STM32Cubmax DAC 采集

一、概念

DMA，全称为： Direct Memory Access，即直接存储器访问， DMA 传输将数据从一个
地址空间复制到另外一个地址空间。 当 CPU 初始化这个传输动作，传输动作本身是由
DMA 控制器 来实行和完成。典型的例子就是移动一个外部内存的区块到芯片内部更快的
内存区。像是这样的操作并没有让处理器工作拖延，反而可以被重新排程去处理其他的工
作。 DMA 传输对于高效能嵌入式系统算法和网络是很重要的。 DMA 传输方式无需 CPU 直接
控制传输，也没有中断处理方式那样保留现场和恢复现场的过程，通过硬件为 RAM 与 I/O 设备
开辟一条直接传送数据的通路， 能使 CPU 的效率大为提高。
 

也就是说DMA就是一个搬运工，搬运来自CPU的数据

二、代码实现

2.1 内存到内存搬运

HAL_StatusTypeDef HAL_DMA_Start(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t
DstAddress, uint32_t DataLength)
说明：

#define __HAL_DMA_GET_FLAG(__HANDLE__, __FLAG__) (DMA1->ISR & (__FLAG__)说明

/* 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 "dma.h"
#include "usart.h"
#include "gpio.h"
#include <stdio.h>/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes *//* USER CODE END Includes */
#define BUF_SIZE 16
// 源数组
uint32_t srcBuf[BUF_SIZE] = {
0x00000000,0x11111111,0x22222222,0x33333333,
0x44444444,0x55555555,0x66666666,0x77777777,
0x88888888,0x99999999,0xAAAAAAAA,0xBBBBBBBB,
0xCCCCCCCC,0xDDDDDDDD,0xEEEEEEEE,0xFFFFFFFF
};
// 目标数组
uint32_t desBuf[BUF_SIZE];
int fputc(int ch, FILE *f)
{unsigned char temp[1]={ch};HAL_UART_Transmit(&huart1,temp,1,0xffff);return ch;
}
/* 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 */int i = 0;/* 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_USART1_UART_Init();/* USER CODE BEGIN 2 */HAL_DMA_Start(&hdma_memtomem_dma1_channel1,(uint32_t)srcBuf, (uint32_t)desBuf, sizeof(uint32_t) * BUF_SIZE);/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE */while(__HAL_DMA_GET_FLAG(&hdma_memtomem_dma1_channel1, DMA_FLAG_TC1) == RESET);for (i = 0; i < BUF_SIZE; i++)printf("Buf[%d] = %X\r\n", i, desBuf[i]);/* 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 */

2.2 内存到外设搬运

/* 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 "dma.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 */
#define BUF_SIZE 1000
// 待发送的数据
unsigned char sendBuf[BUF_SIZE];
/* 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 */int i = 0;/* 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_USART1_UART_Init();/* USER CODE BEGIN 2 */for (i = 0; i < BUF_SIZE; i++)sendBuf[i] = 'A';
// 将数据通过串口DMA发送HAL_UART_Transmit_DMA(&huart1, sendBuf, BUF_SIZE);/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE */HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_5);HAL_Delay(100);/* 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 */

