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[嵌入式/单片机/硬件编程] PCF8563_CN

1.概述 PCF8563 是低功耗的 CMOS 实时时钟/日历芯片,它提供一个可编程时钟输出,一个 中断输出和掉电检测器,所有的地址和数据通过 I2C 总线接口串行传递。最大总线速度为 400Kbits/s,每次读写数据后,内嵌的字地址寄存器会自动产生增量。 2.特性 * 低工作电流:典型值为 0.25μA(VDD=3.0V, Tamb=25℃时)。 * 世纪标志 * 大工作电压范围:1.0~5.5 * 低休眠电流;典型值为 0.25μA(VDD=3.0V,Tamb=25℃) * 400KHz 的 I2C 总线接口(VDD=1.8~5.5V 时)。 * 可编程时钟输出频率为: 32.768KHz, 1024Hz, 32Hz, 1Hz。 * 报警和定时器。 * 掉电检测器。 * 内部集成的振荡器电容。 * 片内电源复位功能。 * I2C 总线从地址:读, 0A3H;写, 0A2H。 * 开漏中断引脚。 3.应用 z 移动电话 z 便携仪器 z 传真机 z 电池电源产品
The PCF8563 is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low power consumption. A programmable clock output, interrupt output, and voltage-low detector are also provided. All addresses and data are transferred serially via a two-line bidirectional I2C-bus. Maximum bus speed is 400 kbit/s. The register address is incremented automatically after each written or read data byte. (2018-05-28, C/C++, 334KB, 下载1次)

http://www.pudn.com/Download/item/id/1527469567451707.html

[嵌入式/单片机/硬件编程] ee276

wolf calculated Lyapunov exponent, Compared with the results of theoretical analysis, The signal spectral analysis and filtering.
wolf calculated Lyapunov exponent, Compared with the results of theoretical analysis, The signal spectral analysis and filtering. (2017-08-13, Pascal, 5KB, 下载1次)

http://www.pudn.com/Download/item/id/1502586681637994.html

[嵌入式/单片机/硬件编程] 208A_CN

目前 MOSFET 驱动器的主要用途之一是进行不同类型 电机的驱动控制。此应用笔记对一些基本概念进行讨论 以帮助用户选择适合应用的 MOSFET驱动器。 电机和 MOSFET 驱动器之间的电桥通常由功率晶体管 组成,如双极型晶体管、MOSFET或绝缘栅双极型晶体 管(Insulated Gate Bipolar Transistor,IGBT) 。在一 些小型无刷直流电机或步进电机应用中,MOSFET驱动 器可用来直接驱动电机。 不过,在本应用笔记中,我们 需要的电压和功率较 MOSFET 驱动器所能提供的要高 一些。
Currently MOSFET driver is one of the main purposes for different types of motor drive control. This application note discusses some of the basic concepts to help users select the appropriate application of the MOSFET driver. Motor and MOSFET driver usually consists of bridge between the power transistors, such as bipolar transistors, MOSFET or insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT). In some small brushless DC motor or stepper motor applications, MOSFET drivers can be used to directly drive the motor. However, in this application note, we need the voltage and power than the MOSFET driver can provide higher. (2013-07-04, PDF, 953KB, 下载6次)

http://www.pudn.com/Download/item/id/2296574.html

[嵌入式/单片机/硬件编程] Leasing

绘芯墙体彩绘机租赁管理办法,武汉绘芯为了解决客户的后顾之忧,我们推出了彩绘机设备租赁业务,帮助您合理安排投资成本。 一、彩绘机租赁的优势: 1.公司刚创业,资金不充裕并想降低投资风险。生产投入,设备购买费用往往占据了巨大的投资成本。租赁服务能够进行有效的成本控制,避免资金风险。 2.现在,设备的更新换代的速度越来越快,投入大量的资金购买新的设备,不久或许就将面临设备淘汰、贬值的风险。租赁由厂家自动更新设备,能保证设备技术水平的先进性。 3.新设备运行过程中产生设备故障、需长时间等待维修。设备租赁可以及时交付使用,不妨碍企业运作,提高了工作效率。 4.新设备使用率不高,仅需周期性或阶段性使用,造成资源闲置。设备租赁能够很好地变通,可以随时终止或互换。 5.临时、需紧急使用。采用设备租赁不失为一个比较经济合理的选择。 6.租用设备,租期越长,优惠越多。亦可先租后买,租期之内确定购买,免收租金。
Core wall painting painting machine lease management approach to address the core of Wuhan draw customers to worry about, we have introduced a painting machine equipment leasing business, to help you arrange the investment cost. (2011-05-18, C++ Builder, 44KB, 下载3次)

