CMSIS files from ARM provides ARM Math functions. There are also PID controller functions in different formats for f32, q31 and q7. This tutorial/project will talk about how to implement PID controller on STM32F4xx using PID functions from ARM. PID Controller Fast about PID controller. PID stands for Proportional-Integral-Derivative controller. This is a control loop feedback mechanism widely used in industrial control systems. It calculates the error between measured value and the desired setpoint value. According to the error, it...