hyesco AT91RM9200 IIC source code

键盘，显示器接口管理芯片HD7279的应用源代码-Keyboard, display interface management chip HD7279 application source code

Hey. This some pid code for the atmega88 that I once used to control a heater. It s purpose is pretty specific, and I only wrote it to work on the mega88, so the code itself won t be too useful. It is a good place to start if you re trying to use or figure out pid though.

adhoc信息节点程序源代码（点对多点）――for atmega128-ADHOC information source code node (point-to-multipoint)- for atmega128

lpc213_ads7843_sed1335 Arm MCU控制触摸屏和液晶屏-lpc213_ads7843_sed1335 Arm MCU control and LCD touch screen

TI公司16位单片机msp430的14系列的开发demo，很有价值。-TI MCU Controller 16 of the 14 series of demo development and of great value.

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.

ARM公司的编辑器使用手册，中英文对照，相当不错，值得一看，对ARM学习有帮助。-ARM s editor user manual in English, quite good, worth a visit on the ARM study helpful.

PIC MCU USB Keyboard/Mouse Combination Device C sample

东南大学开发ARM7芯片sep4020的key+tft程序代码-Southeast University to develop ARM7 chip sep4020 the key+ Tft code