永兴县网站建设服务商,app开发技术方案,ftp网站地图怎么做,建设网站开发公司stm32H库的内部FLASH读写操作与结构体数组数据写入与读取 1.软硬件准备2.关于STM32的Flash的一些说明3.实验结果 参考博主-STM32系列(HAL库)——内部FLASH读写实验
1.软硬件准备
软件#xff1a;CubeMX、SSCOM#xff08;串口调试助手#xff09;
硬件#xff1a;SMT32F… stm32H库的内部FLASH读写操作与结构体数组数据写入与读取 1.软硬件准备2.关于STM32的Flash的一些说明3.实验结果 参考博主-STM32系列(HAL库)——内部FLASH读写实验
1.软硬件准备
软件CubeMX、SSCOM串口调试助手
硬件SMT32F103C8T6
2.关于STM32的Flash的一些说明
(1)STM32根据闪存Flash容量的大小将Flash分为每页1K字节 或 每页2K字节。超过256K容量的每页为2K字节。对于本次使用的SMT32F103C8T6其容量为64K则内部分为每页1K字节
(2)SMT32的Flash起始地址为0X0800 0000 。本次使用的STM32F103C8T6的FLASH范围是0X08000000-0X0800FFFF。示意图如下
(3)STM32运行代码从地址0X0800 0000开始所以我们使用的Flash空间开始地址应该往后偏移不然就会将程序部分覆盖掉。
(4)Flash的写操作需要擦除一整页后再重新写入不能对特定处进行修改写的时候可以分多次写入
(5)擦写次数较多数据的不建议使用内部Flash进行存储手册中给的数据是擦写1W次
3.STM32配置及主要代码 CubeMX简单配置一个串口1即可usart.c添加打印函数即
#include stdio.h/*********************************************************
*
*重定义 fputc 函数
*
*********************************************************/
int fputc(int ch,FILE *f)
{HAL_UART_Transmit (huart1 ,(uint8_t *)ch,1,HAL_MAX_DELAY );return ch;
}main.c 创建一个结构体FuyuState结构体下的变量随便赋值后经过FLASH写入后读出出该地址的值赋值给另外一个数值datatemp再通过打印输出查看是否正确
/* USER CODE BEGIN Header */
/********************************************************************************* file : main.c* brief : Main program body******************************************************************************* attention** h2centercopy; Copyright (c) 2022 STMicroelectronics.* All rights reserved./center/h2** 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
#include usart.h
#include gpio.h/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include stmflash.h
#include stdio.h
/* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
const u8 TEXT_Buffer_1[]{STM32 FLASH TEST_1};//要写入到STM32 FLASH的字符串数组
const u8 TEXT_Buffer_2[]{STM32 FLASH TEST_2};//要写入到STM32 FLASH的字符串数组
#define SIZE sizeof(TEXT_Buffer_1) //数组长度/* USER CODE END PTD *//* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD *//* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
typedef __packed struct
{u16 Set_Temperature; //设置温度 保持温度u16 SetTime; //设置时间u16 CurrentTemp[3]; //当前温度 u16 ProtectTemp[3]; //保护温度u16 Speed;u32 RemainTime;u16 Current;u16 PWM_Time;u8 ActiveState;
} FuyuState,*pFuyuState;FuyuState g_FuyuState {0};/* 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 */
u16 datatemp[20]; //Flash读取缓存数组
u16 *pdatatemp; //数组指针 /* USER CODE END 1 */
