针对嵌入式产品程序更新问题,提出了一种基于IAP技术的STM32单片机在线固件升级方案,设计了STM32单片机最小系统硬件电路和USB转串口通信电路,并给出了Bootloader程序、APP程序、PC上机程序的实现流程.实验结果表明,该方案具有简单实用、稳定性高、维护成本低和设备使用效率高的特点,适用于嵌入式产品升级.For the problem of updating embedded products program,an online firmware upgrade scheme of STM32 single chip microcomputer based on IAP technology is proposed.This scheme not only elaborates the principle of IAP technology in detail but also provides the design of the minimum system hardware circuit of STM32 MCU,the design of USB for serial communication circuit,and the implementation flow of Bootloader program,APP program and PC program.The experiment results show that the scheme is simple,practical and highly stable.In addition,it can be used to actual embedded product upgrading,significantly reducing maintenance costs and improving the efficiency of equipment.
上传时间： 2022-03-25
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S32K1xx Series Reference Manual 用户手册--2029页 Supports S32K116, S32K118, S32K142, S32K144, S32K146, and S32K148S32K是一款符合AEC-Q100规范、基于32位ARM Cortex-M4F和Cortex-M0+内核的MCU，适用于通用汽车和高可靠性工业应用。The S32K1xx product series further extends the highly scalable portfolio of Arm® Cortex®-M0+/M4F MCUs in the automotive industry. It builds on the legacy of the KEA series, while introducing higher memory options alongside a richer peripheral set extending capability into a variety of automotive applications. With a 2.70–5.5 V supply and focus on automotive environment robustness, the S32K product series devices are well suited to a wide range of applications in electrically harsh environments, and are optimized for cost-sensitive applications offering low pin-count options. The S32K product series offers a broad range of memory, peripherals, and package options. It shares common peripherals and pin counts, allowing developers to migrate easily within an MCU family or among the MCU families to take advantage of more memory or feature integration. This scalability allows developers to use the S32K product series as the standard for their end product platforms, maximizing hardware and software reuse and reducing time to market
标签： S32K116 S32K118 S32K142 S32K144
上传时间： 2022-04-16
上传用户：jason_vip1
【例3.1]4位全加器module adder 4（cout，sum i na，i nb，cin）；output[3：0]sum output cout；input[3：0]i na，i nb；input cin；assign（cout，suml=i na +i nb+ci n；endmodule【例3.2]4位计数器module count 4（out，reset，clk）；output[3：0]out；input reset，cl k；regl 3：01 out；always@posedge clk）
标签： verilog
上传时间： 2022-06-16
上传用户：canderile
INTRODUCTION In the past, adding speech recording and playback capability to a product meant using a digital signal processor or a specialized audio chip. Now, using a simplified Adaptive Differential Pulse Code Modulation(ADPCM) algorithm, these audio capabilities can be added to any PICmicro device. This application note will cover the ADPCM compression and decompression algorithms, performance comparison of all PICmicro devices, and an application using a PIC16C72 micro-controller.DEFINITION OF TERMS step size -value of the step used for quantization of ana-log signals and inverse quantization of a number of steps.quantization -the digital form of an analog input signal is represented by a finite number of steps.adaptive quantization -the step size of a quantizer is dramatically changed with time in order to adapt to a changing input signal.inverse quantizer -a finite number of steps is converted into a digital representation of an analog signal.
上传时间： 2022-06-20
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摘要：介绍在Linux操作系统环境下Socket网络编程的原理、流程和最终实现。编程采用客户端/服务器模式。提出解决多个客户端连接服务器时无法处理I/0多路复用问题的方法。提出通过最小化报文传输来减少传输时廷，为Bandwidth Delay Product调节TCP窗口，实现充分利用带宽提高Linux的Socket性能。在实际网络传输环境复杂多变的情况下，达到优化网络传输性能的目的。关键词：linux；性能优化；Socket；select（）1引言随着Internet的日益发展和普及，网络在嵌入式系统中应用非常广泛，越来越多的嵌入式设备采用Linux操作系统。Linux是一个源代码公开的免费操作系统，具有强移植性"，所以对基于Linux的Socket网络编程的研究越来越重要。2Socket简介在Linux中的网络编程通过Socket接口进行，是一种特殊的I/O，也是一种特殊的文件描述符。Socket是使用标准Linux文件符（file descriptor）和其他程序通信的方式。这里Socket 编程采用客户/服务器模式如图1所示。
上传时间： 2022-06-23
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Legal Disclaimer Lenze Semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. Lenze Semiconductor disclaims any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product.Lenze Semiconductor does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling Lenze Semiconductor products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Lenze Semiconductor for any damages arising or resulting from such use or sale.
