from motor import Motor
import time

# Decide which pins to hook up to on the Pi before running
speed_pin = 17
forward_pin = 27
reverse_pin = 22

m = Motor(speed_pin, forward_pin, reverse_pin)

dir = 'ascending'
speed = 0.0
while 1:
    if speed >= 15.0:
        dir = 'descending'
    elif speed <= -15.0:
        dir = 'ascending'
    if dir == 'ascending':
        speed = speed + 2.0
    else:
        speed = speed - 2.0
    m.move(speed)
    time.sleep(0.1)