import A4988
import time
# Stepper motor demonstration.

stepper = A4988.A4988()
print("Starting stepper motor test.")

speed = 100
stepper.microstepping(1/2)
stepper.set_position_by_angle(90, speed)
time.sleep(1.0)
stepper.set_position_by_angle(-90, speed)

while True:
    print(f"Speed: {speed} steps/sec.")
    stepper.move_sync(800, speed)
    time.sleep(1.0)

    stepper.move_sync(-800, speed)
    time.sleep(1.0)

    speed *= 1.2
    if speed > 2000:
        speed = 100