ra8875 driver

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

该PDF讲述了怎样在EWARM中进行开发stm32f10x系列，对初学者很有帮助。-The PDF describes how to develop in the EWARM in stm32f10x series of very helpful for the beginner.

该代码实现的是路由器收发的功能。这种功能为了实现Bacnet楼宇设备间设备而设计的。BACnet是一个为嵌入式系统实现的BACnet （楼宇自动化和控制网络）专门协议。 BACnet本身就是一个标准的路由协议设计用于处理通信自动化的建筑，如空调系统和其他暖通设备。楼宇自动控制网络数据通讯协议（即： A Data Communication Protocol for Building Automation and Control Networks，简称《BACnet协议》）由美国暖通、空调和制冷工程师协会(ASHRAE ) 组织的 标准项目委员会135P (Stand Project Committee即SPC 135P)历经八年半时间开发的。

Samsung nand flash MEMORY ECC结构和检验-Samsung nand flash MEMORY ECC structure and test

英倍特的有关三星嵌入式开发技术介绍的ppt文章，是有关44bo的-British special times of the Samsung embedded development technology introduced ppt articles of the 44bo

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.

2440开发板的硬件接口使用手册，好东东呢-2440 development board hardware interface user manual does a good Dongdong

at91rm9200 全部的驱动程序源码，这些都是我的收藏精品-at91rm9200 all of the driver source code, those are my excellent collection

STM32串口调试代码，使用串口3重映射，KEIL调试通过，竟然忘了开映射时钟，导致多花了好多时间，这样能为遇到同样问题的朋友节省时间了。

本文详细介绍了S3C44B0中断系统，是初学arm嵌入式系统的理想入门材料，对ARM嵌入式系统的开发者也有很好的参考价值-This paper describes the S3C44B0 interrupt system, arm embedded system is a learning portal an ideal material for ARM embedded systems developers have a very good reference value