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SD卡2.0协议的详细资料，可用与SPI使用(The details of the SD card 2.0 protocol can be used with SPI)

4X4点阵键盘+1602液晶显示做的计算器（AVR单片机）(4X4 matrix keyboard 1602 LCD calculator to do (AVR microcontroller))

这是Small RTOS 51 在DP－51下载仿真实验仪上使用CAT24WC02驱动程序的例子。本例程序按照相应的的通讯协议接收一个数据，并将接收到的数据显示到LED数码显示器上。然后将接收到的数据写入Cat24Wc02中，再在同一位置将数据读出，并将读出的数据通过串口发送回来。通讯协议参考rtos随想曲和test.ini。 (This is the Small RTOS 51 DP-51 download simulation NG use CAT24WC 02 Driver for example. The cases in accordance with the relevant procedures of receiving a communication protocol data and receiving the data shows that the LED digital display. Then sending the data into Cat24Wc02, again in the same position will be read out data, will be read out through the serial data sent back. Communication protocol reference rtos test.ini and Capriccio.)

无差拍PFC仿真代码，在PSIM下的电路仿真(Deadbeat PFC simulation code, circuit simulation in PSIM)

STM32F407信号发生器输入一个正弦波，AD采样，DA输出，系统频率应该是输入的波形的频率的10倍以上保证输出波形的完整性，系统的输出频率可以使用示波器测试出。(Stm32f407 signal generator input a sine wave, AD sampling, Da output and system frequency should is 10 times the frequency of the input waveform to guarantee that the above output waveform of integrity, the output frequency of the system can use oscilloscope to test out. )

说明：  This is a generic FIFO buffer that can be used to store any kind of items. It is written in C language and can be compiled and used on almost any architecture. It was designed to be used on memory limited architectures such as microcontrollers. Examples of the applications that can be built with this library include:

能够快速读取电子海图，还有简单的显示功能(ENC )

STM32单片机freemodbus的移植，主从机的都有(1, transplant FreeModbus1.5 and RT-Thread1.1.1 to STM322, development platform supports Eclipse, Keil, IAR3, can be used in the Eclipse plug-in version management EGIT 4, support Modbus RTU (ASCII untested))

TCS3200传感器捕获方波频率，可以根据频率变化识别外部光源颜色(TCS3200 sensor to capture a square wave frequency, the frequency change can identify the external light source color)

STM32 SPI读写FM25CL64铁电存储器，程序为103RBT6单片机读写代码，包括SPI初始化、字节发送接收代码、FM25CL64读写代码(STM32 SPI read/write FM25CL64 ferroelectric memory, the application for 103 rbt6 microcontroller, speaking, reading and writing code, including the SPI initialization code byte code to send and receive FM25CL64, speaking, reading and writing )