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Method, device and single panel for feeding watchdog by embedded system

An embedded system and dog feeding signal technology, applied in the field of communication, can solve problems such as system reset by mistake, and achieve the effect of avoiding excessive load and reducing resource overhead.

Inactive Publication Date: 2012-08-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a dog feeding method, device, and single board for an embedded system,

Method used

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  • Method, device and single panel for feeding watchdog by embedded system
  • Method, device and single panel for feeding watchdog by embedded system
  • Method, device and single panel for feeding watchdog by embedded system

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0035] The embodiment of the present invention provides a method for feeding a dog in an embedded system, such as figure 1 As shown, the method includes the following steps:

[0036] 101. Determine whether the time value for enabling dog feeding is reached.

[0037] The dog-feeding enable time value is periodic, and each time the dog-feeding enable time value is reached, the central processing unit sends a dog-feeding enable message to the d...

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Abstract

The invention discloses a method, a device and a single panel for feeding a watchdog by an embedded system, and relates to the technical field of communication, and aims to reduce a load of a central processing unit (CPU), save the thread resources and solve the problem of mis-resetting of the system, which is caused by overhigh load of the CPU. The method comprises the following steps of: judging whether an enabling watchdog feeding moment value is up; and at the enabling watchdog feeding moment value, sending a watchdog feeding enabling message to a watchdog feeding device. The method, the device and the single panel are mainly applied to abnormity detection of the embedded system.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a method, a device and a single board for feeding dogs in an embedded system. Background technique [0002] Watchdog is a technology that prevents programs from running away and falling into an infinite loop. It is widely used in embedded systems and has an irreplaceable role in system automatic reset. [0003] After the embedded system is powered on, it needs to go through several stages of boot loader program running, kernel program running and application running. During this period, when the system does not feed the dog on time, the watchdog circuit resets the system, and the system re-runs the corresponding boot program. At present, there are mainly three ways to feed the watchdog circuit: 1) Hardware feeding, 2) Software feeding, 3) Combining software and hardware. Specifically, 1) The hardware feeding of the dog passes a materialized circuit board containing a co...

Claims

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Application Information

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IPC IPC(8): G06F11/00G06F9/50
CPCG06F11/0757
Inventor 刘洪广廖义祥张羽
Owner HUAWEI TECH CO LTD
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