Serial port interrupt processing method and device based on VxWorks system

Abstract

The invention provides a serial port interrupt processing method and device based on a VxWorks system. The method comprises the steps that an interrupt request sent by a serial port device and an interrupt number corresponding to a serial port are acquired through the serial port, the interrupt serial port device sending the interrupt request and an interrupt type corresponding to the interrupt request are searched for according to the interrupt number, and corresponding operation is executed on the interrupt serial port device according to the interrupt type. Through the technical scheme, operation is only performed on the serial port device sending the interrupt request, and therefore the problems that through existing serial port driving interrupt processing methods, interrupt processing operation is executed on other serial port devices which share the same interrupt number and do not have an interrupt request, consequently, the running process of other serial port devices without the interrupt request has an error, the burden on an operating system is increased, and the stability of the operating system is lowered are solved.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a method and device for processing serial port interruptions based on the VxWorks system. Background technique [0002] Universal Asynchronous Receiver / Transmitter (UART for short) is an asynchronous transceiver, which is a part of computer hardware. It is used as a transmission conversion tool between serial communication and parallel communication, and as a parallel input conversion A chip with serial output is usually integrated on other communication interfaces. When UART is used to transmit data, it is called a serial port. [0003] The VxWorks operating system designed and developed by Wind River Corporation of the United States is an embedded operating system, which usually improves the communication capability of the system by expanding multiple serial ports, and makes the expanded multiple serial ports share an interrupt number. Specifically, when the CPU receives the...

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Problems solved by technology

[0005] The present invention provides a serial port interrupt processing method and device based on the VxWorks system to solve the problem that the existing serial port driver interrupt processing method will perform interrupt processing operations on other serial port devices that share the same interrupt number and have no interrupt requests, resulting in other serial port devices without interrupt requests. An error occurs during the operation of the serial port device, which increases the burden on the operating system and reduces the stability of the operating system

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