http://www.pudn.com/Download/item/id/1536901.html

[嵌入式/单片机/硬件编程] FAT16

嵌入式FAT文件系统免费源码下载 该文件系统是由本人个人开发的,全部代码在VC下编写,测试。VC下测试基于虚拟磁盘驱动(在Flash_management.c)实现对磁盘的读写。实现的文件系统兼容FAT16/FAT32文件系统格式,兼容长文件名,兼容GB2312/UNICODE汉字编码,并且实现了对子目录的支持,实现了文件的读取,写入,创建,删除等文件系统的常用功能。另个,代码都使用C编写,可以移植到单片机上运行。 (FAT16是免费代码,用户可直接使用。 本代码有FAT32(兼容FAT16)和多个盘的版本(收费), 如果需要,请与本人联系!qq:292942278,E-MAIL:tony_yang123@sina.com.cn)
Embedded FAT file system source code for free download The file system is composed of my personal development, all code in the VC prepared and tested. To test the VC based on the virtual disk drive (in the Flash_management.c) achieve the disk read and write. Implemented file system is compatible with FAT16/FAT32 file system format, compatible with long file names, is compatible with GB2312/UNICODE Chinese character coding, and realized its subdirectory support for the implementation of documentation to read, write, create, delete and other file system common functions. The other one, write code using C can be ported to run on microcontrollers. (FAT16 is free code, users can directly use. This code has FAT32 (compatible with FAT16) and multi-disc version (fee), if required, please contact me! qq: 292942278, E-MAIL: tony_yang123@sina.com.cn) (2010-03-23, C/C++, 667KB, 下载144次)

http://www.pudn.com/Download/item/id/1097138.html

[嵌入式/单片机/硬件编程] FAT16

FAT16文件系统免费C代码下载 1)兼容FAT16/FAT32文件系统,支持长文件名,多级目录,多盘操作,读写,创建,删除文件,盘遍厉等等功能 2)采用C代码编写,方便的移植于多种计算机应用平台,一般情况下只需编写额外磁盘的读写驱动,即可使用文件系统所有的功能。 3)具备文件数据块缓冲功能:1)读文件时,读位置在数据块缓冲内,即可直接从数据块缓冲中读取数据,而不需读物理磁盘,加快了读取文件的速度;而且,文件数据块缓冲的大小可由编译宏EnableFileBuf,TotalFileBUFsQTYeachFCB,FileBUFSize来控制。 4)支持打开多达254个文件;同时,最大允许打开文件数目由编译宏MaximumFCB设定。 5)支持多任务下文件的并发存取:即一个文件可同时被多个任务引用,其中只有第一个引用文件的任务可得到文件的读写完全权限,因此,实现文件了多任务环境下的并发存取。 (FAT16代码为免费代码,用户可用于产品上,并拥有修改的权利! 本代码有FAT32(兼容FAT16)和多盘的收费版本, 如果需要,请与本人联系!qq:292942278,E-MAIL:tony_yang123@sina.com.cn)
FAT16 file system, C code for free download 1) Compatible FAT16/FAT32 file system, support long file names, multi-level directory, multi-disk operations, read and write, create, delete files, disk and so on over the function of Li 2) using C coding to facilitate transplantation in a variety of computer application platform, under normal circumstances only the development of additional disk drives to read and write, you can use the file system for all functions. 3) Have the file data block buffer functions: 1) read the file, read the location data block buffer, the buffer can be directly read from the data block of data without having to read physical disk, speed up the speed of reading the file Moreover, the file data block size of the buffer can be compiled macro EnableFileBuf, TotalFileBUFsQTYeachFCB, FileBUFSize to control. 4) support to open up to 254 documents the same time, the maximum allowable number of open files by the compiler macro MaximumFCB settings. 5) Supp (2009-10-02, Visual C++, 444KB, 下载81次)

