Linux下中断方式的设备驱动程序设计

Design of device drivers based on interrupt under Linux

中断处理是嵌入式Linux操作系统的核心任务之一,提高应用程序效率的关键技术是在设备驱动程序中使用中断方式。本文介绍了ARM Linux中断处理过程,研究了Linux下设备驱动程序及其中断服务程序的开发方法和技巧,并实例介绍了键盘中断的服务程序开发方法。

Interrupt Processing is one of the kernel tasks in embedded Linux operating system. In order to improve application＇ s efficiency, the key technology is how to make good use of interrupt in device drivers. This paper introduces the ARM Linux interrupt processing and studies the developing methods and technologies of device drivers and interrupt service program under Linux. At the same time, the author examples device driver of keyboards based on interrupt.