Test_ifnonnull

STM32控制无刷电机源码，直接用寄存器控制的版本.(BLDC Control by STM32)

实现蜂鸣器驱动，蜂鸣器应用。非常好的实例。(Buzzer driver, buzzer application. Very good examples.)

液晶显示模块YB12864ZB使用说明书(LCD module YB12864ZB manual)

这个是永磁无刷直流电机的本体结构和控制电路的联合仿真，既可以设计电机的结构，又可以搭电机的控制系统。(This is the body structure of the permanent magnet brushless DC motor and control circuit co-simulation, both the structure of the motor can be designed, they can take control of the motor system.)

TCD1206 实现光源的采集，通过1549转换后传给单片机，单片机将数据通过串口传出( TCD1206 realize the collection source, through the 1549 conversion pass microcontroller, the microcontroller outgoing data through the serial port)

说明：  采用stm32f4核心板，实现AD采集，效果很理想，可测量流量，液位(Achieving Flow Acquisition)

超声波测距仪设计文档，本设计主要是以74LS04和CX20106A为测距模块，DS18B20用于温度补偿，12864液晶显示，HC-SR04为超声波显示板，语音模块由音频功率放大器LM386、语音芯片WT588D、低压差电压调节LM1117组成。(Ultrasonic range finder design documents, the design is mainly based on 74LS04 and CX20106A ranging module, DS18B20 for temperature compensation, 12864 LCD, HC-SR04 ultrasonic display boards, voice module consists of audio power amplifier LM386, voice chip WT588D, LM1117 low dropout voltage regulator components.)

开关电源测试 标准 (Switching power supply testing standards)

SDL2_image-2.0.0开发包，方便大家使用(SDL2_image-2.0.0 Development Kit to facilitate the use)

说明：  一个用labview编写的高速数据采集系统的上位机控制界面(Written in a high speed with labview data acquisition system PC control interface)