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说明：  基于STM32F407的超声波模块测距，增量式编码器（1/30减速比）实时测速，PWM输出控制直流单机，并通过OLED显示实时数据，同时也通过串口打印(Based on STM32F407 ultrasonic module ranging, incremental encoder (1/30 deceleration ratio) real-time speed measurement, PWM output control DC single machine, and display real-time data through OLED, but also through serial port printing.)

一个nokia7110屏的 protues仿真及源码完整资料，与大家学习交流(A nokia7110 screen protues simulation and source complete data, with everyone learning exchanges)

小三极管成型机源码程序，实际工程案例应用源码程序 (Small transistor forming machine source programs, the actual application source programs Projects)

可以实现不通过的按键功能，模式切换，声道调节(Implementing the function of keys that do not pass)

用mage128产生spwm驱动ir21094构成的逆变电源，小功率时波形正常。(Switching power supply system procedures mage128 parallel development board to achieve two-way current pro rata, the regulator output.)

zigbee无线定位系统的相关程序代码。很有用 都有相关解释(zigbee location code)

无线射频芯片SI4432技术手册及编程指南（中文）(Radio frequency chip SI4432 technical manuals and Programming Guide (Chinese))

说明：  硬件资源: 1,DS0(连接在PA8)，DS1(连接在PD2上) 2,串口1(波特率:115200,PA9/PA10连接在板载USB转串口芯片CH340上面) 3,ALIENTEK 2.8/3.5/4.3寸LCD模块(仅支持MCU屏) 4,按键KEY0(PC5)/KEY1(PA15)/KEY_UP(PA0,也称之为WK_UP) 实验现象: 通过按键KEY_UP可以控制定时器AutoReloadTimer_Handle的开启，这个是 周期定时器，一旦开启就会不断的运行，直到按下KEY1将其关闭。按下KEY0 可以打开定时器OneShotTimer_Handle，这是个单次定时器，只会运行一次， 运行周期到了以后就会停止运行，除非按下按键KEY0将其再次开启。(Hardware resources: 1, DS0 (connected to PA8), DS1 (connected to PD2) 2. Serial port 1 (baud rate: 115200, PA9/PA10 connected on board USB to serial chip CH340) 3, ALIENTEK 2.8/3.5/4.3 inch LCD module (only supporting MCU screen) 4. Keyboard KEY0 (PC5)/KEY1 (PA15)/KEY_UP (PA0, also known as WK_UP) Experimental phenomena: The timer AutoReloadTimer_Handle can be turned on by keying KEY_UP. This is The periodic timer will run continuously once it is turned on until KEY1 is pressed to turn it off. Press KEY0 You can turn on the timer OneShotTimer_Handle, which is a single timer and only runs once. The run cycle will stop after that unless KEY0 is pressed to turn it on again.)

说明：  stm32的串口通信，环形队列接收，防止数据过多的时候发生丢失的情况(STM32 serial communication, ring queue receiving, to prevent data loss when too much)

stc8，DEMO程序： uart stc8aid delay IO timer adc pwm pca(stc8,DEMO software: uart stc8aid delay IO timer adc pwm pca)