基于ARM7 的嵌入式系统上开发USB接口的详细内容

整理内存碎片程序,介绍获取内存信息等操作-Clear memory

从真彩到s3c44b0256 LCD取模源代码,用来做嵌入式系统中lcd的汉字显示-to s3c44b0256 from color LCD module from the source code used in embedded system the Chinese character LCD display

广嵌的S3C2410开发板给的U-BOOT很是经典，是学习bootloader的好资料，识货的赶快下！-Canton inlay of S3C2410 development board to the U-BOOT was a classic, is a good learning bootloader information, know all about the goods under the hurry!

相当不错的源码，希望对大家有用，里面有CCD摄像头的驱动及应用程序，大家可以参考其设计模式-a ARM7 CCD pro.

imx31 bsp,have camera,iic,usb,gps,power,lcd,touch panel driver.

这是LPC2119/2129/2292/2294通用的通用GPIO程序，供大家参考。-This is a generic LPC2119/2129/2292/2294 generic GPIO procedures for your reference.

这是一个原始的DT930的运行程序！直接下载到DT930中就可以使用！-This is a primitive operation procedures DT930! Directly downloaded to the DT930 can be used!

hffmancode队列的插入删除处理 -insert delete hffmancode queue handle

优龙开发板YL2410的bios完整代码，即bootloader的代码，对开发板的学习很有用的-YL2410 bootloader

这是一个不到2000行的操作系统，巧妙地利用ARM9 CPU的内存管理单元(MMU)实现进程的切换。ARM9的4G虚拟地址可分成128个进程空间，每个32M。虽然它们的虚拟地址(VA)都是0-(32M-1)，但是对应的MVA(Modified vitual address,由虚拟地址VA和进程号PID组合而来)不一样，设置MVA对应的页表指向不同物理地址就可以很方便地让各进程运行空间相互隔开。代码很少，注释丰富，希望能对想理解操作系统、了解ARM体系结构的朋友有所帮助。 -This is a trip of less than 2000 operating system, cleverly using ARM9 CPU memory management unit (MMU) to achieve the switching process. ARM9 4G virtual address can be divided into 128 process space, each 32M. While their virtual address (VA) are 0- (32M-1), but the corresponding MVA (Modified Virtual address, and by the virtual address VA and the process of portfolio from PID) not the same, set MVA corresponding page table at the different physical address can be very easy to let the the process of separating the mutual operation of space. Code rarely Notes rich, in hopes of understanding the operating system, understanding the ARM architecture friends help.