上传时间： 2022-06-25
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nordic,芯片,规格nordic,芯片规格书nRF52832 Product Specification v1.4
上传时间： 2022-06-26
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1. General Description BL-M3362NS1 product is designed base on Broadcom BCM43362 chipset. It operates at 2.4GHz band and supports IEEE802.11b/g/n 1T1Rwith wireless data rate up to 72.2Mbps. It supports IEEE802.11isafety protocol, along with IEEE802.11e standard service quality. It supports standard interfaces SDIOV2.0(50 MHz,4-bit and1-bit) and generic SPI(up to 50 MHz), Integrated ARM Cortex?-M3 CPUwith on-chip memory enables running IEEE802.11 firmware that can be field-upgraded with future features.2. The range of applying Imaging platforms(printers, digital still cameras, digital picture frames)Consumer electronic devices(DTV, DVDplayers, Blu-ray players. etc.)Gaming platforms Carinformation MiFi/Mobile Routes Smart PAD Set-TopBoxes
标签： wifi
上传时间： 2022-07-04
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VIP专区-嵌入式/单片机编程源码精选合集系列（156）资源包含以下内容：1. 《嵌入式应用程序开发综合试验9例》含有9个嵌入式应用实践源程序。.2. NiosII NiosII!! SOPC CRC32 SOPC SOPC 自定义外设.3. 一个电话本的程序.4. 嵌入式minigui 中自定义控件的应用实例。不下后悔！.5. minigui 时间控件的使用方法.6. 嵌入式linux 设备驱动程序.7. uart-I2C, working on PIC18F2420.8. 基于mips cpu,在u-boot系统下磁盘驱动程序。.9. 可以应用到IAR EWARM-EV V5.20破解 使用方法： 1：首先用iarid.exe产生ID 2：使用iarkg.exe产生lic文件.10. 嵌入式开发前景和趋势.11. 嵌入式视频有下载器下载方法及一些基本的调试技巧。.12. 同济大学嵌入式学习文档.13. 转载其他网站的资料与大家分享.14. LED点阵显示屏扫描程序.15. altera公司开发销售的DE2开发平台原理图.16. 基于飞斯卡尔MC9S08QG8的基本程序开发代码.17. 本程序中用到DS1302以及液晶等模块.18. 一个垃圾压缩车的PLC程序。采用X端口作为模拟量转换后的数据量输入口。这种方法不需要买模拟量模块.19. 这是一个信号发生器得程序.20. 这个程序可以用作寄存器的使用.21. FAT32文件应用.22. 电源管理代码 基于linux2.6.10！apm方式的电源管理！很好的资料！做arm平台使用.23. I2C zongxian 总线 亲自编译.24. 用Verilog 实现将比特流数据转化为SPI协议数据的适配器.25. 最新F2系列的部分外围模块中文PDF,来自USER GUIDE的翻译.26. 单词计算器,可以统计你输入的单词的字母数有多少个等多个程序.27. FIBER AND wire product designed guider..28. xilin,ise_9.01的使用.29. ISE、Keil_C.30. 一本不错的数字图像处理书（冈萨雷斯中文版）总共有三个压缩文件需要放在一起解压缩.31. miniARM嵌入式web主程序,需要在运行miniarm.32. 单片机操作ocmj12232c-1屏的源代码.33. ISP1582 原理图.34. x-wrt is the GUI config tool for openwrt,which is a open project about wireless Router.35. 首先介绍了合成孔径雷达(SAR)的特点.36. tms320vc5509a usb boot.37. 基于Altera fpga 的软核 nios2的串口调试代码.38. cip51 i2c.39. 此源码为ocm12864系列字符液晶显示模块KEIL uVision3 for ARM.40. 此源码为KEIL uVision3 for ARM 的ocm12864系列字符液晶显示模块。.
上传时间： 2013-06-27
上传用户：eeworm