u8 i;/* 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_USART1_UART_Init();/* USER CODE BEGIN 2 */printf(串口打印正常!\r\n);//结构体变量赋值g_FuyuState.Set_Temperature 50; //设置温度 保持温度g_FuyuState.SetTime 2 ; g_FuyuState.CurrentTemp[0] 3 ; g_FuyuState.CurrentTemp[1] 4 ; g_FuyuState.CurrentTemp[2] 5 ; g_FuyuState.ProtectTemp[0] 6 ; g_FuyuState.ProtectTemp[1] 7 ; g_FuyuState.ProtectTemp[2] 8 ; g_FuyuState.Speed 5;g_FuyuState.RemainTime 6;g_FuyuState.Current 7;g_FuyuState.PWM_Time 8;g_FuyuState.ActiveState 9;STMFLASH_Write(FLASH_SAVE_ADDR,(uint16_t*)g_FuyuState,sizeof(g_FuyuState));//第一次写HAL_Delay(50);STMFLASH_Read(FLASH_SAVE_ADDR,(uint16_t*)datatemp,sizeof(g_FuyuState));for(i0;isizeof(g_FuyuState);i){printf(datatemp%d:%d\r\n,i,datatemp[i]); } //STMFLASH_Write(FLASH_SAVE_ADDR,(u16*)TEXT_Buffer_1,SIZE);//第一次写读
//STMFLASH_Read(FLASH_SAVE_ADDR,(u16*)datatemp,SIZE);
//printf(%s\r\n,p);//STMFLASH_Write(FLASH_SAVE_ADDR,(u16*)TEXT_Buffer_2,SIZE);//第二次写读
//STMFLASH_Read(FLASH_SAVE_ADDR,(u16*)datatemp,SIZE);
//printf(%s\r\n,p);/* 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 *//************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
stmflash.h
#ifndef __STMFLASH_H__
#define __STMFLASH_H__
#include main.h
//数据类型宏定义
#define u8 uint8_t
#define u16 uint16_t
#define u32 uint32_t
#define __IO volatile
typedef __IO uint16_t vu16;//用户根据自己的需要设置
#define STM32_FLASH_SIZE 64 //所选STM32的FLASH容量大小(单位为K)#if STM32_FLASH_SIZE 256 //设置扇区大小#define STM_SECTOR_SIZE 1024 //1K字节#else #define STM_SECTOR_SIZE 2048 //2K字节#endif
#define STM32_FLASH_BASE 0x08000000 //STM32 FLASH的起始地址
#define FLASH_SAVE_ADDR STM32_FLASH_BASESTM_SECTOR_SIZE*62 //写Flash的地址这里从倒数第二页开始
#define STM32_FLASH_WREN 1 //使能FLASH写入(0不是能;1使能)
#define FLASH_WAITETIME 50000 //FLASH等待超时时间u8 STMFLASH_GetStatus(void); //获得状态
u8 STMFLASH_WaitDone(u16 time); //等待操作结束
u8 STMFLASH_ErasePage(u32 paddr); //擦除页
u8 STMFLASH_WriteHalfWord(u32 faddr, u16 dat);//写入半字
u16 STMFLASH_ReadHalfWord(u32 faddr); //读出半字
void STMFLASH_WriteLenByte(u32 WriteAddr,u32 DataToWrite,u16 Len); //指定地址开始写入指定长度的数据
u32 STMFLASH_ReadLenByte(u32 ReadAddr,u16 Len); //指定地址开始读取指定长度数据
void STMFLASH_Write(u32 WriteAddr,u16 *pBuffer,u16 NumToWrite); //从指定地址开始写入指定长度的数据
void STMFLASH_Read(u32 ReadAddr,u16 *pBuffer,u16 NumToRead); //从指定地址开始读出指定长度的数据
void Flash_PageErase(uint32_t PageAddress); //扇区擦除#endif
stmflash.c
#include stmflash.hFLASH_ProcessTypeDef p_Flash;
u16 STMFLASH_BUF[STM_SECTOR_SIZE/2]; //缓存数组/*********************************************************************************** 函数功能: 读取指定地址的半字(16位数据) * 输入参数: faddr读地址* 返 回 值: 对应数据* 说 明 */
u16 STMFLASH_ReadHalfWord(u32 faddr)
{return *(vu16*)faddr;
}#if STM32_FLASH_WREN //如果使能了写 /*********************************************************************************** 函数功能:不检查的写入* 输入参数: WriteAddr:起始地址、pBuffer:数据指针、NumToWrite:半字(16位)数 * 返 回 值: 无* 说 明 */
void STMFLASH_Write_NoCheck(u32 WriteAddr,u16 *pBuffer,u16 NumToWrite)
{ u16 i;for(i0;iNumToWrite;i){HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD,WriteAddr,pBuffer[i]);WriteAddr2;//地址增加2.}
