[问答]

如何增加cubeIDE中断的ADC采样数呢？

问答对人有帮助，内容完整，我也想知道答案 0 这对我来说是一个反复出现的问题，每当我将 ADC 频率提高到 0.25MHZ 以上时，while 循环就会中断，而当我使用低于该频率的频率时，ADC 分辨率会因未知原因下降到 8 位。有没有一种方法可以解决此问题而无需使用轮询进行转换或 IT？注意：我正在使用 cubeIDE。 /* USER CODE BEGIN Header / /* ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * © Copyright (c) 2021 STMicroelectronics. * All rights reserved. * * This software component is licensed by ST under BSD 3-Clause license, * the "License"; You may not use this file except in compliance with the * License. You may obtain a copy of the License at: * opensource.org/licenses/BSD-3-Clause * ****************************************************************************** / / USER CODE END Header / / Includes ------------------------------------------------------------------/ #include "main.h" / Private includes ----------------------------------------------------------/ / USER CODE BEGIN Includes / #include #include / 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 ---------------------------------------------------------/ ADC_HandleTypeDef hadc1; DMA_HandleTypeDef hdma_adc1; UART_HandleTypeDef huart3; / USER CODE BEGIN PV / / USER CODE END PV / / Private function prototypes -----------------------------------------------/ void SystemClock_Config(void); static void MX_GPIO_Init(void); static void MX_DMA_Init(void); static void MX_ADC1_Init(void); static void MX_USART3_UART_Init(void); / USER CODE BEGIN PFP / / USER CODE END PFP / / Private user code ---------------------------------------------------------/ / USER CODE BEGIN 0 / char msg[26]; uint16_t var=0; uint32_t buffer=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_DMA_Init(); MX_ADC1_Init(); MX_USART3_UART_Init(); / USER CODE BEGIN 2 / HAL_ADC_Start_DMA(&hadc1, &buffer, 1); HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15,1); / USER CODE END 2 / / Infinite loop / / USER CODE BEGIN WHILE / while (1) { / USER CODE END WHILE / / USER CODE BEGIN 3 / snprintf(msg,10,"%d ",buffer); HAL_UART_Transmit(&huart3, msg, strlen(msg), HAL_MAX_DELAY); HAL_Delay(500); } / 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_HSI; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; 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_HSI; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV16; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK) { Error_Handler(); } PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC; PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV2; if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) { Error_Handler(); } } /* * @brief ADC1 Initialization Function * @param None * @retval None / static void MX_ADC1_Init(void) { / USER CODE BEGIN ADC1_Init 0 / / USER CODE END ADC1_Init 0 / ADC_ChannelConfTypeDef sConfig = {0}; / USER CODE BEGIN ADC1_Init 1 / / USER CODE END ADC1_Init 1 / /* Common config / hadc1.Instance = ADC1; hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE; hadc1.Init.ContinuousConvMode = ENABLE; hadc1.Init.DiscontinuousConvMode = DISABLE; hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START; hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc1.Init.NbrOfConversion = 1; if (HAL_ADC_Init(&hadc1) != HAL_OK) { Error_Handler(); } /* Configure Regular Channel / sConfig.Channel = ADC_CHANNEL_0; sConfig.Rank = ADC_REGULAR_RANK_1; sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5; if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) { Error_Handler(); } / USER CODE BEGIN ADC1_Init 2 / / USER CODE END ADC1_Init 2 / } /* * @brief USART3 Initialization Function * @param None * @retval None / static void MX_USART3_UART_Init(void) { / USER CODE BEGIN USART3_Init 0 / / USER CODE END USART3_Init 0 / / USER CODE BEGIN USART3_Init 1 / / USER CODE END USART3_Init 1 / huart3.Instance = USART3; huart3.Init.BaudRate = 1200; huart3.Init.WordLength = UART_WORDLENGTH_8B; huart3.Init.StopBits = UART_STOPBITS_1; huart3.Init.Parity = UART_PARITY_EVEN; huart3.Init.Mode = UART_MODE_TX_RX; huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart3.Init.OverSampling = UART_OVERSAMPLING_16; if (HAL_UART_Init(&huart3) != HAL_OK) { Error_Handler(); } / USER CODE BEGIN USART3_Init 2 / / USER CODE END USART3_Init 2 / } /* * Enable DMA controller clock / static void MX_DMA_Init(void) { / DMA controller clock enable / __HAL_RCC_DMA1_CLK_ENABLE(); / DMA interrupt init / / DMA1_Channel1_IRQn interrupt configuration / HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0); HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn); } /* * @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(); __HAL_RCC_GPIOB_CLK_ENABLE(); /Configure GPIO pin Output Level / HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15, GPIO_PIN_RESET); /Configure GPIO pin : PA15 / GPIO_InitStruct.Pin = GPIO_PIN_15; 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 / /********************* (C) COPYRIGHT STMicroelectronics *END OF FILE**/ 0
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答案对人有帮助，有参考价值 0 为样本数输入一个大于 1 的值。 uint16_t data[2048]; HAL_ADC_Start_DMA(&hadc1, data, 2048);

2022-12-22 16:17:41 评论举报徐依妮