连接2x16 LCD 16F877代码exanle

c嵌入式编程经验，很有价值，有需要的可以参考-good source for embedded program

基于STM32的3.2寸ILI9320触摸屏的显示程序，带有ILI9320的画图函数-STM32-based 3.2-inch touch screen display program ILI9320 with ILI9320 Paint Function

verilog写的回波抵消程序，相当于写了个回波抵消的芯片，不是dsp，可编译后下载于FPGA,绝对原创，写了很长时间。-Verilog echo canceller written procedures, wrote the equivalent of echo canceller chip, not dsp, can be downloaded from the compiled FPGA, absolute originality, writing for a long time.

一款低价位时钟芯片的C驱动程序-low-priced clock chip C Driver

应用背景在STM32F105和STM32F107互连型系列微控制器之前，意法半导体已经推出STM32基本型系列、增强型系列、USB基本型系列、互补型系列；新系列产品沿用增强型系列的72MHz处理频率。内存包括64KB到256KB闪存和 20KB到64KB嵌入式SRAM。新系列采用LQFP64、LQFP100和LFBGA100三种封装，不同的封装保持引脚排列一致性，结合STM32平台的设计理念，开发人员通过选择产品可重新优化功能、存储器、性能和引脚数量，以最小的硬件变化来满足个性化的应用需求。关键技术本实验将实现如下功能：开机先检测字库是否存在，如果检测无问题，则对VS1053进行RAM测试和正弦测试，测试完后开始循环播放SD卡MUSIC文件夹里面的歌曲（必须在SD卡

8051模拟I2C，I2C单字节读写和多字节读写

YAFFS A NAND-flash filesystem，多平台嵌入式linux源代码-YAFFS A NAND-flash filesystem, multi-platform embedded Linux source code

MTD(memory technology device内存技术设备)是用于访问memory设备（ROM、flash）的Linux的子系统。MTD的主要目的是为了使新的memory设备的驱动更加简单，为此它在硬件和上层之间提供了一个抽象的接口。-MTD (memory technology device memory technology equipment) is the equipment for accessing memory (ROM, flash) Linux subsystem. MTD"s main purpose is to make the new memory devices drive more simple, for its hardware and the upper between an abstract interface.

此 keil2 项目包含的矩阵键盘、 液晶屏、 计时器和串行通信接口的代码。

应用背景The CMX990 provides, on-chip: a flexible, formattable GMSK packet and freeformat modem, a dual synthesiser fed from an external source, IF and RF transceiver stages for both Rx and Tx modes, and auxiliary ADCs and DACs for system control and monitoring.关键技术Operating in the range of 400MHz to 1GHz at data rates of 4 to 16 kbps. This single-chip, half-duplex device requires a minimum of external components, keeping end-product board size, power consumption and cost to an absolute minimum. The versatile GMSK modem is configured for either packet and freeformat data operation via an efficient task-oriented Rx and Tx format and command structure combined with data scrambling, interleaving and FEC and CRC capabilities. Rx data acquisition, extraction and tracking functions use Rx data-quality feedback to support varying signal environments. IF and RF functions in the Tx path handle all the signal processing requi