这个SPI的源代码，对学习ARM很有帮助，好东西分享给每个人…

IIC总线，I2C，用于LPC21XX系列的，LPC2103。用非中断的方式写的，直接用IO口控制。非常好用。-IIC Bus, I2C, for LPC21XX series, LPC2103. With non-disruptive way to write and direct use of IO population control. Very easy to use.

some pdf files describing about PLC concepts and components.

ads mpc860上hdlc的驱动程序，不带操作系统，属于纯粹的物理驱动-hdlc up ads mpc860 driver, non-operating system, belong to a purely physical drive

ＵＣlinux下的嵌入式ＷＥＢ服务器，希望对你有所帮助！-Under uClinux embedded WEB server, and they hope to help you!

下面是一个超声波测距的程序，硬件电路由于电脑格盘已丢失，下面的代码是从样机上复制的。 硬件电路包括液晶显示、超声波的发射、超声波的接受、滤波、单片机处理。 液晶显示采用LCD1602模块，下面的代码里有液晶的驱动，可以拷贝用于它处。 超声波发射电路包括压电换能器及其支持电路，发射约44KHz的超声波。 超声波的接收电路包含一块CD40106处理芯片。技术指标大约是测距范围在三米左右，测量精度约在厘米级别。大量用于倒车雷达的测距中。-The following is a range of ultrasound procedures, the hardware circuit as a result of the computer grid plate has been lost, the following code is copied from the prototype. Hardware circuit including liquid crystal display, ultrasonic transmitter, ultrasonic acceptance filtering, single-chip processing. LCD1602 LCD module used, the following code, there are LCD drivers, you can use it to copy. Firing circuit including the piezoelectric ultrasonic transducer and its support circuitry, fired about 44KHz ultrasound. Ultrasonic receiver circuit includes a processing chip CD40106. Technical indicators for a range of about 3 meters range around the measurement precision level of about cm. Reversing a large number for the location of the radar.

A simple preoteus based design to display the characters typed int the keyboard into LCD using UART of 8051.Plz make sure that TTL to RS232 is inserted in between the microcontroller and virtual terminal which is not shown in the design.

st2410bootload源码ADS环境(非VIVI)-st2410bootload source ADS (VIVI)

轻量级TCP/IP协议栈最新版本-lightweight TCP/IP protocol stack latest version

ARM 触摸屏代码 可以在ARM9平台上运行的触摸屏代码-Touch Panel ARM code can run on ARM9 platform code Touch Panel

AT Keyboard interfacing with 8051 and can be easily modified for any other micro-controller