watchdog antivirus

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Linux kernel interrupt (IOREMAP, internal watchdog interrupt, external interrupt)

if(p==NULL) * { $Printk"Request error!\n"); Panax Notoginseng return 1; - } the +Gpio_virt = Ioremap (0x11000000, sz_4k); A //Ioremap physical memory to virtual memory mapping the* (unsignedLong*) (Gpio_virt +0x2e0) =1; +* (unsignedLong*) (Gpio_virt +0x2e4) =0; -Printk"Hello led!\n"); $ $Printk"Phys:%p\n", Virt_to_phys (Gpio_virt)); - - return 0; the } - Wuyi voidtest_exit () the { -Printk"Bye bye!\n"); WuIounmap (gpio_virt); -Release_mem_region (0x

Watchdog Implementation Analysis

System Startup Process diagram: All services in the framework layer are run in the systemserver process, and the systemserver process is created by the zygote process. Systemserver process initiation involves two processes: init1 creates a service and a process state object; init2 creates a service at the framework layer, adds it to servicemanager, and finally starts launcher; Android provides the watchdog class, which is used to monitor w

IOS-Exception Type: 00000020: What is the watchdog mechanism, ios-00000020

IOS-Exception Type: 00000020: What is the watchdog mechanism, ios-000000201. preface a Crash we encountered after the project Crash a few days ago. After visiting many forums, the blog did not find a satisfactory reply.IOS watchdog mechanismWith a basic understanding, there are a lot of strange Crash may be shared today because of the iOS watchdog mechanism. I ho

Analysis on the implementation of Android watchdog _android

System startup process diagram: All service in the framework layer is run in the systemserver process; The systemserver process is created by the zygote process. The systemserver process starts in two processes init1 creating service and process state objects, init2 creating the service for the framework layer, adding it to the ServiceManager, and finally starting launcher; Android provides a watchdog class to monitor whether a service is working pro

STM32F4 window watchdog WWDG using library functions

The window watchdog (WWDG) is used to discover software failures caused by external interfaces or unexpected logical operations. These failures can cause program outages to run correctly. At the end of a program cycle, the watchdog circuit generates an MCU reset signal unless the program returns to normal operating logic before the watchdog circuit is reset. When

[Kernel Document Series] NMI Watchdog

[Kernel Document Series] NMIWatchdog Qin Baiyi Qinchenggang@sict.ac.cn [Both x86 and X86-64 architectures support NMI watchdog] Is your system locked frequently?Up )? After unlocking, the system no longer responds to the keyboard? Do you want to help us solve similar problems? If you answer "yes" to all questions, this document is for you. On a lot of X86/X86-64-structured hardware, we can use a mechanism called the "

Assembly write startup code shut watchdog and set stack and call C language and Icache__c language

Refer to Teacher Zhu Tutorial video explanation, video link address: http://edu.51cto.com/lecturer/user_id-9584512.html 1. Guard Dog Watchdog (Watch dog timer watchdog timers)Physically, the watchdog is actually a timer (similar to a real-life alarm clock), and hardware is an internal peripheral inside the SOC.Wtcon (0xe2700000), where BIT5 is a

Raspberry Pi Raspbian Software source change watchdog enabled

University of Science and Technology Raspbian http://Mirrors.hustunique.com/raspbian/raspbian/archLinux ARM http://mirrors.hustunique.com/archlinuxarm/Dalian Neusoft Information Institute Source (North User) Raspbian http://mirrors.neusoft.edu.cn/raspbian/raspbian/Chongqing University Source (Midwest User) Raspbian http://mirrors.cqu.edu.cn/raspbian/raspbian/Other parts:1. Chinese language support and Chinese input methodsudo Install -y ttf-wqy-zenheisudoinstall -y Scim-pinyin2. Install Vimsudo

STM32 window watchdog _ Atom battleship WWDG Routines Learning notes

For the WWDG routines given by the STM32 window watchdog and the atomic battleship, there are a few issues to be recorded. 1. WWDG time-out formula derivation 1.1 WWDG work diagram 1.2 WWDG time-out formula derivation (1) The value of the upper window can only be set, the maximum number of 7 bits binary can only be set to 127 (0x7F), the minimum must be greater than the 0x40 of the lower window, so its value range is 64~127 (ie: 0x40~0x7f) (2) Config

