stm32 模拟eeprom的使用flash读写数据的程序
STM32是一款基于ARM Cortex-M内核的微控制器，广泛应用于嵌入式系统设计中。在许多应用中，我们可能需要一种持久性的存储方案来保存数据，即使在电源关闭后也能保留这些数据。这时，我们可以利用STM32的内部Flash来模拟EEPROM的功能，因为EEPROM通常具有多次擦写能力，但成本较高且容量有限。本文将详细介绍如何使用STM32的Flash进行模拟EEPROM的数据读写。
了解STM32的Flash特性至关重要。STM32的Flash存储器是其非易失性内存的一部分，它可以在断电后保持数据，且可以进行编程和擦除操作。Flash的编程和擦除有不同的级别：页编程（通常几百字节）和块擦除（几千到几万字节）。因此，模拟EEPROM时，我们需要考虑这些限制，避免频繁的大范围擦除操作。
模拟EEPROM的基本思路是分配一段连续的Flash区域作为虚拟EEPROM空间，并维护一个映射表来跟踪每个存储位置的状态。以下是一些关键步骤：
1. **初始化**：设置Flash操作所需的预处理，如使能Flash接口、设置等待状态等。同时，确定模拟EEPROM的起始地址和大小，以及映射表的存储位置。
2. **数据读取**：当需要读取数据时，首先检查映射表中对应地址的状态。如果该位置未被使用，可以读取Flash中的原始数据；如果已使用，则直接返回缓存中的数据。
3. **数据写入**：在写入数据前，先对比新旧数据，如果相同则无需写入。如果不同，找到尚未使用的Flash页进行写入，更新映射表记录。如果所有页面都被使用，可以选择最旧的页面进行擦除并重写。注意，为了减少擦除次数，可以采用“写入覆盖”策略，即在写入新数据时，只替换旧数据的部分，而不是整个页。
4. **错误处理**：在编程和擦除过程中，要处理可能出现的错误，如编程错误、超时等。确保有适当的错误恢复机制。
5. **备份与恢复**：为了提高系统的健壮性，可以在启动时检查映射表的完整性，并在必要时恢复已知的合法数据。
压缩包中的“Flash存储数据程序”可能包含以下文件：
- EEPROM模拟的C源代码：实现上述步骤的函数，包括初始化、读写操作等。
- 示例应用程序：展示如何在实际项目中调用这些函数，存储和读取示例数据。
- 配置文件：如头文件，定义Flash分区、映射表的大小和位置等。
- 编译脚本或Makefile：用于编译和烧录程序到STM32开发板。
通过这样的方法，开发者可以在不增加额外硬件成本的前提下，利用STM32的Flash高效地实现模拟EEPROM功能，满足对小容量、低频次写入需求的应用场景。在实际工程中，这种技术常用于存储配置参数、计数器或者设备序列号等数据。
文件下载
资源详情
[{"title":"（ 86 个子文件 422KB ） stm32 模拟eeprom的使用flash读写数据的程序","children":[{"title":"Flash存储数据程序","children":[{"title":"Object.Opt <span style='color:#111;'> 1.62KB </span>","children":null,"spread":false},{"title":"App","children":[{"title":"main.c <span style='color:#111;'> 7.60KB </span>","children":null,"spread":false}],"spread":true},{"title":"Object_Uv2.Bak <span style='color:#111;'> 2.87KB </span>","children":null,"spread":false},{"title":"output","children":[{"title":"Flash.axf <span style='color:#111;'> 83.27KB </span>","children":null,"spread":false},{"title":"stm32f10x_flash.crf <span style='color:#111;'> 29.46KB </span>","children":null,"spread":false},{"title":"cortexm3_macro.o <span style='color:#111;'> 2.31KB </span>","children":null,"spread":false},{"title":"stm32f10x_rcc.o <span style='color:#111;'> 80.01KB </span>","children":null,"spread":false},{"title":"Flash.hex <span style='color:#111;'> 7.32KB </span>","children":null,"spread":false},{"title":"main.d <span style='color:#111;'> 1.08KB </span>","children":null,"spread":false},{"title":"Flash.htm <span style='color:#111;'> 42.94KB </span>","children":null,"spread":false},{"title":"stm32f10x_flash.d <span style='color:#111;'> 333B </span>","children":null,"spread":false},{"title":"Flash.lnp <span style='color:#111;'> 432B </span>","children":null,"spread":false},{"title":"stm32f10x_gpio.o <span style='color:#111;'> 61.91KB </span>","children":null,"spread":false},{"title":"STM32F10x.o <span style='color:#111;'> 5.11KB </span>","children":null,"spread":false},{"title":"stm32f10x_usart.d <span style='color:#111;'> 386B </span>","children":null,"spread":false},{"title":"stm32f10x_flash.o <span style='color:#111;'> 65.73KB </span>","children":null,"spread":false},{"title":"stm32f10x_usart.o <span style='color:#111;'> 74.47KB </span>","children":null,"spread":false},{"title":"main.crf <span style='color:#111;'> 122.55KB </span>","children":null,"spread":false},{"title":"stm32f10x_gpio.crf <span style='color:#111;'> 34.38KB </span>","children":null,"spread":false},{"title":"stm32f10x_usart.crf <span style='color:#111;'> 36.97KB </span>","children":null,"spread":false},{"title":"Flash.sct <span style='color:#111;'> 479B </span>","children":null,"spread":false},{"title":"Flash.tra <span style='color:#111;'> 1.39KB </span>","children":null,"spread":false},{"title":"stm32f10x_gpio.d <span style='color:#111;'> 377B </span>","children":null,"spread":false},{"title":"stm32f10x_rcc.crf <span style='color:#111;'> 33.52KB </span>","children":null,"spread":false},{"title":"main.o <span style='color:#111;'> 135.86KB </span>","children":null,"spread":false},{"title":"Flash.plg <span style='color:#111;'> 204B </span>","children":null,"spread":false},{"title":"stm32f10x_rcc.d <span style='color:#111;'> 317B </span>","children":null,"spread":false}],"spread":false},{"title":"STM32_LIB","children":null,"spread":false},{"title":"List","children":[{"title":"LED_Flah.map <span style='color:#111;'> 51.49KB </span>","children":null,"spread":false},{"title":"320240DispMode.map <span style='color:#111;'> 41.59KB </span>","children":null,"spread":false},{"title":"Flash.map <span style='color:#111;'> 51.49KB </span>","children":null,"spread":false},{"title":"PLC.map <span style='color:#111;'> 42.50KB </span>","children":null,"spread":false},{"title":"STM32F10x.lst <span style='color:#111;'> 37.18KB </span>","children":null,"spread":false},{"title":"example.map <span style='color:#111;'> 42.42KB </span>","children":null,"spread":false},{"title":"cortexm3_macro.lst <span style='color:#111;'> 24.66KB </span>","children":null,"spread":false}],"spread":true},{"title":"Object_Object.dep <span style='color:#111;'> 3.99KB </span>","children":null,"spread":false},{"title":"CPU_LIB","children":[{"title":"stm32f10x_wwdg.h <span style='color:#111;'> 2.69KB </span>","children":null,"spread":false},{"title":"stm32f10x_tim1.c <span style='color:#111;'> 110.98KB </span>","children":null,"spread":false},{"title":"stm32f10x_spi.h <span style='color:#111;'> 9.21KB </span>","children":null,"spread":false},{"title":"stm32f10x_conf.h <span style='color:#111;'> 5.49KB </span>","children":null,"spread":false},{"title":"STM32_Init.c <span style='color:#111;'> 252.84KB </span>","children":null,"spread":false},{"title":"stm32f10x_flash.c <span style='color:#111;'> 31.39KB </span>","children":null,"spread":false},{"title":"stm32f10x_adc.h <span style='color:#111;'> 16.04KB </span>","children":null,"spread":false},{"title":"stm32f10x_i2c.h <span style='color:#111;'> 15.31KB </span>","children":null,"spread":false},{"title":"stm32f10x_spi.c <span style='color:#111;'> 24.83KB </span>","children":null,"spread":false},{"title":"stm32f10x_tim.c <span style='color:#111;'> 97.00KB </span>","children":null,"spread":false},{"title":"stm32f10x_gpio.c <span style='color:#111;'> 20.65KB </span>","children":null,"spread":false},{"title":"stm32f10x_dma.c <span style='color:#111;'> 22.85KB </span>","children":null,"spread":false},{"title":"stm32f10x_tim1.h <span style='color:#111;'> 33.99KB </span>","children":null,"spread":false},{"title":"stm32f10x_type.h <span style='color:#111;'> 3.29KB </span>","children":null,"spread":false},{"title":"STM32_Init.h <span style='color:#111;'> 924B </span>","children":null,"spread":false},{"title":"stm32f10x_pwr.h <span style='color:#111;'> 3.88KB </span>","children":null,"spread":false},{"title":"cortexm3_macro.h <span style='color:#111;'> 2.26KB </span>","children":null,"spread":false},{"title":"stm32f10x_dma.h <span style='color:#111;'> 12.26KB </span>","children":null,"spread":false},{"title":"stm32f10x_exti.h <span style='color:#111;'> 5.73KB </span>","children":null,"spread":false},{"title":"stm32f10x_map.h <span style='color:#111;'> 19.92KB </span>","children":null,"spread":false},{"title":"stm32f10x_systick.h <span style='color:#111;'> 3.24KB </span>","children":null,"spread":false},{"title":"stm32f10x_systick.c <span style='color:#111;'> 7.05KB </span>","children":null,"spread":false},{"title":"stm32f10x_flash.h <span style='color:#111;'> 10.18KB </span>","children":null,"spread":false},{"title":"stm32f10x_usart.h <span style='color:#111;'> 11.57KB </span>","children":null,"spread":false},{"title":"stm32f10x_i2c.c <span style='color:#111;'> 44.33KB </span>","children":null,"spread":false},{"title":"stm32f10x_iwdg.h <span style='color:#111;'> 3.45KB </span>","children":null,"spread":false},{"title":"stm32f10x_nvic.c <span style='color:#111;'> 28.30KB </span>","children":null,"spread":false},{"title":"stm32f10x_adc.c <span style='color:#111;'> 53.72KB </span>","children":null,"spread":false},{"title":"stm32f10x_rtc.h <span style='color:#111;'> 3.68KB </span>","children":null,"spread":false},{"title":"stm32f10x_bkp.c <span style='color:#111;'> 10.46KB </span>","children":null,"spread":false},{"title":"stm32f10x_bkp.h <span style='color:#111;'> 3.44KB </span>","children":null,"spread":false},{"title":"stm32f10x_exti.c <span style='color:#111;'> 8.48KB </span>","children":null,"spread":false},{"title":"stm32f10x_usart.c <span style='color:#111;'> 32.73KB </span>","children":null,"spread":false},{"title":"stm32f10x_can.h <span style='color:#111;'> 12.03KB </span>","children":null,"spread":false},{"title":"stm32f10x_pwr.c <span style='color:#111;'> 