ATMEL单片机开发的MP3及U盘代码

工程师在用Keil开发程序时，在代码性能要求较高的场合，需要对代码段的执行时间作统计。比如在做LED显示屏软件扫描程序，或一些定时采集数据程序，如果在软件仿真的时候就能够清晰知道代码段的运行时间，那就可以对程序进行优化，或者插入汇编代码(asm)达到最高运行速度。 关键字:Keil DLL C语言 ASM 汇编-engineers in the development process with Keil, the code performance requirements higher occasions, need to block the execution time statistics. For example, in the software do LED scanning procedures, or some regular data collection procedures, If the software simulation time can understand clearly code of the running time, it can process optimization, or insert code compilation (asm2) to achieve maximum speed. Keywords : Keil DLL C language compilation ASM

单片机控制8251a编程-SCM control 8251a Programming

这是一个mega128单片机通过spi口读写串口flash的程序，已经记过验证-This is a microcontroller through mega128 spi I read and write the serial flash procedures, Verification has demerits

利用无线模块开发的报警器源程序，此程序已在产品中使用-The use of wireless module developed by alarm source, this procedure has been used in the product

用C8051F040实现DA（模拟-数字）变换。C8051F040集成了12位精度的DA转换器。-With the C8051F040 to achieve DA (analog- digital) conversion. C8051F040 integrates a 12-bit accuracy of the DA converter.

ocmj15X20触摸屏程序，欢迎大家下载-Touch Panel ocmj15X20 procedures

sl811usb芯片与51的文件系统-a filesystem about USB chip sl811 and 51

关于sd卡２．２的协议，是sandisk的牌子-2.2 on the sd card agreement is sandisk brand

485单相电能表开发程序，液晶显示。采用AD7755设计，可与掌上电脑连机通信设置各种电能表参数。-485 single-phase energy meter development process, liquid crystal display. Design using AD7755 can be connected Pocket PC communication settings of various parameters of energy meter.

温度控制的程序，自动调节蒸汽开度阀和风机的运行，来达到控制温度的要求-Temperature control program, automatically adjusts the output temperature control