[Reprinted] how to use the window watchdog of stm32

The window guard of ipvf has a 7-digit decreasing counter, which generates a reset of the Watchdog in either of the following situations:1) when the counter value is reduced from 0x40 to 0x3f2) When the counter value is greater than a set value when the watchdog is refreshed, the set value is defined in the wwdg_cfr register.For common dog,ProgramYou can refresh the wat

File change monitoring in Python-watchdog

File monitoring in Python has two main libraries, one is pyinotify (Https://github.com/seb-m/pyinotify/wiki) and the other is watchdog (http://pythonhosted.org/ watchdog/). Pyinotify relies on the inotify of the Linux platform, which encapsulates events from different platforms. Because I mainly used in the Windows platform, so the following emphasis on watchdog

Antivirus tips and 6 antivirus mistakes

First, the general method 1, please upgrade your anti-virus software to the latest version, to ensure that the virus library is the latest. 2, for networked users, please break off the network before antivirus. Non-system viruses that have been activated or are in attack In this case, if the antivirus in the general Windows environment, the effect may be greatly compromised. Although, now anti-virus sof

5, CC2541 Chip Intermediate tutorial-osal operating system (pwm+ watchdog)

This article is based on a week CC2541 notes summarySuitable for overview and quick index of knowledge--All Links:Intermediate Tutorial-osal Operating system \osal operating system-a preliminary study of experimental osal"Insert" sourceinsight-Engineering Establishment methodIntermediate Tutorial-osal Operating System (Osal System solution basic routines)Intermediate Tutorial-osal Operating system (learn more about-oled normal keys and 5-directional buttons-interrupts!!!) This system drive laye

I2C bus-based electro-mechanical memory fm31256 with watchdog and real-time clock

AbstractFm31256 is a multi-functional storage chip based on I2C bus and powered by the iron and electronics technology. In addition to non-volatile memory, the device also provides real-time clock, low-voltage reset, watchdog counters, non-volatile event counters, lockable serial digital identification, and other features. This article mainly introduces the basic functions and principles of fm31256, and gives the specific application methods of fm3125

How to Use the 51 watchdog function

The serial 51 in ATMEL has the same functions as 89C51. Command compatibility. The hex program does not require any conversion.Directly. Listen 51 only adds a watchdog function than 89C51. For other functions of iis51, refer to 89C51..The use of the watchdog is as follows:In program initialization, first write 01eh to the watchdog register (wdtrst address is 0a6h

Cortex_m3_stm32 Embedded Learning Note (vi): Window watchdog experiment (WWDG)

Window watchdog (WWDG) is often used to monitor software failures caused by external interference or unforeseen logic conditions that result from an application deviating from a normal running sequence. In short, the difference between the IWDG and the IWDG is to feed the dog by hand, and WWDG has a built-in interrupt, so you can use the Set Interrupt service function to feed the dog.First, set the WWDG (remember to add a header file to the project)

The implementation of Linux soft watchdog

softwarewdt.h/** function: Monitor the running state between threads (soft watchdog) * * Author: jdsh** time: 2015-01-15 22:20*/#include Description: This section of the function is to implement a soft watchdog, used to monitor the running state of each thread, the use must first request the watchdog thread ID, in order to reasonably use the soft

Use of the 9.WatchDog class "Allwinner ClassA20 class Library Analysis"

watchdog we are familiar with, mainly for the system after the crash of automatic reset or active reset of a way, in the system of unmanned duty is essential. But in the general human-computer interaction system, it is closed by default, to use before the first to open it, the following to see how it is used. Before you use it, firsthttps://github.com/tjCFeng/ClassA20 Download the ClassA20 class library.In particular, to use

Enable the hardware watchdog function of Raspberry Pi

Some time ago, cgminer was set to start when it was started. Due to various problems, the system was not very stable and it was stopped from time to time. I checked it online, and Raspberry Pi immediately tried the hardware guard function, which basically solved my problem. ? The principle is simple: Watchdog requires heartbeat) If no data is fed within the specified time period (15 seconds by default), the system restarts automatically. ? However, it

Six mistaken ideas of computer antivirus antivirus

Our computer will be subject to the virus at any time, antivirus anti-virus is one of the things that our computer users need to do. However, in many cases, our understanding of antivirus antivirus is there is a mistake, misunderstanding. Small knitting here to organize several of our misunderstanding.   Common anti-virus

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