Stm32 stepper motor drive with DRV8825 - basic connection and interface

here is the link of the full code -https://drive.google.com/file/d/1NnQfIaBRiXXGLXnQcpZKscw8fa2ok5AL/view?usp=sharing open the txt file... coppy the code... delete the existing code generated by cube IDE ,and replace it with the new one (full code) pin - A1 is step pin A2 is Dir logic - 10 rev. clock wise and 10rev cownter clock wise.