http://www.pudn.com/Download/item/id/927717.html

[嵌入式/单片机/硬件编程] MFRC500antenna

这是支持MF RC500 MIFARE 读写集成电路IC的有关射频设计的应用笔记。意在提供对MIFARE 射频接口(ISO 14443A)所需的理解来设计具体天线应用和匹配电路,为了使无接触MIFARE卡通信有最优表现。本文给出了系统的RF部分背景,以及如何为标准应用设计和调试天线的过程概述。详细说明了两种不同的天线和匹配概念以及它们的设计实例。还描述了完整的调试天线的步骤。作为附件的一部分,有兴趣的读者会发现RF接口的详细理论描述
This is to support reading and writing IC MF RC500 MIFARE RF IC design of the Application Notes. Intended to provide MIFARE RF Interface (ISO 14443A) designed to understand the requirements of specific applications and antenna matching circuits, in order to make contactless MIFARE cards have the best communication performance. In this paper, the RF part of the background of the system, as well as standard application for the design and debugging process of an overview of the antenna. Detailed description of the two different concepts of antennas and matching, as well as their design. Also a complete description of the steps to debug the antenna. As part of the annex, interested readers will find the detailed theory of RF Interface Description (2009-04-13, C/C++, 1360KB, 下载274次)

http://www.pudn.com/Download/item/id/713922.html

[嵌入式/单片机/硬件编程] SPI_test

AVR ATmega48 SPI最簡單測試碼! 透過spi_data[x]陣列寫入想要傳送的資料, 而x則是控制傳送第x筆數,而接腳輸出則在PortB的預設接腳內,只要修改spi_data就可以透過示波器看到SPI的信號了!
AVR ATmega48 SPI test the most simple code! Through spi_data [x] array you want to send the information to write, and x is the control of transmission of the first x amounts, while the output pin in the PORTB pin within the default, as long as the modified spi_data can see through the oscilloscope SPI the signal! (2009-02-13, C/C++, 11KB, 下载79次)

http://www.pudn.com/Download/item/id/643341.html

[嵌入式/单片机/硬件编程] lhs-src-20090106-gpl.tar

Linux Home Server 是专门为家庭和SOHO/SMB 设计的高性价比的ISCSI 存储服务器, 具有如下的特色: 强大的iscsi 存储服务器软件; 混合iscsi 和NAS 服务; Free, 基于Linux; LHS-200 的编译使用openwrt 框架,需要先下载并配置openwrt 开发环境 从openwrt 的开发站点 https://dev.openwrt.org, 下载最新的开发分枝,并下载到本地 svn co https://svn.openwrt.org/openwrt/trunk/ 为方便起见,建议下载所有的可选包,后面要用到 svn co https://svn.openwrt.org/openwrt/packages/ 从公司网站 http://www.linuxce.cn 或者 http://www.linuxce.net 下载 LHS-200 的最新源代码并解压缩,源代码中包含两个目录和一个README文件,按README文件的要求,拷贝下列包到trunk/package 目录 libs/libiconv net/samba3 utils/pciutils net/wget net/ctorrent libs/uclibc++ 然后从解压缩的源代码中分别拷贝目录modified 和lhstoolfix中的内容到trunk 目录 至此,就可以象通常的openwrt 项目一样进行编译, Target System 选 "RDC 321x", Target Profile 选 "R3210 based linux home server board"
err (2009-01-07, Unix_Linux, 1757KB, 下载28次)

http://www.pudn.com/Download/item/id/626719.html

[嵌入式/单片机/硬件编程] ARM-Cortex-M3-cn

Cortex-M3是首款基于ARMv7-M架构的处理器,是专门为了在微控制器,汽车车身系统,工业控制系统和无线网络等对功耗和成本敏感的嵌入式应用领域实现高系统性能而设计的,它大大简化了可编程的复杂性,使ARM架构成为各种应用方案(即使是最简单的方案)的上佳选择。
Cortex-M3 is the first based on ARMv7-M processor architecture, is designed for in microcontrollers, automotive body systems, industrial control systems and wireless networks such as power consumption and cost-sensitive embedded applications to achieve high system performance and design, it greatly simplifies the complexity of programmable, so that ARM architecture has become a wide range of applications programs (even the most simple program) a good choice. (2008-06-11, Asm, 729KB, 下载96次)

