先总结总结问题
问题1：MX_DCMI_Init();放到 MX_DMA_Init();后
问题2：DMA缓存缓存要放到SRAM中__align(32) uint32_t buffer[65535] __attribute((at(0X24040000)));
问题3：IO复用问题，DCMI数据口可以复用到其他IO口，要注意配置
问题4：摄像头时钟配置，不能过快，也不能过慢，过快采集不过来，过慢JPEG会传一半停止
问题5：上位机字节序，JPG由FF D8开头,FF D9结尾
解决上面5个问题，STM32H7 DCMI就可以轻松使用
由于需要用到摄像头，用IO驱动的话会比较慢，这里使用的STM32H7B0中的DCMI接口，由于DMA用的比较少，在这里卡了3天，期间各种测试，从硬件到软件，接用IO读OV2640，可以读到数据，确定硬件没有问题，DCMI的DMA一直进错误中断Transfer Error Interrupt management
网上说是内存地址问题，DMA不能访问直接访问DTCM，也改成SRAM了，也会进入错误中断
DMA1等都不能访问DTCM
最终发现把 MX_DCMI_Init();放到 MX_DMA_Init();即可正常传输数据
Several peripheral DMA handle pointers point to the same DMA handle.
Be aware that there is only one channel to perform all the requested DMAs.干扰项，删掉就行不用管，我开始还以为这里需要配置什么东西，就保留最上边一行
删完就像这样就可以
缓存放到SRAM放到中
__align(32) uint32_t buffer[65535] __attribute((at(0X24040000)));
开启缓存对于DCMI没有影响，开不开都可以正常运行
static void CPU_CACHE_Enable(void)
{
SCB_EnableICache();//使能I-Cache
SCB_EnableDCache();//使能D-Cache
SCB->CACR|=1<<2; //强制D-Cache透写,如不开启,实际使用中可能遇到各种问题
}
启动采集代码
void StartOV2640()
{int i =0;__HAL_DCMI_ENABLE_IT(&hdcmi, DCMI_IER_FRAME_IE); //使用帧中断memset(buffer, 0, 65535); //把接收BUF清空HAL_DCMI_Start_DMA(&hdcmi, DCMI_MODE_SNAPSHOT, (uint32_t)buffer, 65535); //启动拍照
}void HAL_DCMI_FrameEventCallback(DCMI_HandleTypeDef *hdcmi)
{int i =0;HAL_DCMI_Suspend(hdcmi); // 拍照完成，挂起 DCMIHAL_DCMI_Stop(hdcmi); // 拍照完成，停止 DMA传输int pictureLength = 65535;while (pictureLength > 0) //循环计算出接收的JPEG的大小{if (buffer[pictureLength - 1] != 0x00000000){break;}pictureLength--;}jpeglen = pictureLength * 4;getPicture = 1;
}配置IO也要注意一下D0,D1,D3可以复用到其他IO，一定不要弄错，配置完要对着IO检查一遍，频率使用也很重要，我这里用到的频率如下
单片机主频280M
摄像头主频8M
摄像头分频配置
SCCB_WR_Reg(0XFF,0X00);
SCCB_WR_Reg(0XD3,0XF);
SCCB_WR_Reg(0XFF,0X01);
SCCB_WR_Reg(0X11,0X7);
开启中断
DMA配置，不要修改
NVIC给个优先级
摄像头时钟,这个可以自由发挥，和摄像头分频配置一起可以有多重组合
样张
上位机软件用C#写的，关键部分代码
private const int count = 200 * 1024;
private byte[] buffer = new byte[count];
private int offset = 0;
private int length = 0;
private bool isData = false;
public void DataCallBack(Object sender, SerialDataReceivedEventArgs e)
{try{if (isData==false){var data = _serialPort.ReadLine();if (!string.IsNullOrEmpty(data) && data.Length > 0){if(data.IndexOf("jpeg data size:")>=0){var lengthStr = data.Split(':');if(lengthStr != null && lengthStr.Length>1){length = int.Parse(lengthStr[1]);if (length > count){}else{isData = true;}}Console.WriteLine(data);}else{Console.WriteLine(data);}}}else{int thisLength = _serialPort.Read(buffer, offset, length - offset);offset = offset + thisLength;if(offset >= length){Console.WriteLine($"接收完一张图片,offset:{offset},length:{length}");string path = Directory.GetCurrentDirectory();DirectoryCheak(path + "\\out\\");bool ispictrue = false;if (false)//bmp{//bmpif (false){//RGB888System.Drawing.Bitmap formBitmap = new System.Drawing.Bitmap(96, 96);for (int i = 0; i < 96; i++){for (int j = 0; j < 96; j++){formBitmap.SetPixel(i, j, System.Drawing.Color.FromArgb(buffer[i * j + j], buffer[i * j + j + 1], buffer[i * j + j + 2]));}}formBitmap.Save(path + "\\out\\" + DateTime.Now.ToString("yyyyMMdd-HHmmss.fff") + ".bmp");}else{//RGB565List<UInt16> data = new List<UInt16>();for (int i = 0; i < length; i += 2){UInt16 thisData = (UInt16)((buffer[i] << 8) | buffer[i + 1]); ;data.Add(thisData);}System.Drawing.Bitmap