11.03KB </span>","children":null,"spread":false},{"title":"stm32f10x_iwdg.c <span style='color:#111;'> 6.38KB </span>","children":null,"spread":false},{"title":"STM32_Reg.h <span style='color:#111;'> 7.80KB </span>","children":null,"spread":false},{"title":"stm32f10x_rcc.h <span style='color:#111;'> 13.53KB </span>","children":null,"spread":false},{"title":"stm32f10x_rcc.c <span style='color:#111;'> 41.96KB </span>","children":null,"spread":false},{"title":"stm32f10x_lib.c <span style='color:#111;'> 6.76KB </span>","children":null,"spread":false},{"title":"stm32f10x_can.c <span style='color:#111;'> 30.88KB </span>","children":null,"spread":false},{"title":"stm32f10x_rtc.c <span style='color:#111;'> 12.53KB </span>","children":null,"spread":false},{"title":"stm32f10x_nvic.h <span style='color:#111;'> 16.01KB </span>","children":null,"spread":false},{"title":"stm32f10x_wwdg.c <span style='color:#111;'> 7.65KB </span>","children":null,"spread":false},{"title":"stm32f10x_gpio.h <span style='color:#111;'> 12.27KB </span>","children":null,"spread":false},{"title":"stm32f10x_lib.h <span style='color:#111;'> 3.01KB </span>","children":null,"spread":false},{"title":"stm32f10x_tim.h <span style='color:#111;'> 28.47KB </span>","children":null,"spread":false}],"spread":false},{"title":"StartUp","children":[{"title":"STM32F10x.s <span style='color:#111;'> 11.04KB </span>","children":null,"spread":false},{"title":"cortexm3_macro.s <span style='color:#111;'> 9.32KB </span>","children":null,"spread":false}],"spread":true},{"title":"Object.Uv2 <span style='color:#111;'> 2.87KB </span>","children":null,"spread":false},{"title":"Object_Opt.Bak <span style='color:#111;'> 1.44KB </span>","children":null,"spread":false}],"spread":false}],"spread":true}]
评论信息
其他资源
- 软件开发合同-英文版.doc
- 物流管理系统原型（html）
- J-Flash-v6.14b
- 变异系数法计算权重
- openvr for double
- 2019年上半年系统分析师真题+答案解析上午选择+下午案例+论文完整版.zip
- 纽扣电池座封装PCBLIB 及其参数
- VS2017 离线签名验证失败-补充文件
- 食堂饭卡管理系统Java+sql server2000
- 可靠：强化学习的分布式超参数优化框架-源码
- 企业培训.人力资源.时间管理. 商务汇报. 入职培训_模板.pptx
- 编写MMC扩展名为.msc的程序.zip
- lightened_cnn_S 5M模型
- 论文研究-基于量子神经网络的道路交通事故预测 .pdf
- VB API 实现FTP上传下载源代码
- RSA JAVA代码
- j2ee实验-实现用户登录功能-servlet+jsp+mysql.zip
- 北京大学集成电路设计实习资料
- S7-200PLC经典练习程序
- mnist手写识别资源包。
- 视频捕获代码
- 基于C_S结构的Socket程序设计(含源码MFC和WIN32)
- 药品销售系统破解版
- 机械振动基础教材(胡海岩)
- ECStore 2.3.8 完全开源版（亲自折腾成功版本）
免责申明
【只为小站】的资源来自网友分享，仅供学习研究，请务必在下载后24小时内给予删除，不得用于其他任何用途，否则后果自负。基于互联网的特殊性，【只为小站】 无法对用户传输的作品、信息、内容的权属或合法性、合规性、真实性、科学性、完整权、有效性等进行实质审查；无论 【只为小站】 经营者是否已进行审查，用户均应自行承担因其传输的作品、信息、内容而可能或已经产生的侵权或权属纠纷等法律责任。
本站所有资源不代表本站的观点或立场，基于网友分享，根据中国法律《信息网络传播权保护条例》第二十二条之规定，若资源存在侵权或相关问题请联系本站客服人员，zhiweidada#qq.com，请把#换成@，本站将给予最大的支持与配合，做到及时反馈和处理。关于更多版权及免责申明参见 版权及免责申明
本站所有资源不代表本站的观点或立场，基于网友分享，根据中国法律《信息网络传播权保护条例》第二十二条之规定，若资源存在侵权或相关问题请联系本站客服人员，zhiweidada#qq.com，请把#换成@，本站将给予最大的支持与配合，做到及时反馈和处理。关于更多版权及免责申明参见 版权及免责申明