2.3 外设到内存搬运

stm32f1xx.h

/* USER CODE BEGIN Header */
/********************************************************************************* @file    stm32f1xx_it.c* @brief   Interrupt Service Routines.******************************************************************************* @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 "usart.h"
#include "dma.h"
#include "stm32f1xx_it.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */uint8_t rcvBuf[BUF_SIZE];uint8_t rcvLen;
void USART1_IRQHandler(void)
{
/* USER CODE BEGIN USART1_IRQn 0 */
/* USER CODE END USART1_IRQn 0 */
HAL_UART_IRQHandler(&huart1);
/* USER CODE BEGIN USART1_IRQn 1 */
if((__HAL_UART_GET_FLAG(&huart1,UART_FLAG_IDLE) == SET)) // 判断IDLE标志位是否被置位
{__HAL_UART_CLEAR_IDLEFLAG(&huart1);// 清除标志位HAL_UART_DMAStop(&huart1); // 停止DMA传输，防止干扰uint8_t temp=__HAL_DMA_GET_COUNTER(&hdma_usart1_rx);rcvLen = BUF_SIZE - temp; //计算数据长度HAL_UART_Transmit_DMA(&huart1, rcvBuf, rcvLen);//发送数据HAL_UART_Receive_DMA(&huart1, rcvBuf, BUF_SIZE);//开启DMA
}
/* USER CODE END USART1_IRQn 1 */
}
/* USER CODE END TD *//* 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 -----------------------------------------------*/
/* USER CODE BEGIN PFP *//* USER CODE END PFP *//* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 *//* USER CODE END 0 *//* External variables --------------------------------------------------------*/
extern DMA_HandleTypeDef hdma_usart1_tx;
extern DMA_HandleTypeDef hdma_usart1_rx;
extern UART_HandleTypeDef huart1;
/* USER CODE BEGIN EV *//* USER CODE END EV *//******************************************************************************/
/*           Cortex-M3 Processor Interruption and Exception Handlers          */
/******************************************************************************/
/*** @brief This function handles Non maskable interrupt.*/
void NMI_Handler(void)
{/* USER CODE BEGIN NonMaskableInt_IRQn 0 *//* USER CODE END NonMaskableInt_IRQn 0 *//* USER CODE BEGIN NonMaskableInt_IRQn 1 */while (1){}/* USER CODE END NonMaskableInt_IRQn 1 */
}/**twer* @brief This function handles Hard fault interrupt.*/
void HardFault_Handler(void)
{/* USER CODE BEGIN HardFault_IRQn 0 *//* USER CODE END HardFault_IRQn 0 */while (1){/* USER CODE BEGIN W1_HardFault_IRQn 0 *//* USER CODE END W1_HardFault_IRQn 0 */}
}/*** @brief This function handles Memory management fault.*/
void MemManage_Handler(void)
{/* USER CODE BEGIN MemoryManagement_IRQn 0 *//* USER CODE END MemoryManagement_IRQn 0 */while (1){/* USER CODE BEGIN W1_MemoryManagement_IRQn 0 *//* USER CODE END W1_MemoryManagement_IRQn 0 */}
}/*** @brief This function handles Prefetch fault, memory access fault.*/
void BusFault_Handler(void)
{/* USER CODE BEGIN BusFault_IRQn 0 *//* USER CODE END BusFault_IRQn 0 */while (1){/* USER CODE BEGIN W1_BusFault_IRQn 0 *//* USER CODE END W1_BusFault_IRQn 0 */}
}/*** @brief This function handles Undefined instruction or illegal state.*/
void UsageFault_Handler(void)
{/* USER CODE BEGIN UsageFault_IRQn 0 *//* USER CODE END UsageFault_IRQn 0 */while (1){/* USER CODE BEGIN W1_UsageFault_IRQn 0 *//* USER CODE END W1_UsageFault_IRQn 0 */}
}/*** @brief This function handles System service call via SWI instruction.*/
void SVC_Handler(void)
{/* USER CODE BEGIN SVCall_IRQn 0 *//* USER CODE END SVCall_IRQn 0 *//* USER CODE BEGIN SVCall_IRQn 1 *//* USER CODE END SVCall_IRQn 1 */
}/*** @brief This function handles Debug monitor.*/
void DebugMon_Handler(void)
{/* USER CODE BEGIN DebugMonitor_IRQn 0 *//* USER CODE END DebugMonitor_IRQn 0 *//* USER CODE BEGIN DebugMonitor_IRQn 1 *//* USER CODE END DebugMonitor_IRQn 1 */
}/*** @brief This function handles Pendable request for system service.*/
void PendSV_Handler(void)
{/* USER CODE BEGIN PendSV_IRQn 0 *//* USER CODE END PendSV_IRQn 0 *//* USER CODE BEGIN PendSV_IRQn 1 *//* USER CODE END PendSV_IRQn 1 */
}/*** @brief This function handles System tick timer.*/
void SysTick_Handler(void)
{/* USER CODE BEGIN SysTick_IRQn 0 *//* USER CODE END SysTick_IRQn 0 */HAL_IncTick();/* USER CODE BEGIN SysTick_IRQn 1 *//* USER CODE END SysTick_IRQn 1 */
}/******************************************************************************/
/* STM32F1xx Peripheral Interrupt Handlers                                    */
/* Add here the Interrupt Handlers for the used peripherals.                  */
/* For the available peripheral interrupt handler names,                      */
/* please refer to the startup file (startup_stm32f1xx.s).                    */
/******************************************************************************//*** @brief This function handles DMA1 channel4 global interrupt.*/
void DMA1_Channel4_IRQHandler(void)
{/* USER CODE BEGIN DMA1_Channel4_IRQn 0 *//* USER CODE END DMA1_Channel4_IRQn 0 */HAL_DMA_IRQHandler(&hdma_usart1_tx);/* USER CODE BEGIN DMA1_Channel4_IRQn 1 *//* USER CODE END DMA1_Channel4_IRQn 1 */
}/*** @brief This function handles DMA1 channel5 global interrupt.*/
void DMA1_Channel5_IRQHandler(void)
{/* USER CODE BEGIN DMA1_Channel5_IRQn 0 *//* USER CODE END DMA1_Channel5_IRQn 0 */HAL_DMA_IRQHandler(&hdma_usart1_rx);/* USER CODE BEGIN DMA1_Channel5_IRQn 1 *//* USER CODE END DMA1_Channel5_IRQn 1 */
}/*** @brief This function handles USART1 global interrupt.*/
//void USART1_IRQHandler(void)
//{
//  /* USER CODE BEGIN USART1_IRQn 0 *///  /* USER CODE END USART1_IRQn 0 */
//  HAL_UART_IRQHandler(&huart1);
//  /* USER CODE BEGIN USART1_IRQn 1 *///  /* USER CODE END USART1_IRQn 1 */
//}/* USER CODE BEGIN 1 *//* USER CODE END 1 */

