PIC18F1320单片机通过串口下载的bootloader源程序（C语言）

硬件系统模块包括超声波收发模块、LED显示模块、声光报警模块、STC89C52单片机模块。软件主程序流程图包括主程序流程图，定时中断子程序流程图，外部中断子程序流程图。如果距离小于一定数值，则会进行蜂鸣器报警，同时每个方向对应一个LED灯，报警时对应的LED会亮。采用两个测距模块，更加提高了倒车时的安全性，降低了事故的发生率。

周立功大侠编的一个学习arm嵌入式基础知识的好ppt,对初学者很有帮助-Week Ligong heroes made a study arm of a good basic knowledge of embedded ppt, very helpful for beginners

c51和8019实现单片机上网，ping arp等都调试通过-C51 and 8019 Singlechip realize the Internet, ping arp debugging and so on through

stm32f103 普通IO口操作例程-IO I stm32f103 ordinary routine operation

本示例说明如何编程 STM32F4xx FLASH。后重置，闪存程序/拭除控制器已被锁定。若要解除锁定，使用 FLASH_Unlock 函数。在编程所需的地址之前, 使用闪存擦除部门功能执行擦除操作。擦除过程从开始的扇区，用于的数计算。然后所有这些部门将拭除一个接一个通过调用 FLASH_EraseSector 函数。此操作完成后，将通过使用 FLASH_ProgramWord 函数执行编程操作。写入的数据，则检查和编程操作的结果存储到 MemoryProgramStatus 变量。

ADS或是KEIL为开发环境，给出常用ARM指令集及汇编 -KEIL or ADS for the development of the environment, given popular ARM instruction set and compilation

应用背景CANopenNode is an opensource CANopen Stack. CANopen is the internationally standardized (EN 50325-4) CAN-based higher-layer protocol for embedded control system. For more information on CANopen see http://www.can-cia.org/ Stack is written in ANSI C in object-oriented way. Code is documented. License is LGPL. It includes Example for CANopen Input/Output device and simple CANopen master. Variables (communication, device, custom) are ordered in CANopen object dictionary and are accessible from both: C code and from CAN network. Code includes:  - CANopen Stack for multiple microcontrollers with documenation.  - Working examples of simple Input Output CANopen device for all microcontrolers.  - Working CANopen master device with HTML interface to CANopen: CAN log, Emergency log, SDO master, NMT master, Custom CAN message. (It

关于arm的几篇文章。。大家分享-arm of the articles. . Share

应用背景 // //      TMDX AL  // //########################################################################### // //  Ver | dd mmm yyyy | Who  | Description of changes // =====|=============|======|=============================================== //  0.55| 06 May 2002 | L.H. | EzDSP Alpha Release //  0.56| 20 May 2002 | L.H. | No change //  0.57| 24 May 2002 | L.H. | Added initialization of RAM control registers //      |             |      | for TMX samples. //########################################################################### #include "DSP28_Device.h" //--------------------------------------------------------------------------- // InitSysCtrl: //-------------------------

ARM汇编指令集,全，容易理解，条理清晰-ARM instruction set to compile the whole, easy to understand, the clarity of