linux kernel

使用键盘上的上、下、左、右四个按键，可以分别控制led1,2,3,4,每个LED 对应的Port 请参考“实验平台介绍”说明文档。要求按下 上面提到的四个按键中间的一个按键后，该按键对应的led 被点亮，持续1 秒钟以后led 熄 灭。-Use the keyboard on the upper and lower, left, and right buttons, can control led1, 2,3,4, each LED corresponding to the Port, please refer to " experiment on" documentation. Requirements of the four above-mentioned press the middle button of a button, the button that corresponds to being light led, continuous 1 second later led out.

MSP430驱动12864-3图形点阵液晶-MSP430 dot matrix LCD driver graphics 12864-3

c8051f060LED闪烁程序，帮助开发新手蜕变到老手的一流程序

S3C2410上GPS模块的驱动代码.ADS1.2编译工程,附文档.-S3C2410 on GPS module driver code. ADS1.2 compiler works attached document.

9908 samsung tool soft

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

arm9的LINUX图解，很不错，推荐。-ARM9

直流电机调速系统，IAR软件可打开程序，经测试可用。采用闭环调速，PID控制。基于ARM7的LPC21xx系统控制，电路图用PROTEUS仿真开发。都在压缩包内。

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.

9200板的LCD显示控制程序,使用的是S1D13506显示芯片。-9200 board s LCD display control program，with S1D13506 chip driver. and so on.