摘要
随着现代电子技术的发展,各种存储设备的应用越来越广泛。其中以SD存储卡的应用最为广泛,但是由于在传统的底层硬件体系结构中,一个接口只能连接同种设备,这其实是对现有的资源的浪费。在此提出一种通过AVR单片机和串行转USB接口来读取SD卡中数据的方案,真正做到了通过单片机和计算机对各种外设的双向读取,通过常规文件系统的读取方式的改进,能够兼容各种外部设备使其便携性进一步增强,进一步提高了已有资源的利用率,能通过单片机和计算机对存储信息进行有效的管理。实验证明单次读取成功率能达到99.8%,因此在数据读取的稳定性和安全性上是有保障的。本设计具有一定的社会价值和经济价值。
the SD memory card is applied widely with modern electronics technology.Due to an interface can only be connected to the same kind of equipment in the traditional underlying hardware architecture,which is a waste of resources.A scheme of using AVR microcontroller and serial transfer through the USB interface to read SD card data,the bi-directional reading through a variety of microcontrollers and computer peripherals is achieved,the external devices are compatible by improving the read method of conventional file system,which improves the utilization of existing resources and portability,the storage information can be managed through the microcontroller and the computer.The experiment proves the success rate of a single reading can reach 99.8%,therefore,the stability and security of the data read is guaranteed.
出处
《现代电子技术》
2010年第16期166-168,共3页
Modern Electronics Technique
