demod_dtmf

海康威视客户端SDK（以下简称“客户端SDK”）是海康威视嵌入式网络硬盘录像机、视频服务器、IP设备的配套产品，用于设备远程访问及远程控制软件的开发，适用于以下产品型号： 客户端SDK主要功能： 图像预览、文件回放和下载、云台控制、布防/撤防、语音对讲、日志管理、解码卡. 远程升级、远程重启/关闭、格式化硬盘、参数配置（系统配置、通道配置、串口配置、报警配置、用户配置）等. (Hikvision client SDK (hereinafter referred to as " client SDK) Hikvision embedded network hard disk video recorders, video servers, IP devices and accessory products for device remote access and remote control software, for Product Model: DS-90xx hybrid DVR DS-80xx, the DS-70xx, the DS-71xx, DS-72xx DVR DS-60xx, DS-61xx video server, encoder/decoder, IP devices, including IP blocks, IP camera (hereinafter referred to as the " IPC" ), IP fast ball, and other client SDK main features: image preview, playback and download files, PTZ control, arm/disarm, voice intercom, log management, decoder card remote upgrade, remote reboot/off, format the hard disk parameter configuration (system configuration, channel configuration, the serial port configuration, alarm configuration, user configuration))

说明：  U-Boot不仅仅支持嵌入式Linux系统的引导，它还支持NetBS D, VxWorks, QNX, RTEMS, ARTOS, LynxOS, android嵌入式操作系统。其目前要支持的目标操作系统是OpenBSD, NetBSD, FreeBSD,4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks, LynxOS, pSOS, QNX, RTEMS, ARTOS, android。这是U-Boot中Universal的一层含义，另外一层含义则是U-Boot除了支持PowerPC系列的处理器外，还能支持MIPS、 x86、ARM、NIOS、XScale等诸多常用系列的处理器。这两个特点正是U-Boot项目的开发目标，即支持尽可能多的嵌入式处理器和嵌入式操作系统。就目前来看，U-Boot对PowerPC系列处理器支持最为丰富，对Linux的支持最完善。其它系列的处理器和操作系统基本是在2002年11 月PPCBOOT改名为U-Boot后逐步扩充的。从PPCBOOT向U-Boot的顺利过渡，很大程度上归功于U-Boot的维护人德国DENX软件工程中心Wolfgang Denk[以下简称W.D]本人精湛专业水平和执着不懈的努力。(U-boot not only supports the boot of embedded Linux system, but also supports netbs D. VxWorks, QNX, RTEMS, Artos, lynxos, Android embedded operating system. The current target operating systems to be supported are OpenBSD, NetBSD, FreeBSD, 4.4BSD, Linux, SVR4, ESIX, Solaris, IRIX, SCO, Dell, NCR, VxWorks, lynxos, PSOs, QNX, RTEMS, Artos, Android. This is the meaning of universal in u-boot. The other meaning is that u-boot supports not only PowerPC series processors, but also MIPs, x86, arm, NIOS, Xscale and many other commonly used series processors. These two characteristics are exactly the development goal of the u-boot project, that is to support as many embedded processors and embedded operating systems as possible. At present, u-boot has the richest support for PowerPC series processors and the most perfect support for Linux.)

IXP43X SCHematic pdf format

Linux 嵌入式可移植开发，帮助大家在研究时提供帮助，希望自己提供的能帮助到大家。(Linux of FPGA. Coule helping others to make the greater products.)

wifi小车 RG100A_DB120专用固件集成ser2net等，已设置ser2net开机自启，默认的是301摄像头(the wifi car RG100A_DB120 special firmware integrated ser2net has been set boot from Kai ser2net, the default is 301 camera)

OPC UA MASTER 协议栈，测试可用 (OPC UA protocol stack)

嵌入式Linux下基于CGI的文件上传下载实现，很实用的书。(Linux based on embedded under of CGI file upload download realized)

说明：  用于linux下，支持jpg格式的usb摄像头一帧图像获取，并保存为jpg格式文件(For linux, support jpg format usb camera an image acquisition, and saved as jpg format file)

一个进程预定义了三个流：标准输入、标准输出、标准出错。分别用文件描述符STDIN_FILENO、STDOUT_FILENO、STDERR_FILENO分别表示他们，用流指针stdin、stdout、stderr可以加以引用。(Process IO on the first day of learning )

s3c2440 linux移植，详细内容见文档(s3c2440 linux transplant, for details, see the document)