FREQ

ST7565是一款点阵液晶驱动芯片，它具有并行与串行（SPI）两种接口.(ST7565 is a dot matrix LCD driver chip, it has the parallel and serial interface (SPI) two.)

说明：  用mcs-52系列单片机实现等精度频率测量，T1引脚接被测TTL信号，晶振22.1184MHz，对任何频率都可以实现很高精度的测量（精度<1 )，结果从串口字符串输出，波特率115200，可以用串口调试器观察结果.(With mcs-52 family of single chip and other precision frequency measurement, T1 pin then measured TTL signal, Crystal 22.1184MHz, any frequency can be achieved very high accuracy of measurement (precision<1 ), the result string from the serial output , baud rate 115200, serial debugger can observe the results.)

STM32F107的单片机，针对红外遥控解码，我们已经使用过(STM32F107 infrared remote control code)

51单片机动态数码管显示开发程序，对单片机初学者有一定的参考指导作用，欢迎下载参考研究，谢谢！(51 single-chip dynamic digital display development program, microcontroller beginners have a certain role in guiding, are welcome to download the reference study, thank you!)

NTC测温程序的查表方法--经典的二分法。(NTC thermistor temperature measurement program)

以前电子竞赛时写的M3 ARM控制TFT液晶显示正弦波波形可以连贯的左移，没有闪烁感，我还写了一个也是正弦波左移，只不过有一点闪烁，我也上传了，你们需要可以找一下！(Writing contest before the electronic control M3 ARM TFT LCD sinusoidal waveforms can be coherent left, no flashes, I also wrote a sine wave is left, just a little flicker, I also uploaded, you need to be able to Get it!)

使用内部硬件SPI，与模拟电流电压输出芯片AD5422通讯。(Using the internal hardware SPI, the analog voltage output current AD5422 chip communication.)

J1939 protocol description

TI 官方光伏逆变器学习资料。一个完整的110V纯正弦波输出逆变器学习资料，软硬件都有。(TI Inverter learning resource.)

利用PID算法控制PWM输出电压，实现串联型数控电源，通过键盘输入控制期望电压(PID algorithm to control the use of PWM output voltage to achieve tandem CNC power, through the keyboard input control voltage expectations)