Method and system for implementing driving on SPI equipment under VxWorks operating system

Abstract

The present invention relates to a method and system for implementing driving on SPI equipment under a VxWorks operating system. The VxWorks operating system comprises an application layer, a kernel layer and an SPI equipment driving layer. The method adopted by the VxWorks operating system comprises: acquiring custom SPI equipment component description file and SPI driver registry function prototype from the SPI equipment driving layer; according to the custom SPI equipment component description file and SPI driver registry function prototype, forming a compiling rule for an SPI driver; according to the compiling rule, carrying out register on the SPI driver on the kernel layer and initializing the SPI driver, wherein the step of initializing the SPI driver comprises the substeps of setting SPI driver interruption and operations corresponding to the SPI driver interruption and setting a sending cache region and a receiving cache region on the kernel layer; enabling the SPI equipment driving layer to carry out data interaction with the sending cache region and the receiving cache region of the kernel layer by SPI driver interruption; and enabling the kernel layer to carry out data interaction with the application layer by an application interface. According to the method and system for implementing driving on the SPI equipment under the VxWorks operating system, the coupling degree of codes can be reduced and stability and reliability of the SPI communication are improved.

Description

technical field [0001] The invention relates to the technical field of power distribution automation, in particular to a method and system for driving SPI equipment under the VxWorks operating system. Background technique [0002] Currently, the Wind River WorkBench 3.3 development platform provided by Wind River in the United States does not provide a standard SPI (Serial Peripheral Interface, Serial Peripheral Interface) driver development model. Driver development engineers under the VxWorks operating system in the industry mainly use the SPI of the single-chip microcomputer. Driver development model and traditional I / O device driver model development model to develop SPI device drivers. [0003] (1) SPI driver development model for MCU [0004] The SPI driver development model of the MCU is a custom driver development model. During the driver development process, the following tasks need to be completed: write the establishment of the cache, initialize, add data, and ge...

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