1. Introduction The purpose of this project was to embed a real time kernel on the microcontroller ATmega128L and demonstrate the multitasking capability through an application running on the STK 500/501 board. The MicroC/OS-II was chosen as the operating system because of its: simplified design process, preemptive RTOS time critical events which could be handled quickly and efficiently, better usage of resources by providing valuable services like mailboxes,queues,semaphores. Contact info: Insert Names and Email Addresses of team members and faculty mentor here. University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, NC 28223 ATMEL ATmega128L is the microcontroller used for the board. This low power, high performance AVR® 8-bit microcontroller has an operating voltage range of 2.7V to 5V. It also has 128K in- system programmable flash, 4K internal RAM, and JTAG interface for programming. AVR Studio® is an Integrated Development Environment for writing and debugging AVR applications in Windows® 98/XP/ME/2000 and Windows NT® environments. AVR Studio provides a project management tool, source file editor and chip simulator. TEST SET UP The above figure is a hardware layout of the test set up. The STK 501 board with the ATmega128L chip sits on top of the STK500 board. The LEDS are connected to the respective ports through the connectors. The boards are powered through the JTAG mk11. MicroC/OS-II MicroC/OS-II is a highly portable, ROMable, scalable, preemptive real-time, multitasking kernel (RTOS) for microprocessors and microcontrollers. Written in ANSI C for maximum portability, MicroC/OS-II has been ported to more than 40 different processor architectures ranging from 8- to 64-bit CPUs. Certifiable for use in safety-critical systems, this RTOS has been proven to be robust, reliable, and safe enough to use in your own applications. CONCLUSION Through this project, we understand that porting a real time kernel to any microcontroller can be adapted in a similar fashion. With a thorough understanding of operating system concepts, the principle can be applied across any microcontroller and potentially tap their inherent capability. Sponsor’s Name (or Department’s Name if not Industry Sponsored) Project’s Name Team Member’s Names Faculty Mentor: Jack Smith, Industry Mentor: John Smith (if applicable) Research Highlights A considerable amount of research was done in porting a real time operating system to the ATmega 128L. The source code for the MicroC/OSII was integrated with the port file configurations for the microcontroller. A board support package for the hardware configurations was also created. After the operating system was ported, a simple application was run on the target board which involved blinking one of the two LED’S alternately, thereby demonstrating the multitasking capability. APPLICATION SOFTWARE (Your Code!) UC/OS-2 (Processor-Independent Code) UC/OS2 Configuration (Application- Specific) UC/OS2 Port (Processor specific code) CPU Software Timer Hardware UC/OS2 Hardware/Software Architecture Lee College of Engineering Senior Design