embedded linux primer

When I write this code, I find that many places are easily mistaken. Select may have an error, return-1.Like whatint fd_isset (int fd,fd_set *fdset), void fd_clr (int fd,fd_set *fdset), void fd_set (int fd,fd_set *fdset); void Fd_zero (int fd,fd_set *fdset);Several of the macros here are incoming pointers, not value passing.The SELECT function is declared as follows:int select (int maxfdp1,fd_set *readfds,fd_set *writefds,fd_set *exceptfds,struct timeval *timeout);Usage:1. First define good fd_

　　1. PrefaceVi/vim is a very important text editor in Linux. The first time I used this editor, I was not used to even know how to move the cursor and insert characters. After learning slowly, we know how to use Vi/vim. Vi/vim's role is to create, edit and display text files, in Vi/vim, without menus, only commands.2. Common CommandsVim has three modes of operation: Command mode, insert mode, and edit mode. One enters Vim, the default is the command

Article Title: how to add your own device driver in embedded Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. The driver can be co

Article Title: how to add your own device driver in embedded LINUX. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. The driver can be co

Article title: Digi Launches the industry's smallest Linux embedded device server. Linux is a technology channel of the IT lab in China. Digi Connect ME 9210 with Digi embedded Linux operating system is launched today, which includes basic categories such as desktop applicat

: libLIBRARY_NAME.a, such as libc. a, libcrypt. -Rwxr-xr-x 1 wei 105210 05-15 libcrypt-2.9.so -Rw-r -- 1 wei 139684 05-15 libcrypt. Lrwxrwxrwx 1 wei 13 05-15 16:09 libcrypt. so-> libcrypt. so.1 Lrwxrwxrwx 1 wei 15 05-15 16:09 libcrypt. so.1-> libcrypt-2.9.so Compared with these naming methods, glibc library is more special, it dynamic link library ld format for ld-GLIBC_VERSION.so, ld-linux. so. MARHOR_REVISION_VERSION (ARM, i386, m68k) or ld. s

The software and hardware design of an embedded Linux platform-general Linux technology-Linux programming and kernel information. The following is a detailed description. 1. uClinux Linux is a popular UNIX-like operating system. It is free and open source code and is widel

Article Title: Practices and discussions on Linux Embedded Systems. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. 　　 1. Practical Purp

First, the real-time machine of Linux is analyzed. Then, based on the characteristics of multimedia applications, the embedded Linux System for multimedia applications is constructed by improving the real-time performance of Linux systems. Experimental results show that the system can fully meet the needs of multimedia

Linux Kernel series-embedded compilation of asm _ volatile __and asm _ volatile _ in C Language _ In Embedded Assembly, the C language expression can be specified as the operand of the assembly instruction, and you do not have to worry about how to read the value of the C language expression into which register, and how to write the calculation result back to the

Article Title: New School: Implementation of time in embedded Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. First, clarify a pr

Free trial of Embedded Linux in Nanjing on September 11, August 18-Linux general technology-Linux programming and kernel information. The following is a detailed description. In line with the purpose of promoting Linux and embedded