Built-in real-time system interrupt handling device and method thereof

Abstract

The invention provides an interruption process device for embedded real-time systems; the device comprises an interruption response module, to perform interruption process after an interruption signal is triggered, in order to trigger a base layer interruption callback process module; a base layer interruption callback process module, to perform process according to interruption types; the interruption process results will be released into an interruption muff-coupling layer awaiting task process module through a synchronism mechanism and a task queue; the interruption muff-coupling layer awaiting task process module, to acquire task under process from the interruption task queue, search a muff-coupling layer callback function list, so as to perform interruption assortment and process. An upper-layered interruption callback initialization module, through upper-layered trigger calling through an embedded real-time operation system, performs initialization and registration operation for a muff-coupling layer callback function list. The invention also provides an interruption process method for embedded real-time systems. The invention can guarantee real-time performances and stability of the system.

Description

technical field [0001] The invention relates to the field of embedded systems, more specifically, to a device and method for interrupt processing of an embedded real-time system. Background technique [0002] With the rapid development of embedded technology, embedded real-time operating systems are being more and more widely used in various fields such as industrial automation, electronic communication, and home appliances. At the same time, the platforms on which the embedded operating system runs are becoming more and more diverse, and the processing of various interrupt sources is becoming more and more complicated. In this case, in order to ensure the system stability and real-time performance of the embedded platform in the process of processing interrupts, the original interrupt processing technology has also been continuously developed. [0003] The interrupt processing method currently used in embedded real-time systems mainly includes the following processes: (1) ...

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Problems solved by technology

[0006] No. CN200610154795.7 Chinese patent application has the following deficiencies: One, although this patent adopts component technology to realize embedded operating system interrupt processing from the perspective of kernel software engineering management, it increases the processing time in the interrupt context and increases It increases the complexity of the system, thereby affecting the CPU's real-time response to other interrupt events, and in some cases will sacrifice the real-time performance of the system; 2. In addition, in the case of too frequent interrupts, the CPU of the embedded operating system will be in a dead state. Loop state, the kernel cannot schedule and respond to other tasks, causing system crashes or seriously threatening system stability

[0007] No. US6574694 U.S. Patent has the following deficiencies: 1. Although in this patent, a simple filtering process is carried out to the interrupt event, it cannot fundamentally solve the situation that the system crashes when the interrupt report is too frequent; 2. In the case of various devices and complex interrupt processing, it will affect the real-time performance of the system to respond to interrupts

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