formBitmap = new System.Drawing.Bitmap(96, 96);for (int i = 0; i < 96; i++){for (int j = 0; j < 96; j++){byte red = (byte)((data[i * j + j] >> 11) << 3); //5位 移动3位byte green = (byte)(((data[i * j + j] << 5) >> 10) << 2); //6位 移动2位byte blue = (byte)(((data[i * j + j] << 11) >> 11) << 3); //5位 移动3位 formBitmap.SetPixel(i, j, System.Drawing.Color.FromArgb(red, green, blue));}}formBitmap.Save(path + "\\out\\" + DateTime.Now.ToString("yyyyMMdd-HHmmss.fff") + ".bmp");}}else{List<byte> data = new List<byte>();for (int i = 1; i < length; i++){//Console.WriteLine($"i:{i},length:{length}");if (ispictrue == true){data.Add(buffer[i]);}else if ((buffer[i - 1] == 0xFF) && (buffer[i] == 0xd8)){ispictrue = true;data.Add(buffer[i - 1]);data.Add(buffer[i]);}//if((buffer[i - 1] == 0xFF) && (buffer[i] == 0xd9))//{// data.Add(buffer[i - 1]);// data.Add(buffer[i]);// ispictrue = false;// break;//}}WriteFileUsingBinaryWriter(path + "\\out\\", DateTime.Now.ToString("yyyyMMdd-HHmmss.fff") + ".jpg", data.ToArray(), data.Count());}offset = 0;length = 0;isData = false;}}}catch (Exception ex){Console.WriteLine("串口解析出错" + ex.ToString());}
}public void WriteFileUsingBinaryWriter(string path,string fileName,byte[] data,int length)
{var outputStream = File.Create(path + fileName);using (var writer = new BinaryWriter(outputStream)){writer.Write(data, 0, length);}
}/// <summary>
/// 效验文件夹，没有就创建
/// </summary>
private void DirectoryCheak(string path)
{if (false == System.IO.Directory.Exists(path)){System.IO.Directory.CreateDirectory(path);}
}private void OpenSerialPort_Click(object sender, RoutedEventArgs e)
{try{_serialPort = new SerialPort();_serialPort.PortName = SerialPort.Text;_serialPort.BaudRate = int.Parse(SerialBaudRate.Text);_serialPort.Parity = Parity.None;_serialPort.DataBits = 8;_serialPort.StopBits = StopBits.One;_serialPort.ReadTimeout = 10000;//单位毫秒_serialPort.WriteTimeout = 10000;//单位毫秒//设置串口字节接收缓冲值，通常为1//获得接收后，触发事件处理_serialPort.ReceivedBytesThreshold = 1;_serialPort.DataReceived += new SerialDataReceivedEventHandler(DataCallBack);_serialPort.Open();//Console.WriteLine(serialPort.IsOpen.ToString());OpenSerialPort.IsEnabled = false;CloseSerialPort.IsEnabled = true;}catch (Exception ex){MessageBox.Show("串口打开失败" + ex.ToString());//System.Environment.Exit(0);//退出应用程序}
}private void CloseSerialPort_Click(object sender, RoutedEventArgs e)
{try{if (_serialPort.IsOpen == true){_serialPort.Close();OpenSerialPort.IsEnabled = true;CloseSerialPort.IsEnabled = false;}}catch (Exception ex){MessageBox.Show("串口关闭失败" + ex.ToString());System.Environment.Exit(0);//退出应用程序}
}单片机关键部分代码
/* USER CODE BEGIN Header */
/********************************************************************************* @file dcmi.c* @brief This file provides code for the configuration* of the DCMI instances.******************************************************************************* @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 "dcmi.h"/* USER CODE BEGIN 0 */
#include <string.h>
#include <stdio.h>__align(32) uint32_t buffer[65535] __attribute((at(0X24040000)));unsigned char getPicture = 0;
unsigned int jpeglen = 0;
//unsigned int recvOk = 0;/* USER CODE END 0 */DCMI_HandleTypeDef hdcmi;
DMA_HandleTypeDef hdma_dcmi_pssi;/* DCMI init function */
