Introduction - If you have any usage issues, please Google them yourself
This done using stm32f100r8t6 developed two-phase four-wire stepper motor driver. How to use: (a) you want to call InitStepMotor () Initialize the port, etc. (2) then call StartStepMotor () to set the direction and the stepper motor step number (3) the frequency of the last call StepMotorGo () can, of course, is that this frequency step into the motor frequency.