Embedded system interruption control method and apparatus
An embedded system, software watchdog technology, applied in hardware monitoring, instrumentation, error detection/correction, etc., can solve problems such as inability to interrupt analysis, inability to further determine the type of interrupt exception, equipment disorder, etc.
Active Publication Date: 2008-12-31
ZTE CORP
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Problems solved by technology
[0003] Whether it is for a large communication system or a small handheld embedded device, interrupt exceptions may cause device disorder
Therefore, since the monitoring of embedded system interrupts has not been realized at present, when an interrupt occurs, the system can only continue to run through the reset of the hardware watchdog system, and the type of interrupt exception cannot be further determined, so that the interrupt cannot be analyzed and analyzed. To fundamentally solve the recurrence of similar problems
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[0020] The present invention will be further described below in conjunction with the accompanying drawings.
[0021] refer to figure 1 , an interrupt monitoring method for an embedded system, comprising the following steps:
[0022] S101: Monitor the embedded system, collect the latest time point Ta when the embedded system enters the interrupt, the latest time point Tb when the embedded system leaves the interrupt, all the current accumulated interrupt overhead Di of the embedded system, and the latest software watchdog task The time point Tc of a normal operation and the interrupt overhead Dc accumulated by the embedded system during the latest normal operation of the software watchdog task;
[0023] S102: After the hardware watchdog system of the embedded system is reset, according to the collected Ta, Tb, Tc, Di, Dc and the reset period Pc of the hardware watchdog system, the running period Ps of the software watchdog task, The clock interrupt period Pt of the embedded s...
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The invention discloses an interruption monitoring method and a corresponding apparatus used for an embedded system. The interruption monitoring method includes the following steps: a. the embedded system is monitored and the latest interruption access time-point Ta of the embedded system, the latest interruption retreat time-point Tb of the embedded system, the present accumulated total interruption overhead Di of the embedded system, the latest normal work time-point Tc of software watchdog task and the accumulated interruption overhead Dc during the latest normal work time of the software watchdog task are all collected; b. after hardware watchdog system of the embedded system is reset, interruption exception types of the embedded system can be defined according to the collected Ta, Tb, Tc, Di, Dc and the reset period Pc of the hardware watchdog system, the work period Ps of the software watchdog task and the clock interruption period Pt of the embedded system. The technical proposal of the invention realizes the interruption monitoring to the embedded system.
Description
technical field [0001] The invention relates to an interrupt monitoring method and device, in particular to an interrupt monitoring method and device for an embedded system. Background technique [0002] With the rapid development of embedded technology, embedded systems are more and more widely used in various fields such as industrial automation, electronic communication, and home appliances. When an embedded system is interrupted, there may be exceptions such as software watchdog task exception, too many interrupts, interrupt infinite loop, and interrupt shutdown. [0003] Regardless of whether it is a large communication system or a small handheld embedded device, an interrupt exception may cause the device to panic. Therefore, since the monitoring of embedded system interrupts has not been realized at present, when an interrupt occurs, the system can only continue to run through the reset of the hardware watchdog system, and the type of interrupt exception cannot be fu...
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IPC IPC(8): G06F11/30G06F11/00
Inventor 傅仁武梁金祥
Owner ZTE CORP