} /*********************************************************************************** 函数功能:从指定地址开始写入指定长度的数据* 输入参数:WriteAddr:起始地址(此地址必须为2的倍数!!)、pBuffer:数据指针、NumToWrite半字(16位)数(就是要写入的16位数据的个数.)* 返 回 值: 无* 说 明 */
void STMFLASH_Write(u32 WriteAddr,u16 *pBuffer,u16 NumToWrite)
{u32 secpos; //扇区地址u16 secoff; //扇区内偏移地址(16位字计算)u16 secremain; //扇区内剩余地址(16位字计算) u16 i; u32 offaddr; //去掉0X08000000后的地址if(WriteAddrSTM32_FLASH_BASE||(WriteAddr(STM32_FLASH_BASE1024*STM32_FLASH_SIZE)))return;//非法地址HAL_FLASH_Unlock(); //解锁offaddrWriteAddr-STM32_FLASH_BASE; //实际偏移地址.secposoffaddr/STM_SECTOR_SIZE; //扇区地址 0~64 for STM32F103C8T6secoff(offaddr%STM_SECTOR_SIZE)/2; //在扇区内的偏移(2个字节为基本单位.)secremainSTM_SECTOR_SIZE/2-secoff; //扇区剩余空间大小 if(NumToWritesecremain)secremainNumToWrite;//不大于该扇区范围while(1) { STMFLASH_Read(secpos*STM_SECTOR_SIZESTM32_FLASH_BASE,STMFLASH_BUF,STM_SECTOR_SIZE/2);//读出整个扇区的内容for(i0;isecremain;i) //校验数据{if(STMFLASH_BUF[secoffi]!0XFFFF)break;//需要擦除 }if(isecremain) //需要擦除{Flash_PageErase(secpos*STM_SECTOR_SIZESTM32_FLASH_BASE); //擦除这个扇区FLASH_WaitForLastOperation(FLASH_WAITETIME); //等待上次操作完成CLEAR_BIT(FLASH-CR, FLASH_CR_PER); //清除CR寄存器的PER位此操作应该在FLASH_PageErase()中完成//但是HAL库里面并没有做应该是HAL库bugfor(i0;isecremain;i)//复制{STMFLASH_BUF[isecoff]pBuffer[i]; }STMFLASH_Write_NoCheck(secpos*STM_SECTOR_SIZESTM32_FLASH_BASE,STMFLASH_BUF,STM_SECTOR_SIZE/2);//写入整个扇区 }else {FLASH_WaitForLastOperation(FLASH_WAITETIME); //等待上次操作完成STMFLASH_Write_NoCheck(WriteAddr,pBuffer,secremain);//写已经擦除了的,直接写入扇区剩余区间. }if(NumToWritesecremain)break;//写入结束了else//写入未结束{secpos; //扇区地址增1secoff0; //偏移位置为0 pBuffersecremain; //指针偏移WriteAddrsecremain*2; //写地址偏移(16位数据地址,需要*2) NumToWrite-secremain; //字节(16位)数递减if(NumToWrite(STM_SECTOR_SIZE/2))secremainSTM_SECTOR_SIZE/2;//下一个扇区还是写不完else secremainNumToWrite;//下一个扇区可以写完了} }; HAL_FLASH_Lock(); //上锁
}
#endif/*********************************************************************************** 函数功能:从指定地址开始读出指定长度的数据* 输入参数:ReadAddr:起始地址、pBuffer:数据指针、NumToWrite:半字(16位)数* 返 回 值: 无* 说 明 */
void STMFLASH_Read(u32 ReadAddr,u16 *pBuffer,u16 NumToRead)
{u16 i;for(i0;iNumToRead;i){pBuffer[i]STMFLASH_ReadHalfWord(ReadAddr);//读取2个字节.ReadAddr2;//偏移2个字节. }
}/*********************************************************************************** 函数功能:擦除扇区* 输入参数:PageAddress:擦除扇区地址* 返 回 值: 无* 说 明 */
void Flash_PageErase(uint32_t PageAddress)
{/* Clean the error context */p_Flash.ErrorCode HAL_FLASH_ERROR_NONE;#if defined(FLASH_BANK2_END)if(PageAddress FLASH_BANK1_END){ /* Proceed to erase the page */SET_BIT(FLASH-CR2, FLASH_CR2_PER);WRITE_REG(FLASH-AR2, PageAddress);SET_BIT(FLASH-CR2, FLASH_CR2_STRT);}else{
#endif /* FLASH_BANK2_END *//* Proceed to erase the page */SET_BIT(FLASH-CR, FLASH_CR_PER);WRITE_REG(FLASH-AR, PageAddress);SET_BIT(FLASH-CR, FLASH_CR_STRT);
#if defined(FLASH_BANK2_END)}
#endif /* FLASH_BANK2_END */}
3.实验结果
