msp430 i2c 液晶屏

89c51控制led点阵显示汉字,以及汉字的移动,就如公交车上的显示器-89c51 control led dot matrix display Chinese characters, as well as movement of Chinese characters, as buses display

应用背景这是通过Verilog硬件描述语言，在XILINX 公司的KINTEX-7系列的FPGA上实现的RS232串口通讯的功能。经过本人亲自验证，完全可以实现通讯的功能。关键技术本模块的功能是验证实现和PC机进行基本的串口通信的功能。需要在PC机上安装一个串口调试工具来验证程序的功能。程序实现了一个收发一帧10个bit（即无奇偶校验位）的串口控制器，10个bit是1位起始位，8个数据位，1个结束位。串口的波特律由程序中定义的div_par参数决定，更改该参数可以实现相应的波特率。程序当前设定的div_par 的值是0x104，对应的波特率是9600。用一个8倍波特率的时钟将发送或接受每一位bit的周期时间划分为8个时隙以使通信同步.

将CAN现场总线移植到UCOS2中的驱动程序，在BC中调试运行成功-CAN fieldbus will be transplanted to UCOS2 the driver, were in BC successful operation Debugging

Linux下用C来操作gsm modem, 初始化gsm modem.-Linux using C to operate the gsm modem, initialize gsm modem.

at9am55800启动源程序，简单易懂，初学者容易上手-at9am55800 boot source

多种CRC的算法解释和原理分析，并有原程序。可以在通讯和文件加密中使用-CRC algorithm multiple interpretations and principles of analysis, and the original procedure. The communications and the use of file encryption

arm嵌入式系统lpc22**错误的喂狗产生中断源代码-arm embedded system lpc22** wrong喂狗generate an interrupt source

u-boot源代码分析 u-boot源代码分析-a parse of u-boot code

多种时钟下的汇编延时程序，基于定时器的，精准-Compilation of a wide range of clock delay under the process, based on the timer, precision

用过EMC芯片的朋友都知道EMC的指令系统属于精简指令集（57条指令），这在做一些小程序时是非常方便的，但是如果程序较大，你就会发现，好多精力都被浪费在编写一些相似的指令上了，能否从中解脱出来呢？其实，如果你能善用EMC的宏指令，往往提高写程序的速度，并增加程序的可读性和可维护性-EMC Friend chips used all know EMC directive system are reduced instruction set (57 instructions), which make some small program is very convenient, but if a larger program, you will find that a lot of energy have been wasted in the preparation of some similar instructions on the can extricate themselves from it? In fact, if you can make the best use of EMC macros are often written procedures improve the speed and increase the program readability and maintainability