MQ137-DQ

STM32实现的USB-HID下位机，PC无需驱动能收发数据，文件包括一个PortHelper调试助手(STM32 USB-HID to achieve lower computer, PC without driver can send and receive data, files include a PortHelper debugging assistant)

modbus协议，详细讲解了协议具体实现方法。(Modbus protocol, the specific implementation of the protocol explained in detail.)

采用51系列单片机为控制核心，包括电源变换处理及分配模块，恒流源模块，单片机主控模块，键盘输入模块，LCD显示模块，数模/模数转换模块，语音模块和实时时钟模块的9个部分。通过键盘设定好需要输出的电流值后，单片机对设定值按照一定的算法进行处理，经数模输出电压控制恒流源电路输出相应的电流值(51 Series single-chip microcomputer used for the control of the core, including the processing and distribution of power transform module, constant current source module, single-chip control module, the keyboard input module, LCD display module, digital-to-analog/analog-digital conversion module, voice module and real-time Clock Module Part 9. Through the keyboard need to set output current value, single-chip microcomputer according to the settings of the algorithm processing, digital-to-analog output voltage by the control constant current source circuit output current value of the corresponding)

汽车尾灯控制程序，包括左右转向灯，刹车灯，应急灯，(Taillights control procedures, including the left and right turn signals, brake lights, emergency lights,)

说明：  针对stm32裸机的先入先出队列，在串口接收缓存中有很大作用(First in first out queue for STM32 bare metal)

A Beginner’s Guide to Modeling with NEC vol 3

TI模拟前端芯片ADS1292R基于STM32的驱动程序。(The TI analog front end chip ADS1292R driver code based on STM32. )

It was a ATmega128 Sleep mode and awake mode programed by avr studio4

时钟芯片CW1288的驱动程序，适合外挂时钟的系统(CW1288 clock chip driver for external clock system)

stm32单片机控制激光雷达，激光雷达是目前比赛赛事中常见的传感器，更是无人车的必备(stm32 SCM laser radar, laser radar is common in tournament competition sensor, it is essential for unmanned vehicles)