Efficient Interrupts on Real Time Operation System

Abstract

The design of real-time embedded systems involves a constant trade-off between meeting real-time design goals and operating within power and energy budgets. Nowadays, embedded systems are commonly applied in automotive industry. Some of applications require strict time response, and others need to be exactly scheduled to execute a period task. All of these are called time-sensitive applications. Measuring and evaluating time parameters of an embedded system for time-sensitive applications is very necessary for developers to guarantee that it works functionally. By managing the interaction with external systems through effective use of interrupts can dramatically improve system efficiency and the use of processing resources. An interrupt handler is part of an embedded system of real-time operating system (RTOS). An interrupt handler is to handle the tasks according to the priority. This paper explores how to handle interrupt among the priority based periodic tasks (independent threads) by using architectural features of H8/3069 FZTAT ™ microcontrollers.