瑞泰2812的9个例程C源代码，包括混合编程，PID算法，FFT算法，电机控制等源代码，可直接修改后移植使用-9 of 2812 Ruitai C source code routines, including the mixed programming, PID algorithm, FFT algorithms, source code, such as motor control, can be directly transplanted to use the revised

最为经典的PID控制算法程序源代码。实验背景的控制输出DA芯片的数字量。-The most classic PID control algorithm source code. DA chip to control the output of the digital experiments backgrounds.