windows2012iis网站默认设置,wordpress博客 知乎,手机优化大师怎么卸载,怎么给公司做网站推广实现效果 DAC输出的电压 同过电压表测量电压 1.DAC配置的步骤 初始化DAC时钟。配置DAC的GPIO端口。设置DAC的工作模式#xff08;例如#xff0c;是否使用触发功能#xff0c;是否启用DAC中断等#xff09;。启动DAC。 2常用的函数 函数 HAL_DAC_Start() - 开启指定… 实现效果 DAC输出的电压 同过电压表测量电压 1.DAC配置的步骤 初始化DAC时钟。配置DAC的GPIO端口。设置DAC的工作模式例如是否使用触发功能是否启用DAC中断等。启动DAC。 2常用的函数 函数 HAL_DAC_Start() - 开启指定的DAC通道。HAL_DAC_Stop() - 停止指定的DAC通道。HAL_DAC_Start_DMA() - 开启DAC并启动DMA直接存储器访问模式。HAL_DAC_Stop_DMA() - 停止DAC DMA模式。HAL_DAC_SetValue() - 设置指定DAC通道的输出值。HAL_DAC_GetValue() - 获取指定DAC通道的输出值如果支持。HAL_DACEx_TriangleWaveGenerate() - 启用三角波生成模式。HAL_DACEx_NoiseWaveGenerate() - 启用噪声波生成模式。HAL_DACEx_DualSetValue() - 如果微控制器支持双DAC此函数用于同时设置两个通道的值。HAL_DACEx_DualStart() - 同时启动两个DAC通道。HAL_DACEx_DualStop() - 同时停止两个DAC通道。 函数讲解 HAL_DAC_Start() 原型HAL_StatusTypeDef HAL_DAC_Start(DAC_HandleTypeDef* hdac, uint32_t Channel)说明启动指定的DAC通道使其开始转换数字信号到模拟信号。hdac是DAC句柄Channel指定要启动的通道DAC_CHANNEL_1或DAC_CHANNEL_2。HAL_DAC_Stop() 原型HAL_StatusTypeDef HAL_DAC_Stop(DAC_HandleTypeDef* hdac, uint32_t Channel)说明停止指定的DAC通道停止模拟信号的输出。hdac是DAC句柄Channel指定要停止的通道。HAL_DAC_Start_DMA() 原型HAL_StatusTypeDef HAL_DAC_Start_DMA(DAC_HandleTypeDef* hdac, uint32_t Channel, uint32_t* pData, uint32_t Length, uint32_t Alignment)说明启动DAC通道并开始使用DMA进行数据传输。pData是指向要传输的数据的指针Length是数据的长度Alignment指定数据对齐方式。HAL_DAC_Stop_DMA() 原型HAL_StatusTypeDef HAL_DAC_Stop_DMA(DAC_HandleTypeDef* hdac, uint32_t Channel)说明停止DAC的DMA传输。hdac是DAC句柄Channel指定要停止DMA的通道。HAL_DAC_SetValue() 原型HAL_StatusTypeDef HAL_DAC_SetValue(DAC_HandleTypeDef* hdac, uint32_t Channel, uint32_t Alignment, uint32_t Data)说明设置指定DAC通道的输出值。Channel 通道选择。Data是要设置的值Alignment指定数据对齐方式。HAL_DAC_GetValue() 原型uint32_t HAL_DAC_GetValue(DAC_HandleTypeDef* hdac, uint32_t Channel)说明获取指定DAC通道的输出值。注意DAC通常不支持读取输出值因此这个函数可能不可用。HAL_DACEx_TriangleWaveGenerate() 原型HAL_StatusTypeDef HAL_DACEx_TriangleWaveGenerate(DAC_HandleTypeDef* hdac, uint32_t Channel, uint32_t TriangleAmplitude)说明启用DAC的三角波生成模式。TriangleAmplitude指定三角波的幅度。HAL_DACEx_NoiseWaveGenerate() 原型HAL_StatusTypeDef HAL_DACEx_NoiseWaveGenerate(DAC_HandleTypeDef* hdac, uint32_t Channel, uint32_t Amplitude)说明启用DAC的噪声波生成模式。Amplitude指定噪声波的幅度。HAL_DACEx_DualSetValue() 原型HAL_StatusTypeDef HAL_DACEx_DualSetValue(DAC_HandleTypeDef* hdac, uint32_t Alignment, uint32_t Data1, uint32_t Data2)说明如果微控制器支持双DAC这个函数用于同时设置两个通道的值。HAL_DACEx_DualStart() 原型HAL_StatusTypeDef HAL_DACEx_DualStart(DAC_HandleTypeDef* hdac)说明同时启动两个DAC通道。HAL_DACEx_DualStop() 原型HAL_StatusTypeDef HAL_DACEx_DualStop(DAC_HandleTypeDef* hdac)说明同时停止两个DAC通道。 这些函数返回HAL_StatusTypeDef类型表示操作的状态如HAL_OK表示操作成功HAL_ERROR表示操作失败。在使用这些函数时需要确保已经正确初始化了DAC句柄和相关硬件配置。 3  STM32cude设置 1设置时钟 2打开DAC 下图为DAC的通道第三个选项为是否打开外部触发源 下图为DAC的参数设置 为是否打开缓冲 选择外部触发源的选择 4代码设置 DAC值 (期望电压 / 参考电压) * 最大值 如    uint32_t dacValue (3.0f / 3.3f) * 4095; // 计算出输出3.0V对应的DAC值 main文件源码 /* USER CODE BEGIN Header */ /********************************************************************************* file : main.c* brief : Main program body******************************************************************************* attention** Copyright (c) 2024 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 dac.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 *//* 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 *//* 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_DAC_Init();/* USER CODE BEGIN 2 */HAL_DAC_Start(hdac,DAC1_CHANNEL_1);//开启dac使用通道1输出// DAC值 (期望电压 / 参考电压) * 最大值uint32_t dacValue (2.50f / 3.3f) * 4095; // 计算出输出3.0V对应的DAC值HAL_DAC_SetValue(hdac,DAC1_CHANNEL_1,DAC_ALIGN_12B_R,dacValue);//输出值/* 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_HSE;RCC_OscInitStruct.HSEState RCC_HSE_ON;RCC_OscInitStruct.HSEPredivValue RCC_HSE_PREDIV_DIV1;RCC_OscInitStruct.HSIState RCC_HSI_ON;RCC_OscInitStruct.PLL.PLLState RCC_PLL_ON;RCC_OscInitStruct.PLL.PLLSource RCC_PLLSOURCE_HSE;RCC_OscInitStruct.PLL.PLLMUL RCC_PLL_MUL9;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_DIV1;RCC_ClkInitStruct.APB1CLKDivider RCC_HCLK_DIV2;RCC_ClkInitStruct.APB2CLKDivider RCC_HCLK_DIV1;if (HAL_RCC_ClockConfig(RCC_ClkInitStruct, FLASH_LATENCY_2) ! HAL_OK){Error_Handler();} }/* 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\r\n, file, line) *//* USER CODE END 6 */ } #endif /* USE_FULL_ASSERT */