http://www.pudn.com/Download/item/id/487109.html

[嵌入式/单片机/硬件编程] fat_demo_CODE

1)兼容FAT16文件系统,长文件名,最大路径长度260个字节,符合Microsoft Longfilename specification。 2)可移植于各种平台,只需编写sector驱动驱动,共计两个函数:1)read_flash_sector() 2)write_flash_sector()。 3)文件缓冲功能:1)读文件时,读位置在文件缓冲区内,则可直接读文件缓冲区,不需要读物理磁盘;文件缓冲区大小可使用编译宏EnableFileBuf,TotalFileBUFsQTYeachFCB,FileBUFSize来控制。 4)可同时打开多个文件;最大打开文件数可使用编译宏MaximumFCB设定,MaximumFCB最大值限定为254。 5)文件保护功能:文件可同时打开多个FCB,而只有其中一个FCB可以得到文件RD/WR权限。该功能完全由文件系统代码来完成,上层应用无需编写额外代码。 6)所有编译宏存放于文件fat_cfg.h。 联系作者:QQ:292942278,e-mail:figureyang@yahoo.com.cn (2008-05-25, Borland C++, 834KB, 下载135次)

http://www.pudn.com/Download/item/id/472791.html

[嵌入式/单片机/硬件编程] linux_porting_cn

linux移植的完整文档,包括交叉编译器,bootloader,内核 作者写得很详细,对想从事或已经从事linux,arm嵌入式开发的开发人员很有帮助!
linux transplant complete documentation, including cross-compiler, Bootloader. kernel authors write very detailed, right to engage in or have engaged in linux. Embedded development arm of the development staff helpful! (2007-06-14, C/C++, 1002KB, 下载1165次)

http://www.pudn.com/Download/item/id/296035.html

[嵌入式/单片机/硬件编程] Learning_MISRAC_Criterion

嵌入式系统应用工程师借用计算机专家创建的C语言,使嵌入式系统应用得以飞速发展,而MISRAC是嵌入式系统应用工程师对C语言嵌入式应用做 出的贡献。如今MISRA C已经被越来越多的企业接受,成为用于嵌入式系统的C语言标准,特别是对安全性要求极高的嵌入式系统,软件应符合MISRA标准。 本文由清华嵌入式系统研究专家,邵贝贝教授领衔执笔,分六讲,跟读者一起学习MISRAC。 第一讲:“‘安全第一’的C语言编程规范”,简述MISRAC的概况。   第二讲:“跨越数据类型的重重陷阱”,介绍规范的数据定义和操作方式,重点在隐式数据类型转换中的问题。   第三讲:“指针、结构体、联合体的安全规范”,解析如何安全而高效地应用指针、结构体和联合体。   第四讲:“防范表达式的失控”,剖析MISRAC中关于表达式、函数声明和定义等的不良使用习惯,最大限度地减小各类潜在错误。   第五讲:“准确的程序流控制”,表述C语言中控制表达式和程序流控制的规范做法。   第六讲:“构建安全的编译环境”,讲解与编译器相关的规范编写方式,避免来自编译器的隐患。 希望大家喜欢。
embedded system engineers use computer experts created by the C language, Embedded systems make application to rapid development MISRAC which is embedded system engineers from the C language embedded application made contributions. Now MISRA C has been more and more enterprises are accepted as for embedded system in C language standard, especially for high security requirements of embedded systems, software should comply with MISRA standards. This paper from Qinghua embedded systems, an expert Professor Shao Beibei headed the pen, six speakers, with the readers learn MISRAC. 1st : " 'safety first' C programming language norms," MISRAC brief overview. 2nd : "data across numerous types of traps" to introduce a standardized data definitions and practices, focus on (2006-10-22, WORD, 59KB, 下载95次)

http://www.pudn.com/Download/item/id/220570.html

[嵌入式/单片机/硬件编程] IEC61131

IEC 61131-3是可编程序控制器的编程语言的标准,它将现代软件的概念和现代软件工程的机制与传统的PLC编程语言成功地结合,使它在工业控制领域的影响越出PLC的界限,成为DCS、PC控制、运动控制,以及SCADA的编程系统事实上的标准。本文综述了该标准成功的原因,它的优势和不足,目前和今后的发展,以及推广应用的活动。
PLC programming language standards, it modern software and the concept of the modern software engineering with the traditional mechanism of PLC programming language successfully integrated, it industrial control in the affected areas beyond the limits PLC, as DCS, PC control, motion control, the programming and SCADA system the de facto standard. This paper reviews the success of the standard reasons, the advantages and shortcomings, the current and future development and application activities. (2006-06-15, MultiPlatform, 26KB, 下载210次)

http://www.pudn.com/Download/item/id/194621.html
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