U 盤作為一種便利的存儲設備,可以應用于嵌入式系統中,其應用的基礎就是對Linux 的USB Mass Storage 驅動的裁剪,以獲得所需的簡化的驅動程序。分析了Linux 下的USB mass storage 協議,簡化系統中所不需要的代碼,使其僅支持基于Bulk-Only 傳輸模式下的ATAPI 協議的存儲設備,從而使嵌入式系統更加精簡,對USB mass storage 驅動程序進行了裁剪。經過裁剪的USB Mass Storage 驅動程序移植到三星公司的QT2410E 開發板上并取得成功。
提出了一種以ARM微處理器為控制核心的遠程無線視頻監控終端的設計方案,其監控終端的硬件設計包括視頻采集處理、中央管理控制、無線傳輸3個模塊。并給出了監控終端的軟件開發平臺和開發模式的系統啟動代碼、嵌入式Linux系統移植以及驅動程序和應用程序。測試結果表明,該監控終端設計方案合理、有效,基本滿足監控需求。
Abstract:
A remote wireless video monitoring terminal design, which uses ARM microprocessor as its core control, is proposed in this paper.The hardware design of monitoring terminal system is composed of the video acquisition and processing module, the central management and control module, wireless transmission module.Meanwhile the monitoring terminal-s software development platform and development patterns are designed. Also the design of the system-s start codes, embedded Linux system-s transplantation process, driver and the corresponding applications are given. The results showed that the monitoring terminal design is reasonable, effective, basically meet monitoring requirements.