ARM体系结构与应用系统设计示例

sd卡模块， mcu控制、 通用 lpc2294 周立功公司-sd－card module

周立功smartarm2200板子RTC例子-Week smartarm2200 Ligong example board RTC

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.

最新版IAR511下AT91SAM7S64的TWI俐程-AT91SAM7S64 under IAR511 the latest version of the TWI-li Cheng

lpc2131 ssp主站底层驱动源代码，同时包含演示工程-lpc2131 ssp master low-level driver source code, demonstration projects that contain both

周立功公司为LPC213X ARM7 编写的SD卡读写模块，很详细的注释。-Zhou Ligong LPC213X ARM7 prepared for the SD card reader module, a very detailed notes.

在proteus仿真平台上移植ucos到lpc2106的流水灯实验。-Simulation in Proteus platform uCOS transplantation into the water lights LPC2106 experiment.

直流电动机双极性可逆双闭环PWM控制程序-DC motor bipolar PWM reversible double-loop control procedures

STC51平台，KEILC环境，24C04读写驱动-STC51 platform, KEILC environment, 24C04 literacy drive

dsp开发材料，来自于TI，英文。对于初学者有用-dsp development of materials, from TI and English. Useful for beginners