dt.STM32Pfreemodbus

说明：  基于STC51单片机，实现dds的算法部分(Based on 51, the algorithm part of the realization of dds)

基于Cy7y168013USB接口芯片的逻辑分析仪keil源码(Logic analyzer based on Cy7y168013USB interface chip keil source code)

通过NXP NFC Reader IC RC523 读取Felica (NFC TYPE 3)card，配合NXPRdLib使用（NXP官网下载） (Read Felica(NFC TYPE 3)card with RC523)

ds1302 ATMEGA16L 数字钟的实现(ds1302 ATMEGA16L )

说明：  图像处理程序,单片机嵌入式,FFT算法(Image processing procedures, single-chip embedded, FFT algorithm)

基于stm32的bldc驱动，有hall位置传感器，电流传感器采样，方波驱动。(Based on stm32 BLDC drive motors, hall position sensor, current sensor sampling, square wave drive.)

超声波测距，可以通过串口助手显示，当小于设定值时，显示0，当大于设定值时，显示1(Ultrasonic Ranging, through serial aides showed that when less than the set value, 0, when greater than the set value, indicating a)

说明：  51单片机控制GSM模块发短信和打电话的C源码(GSM single-chip control module 51 send text messages and phone calls the C source)

交通灯，使用定时中断来进行时间的加减，使用数码管进行显示，能够显示东西南北的红绿灯时间和灯的情况(Traffic lights, use the timer interrupt to the time of addition and subtraction, using digital tube display, it will show what traffic lights north and south of the circumstances of time and light)

永磁同步电机直接转矩控制系统，模糊PID控制程序，包含M文件(Permanent magnet synchronous motor direct torque control system)