用于Silabs C8051F120单片机的SPI通信的源代码

这是一个基于8255扩展端口的keil c51固件，实现对fat32硬盘的控制。网上还不太好找。-This is based on a 8255 expansion of the port Keil decoder firmware, the drive to achieve the right fat32 control. Not very easy to find online.

modbus的一个测试程序-Modbus of a test procedure

嵌入式系统讲义幻灯片课件- Inserts the type system printed lecture slide class

L298N是ST公司生产的一种高电压、大电流电机驱动芯片。该芯片采用15脚封装。主要特点是：工作电压高，最高工作电压可达46V；输出电流大，瞬间峰值电流可达3A，持续工作电流为2A；额定功率25W。内含两个H桥的高电压大电流全桥式驱动器，可以用来驱动直流电动机和步进电动机、继电器线圈等感性负载；采用标准逻辑电平信号控制；具有两个使能控制端，在不受输入信号影响的情况下允许或禁止器件工作有一个逻辑电源输入端，使内部逻辑电路部分在低电压下工作；可以外接检测电阻，将变化量反馈给控制电路。使用L298N芯片驱动电机，该芯片可以驱动一台两相步进电机或四相步进电机，也可以驱动两台直流电机。-L298N is produced by ST a high-voltage, high current motor driver chip. The chip uses 15-pin package. Main features are: high voltage, the maximum working voltage up to 46V output current, instantaneous peak current up to 3A, continuous operating current of 2A rated power of 25W. Contains two H-bridge high-voltage high-current full-bridge driver can be used to drive DC motors and stepper motors, relay coils and other inductive load using standard logic level signal control has two enable control terminal, input signal without affecting the case to permit or prohibit the device work a logic supply input, so that part of the internal logic circuits at low voltage work can be an external sense res

一个s3c44b0上的启动兼测试程序-a s3c44b0 start on the testing procedures and

nios软核的开发教程，详述了软核开发的一些细节-nios development of soft-core tutorial, detailing some of the details of soft-core development

基于smdk2410 开发板u-boot-1.2.0 对nand flash的支持，详细讲解了u-boot在nandflash的移植过程以及需要修改的地方，对初学者是个不错的文档。-Owing to that smdk2410 develops the board u-boot-1.2.0 support to nand flash,local revising in nandflash transplanting process and need having explained u-boot detailedly, is a good document to the beginner.

QRCODE二维码作者开源的生成及解析的源码，可以移植到单片机上，纯C编写，库的接口使用起来非常方便，说明也很详细。

stm32f103x处理器 3.5寸彩屏 屏幕主控芯片ili9325 代码从51单片机移植过来， 需要注意的是如果屏幕显示不正常，需要stm32与屏幕之间需要电平转换， stm32电平3.3v

测试DaVinci平台硬件RTC的linux端程序