FreeRTOS，这个比 Real Time Linux 和 eCos 更小的实时操作系统，并且你也不用为这两个大的操作系统弄得头大了。FreeRTOS是一个非常小的实时操作系统，它包含有一个实时的内核及一个内核调制程序。它支持的单片机有 Philips ARM7, TI MSP430, Renesas (Hitachi) H8/S, Atmel AVR, Motorola/Freescale HCS12, Motorola/Freescale ColdFire, 及其他8051的单片机
标签： FreeRTOS
上传时间： 2014-05-28
上传用户：253189838
Unix 第 6 版的 sh 手册和源码，感兴趣请参考`The UNIX Time-Sharing System , CACM, July, 1974，它给出 Shell 操作的理论。 chdir (I), login (I), wait (I), shift (I)
上传时间： 2014-08-15
上传用户：wys0120
C++完美演绎 经典算法 如 /* 头文件：my_Include.h */ #include <stdio.h> /* 展开C语言的内建函数指令 */ #define PI 3.1415926 /* 宏常量，在稍后章节再详解 */ #define circle(radius) (PI*radius*radius) /* 宏函数，圆的面积 */ /* 将比较数值大小的函数写在自编include文件内 */ int show_big_or_small (int a,int b,int c) { int tmp if (a>b) { tmp = a a = b b = tmp } if (b>c) { tmp = b b = c c = tmp } if (a>b) { tmp = a a = b b = tmp } printf("由小至大排序之后的结果:%d %d %d\n", a, b, c) } 程序执行结果： 由小至大排序之后的结果:1 2 3 可将内建函数的include文件展开在自编的include文件中 圆圈的面积是=201.0619264
标签： my_Include include define 3.141
上传时间： 2014-01-17
上传用户：epson850
杭州利宇泰公司的基于44B0的ARMSys开发板上的大量源代码，包括ADC、ARP、彩色LCD、外部中断、以太网底层函数、FAT16文件系统、Flash ROM、GUI软件包、Helloworld程序、IIC接口、扫描键盘、Ping程序、44B0内置RTC示例、SDRAM接口、定时器示例、触摸屏示例、UART示例和uC/OS-II的移植、应用（包括多任务、任务间通信、中断服务程序）、UDP数据传输、USB固件编写等程序代码和工程。一次性共享给大家使用。可以作为其他samsung44B0开发板上应用程序的下载。
上传时间： 2013-11-30
上传用户：小鹏
能给发家提供这个好东西不容易，希望大家能多多学习，不要辜负了。 uC/GUI是uC/OS-II配套的专用图形界面。这可不是开源软件，也不象uC/OS-II一样可以免费下载，这个是非常昂贵的软件。所以大家拿到后，不要声张，偷着乐吧 ^_^
标签： 家
上传时间： 2015-03-31
上传用户：hewenzhi
CBC下写的串口编程，API函数实例 I wish this site had been around when I was trying to figure out how to make serial communications work in Windows95. I, like many programmers, was hit with the double-whammy of having to learn Windows programming and Win95 serial comm programming at the same time. I found both tasks confusing at best. It was particularly frustrating because I had, over the years, written so much stuff (including lots of serial comm software) for the DOS environment and numerous embedded applications. Interrupt driven serial comm, DMA transfer serial comm, TSR serial comm, C, assembler, various processors... you name it, it had written it. Yet, everything I knew seemed upside-down in the message-driven-callback world of Windows.
上传时间： 2014-06-20
上传用户：cccole0605
单片机上网卡的系列文档V1.0，后期还会不断补充，请注意版本号的变化。文档详细介绍了uC/OS-II在51上的移植方法，重入问题的解决，shell人机界面的编写，NE2000网卡驱动，ARP实现，ping命令的实现，相关网站介绍，经验体会等内容，对希望学习嵌入式系统开发的初学者非常有用
上传时间： 2014-01-19
上传用户：xinyuzhiqiwuwu
不用说了，uC/OS2.51官方源代码，此外结合本人心得体会增加了详细地说明，希望对初次使用者能起到一定的帮助作用。适用于uC/OS-II开发工具Borland C3.1剪裁版。
标签：
上传时间： 2014-11-05
上传用户：sammi
he LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with only 2 discrete levels, for example 0V and 5V and a constant period. The current value of this signal at a certain poiTnt of time is proportional to its Duty Cycle. That s the High Time during one period divided by the period. It can also be calculated as the average value during a particular period. That means after low pass filtering, (e.g. RC circuit) the signal becomes analog, with an actual value controlled by the microcontroller. The PWM functionality enables the LPC932 to control for example the speed of DC motors or the brightness of electric lighting.
标签： signal Modulated analog create
上传时间： 2015-05-14
上传用户：CHINA526
解决时钟问题，acm竞赛题 A weird clock marked from 0 to 59 has only a minute hand. It won t move until a special coin is thrown into its box. There are different kinds of coins as your options. However once you make your choice, you cannot use any other kind. There are infinite number of coins of each kind, each marked with a number d ( 0 <= 1000 ), meaning that this coin will make the minute hand move d times clockwise the current time. For example, if the current time is 45, and d = 2. Then the minute hand will move clockwise 90 minutes and will be pointing to 15. Now you are given the initial time s ( 0 <= s <= 59 ) and the coin s type d. Write a program to find the minimum number of d-coins needed to turn the minute hand back to 0.
标签： 时钟
上传时间： 2015-05-21
上传用户：rishian
