Interrupt processing method and device and interrupt controller

A processing method and technology of central processing unit, applied in the field of communication, can solve the problems of large occupied area and many logics, and achieve the effect of saving area, simplifying software process, and reducing the number of logics

Active Publication Date: 2014-03-12
SANECHIPS TECH CO LTD
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Problems solved by technology

[0013] Aiming at the problem that the interrupt controller in the related art uses more logic and occupies a larger area, the

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  • Interrupt processing method and device and interrupt controller
  • Interrupt processing method and device and interrupt controller
  • Interrupt processing method and device and interrupt controller

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[0043] Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict.

[0044] For the interrupt controller in the related technology, synchronous sampling is adopted when performing interrupt processing, which easily leads to the risk of loss of sampling signals, and the handshake process is relatively complicated. Based on this, the embodiments of the present invention provide an interrupt processing method, device, and interrupt controller, which simplifies the handshake process and reduces the logic of the interrupt controller, which will be described below through embodiments.

[0045] image 3 Is a flowchart of an interrupt handling method according to an embodiment of the present invention, such as image 3 As shown, the method includes the following step...

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Abstract

The invention provides an interrupt processing method and device and an interrupt controller. The method includes the steps that a CPU receives an interrupt request sent by the interrupt controller, executes interruption corresponding to the interrupt request and writes in a first value in the interrupt controller, wherein the first value is used for indicating that the CPU receives the interrupt request; after the CPU executes the interruption, the CPU writes in a second value in the interrupt controller, wherein the second value is used for indicating that the CPU finishes execution of the interruption. According to the interrupt processing method and device and the interrupt controller, the problems that in the relative technique, an interrupt controller uses much logic and occupies a large area, by means of asynchronous sampling, loss of an interrupt signal is avoided, software procedures are simplified, and accordingly the effects that amount of the logic of the interrupt controller is reduced and the area is saved are achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular to an interrupt processing method, device and interrupt controller. Background technique [0002] In the related art, the sampling method of the interrupt controller mostly uses the input interrupt source to be sampled through the three-level register, and judges whether there is an effective interrupt according to the sampling result and the pre-configured interrupt sampling mode. This method requires that the input asynchronous interrupt signal must be valid for at least one clock cycle, otherwise the interrupt may be lost. Moreover, this method is relatively complicated to implement, and if there are too many instantiated sampling modules, the area of ​​the interrupt controller will be greatly increased. [0003] figure 1 is a processing flowchart of an interrupt controller according to the related art, such as figure 1 As shown, the process includes the following steps (step...

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Application Information

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IPC IPC(8): G06F9/48
Inventor 刘琳童甘焱林
Owner SANECHIPS TECH CO LTD
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