bppid

WM8731是高性能的音频编码解码芯片，使用时需要通过IIC总线进行配置，本程序可以直观的设置各寄存器的参数，并自动生成C或C++语言代码。使用方便。(WM8731 is a high-performance audio codec chip, need to use IIC bus configuration, this procedure can be intuitively set the parameters of the register, and automatically generate C or C++ language code. Easy to use.)

基于xs128的超声波测距及oled显示程序(Display program is based on the ultrasonic ranging and oled xs128)

四线电阻式触摸屏，ads7846控制显示触摸坐标(Four-wire Resistive Touch Panel, ads7846 touch control display coordinates)

正点原子Mini板实验二 按键实验，为新手准备的基础源码，基于C语言，芯片为STM32F103RC(Punctuality atomic Mini board experiment two button experiment, for beginners to prepare the basic source code, based on C language, chip STM32F103RC)

实现了信号发生功能，输出波形完美，频率。幅值 可调(The function of the signal is realized and the output waveform is perfect.)

freetype2在lcd上写字，对freetype2字体显示的布局封装库(支持汉字)(freetype2 on lcd write, package library of font layout is with freetype2 (support Chinese characters))

推挽式DCDC变换器的闭环仿真，电压闭环，输出稳定(DCDC converter push-pull-loop simulation, the voltage loop, stable output)

温度传感器DHT22的检测程序，在1602液晶上显示当前环境温度及湿度，精确度0.1，误差范围为2HR ，0.4C(DHT22 temperature sensor detection program that displays the current ambient temperature and humidity, the accuracy of 0.1, the error range is 2HR , 0.4C in 1602 on LCD)

基于stm32f407搭建的太阳能最大功率点追踪器(Solar maximum power point tracker based on stm32f407)

W25N01芯片驱动，适用于STM32连接外设SPI_Flash芯片的存储。(W25N01 chip driver.It is suitable for the storage of SPI_Flash chips on STM32 connected peripherals.)