Study of µCOS RTOS on Low Cost Microcontroller

Abstract: Numbers of RTOS products from various vendors are available in the market, �C/OS-II a freeware with minimum facility is more popular among the hobbyist, researchers and small embedded system developers. In this project LCD is interfaced with the microcontroller using Serial interface. Four tasks are created using �C/OS-II RTOS. Task1 is for manage all other tasks from task create to delete. Task2 for reading characters from key board.Task3 for Displaying the entered characters on Hyper Terminal when ENTER key is pressed. Task4 for Displaying message on LCD when SPACE key is pressed. The software tools SDCC Compiler and ATMEL FLIP tool are used for implementation of tasks using �C/OS-II RTOS on AT89C51ED2 embedded development board. The result obtained indicates that best suitable for small scale industrial automation.

Keywords: SDCC, Keil IDE, �C/OS-II RTOS, Flash Magic and Embedded Development Board.