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STM8 硬件I2C程序，ST原厂的库版本I2C程序存在问题，无法直接用于项目。本程序是本人亲自调试通过的STM8硬件I2C从机程序。(STM8 hardware I2C procedures, problems ST I2C original version of the library program, can not be directly used for the project. This program is personally STM8 hardware debugging through the I2C slave program.)

STMF407驱动超声波传感器测距并将距离显示在LCD12864上(STMF407 drives ultrasonic sensors to range and display the distance on the LCD12864)

说明：  主要实现了STM32F10X的串口dma，实现了flash操作；并且 直接可以编译运行;(It mainly implements the serial port DMA of STM32F10X, realizes flash operation, and compiles and runs directly.)

说明：  基于OLED STM32F103 SPI基本驱动程序(Based on OLED STM32F103 SPI basic driver)

基于STM32f407ZGT6编写的4*4矩阵键盘程序，并通过TFT显示屏显示(4*4 Matrix Keyboard Program Based on STM32f407ZGT6 and Displayed by TFT Display Screen)

SQL Server 2005 Service Broker (SSB) is an asynchronous messaging technology built into SQL Server. With SSB, you essentially get the power of messaging technologies like Microsoft Message Queue (MSMQ) combined with the relational database capabilities of SQL Server, all controlled with Transact SQL statements(SQL Server 2005 Service Broker (SSB) is an a synchronous messaging technology built into S QL Server. With SSB. you essentially get the power of messaging tech nologies like Microsoft Message Queue (MSMQ) c ombined with the relational database capabili ties of SQL Server, all controlled with Transact SQL statements)

说明：  此原理图是验证过的PCB，波特率在1.2的时候功率20DB 时，空地上，离地面高度为10米左右，测试距离1000米左右(This schematic diagram is a PCB that has been verified. When the baud rate is 1.2, the power is 20dB. On the open ground, the height is about 10m from the ground and the test distance is about 1000m)

TM1652 是一款LED（发光二极管、数码管、点阵屏）驱动控制专用芯片，内部集成了数字通讯电路、 解码电路、数据锁存器、震荡器、LED驱动电路。通讯方式采用异步串口通信（UART）协议，因芯片只 接收单片机发来的数据，仅需要单片机的一个TX端口发送数据给芯片即可，实现单线通讯；在显示驱动 方面，芯片采用动态扫描方式，两种显示模式可选，8级段驱动电流可调，16级位占空比可调；TM1652 内置消隐处理优化电路。(TM1652 is an LED (light-emitting diode, LED, dot-matrix screen) driver control ASIC, integrated digital communications circuits, Decoding circuit, data latch, oscillator, LED driver circuit. Communication using asynchronous serial communication (UART) protocol, because the chip only MCU receives data sent only need a microcontroller TX port to send data to the chip can achieve single-wire communication the display driver Aspects, chip dynamic scan mode, two display modes, 8 segment drive current is adjustable, 16-bit adjustable duty cycle TM1652 Built-in blanking processing optimization circuit.)

LCD12864 硬件永久使能，双线串行驱动(Lcd12864 Two-wire serial driver)

说明：  四轴的简单原理图，包括Wifi模块，电源模块，通信模块等(simplified scheme layout of a four-wing drone)