void MX_DCMI_Init(void)
{/* USER CODE BEGIN DCMI_Init 0 *//* USER CODE END DCMI_Init 0 *//* USER CODE BEGIN DCMI_Init 1 *//* USER CODE END DCMI_Init 1 */hdcmi.Instance = DCMI;hdcmi.Init.SynchroMode = DCMI_SYNCHRO_HARDWARE;hdcmi.Init.PCKPolarity = DCMI_PCKPOLARITY_RISING;hdcmi.Init.VSPolarity = DCMI_VSPOLARITY_LOW;hdcmi.Init.HSPolarity = DCMI_HSPOLARITY_LOW;hdcmi.Init.CaptureRate = DCMI_CR_ALL_FRAME;hdcmi.Init.ExtendedDataMode = DCMI_EXTEND_DATA_8B;hdcmi.Init.JPEGMode = DCMI_JPEG_ENABLE;hdcmi.Init.ByteSelectMode = DCMI_BSM_ALL;hdcmi.Init.ByteSelectStart = DCMI_OEBS_ODD;hdcmi.Init.LineSelectMode = DCMI_LSM_ALL;hdcmi.Init.LineSelectStart = DCMI_OELS_ODD;if (HAL_DCMI_Init(&hdcmi) != HAL_OK){Error_Handler();}/* USER CODE BEGIN DCMI_Init 2 *///printf("MX_DCMI_Init ok\r\n");/* USER CODE END DCMI_Init 2 */}void HAL_DCMI_MspInit(DCMI_HandleTypeDef* dcmiHandle)
{GPIO_InitTypeDef GPIO_InitStruct = {0};if(dcmiHandle->Instance==DCMI){/* USER CODE BEGIN DCMI_MspInit 0 *///printf("if(dcmiHandle->Instance==DCMI)\r\n");/* USER CODE END DCMI_MspInit 0 *//* DCMI clock enable */__HAL_RCC_DCMI_CLK_ENABLE();__HAL_RCC_GPIOE_CLK_ENABLE();__HAL_RCC_GPIOA_CLK_ENABLE();__HAL_RCC_GPIOB_CLK_ENABLE();__HAL_RCC_GPIOD_CLK_ENABLE();/**DCMI GPIO ConfigurationPE4 ------> DCMI_D4PE5 ------> DCMI_D6PE6 ------> DCMI_D7PA4 ------> DCMI_HSYNCPA6 ------> DCMI_PIXCLKPB13 ------> DCMI_D2PA9 ------> DCMI_D0PA10 ------> DCMI_D1PD3 ------> DCMI_D5PB7 ------> DCMI_VSYNCPE1 ------> DCMI_D3*/GPIO_InitStruct.Pin = GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_1;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;GPIO_InitStruct.Alternate = GPIO_AF13_DCMI;HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);GPIO_InitStruct.Pin = GPIO_PIN_4|GPIO_PIN_6|GPIO_PIN_9|GPIO_PIN_10;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;GPIO_InitStruct.Alternate = GPIO_AF13_DCMI;HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);GPIO_InitStruct.Pin = GPIO_PIN_13|GPIO_PIN_7;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;GPIO_InitStruct.Alternate = GPIO_AF13_DCMI;HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);GPIO_InitStruct.Pin = GPIO_PIN_3;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;GPIO_InitStruct.Alternate = GPIO_AF13_DCMI;HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);/* DCMI DMA Init *//* DCMI_PSSI Init */hdma_dcmi_pssi.Instance = DMA1_Stream0;hdma_dcmi_pssi.Init.Request = DMA_REQUEST_DCMI_PSSI;hdma_dcmi_pssi.Init.Direction = DMA_PERIPH_TO_MEMORY;hdma_dcmi_pssi.Init.PeriphInc = DMA_PINC_DISABLE;hdma_dcmi_pssi.Init.MemInc = DMA_MINC_ENABLE;hdma_dcmi_pssi.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;hdma_dcmi_pssi.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;hdma_dcmi_pssi.Init.Mode = DMA_NORMAL;hdma_dcmi_pssi.Init.Priority = DMA_PRIORITY_VERY_HIGH;hdma_dcmi_pssi.Init.FIFOMode = DMA_FIFOMODE_ENABLE;hdma_dcmi_pssi.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_HALFFULL;hdma_dcmi_pssi.Init.MemBurst = DMA_MBURST_SINGLE;hdma_dcmi_pssi.Init.PeriphBurst = DMA_PBURST_SINGLE;if (HAL_DMA_Init(&hdma_dcmi_pssi) != HAL_OK){Error_Handler();}/* Several peripheral DMA handle pointers point to the same DMA handle.Be aware that there is only one channel to perform all the requested DMAs. */__HAL_LINKDMA(dcmiHandle,DMA_Handle,hdma_dcmi_pssi);/* DCMI interrupt Init */HAL_NVIC_SetPriority(DCMI_PSSI_IRQn, 2, 0);HAL_NVIC_EnableIRQ(DCMI_PSSI_IRQn);/* USER CODE BEGIN DCMI_MspInit 1 */HAL_GPIO_WritePin(GPIOC,GPIO_PIN_14,GPIO_PIN_SET);HAL_Delay(100);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_14,GPIO_PIN_RESET);//printf("HAL_DCMI_MspInit ok\r\n");/* USER CODE END DCMI_MspInit 1 */}
