Research On VxWorks System Based On PowerPC7410 Processor

As a new generation of fighter planes continue to be outfitted,the avionics maintenance object is gradually being transformed from an operating system-free circuit board into a circuit board containing the operating system.For a long time,most of factory-repaired aircraft circuit boards use processors that do not run operating systems(including DSPs,FPGAs,and CPLDs).The maintenance of the board with the operating system are still blank.In order to meet the needs of the new type of on-board computer circuit board with operating system,the research on hardware design and software development technology based on PowerPC + VxWorks architecture is very urgent.Therefore,its topic selection has strong pertinence and important application value.According to the current situation of system research of VxWorks based on PowerPC processor,the paper designs and develops a PowerPC7410 processor-based system board and a PCI bus communication board,then develops,debugs and verifies the software for this circuit board.The thesis mainly completed the following research work:1 ?Through the analysis of system development process and key technologies,this paper puts forward the overall research ideas based on the research of PowerPC processor VxWorks system,then elaborates the specific development ideas of system hardware design and software design respectively.The research ideas laid the theoretical foundation for the subsequent hardware design,software development and system commissioning verification.2?For PowerPC7410 processor VxWorks system board research goals,this paper designed the minimum system board and bus communication board hardware modules,and describes the design process needs attention,built the hardware platform for the software development and system debugging and verification of VxWorks system BSP.3?According to the functional requirements of the system board,based on Tornado2.2,this paper developed a BSP including system initialization,serial port,network port,PCI bus and other hardware.According to the functional requirements of the bus communication board,based on the QuartusII9.1,this paper develops a DMA-based PCI bus to RS232 / RS422 bus send / receive software.This part of the article details the aspects that need to be noticed in the process of software development,and provides the software platform for the subsequent boot-up and startup debugging of the VxWorks system.4 ?Based on the PowerPC7410 hardware platform and the developed BSP software,the paperfirstly verifies the power-on reset of the system board,the memory space test,the Bootrom download and the system booting,and then tests the bus communication board in DMA mode Transmission function verification,and finally summarizes the aspects of the test verification needs attention.Experimental results verify its effectiveness.Through this topic,not only can we master the hardware design and software development ability of VxWorks system based on PowerPCprocessor,but also provide the technical support for the test and maintenance of VxWorks system onboard computer on a new generation fighter plane equipped with PowerPC processor.