main.h

/* USER CODE BEGIN Header */
/********************************************************************************* @file           : main.h* @brief          : Header for main.c file.*                   This file contains the common defines of the application.******************************************************************************* @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 *//* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __MAIN_H
#define __MAIN_H#ifdef __cplusplus
extern "C" {
#endif/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#define BUF_SIZE 100
/* USER CODE END Includes *//* Exported types ------------------------------------------------------------*/
/* USER CODE BEGIN ET *//* USER CODE END ET *//* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN EC *//* USER CODE END EC *//* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN EM *//* USER CODE END EM *//* Exported functions prototypes ---------------------------------------------*/
void Error_Handler(void);/* USER CODE BEGIN EFP *//* USER CODE END EFP *//* Private defines -----------------------------------------------------------*//* USER CODE BEGIN Private defines *//* USER CODE END Private defines */#ifdef __cplusplus
}
#endif#endif /* __MAIN_H */

main.c

/* 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 "dma.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 *//* 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 */int i = 0;/* 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_USART1_UART_Init();/* USER CODE BEGIN 2 */
uint8_t rcvBuf[BUF_SIZE]; // 接收数据缓存数组
uint8_t rcvLen = 0; // 接收一帧数据的长度
__HAL_UART_ENABLE_IT(&huart1, UART_IT_IDLE); // 使能IDLE空闲中断
HAL_UART_Receive_DMA(&huart1,rcvBuf,100); // 使能DMA接收中断/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE */HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_8);HAL_Delay(300);/* 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 */


 

本文来自互联网用户投稿，该文观点仅代表作者本人，不代表本站立场。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如若转载，请注明出处：http://www.rhkb.cn/news/255071.html

如若内容造成侵权/违法违规/事实不符，请联系长河编程网进行投诉反馈email:809451989@qq.com，一经查实，立即删除！

相关文章

怎么理解 Redis 事务

怎么理解 Redis 事务

背景 在面试中经常会被问到&#xff0c;redis支持事务吗&#xff1f;事务是怎么实现的&#xff1f;事务会回滚吗&#xff1f;又是一键三连&#xff0c;我下面分析下&#xff0c;看看能不能吊打面试官 什么是Redis事务 事务是一个单独的隔离操作&#xff1a;事务中的所有命令…
阅读更多...
嵌入式学习之Linux入门篇笔记——17，makefile基本语法（上）

嵌入式学习之Linux入门篇笔记——17，makefile基本语法（上）

配套视频学习链接&#xff1a;http://【【北京迅为】嵌入式学习之Linux入门篇】 https://www.bilibili.com/video/BV1M7411m7wT/?p4&share_sourcecopy_web&vd_sourcea0ef2c4953d33a9260910aaea45eaec8 目录 一&#xff0e;设置 vim 首行缩进 二.Makefile 基本语法…
阅读更多...
golang windows 环境搭建 环境配置

golang windows 环境搭建 环境配置

golang windows 环境搭建 环境配置 Golang学习之路一环境搭建 MacBook Linux 树莓派raspberrypi安装Golang环境 官网下载地址: https://go.dev/dl/ https://golang.google.cn/dl/ 下载对应系统版本&#xff0c;例如windows 64位系统&#xff0c;下载&#xff1a;xxx.window…
阅读更多...
云计算市场分析