}void HAL_DCMI_MspDeInit(DCMI_HandleTypeDef* dcmiHandle)
{if(dcmiHandle->Instance==DCMI){/* USER CODE BEGIN DCMI_MspDeInit 0 *//* USER CODE END DCMI_MspDeInit 0 *//* Peripheral clock disable */__HAL_RCC_DCMI_CLK_DISABLE();/**DCMI GPIO ConfigurationPE4 ------> DCMI_D4PE5 ------> DCMI_D6PE6 ------> DCMI_D7PA4 ------> DCMI_HSYNCPA6 ------> DCMI_PIXCLKPB13 ------> DCMI_D2PA9 ------> DCMI_D0PA10 ------> DCMI_D1PD3 ------> DCMI_D5PB7 ------> DCMI_VSYNCPE1 ------> DCMI_D3*/HAL_GPIO_DeInit(GPIOE, GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_1);HAL_GPIO_DeInit(GPIOA, GPIO_PIN_4|GPIO_PIN_6|GPIO_PIN_9|GPIO_PIN_10);HAL_GPIO_DeInit(GPIOB, GPIO_PIN_13|GPIO_PIN_7);HAL_GPIO_DeInit(GPIOD, GPIO_PIN_3);/* DCMI DMA DeInit */HAL_DMA_DeInit(dcmiHandle->DMA_Handle);/* DCMI interrupt Deinit */HAL_NVIC_DisableIRQ(DCMI_PSSI_IRQn);/* USER CODE BEGIN DCMI_MspDeInit 1 */HAL_GPIO_WritePin(GPIOC,GPIO_PIN_14,GPIO_PIN_SET);HAL_Delay(100);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_14,GPIO_PIN_RESET);printf("HAL_DCMI_MspDeInit ok\r\n");/* USER CODE END DCMI_MspDeInit 1 */}
}/* USER CODE BEGIN 1 */void StartOV2640()
{int i =0;__HAL_DCMI_ENABLE_IT(&hdcmi, DCMI_IER_FRAME_IE); //使用帧中断memset(buffer, 0, 65535); //把接收BUF清空HAL_DCMI_Start_DMA(&hdcmi, DCMI_MODE_SNAPSHOT, (uint32_t)buffer, 65535); //启动拍照
}void HAL_DCMI_FrameEventCallback(DCMI_HandleTypeDef *hdcmi)
{int i =0;HAL_DCMI_Suspend(hdcmi); // 拍照完成，挂起 DCMIHAL_DCMI_Stop(hdcmi); // 拍照完成，停止 DMA传输int pictureLength = 65535;while (pictureLength > 0) //循环计算出接收的JPEG的大小{if (buffer[pictureLength - 1] != 0x00000000){break;}pictureLength--;}jpeglen = pictureLength * 4;getPicture = 1;
}
/* USER CODE END 1 */
单片机代码
/* 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"
#include "adc.h"
#include "dcmi.h"
#include "dma.h"
#include "rtc.h"
#include "usart.h"
#include "gpio.h"/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h>
#include "ov2640.h"
#include "ov5640.h"
#include <string.h>
/* 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 */#define OV2640_JPEG_WIDTH 1600 //JPEG拍照的宽度
#define OV2640_JPEG_HEIGHT 1200 //JPEG拍照的高度#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
PUTCHAR_PROTOTYPE
{USART1->TDR = ch;while(!(USART1->ISR& USART_ISR_TXE_TXFNF_Msk)) {;}return ch;
}static void CPU_CACHE_Enable(void)
{SCB_EnableICache();//使能I-CacheSCB_EnableDCache();//使能D-Cache SCB->CACR|=1<<2; //强制D-Cache透写,如不开启,实际使用中可能遇到各种问题
}void Send(uint8_t *pData)
{uint32_t i = 0;printf("jpeg data size:%d\r\n",jpeglen);//串口打印JPEG文件大小 HAL_Delay(1000); for(i = 0;i < jpeglen;i++){//printf("%02x\t",pData[i]);printf("%c",pData[i]);}HAL_Delay(1000); printf("\r\n");
}/* USER CODE END 0 *//*** @brief The application entry point.* @retval int*/
int main(void)
