DTMF decoder based on FFT algorithm

嵌入式linux 设备驱动程序，控制开关输出，是写驱动最基本的结构显示。-Embedded linux device driver to control output switch is driven to write the most basic structure of display.

三星原厂的S3C2440开发板测试程序-Samsung S3C2440 development board of the original test procedure

A/D ban ka qu dong shi yong shuo ming

linux下网络测试源代码，针对DM9-linux source code under the Network Testing

本程序实现用数码管来显示由电脑串口发来的数据。-This procedure to achieve with digital control to display sent by the computer serial port data.

资源描述 个人之前用原子的STM32F4的开发板，挂接了一个大家可以在淘宝买的到的NRF24L01模块的模拟SPI 接收的程序. 串口输出.  代码清晰注释全.简单明了. 插上模块烧写hex就可以通过串口看.   ，在这里注明一下，打开代码，While中先跑的是对NRF的检测（就是检测NRF是否与单片机通信正常），当看到串口显示：在位后，  请屏蔽这部分代码，把下面屏蔽的部分解除，即可接收数据 包子. 有什么问题可以留言. 实测ok的. 本人写.

pencil嵌入式系统开发包--A development package for pencil embedded system.

简单走马灯程序 ，可以学习参考哦-Lantern simple procedure, can learn Oh reference. . . . . .

本系统分电压测量和信号产生输出两大部分，电压测量部分以模拟电路为主，配合放大模块、A/D转化模块、显示模块；通过凌阳单片机进行数据处理，在误差允许范围内显示测量电压值。信号产生以直接数字式频率合成器为核心，经过AT89S52对DDS芯片内部进行控制，使之输出标准正弦波形，利用编程实现频率预置、步进，达到电压输出频率的可调节步进。通过调试与测量完成了题目的基本部分和全部发挥部分的要求并有自己的创新。-Voltage measurement points of the system and the output of two major signals, voltage measurement circuitry to simulate the main part, with the amplification module, A/D conversion module, display module through Sunplus Single-chip data processing, in the range of error allowed shows the value of measuring voltage. Signal generated by direct digital frequency synthesizer for the core of the DDS chip AT89S52 after the internal control standards so that the output sine wave shape, frequency of use of pre-programming, step to the output voltage adjustable frequency step. Debugging and measurement, through the completion of the basic part of the topic and all the requirements to play a part and have their own innovation.

PIC18f4520的lcd12864（带字库液晶）驱动程序-PIC18f4520 of lcd12864 (with a character LCD) driver