云计算市场分析

目录 一、云计算市场概述 1.1 概述 二、国外云计算厂商 2.1 亚马逊AWS 2.2 微软AzureAzure 2.3 Apple iCloud 三、国内云计算厂商 3.1 阿里云 3.2 腾讯云 3.3 华为云 3.4 百度智能云 一、云计算市场概述 1.1 概述 云计算从出现以来&#xff0c;其发展就非常迅速。以…
阅读更多...
【数据结构】前缀树的模拟实现

【数据结构】前缀树的模拟实现

目录 1、什么是前缀树&#xff1f; 2、模拟实现 2.1、前缀树节点结构 2.2、字符串的添加 2.3、字符串的查寻 2.3.1、查询树中有多少个以字符串"pre"作为前缀的字符串 2.3.2、查询某个字符串被添加过多少次 2.4、字符串的删除 3、完整代码 1、什么是前缀树&…
阅读更多...
MacOS - M1芯片 Mac 在“恢复”模式中启用系统扩展教程

MacOS - M1芯片 Mac 在“恢复”模式中启用系统扩展教程

部分软件需要开启系统扩展才能正常使用&#xff0c;但是默然M1芯片的Mac不能直接打开系统扩展&#xff0c;如下两图。 若要启用系统扩展&#xff0c;您需要在“恢复”环境中修改安全性设置。 若要执行此操作&#xff0c;请将系统关机&#xff0c;然后按住触控ID或电源按钮以开…
阅读更多...
CSS高级技巧

CSS高级技巧

一、 精灵图 1.1 为什么需要精灵图&#xff1f; 1.2 精灵图&#xff08;sprites&#xff09;的使用 二、 字体图标 2.1 字体图标的产生 2.2 字体图标的优点 2.3 字体图标的下载 icomoom字库 http://icomoon.io 阿里iconfont字库 http://www.iconfont.cn/ 2.4 字体图标的引用…
阅读更多...
在 Docker 中启动 ROS2 里的 rivz2 和 rqt 出现错误的解决方法

在 Docker 中启动 ROS2 里的 rivz2 和 rqt 出现错误的解决方法

1. 出现错误&#xff1a; 运行 ros2 run rivz2 rivz2 &#xff0c;报错如下 &#xff1a; No protocol specified qt.qpa.xcb: could not connect to display :1 qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was f…
阅读更多...
npm 上传一个自己的应用(2) 创建一个JavaScript函数 并发布到NPM

npm 上传一个自己的应用(2) 创建一个JavaScript函数 并发布到NPM

上文 npm 上传一个自己的应用(1) 搭建一个项目环境 带着大家创建了一个项目环境 我们打开 看json的配置 我们入口是一个叫 index.js 的文件 那么 我们就要把它创建出来 之后 我们的方法也就要写在这里面 和 json同一个目录 创建 index.js 我们这里 写个简单的求和操作 index…
阅读更多...
图论与图数据应用综述：从基础概念到知识图谱与图智能

图论与图数据应用综述：从基础概念到知识图谱与图智能

目录 前言1 图论基础概念1.1 节点度1.2 度分布1.3 邻接矩阵 2 探索图的高级概念2.1 最短路径的关键性2.2 图的直径与平均路径的意义2.3 循环与路径类型的多样性 3 深入探讨图的广泛应用领域3.1 知识图谱的知识管理3.2 图智能在复杂决策中的应用3.3 图数据挖掘与分析的多领域应用…
阅读更多...
5.electron之主进程起一个本地服务

5.electron之主进程起一个本地服务

如果可以实现记得点赞分享&#xff0c;谢谢老铁&#xff5e; Electron是一个使用 JavaScript、HTML 和 CSS 构建桌面应用程序的框架。 Electron 将 Chromium 和 Node.js 嵌入到了一个二进制文件中&#xff0c;因此它允许你仅需一个代码仓库&#xff0c;就可以撰写支持 Windows、…
阅读更多...
Rust开发WASM，WASM Runtime运行

