Linux

Author: drivermonkey Contact way: 196568501 (qq), bookworepeng.hotmail.com Test environment: Processor: Ti am335x Test Board: Ti am3359beaglebone Boot Mode: uboot SD card boot Drop module: All Network Module All file systems except ext3 All

Driver code: #include #include #include #include #include #include #include struct message_to_app_dev{struct cdev* pcdev;dev_t devno;struct class *message_class;};static int message_open(struct inode *node, struct file *filp){printk("message_open()+

This chapter describes the driver development of the Linux input subsystem. The Linux input subsystem not only supports mouse, keyboard, and other conventional input devices, but also supports buzzer, touch screen and other devices. This chapter

Mail: bookworepeng@Hotmail.com Qq: 196568501 Author: Driver Monkey Phone: 13410905075 1. Compile the mdev function into busyboxLinux System Utilities --->[*] Mdev[*] Support/etc/mdev. conf[*] Support command execution at device addition/removal 2.

Mail: bookworepeng@Hotmail.com Qq: 196568501 Author: Driver Monkey Phone: 13410905075 #include #include #include #include #include MODULE_LICENSE("Dual BSD/GPL");MODULE_AUTHOR("Driver Monkey");static int monkey_match(struct device *dev, struct

View library dependency on PC Linux You can directly use the ldd command to view executable programs, such: Root @ forlinx :~ # Ldd/bin/mvLinux-gate.so.1 => (0x00c7b000)Libselinux. so.1 =>/lib/i386-linux-gnu/libselinux. so.1 (0x00136000)Librt. so.1 =

/Author: DriverMonkey// Mobile: 13410905075// Mail: bookworepeng@Hotmail.com// Qq: 196568501 # Include # Include # Include # Include # Include # Include # Include # Define MAX_SEND_SIZE 80# Define RETURN_MSG_TYPE 0XAA# Define SEND_MSG_TYPE

//author:DriverMonkey//phone:13410905075//mail:bookworepeng@Hotmail.com//qq:196568501#include #include #include #include #include #include #include #include #include #include #include #include #include #include #define GPIO_TO_PIN(bank,

APP: //author:DriverMonkey//phone:13410905075//mail:bookworepeng@Hotmail.com//qq:196568501#include#include#include#include#include#include#define US (1000)#define PPM_CHANEL 8#define FIX_LOW_TIME 100*US#define FIX_SYNC_TIME 5000static long long ppm_

Initial learning of GCC 1. What is GCC? GCC is also called gnu c compiler. GCC advantages: 1. Open Source 2. Efficient Ii. Basic usage Create a file and write the program Hello. c # Include int main (void) {printf ("Hello, word! \ N ");

Design of Robot Control System Based on arm9-and Linux [Date:] Source: single-chip microcomputer and Embedded System Application by Luo Lei Dai Xuefeng, Qiqihar University, Liu shudong [Font:Large Medium Small]

After reading Hawkins's blog, I mentioned how to correct the time to the local time in Fedora Core 6, and I also checked how ubuntu was set, Suddenly realized the relationship between system programs, system startup scripts, and configuration files,

There are several stages. Start viewing ulk,The best thing about ulk is that he advocated a particularly good learning method. When you want to learn something, first read the header file and do not look at the implementation code before figuring

1. Analysis of cpu load Mpstat-P ALL Linux 3.11.0-rc3 08/13/2013 _ i686 _ (4 CPU) At 02:41:45 CPU % usr % nice % sys % iowait % irq % soft % steal % guest % idle02:41:45 all 4.17 0.00 1.67 1.65 0.00 0.01 0.00 0.00 92.4902:41:45 PM 0 4.27 0.00 2.53 2

1. Functions of the fstab fileFile/etc/fstab stores the file system information in the system. When the file is correctly set, you can run the "mount/directoryname" command to load a file system. Each file system corresponds to an independent line,

# Uname-A # view kernel/operating system/CPU Information# Cat/proc/version # view the kernel# Cat/etc/issue # view the operating system version# Head-N 1/etc/issue # view the operating system version# Cat/proc/cpuinfo # view CPU Information#

// UNKNOWN SOURCE Embedded systems are different from general-purpose PCs. Generally, they do not have storage devices such as hard disks. Instead, they use Flash chips, small Flash cards, and other storage devices designed for embedded systems,

After the Linxu system kernel is upgraded Grub boot items display the boot options for the new and old kernels, How to delete unnecessary boot items: 1. Find the kernel version installed in the system Ubuntu command: $ dpkg --

For new users who have just entered the embedded field, I don't want to talk too much about technical issues, due to technical issues, many senior lecturers from the far-sighted perspective of Huaqing will give you a detailed explanation in future

The ACE Library provides two classes for thread synchronization: ACE_Thread_Mutex and ACE_REcursive_Thread_Mutex. In my opinion, we can use ACE_REcursive_Thread_Mutex instead of ACE_Thread_Mutex for Thread Synchronization in linux. The reason is