The Design Of RTOS Fascia Based On OSEK/VDX

With the rapid development of science and technology in recent years, the auto industry had been one of the most quickly developed industries in our country, which brought huge development space to auto-electron. The abroad electronics'application lifted electronic-automobile, internet-automobile and intelligentized-automobile , meanwhile 70 percent's technology renovation in auto industry came from auto electronic products. Increasingly ampliative auto-electronic market had become new economic growth point to information industry, therefore the research and development of new generation automobile instrument information systems had very important significance.Based on the analysis of domestic automobile instrument information systems'development trend at present, the paper brought forward embedded automobile instrument information systems CCU's design based on OSEK/VD criterion. The CCU's disposal core was Freescale's 16-bit singlechip--MC9S12DG128, and its software followed open distributing control standard OSEK/VDX with many control units. AsμC/OS-II was the real-time operating system kernel, the CCU communicated and exchanged data with numeric instrument through LIN bus, and through CAN bus the CCU exchanged data, put out control command with other units. Besides, the CCU had reliability and EMC performance demanded by vehicle electronic equipment.Based on the embedded-tech and with the background ofμC/OS-II real-time embedded operating system, the paper introduced the model of plantingμC/OS-II based on MC9S12DG128 and developing drivers, and the paper expatiated the open distributing control standard OSEK/VDX with many control units used in automobiles, the auto black casket's design and the auto milestone data's conservation arithmetic.The paper's automobile instrument information systems CCU design had been by trial and error method, succeeded to run in the automobile and called for the design. The open distributing control standard OSEK/VDX and the auto real-time operating system discussed by the paper had provided referenced experiences for the vehicle electronic software's design.