Complex Priority Inheritance in real time operating System for 8-bit Microcontroller

This paper presents a complex priority inheritance (CPI) for real time operating system (RTOS), which introduces CPI for assigning priority for system task and compares it with traditional simple priority inheritance (SPI). However, it has been proved here that CPI has more priority resolving power than SPI. Also as number of task is increased or decreased the deadline adherence changes in SPI, while the same is maintained in CPI. Atmel’s In-System Programming software is used to download program into the microcontroller flash memory and the board is capable of hosting various microcontrollers from the AVR family.