基于Linux的TW2835的驱动程序设计与实现  

Design and implementation of TW2835 driver based on Linux

作　　者：于海彬[1] 张雪[1] 陈兴林[1] 

机构地区：[1]哈尔滨工业大学航天学院,黑龙江哈尔滨150001

出　　处：《计算机工程与设计》2013年第9期3068-3073,共6页Computer Engineering and Design

基　　金：国家科技重大专项基金项目(2009ZX02207)

摘　　要：为实现视频采集芯片TW2835在嵌入式Linux下的控制,对TW2835的工作流程进行了深入的分析,以飞思卡尔i.MX53控制器为硬件平台,Linux2.6.35为软件平台,利用V4L2驱动模型和I2C驱动体系,提出了利用模块化思想实现Linux下TW2835驱动的设计方法。测试结果表明,该驱动可同时支持4路视频采集,输出视频图像质量清晰稳定,且利用多片TW2835芯片可扩展多路视频采集系统,在嵌入式数字监控设备中有广泛的应用前景。To achieve the goals that video capture chip TW2835 can be controlled based on embedded Linux system, the basic functions and workflow of TW2835 are described. Using Freescale controller i. MX53 as hardware platform and Linux 2.6.35 as software platform and analyzing V4L2 driver model and I2C driver system, TW2835 driver design method based on Linux is pro- posed according to modular idea. The test results show that the driver can support 4-channel video capture and output video im- age quality is clear and stable. TW2835 can be extended to multi-channel video capture system and it would be broadly applied in embedded digital surveillanee equipment.

关 键 词：嵌入式LINUX TW2835芯片 驱动设计 数字视频监控 V4L2驱动模型 I2C总线 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]