linux高速串口收发程序,Linux的DMA高速串口驱动的设计

摘要: 基于现有的Linux普通方式传输的串口驱动，提出了通过利用DMA的高速串口驱动，根据传输时的实时数据量，利用DMA方式和普通方式相结合的方式进行数据传输，大大提高了传输速率，同时降低了系统的开销，减少了CPU的使用。在双核移动终端中进行验证，两芯片通过串口进行芯片间通信，实验结果证明了设计的高速串口驱动具有较好的可靠性和可行性。

关键词: DMA方式；Linux高速串口驱动；芯片间通信

中图分类号: TP36.2文献标识码: A

Linux High Speed Serial Driver Design

Qiao Mingchuang, Peng Daqin, Huang Yifeng

Chongqing Key Lab of Mobile Communications，Chongqing University of Posts and Telecommunications，Chongqing 400065，China

Abstract： This paper proposed high speed serial port driver using DMA is based on Linux serial port driver working in normal mode. According to the volume of data in realtime transmission,we decided to combine DMA mode with normal mode to transfer, greatly improving the transmission rate. In the same time it also reduces the overhead of the system and reduces the CPU utilization. In dualc