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基于LPC2148用SD卡实现嵌入式系统升级的应用设计

消耗积分:5 | 格式:rar | 大小:660 | 2010-12-20

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 在嵌入式系统中，为了实现设备终端的内核、文件系统升级和设备功能维护，一般是将目标板连接到主机，通过JTAG口、串口或网口来实现升级。在此，提出一种更为方便的升级方法，即利用LPC2148用户，只需通过SPI方式对发送的SD卡进行底层驱动，运用SD卡文件系统、IAP编程接口方式和程序跳转，即可达到系统升级和维护的目的。不仅与用户交互方便，且可节约大量的人力、财力和时间。该方案同样可用于ARM7和ARM9。
Abstract:
 In embedded system, the objective board and host board are always connected to upgrade through the JTAG, serial interface or network，in order to upgrade the kernel，file system and the maintenance of equipment function of the terminal. A more convenient way of upgrading is provided, which is based on LPC2148.After the users insert the SD card,the system can be upgraded and keep maintenance by the driver for SD card,the organization of file system,IAP programming interface and jumping code are implemented through SPI interface.It is not only convenient to communicate with the users,but also save a lot of manpower, finance and time. The design also can be used in ARM7 and ARM9.
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