[问答]

为什么使用stm32f030k6t6在tim3中断中测量时序在分析器逻辑中是错误的？

问答对人有帮助，内容完整，我也想知道答案 0 你好！我在 STM32f030k6t6 中使用定时器中断 tim3，我想配置不同的定时器更新 5ms，我正在使用 ecuation：tout=(prescalerpreload)/(clock_frecuency)。预加载的其他计算是：预加载=(toutclock_frecuency)/(prescaler)。现在，对于 5 毫秒（0,005 秒），预加载为：预加载=(0.005481000000)/100，预加载=2400，预分频器=100，时钟频率= 48Mhz。定时器配置值，代码是： /* USER CODE BEGIN Header / /* ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2022 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" / 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 / / 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); static void MX_GPIO_Init(void); static void MX_TIM16_Init(void); static void MX_TIM3_Init(void); / USER CODE BEGIN PFP / / USER CODE END PFP / / Private user code ---------------------------------------------------------/ / USER CODE BEGIN 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_TIM16_Init(); MX_TIM3_Init(); / USER CODE BEGIN 2 / /---------------------------------------------------------/ /---------------------------------------------------------/ /------------ habilita interrupcion del timer -----------/ LL_TIM_EnableIT_UPDATE(TIM3); // LL_TIM_EnableIT_UPDATE(TIM14); // LL_TIM_EnableIT_UPDATE(TIM16); /---------------------------------------------------------/ /---------- inicializa el contador ------------------------/ LL_TIM_EnableCounter(TIM3); // LL_TIM_EnableCounter(TIM14); // LL_TIM_EnableCounter(TIM16); // LL_TIM_EnableCounter(TIM17); / 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}; /* Initializes the RCC Oscillators according to the specified parameters * in the RCC_OscInitTypeDef structure. / RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL12; 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(); } } /* * @brief TIM3 Initialization Function * @param None * @retval None / static void MX_TIM3_Init(void) { / USER CODE BEGIN TIM3_Init 0 / / USER CODE END TIM3_Init 0 / LL_TIM_InitTypeDef TIM_InitStruct = {0}; / Peripheral clock enable / LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM3); / TIM3 interrupt Init / NVIC_SetPriority(TIM3_IRQn, 0); NVIC_EnableIRQ(TIM3_IRQn); / USER CODE BEGIN TIM3_Init 1 / / USER CODE END TIM3_Init 1 / TIM_InitStruct.Prescaler = 1000; TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP; TIM_InitStruct.Autoreload = 2400; TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1; LL_TIM_Init(TIM3, &TIM_InitStruct); LL_TIM_EnableARRPreload(TIM3); LL_TIM_SetClockSource(TIM3, LL_TIM_CLOCKSOURCE_INTERNAL); LL_TIM_SetTriggerOutput(TIM3, LL_TIM_TRGO_RESET); LL_TIM_DisableMasterSlaveMode(TIM3); / USER CODE BEGIN TIM3_Init 2 / / USER CODE END TIM3_Init 2 / } /* * @brief TIM16 Initialization Function * @param None * @retval None / static void MX_TIM16_Init(void) { / USER CODE BEGIN TIM16_Init 0 / / USER CODE END TIM16_Init 0 / LL_TIM_InitTypeDef TIM_InitStruct = {0}; / Peripheral clock enable / LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_TIM16); / TIM16 interrupt Init / NVIC_SetPriority(TIM16_IRQn, 0); NVIC_EnableIRQ(TIM16_IRQn); / USER CODE BEGIN TIM16_Init 1 / / USER CODE END TIM16_Init 1 / TIM_InitStruct.Prescaler = 1000; TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP; TIM_InitStruct.Autoreload = 274; TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1; TIM_InitStruct.RepetitionCounter = 0; LL_TIM_Init(TIM16, &TIM_InitStruct); LL_TIM_EnableARRPreload(TIM16); / USER CODE BEGIN TIM16_Init 2 / / USER CODE END TIM16_Init 2 / } /* * @brief GPIO Initialization Function * @param None * @retval None / static void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct = {0}; / GPIO Ports Clock Enable / __HAL_RCC_GPIOA_CLK_ENABLE(); /Configure GPIO pin Output Level / HAL_GPIO_WritePin(GPIOA, sal1_Pin\|sal2_Pin, GPIO_PIN_RESET); /Configure GPIO pins : sal1_Pin sal2_Pin / GPIO_InitStruct.Pin = sal1_Pin\|sal2_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); } / USER CODE BEGIN 4 / / 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 ", file, line) / / USER CODE END 6 / } #endif / USE_FULL_ASSERT */ 定时器中断是：我用分析器逻辑查看时间，但不是真实值，时间是错误的。时间是 2.9 us，我想要 5ms 的更新定时器中断 0
2022-12-7 07:20:28　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × wang21cj 该类别下有 47 个回答。邀请回答 chm5 该类别下有 44 个回答。邀请回答新星之火12138 该类别下有 42 个回答。邀请回答 hgimtk 该类别下有 36 个回答。邀请回答 HengDu 该类别下有 31 个回答。邀请回答 hwp0415229 该类别下有 30 个回答。邀请回答可口可甜该类别下有 30 个回答。邀请回答 jghgfdssas 该类别下有 28 个回答。邀请回答 jiangwenwen 该类别下有 28 个回答。邀请回答 kingnet6688 该类别下有 28 个回答。邀请回答麻酱该类别下有 28 个回答。邀请回答 andyfly7 该类别下有 28 个回答。邀请回答 bluepink 该类别下有 27 个回答。邀请回答法规处发该类别下有 27 个回答。邀请回答 ldliu 该类别下有 27 个回答。邀请回答成长的小师弟该类别下有 27 个回答。邀请回答云汉007 该类别下有 27 个回答。邀请回答颜刚YanG 该类别下有 27 个回答。邀请回答柱子图宁该类别下有 27 个回答。邀请回答 uuwyfsdfsf 该类别下有 26 个回答。邀请回答举报三心四意相关推荐 • 为什么要用XM1008K6T6芯片去替代STM32F030K6T6呢 2077 • 如何在stm32f030k6t6运行时获得所有低脉冲宽度呢 425 • 有哪些方法可以去调整STM32定时器TIM3中断输出频率吗 1754 • STM32F030做TIM3的定时中断时，中断处理服务函数无法进去 9063 • MM32F031K6T6产品特性介绍 2281 • 采用STM32F030K6T6作互补PWM输出时，互补通道没有波形输出是为什么？ 395 • STM32F030K6T6作互补PWM输出时互补通道没有波形输出 3770 • stm32f030c8的tim6及tim15怎么设置都不响应怎么解决？ 586 • STM32F030F4P6的TIM1不能进中断是为什么？ 1467 • 使用示波器时每个定时器中断显示为4毫秒是怎么回事 389 1个回答

答案对人有帮助，有参考价值 0 中断处理程序需要清除中断源此外，发帖时请删除所有不相关的评论。 void TIM3_IRQHandler(void) { if (TIM3->SR & 1) // 验证更新源 { TIM3->SR = ~1；// 清除更新 HAL_GPIO_TogglePin(GPIOA, sal1_Pin); HAL_GPIO_TogglePin(GPIOA, sal2_Pin); } }

2022-12-7 14:49:57 评论举报李丽华