{/* USER CODE BEGIN 1 */uint32_t i = 0;uint32_t index = 1;//CPU_CACHE_Enable();/* 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 */HAL_Delay(5000);//__enable_irq();/* USER CODE END SysInit *//* Initialize all configured peripherals */MX_GPIO_Init();MX_RTC_Init();MX_USART1_UART_Init();MX_USART2_UART_Init();MX_DMA_Init();MX_ADC1_Init();MX_USART3_UART_Init();/* USER CODE BEGIN 2 */HAL_Delay(100);MX_DCMI_Init();HAL_GPIO_WritePin(GPIOA,GPIO_PIN_7,GPIO_PIN_SET);HAL_GPIO_WritePin(GPIOB,GPIO_PIN_6,GPIO_PIN_SET);HAL_Delay(1000);// HAL_DCMI_DeInit(&hdcmi);
// PY_DCMI_Full_Init();/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){printf("OV2640 初始化!cam:%d\r\n",index);while(OV2640_Init(index)) {printf("OV2640 错误!cam:%d\r\n",index);}printf("OV2640 成功!cam:%d\r\n",index);HAL_Delay(1000);if(1){OV2640_JPEG_Mode(); //切换为JPEG模式 printf("切换为JPEG模式 !\r\n");OV2640_OutSize_Set(OV2640_JPEG_WIDTH,OV2640_JPEG_HEIGHT); printf("设置图像大小 !\r\n");SCCB_WR_Reg(0XFF,0X00);SCCB_WR_Reg(0XD3,0X10);SCCB_WR_Reg(0XFF,0X01);SCCB_WR_Reg(0X11,0X8); }if(0){OV2640_RGB565_Mode(); //RGB565模式printf("RGB565模式 !\r\n");OV2640_OutSize_Set(OV2640_JPEG_WIDTH,OV2640_JPEG_HEIGHT); printf("设置图像大小 !\r\n");SCCB_WR_Reg(0XFF,0X00); SCCB_WR_Reg(0XD3,0X12); //设置PCLK分频SCCB_WR_Reg(0XFF,0X01);SCCB_WR_Reg(0X11,0X1); //设置CLK分频 }printf("开始工作\r\n");HAL_Delay(100);//Get_Photo();//DCMI_Start();StartOV2640();HAL_Delay(1000); while(1){if(getPicture==1){Send((uint8_t *)buffer);break;}else{//printf("adc start\r\n");//GetValue();//printf("adc end\r\n");HAL_Delay(10);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_14,GPIO_PIN_SET);HAL_Delay(10);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_14,GPIO_PIN_RESET);} //printf("jpeg haven't finished\r\n"); } if(index>3){index = 1;}else{index++;}/* 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};/** Supply configuration update enable*/HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);/** Configure the main internal regulator output voltage*/__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}/** Macro to configure the PLL clock source*/__HAL_RCC_PLL_PLLSOURCE_CONFIG(RCC_PLLSOURCE_HSI);/** Initializes the RCC Oscillators according to the specified parameters* in the RCC_OscInitTypeDef structure.*/RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI;RCC_OscInitStruct.HSIState = RCC_HSI_DIV1;RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;RCC_OscInitStruct.LSIState = RCC_LSI_ON;RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;RCC_OscInitStruct.PLL.PLLM = 4;RCC_OscInitStruct.PLL.PLLN = 35;RCC_OscInitStruct.PLL.PLLP = 2;RCC_OscInitStruct.PLL.PLLQ = 2;RCC_OscInitStruct.PLL.PLLR = 2;RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_3;RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;RCC_OscInitStruct.PLL.PLLFRACN = 0;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_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1;RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7) != HAL_OK){Error_Handler();}HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSI, RCC_MCODIV_8);
}/* 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 */printf("Error_Handler\r\n");/* User can add his own implementation to report the HAL error return state */__disable_irq();HAL_Delay(1000); 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 */
