| Embedded operating system is mainly responsible for the embedded system software and hardware resource scheduling, distribution, control and coordination concurrent activity. EOS must be able to its characteristics of the System is reflected, and be able to install to unload some module to fulfill the System the required functions. When the traditional embedded system meet the real-time requirements more stringent when complex function or meet, it will expose the weakness of single task mechanism.μC/OS-Ⅱoperating system kernel with real-time and multitasking appeared, in task management with strong functions.This project aims to analysisμC/OS-Ⅱkernel and muonμC/OS-Ⅱthe real-time performance of the operating system, and the MICROCHIP company transplanted into the United States PIC18F452 8-bit microcontroller in their successful operation and can achieve more resources management and multiple tasks scheduling. WillμC/OS-Ⅱapplied in eight MCU project research, and it can improve system operation in the stability and improve the accuracy of the task execution time. In addition, through the analysis ofμC/OS-Ⅱoperating system kernel, and can find its key technology is not suitable for eight microcontroller PIC18F452 part, through the improvement in the 8-bit microcontroller will be implemented on PIC18F452.This paper fromμC/OS -Ⅱof the operating system for transplantation purpose and significance ofμC/OS, and an operating system kernel -Ⅱare analyzed, and then introduced the PIC18F452 transplanted into SCM system, and the detailed process of its key technology to improve. The last is to transplant results and improve test result. Test results show that the system can run on the 8 bit MCU PIC18F452. |
PDF Full Text Request