Lcd project with ARM9261

protues仿真ARM ARM的I2C，SPI,LED显示，以及把UCOSII操作系统加载到ARM 的原代码-protues simulation ARM ARM I2C, SPI, LED display, and to UCOSII loading of the operating system source code, ARM

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.

JTAG协议分析软件,配合周立功的LA1032逻辑分析仪使用,可以观察各种JTAG仿真器的通信过程.-JTAG protocol analysis software, with Zhou meritorious LA1032 logic analyzer use, can observe various JTAG Emulator for the communication process.

1.此代码在SDT2.51下调试通过，可以在我的板子ARM DEVELOP BOARD V1.0上面跑！其上电以后LED会闪烁一下，接着串口0会输出一些系统信息 可以通过串口终端与系统交互，可以测试320X240 STN LCD,包括图形显示函数，ascii字符显示函数。-1. This code debugging under the SDT2.51 passed, in my plank ARM DEVELOP BOARD V1.0 above run! After its power LED flashes that went 0 serial output will be some system information through serial terminal and system interaction, can test 320x240 STN LCD, including graphics function, ascii character display function.

uart.tar, 龙珠i.Mx21上的串口驱动程序，运行平台为ADS1.2-uart.tar, Pearl i.Mx21 the serial driver, operating platform for ADS1.2

S3C44B0X 开发板PWM Demo程序,主要是测试了PWN的功能,可以做为通用程序-S3C44B0X development board PWM Demo procedures, the test is mainly OWN function can be used as a general program

intel的PXA255芯片的中文资料，绝对详细的说明整块芯片的任何部件以及寄存器的设置和使用，是难得的资料，12M的文件足以看到它的份量了-The PXA255 chips intel Chinese data, the absolute detail of the entire chip, as well as any components register to set up and use, the information is a rare, 12M documents sufficient to see it the weight of the

远程抄表系统程序，是电力线载波通信的，用汇编编写。

arm编程的一本书籍，写的比较详细，可以学习学习-programming arm of a book and write a more detailed, can learn from

友坚2416的核心板 c语言编程 sd卡驱动程序 检测fat32文件系统并读取fat32文件