Rust开发WASM，WASM Runtime运行

安装wasm runtime curl https://wasmtime.dev/install.sh -sSf | bash 查看wasmtime的安装路径 安装target rustup target add wasm32-wasi 创建测试工程 cargo new wasm_wasi_demo 编译工程 cargo build --target wasm32-wasi 运行 wasmtime ./target/wasm32-wasi/d…
阅读更多...
小白水平理解面试经典题目LeetCode 20. Valid Parentheses【栈】

小白水平理解面试经典题目LeetCode 20. Valid Parentheses【栈】

20.有效括号 小白渣翻译 给定一个仅包含字符 ‘(’ 、 ‘)’ 、 ‘{’ 、 ‘}’ 、 ‘[’ 和 ‘]’ &#xff0c;判断输入字符串是否有效。 输入字符串在以下情况下有效&#xff1a; 左括号必须由相同类型的括号封闭。 左括号必须按正确的顺序关闭。 每个右括号都有一个对…
阅读更多...
10.0 Zookeeper 权限控制 ACL

10.0 Zookeeper 权限控制 ACL

zookeeper 的 ACL&#xff08;Access Control List&#xff0c;访问控制表&#xff09;权限在生产环境是特别重要的&#xff0c;所以本章节特别介绍一下。 ACL 权限可以针对节点设置相关读写等权限&#xff0c;保障数据安全性。 permissions 可以指定不同的权限范围及角色。 …
阅读更多...
解决IntellIJ Idea内存不足

解决IntellIJ Idea内存不足

突然有一天我在IDEA打开两个项目时&#xff0c;发生了报错&#xff0c;说我内存不足&#xff0c;我这电脑内存16G怎么会内存不足。下面是我的解决方案。 IntelliJ IDEA 报告内存不足的原因通常与以下几个因素有关&#xff1a; 项目规模较大&#xff1a;如果您正在开发的项目非…
阅读更多...
解决“使用Edge浏览器每次鼠标点击会出现一个黑色边框”的问题

解决“使用Edge浏览器每次鼠标点击会出现一个黑色边框”的问题

目录 一 问题描述 二 解决方案 三 方案来源 四 参考资料 & AI工具 一 问题描述 为了方便进行收藏夹同步&#xff0c;开始从Chrome浏览器切换到Edge浏览器。在使用Edge浏览器过程中发现“每次鼠标点击会出现一个黑色边框”&#xff08;效果如下图所示&#xff09;&#…
阅读更多...
7.electron之渲染线程发送事件，主进程监听事件

7.electron之渲染线程发送事件，主进程监听事件

如果可以实现记得点赞分享&#xff0c;谢谢老铁&#xff5e; Electron是一个使用 JavaScript、HTML 和 CSS 构建桌面应用程序的框架。 Electron 将 Chromium 和 Node.js 嵌入到了一个二进制文件中&#xff0c;因此它允许你仅需一个代码仓库&#xff0c;就可以撰写支持 Windows、…
阅读更多...
VSCode无法启动：Waiting for server log...

VSCode无法启动：Waiting for server log...

问题基本情况 [13:30:20.720] > code 1.86.0 (commit 05047486b6df5eb8d44b2ecd70ea3bdf775fd937) [13:30:20.724] > Running ssh connection command... /var/fpwork/reiss/vscdata/server/cplane/.vscode-server/code-05047486b6df5eb8d44b2ecd70ea3bdf775fd937 comman…
阅读更多...
Linux应用 进程间通信之共享内存(System V)

Linux应用 进程间通信之共享内存(System V)

1、定义 System V共享内存是一种在Unix和类Unix操作系统上用于进程间通信的机制。它允许多个进程共享同一块物理内存区域&#xff0c;从而可以在这些进程之间传递数据。 应用场景&#xff1a; 数据共享&#xff1a;多个进程需要共享大量数据&#xff0c;如数据库缓存、图像处…
阅读更多...
k8s-项目部署案例

k8s-项目部署案例

一、容器交付流程 在k8s平台部署项目流程 在K8s部署Java网站项目 DockerFile 如果是http访问&#xff0c;需要在镜像仓库配置可信任IP 三、使用工作负载控制器部署镜像 建议至少配置两个标签 一个是声明项目类型的 一个是项目名称的 继续配置属性 资源配额 健康检查 五、使…
阅读更多...
最新文章
推荐文章

Copyright @ 2022~2023