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this program for student. toturial for gpio stm

说明：  2.2寸SPI串口9341 STM32_F103系列测试源码(2.2-inch SPI serial port 9341 STM32 Chu F103 series test source code)

STM32F103_硬件SPI控制LCD例程(STM32F103_Hardware SPI Control LCD Routine)

瑞萨单片机RL78 陀螺仪mpu6050 dmp读取 四轴串级pid + ANO_TC匿名科创地面站v4 显示姿态pid调试(Renesas MCU RL78 DMP read four axis gyroscope mpu6050 cascade PID+ ANO_TC anonymous Kechuang ground station V4 display posture PID debugging)

PID程序,实现PID控制算法........(PID)

Wiggler Clone .JTAG Schematic and PCB in Altium Designer Format

stm32F1系列IAP串口升级程序，Ymodem协议，自动跳转APP。(STm32F1 Series IAP Serial Port Upgrade Program)

modbus TCPIP协议client-Server代码,c++。(TCPIP client-Server protocol MODBUS source code and analysis, c++ programming. )

说明：  用4*4矩阵键盘给液晶1602送四位数，其中第四行按键设置为功能键，按键显示可调对应位的数字(With 4* 4 matrix keyboard to send the four-digit LCD 1602, the fourth line of buttons is set to function keys, adjustable button displays the corresponding number of bits)

UCOS2+UCGUI移植到KEIL C51的源代码(UCOS2+ UCGUI transplanted into the source code KEIL C51)