import Adafruit_BBIO.GPIO as GPIO
import time

GPIO.setup("P9_21", GPIO.OUT)
GPIO.setup("P9_22", GPIO.OUT)

m1a = GPIO.output("P9_21", GPIO.HIGH)
m1b = GPIO.output("P9_22", GPIO.HIGH)

while (True):

        try:
                for motor in range (0, 101, 1): #starts at 0, steps up to 101 in 1 steps
                    m1a = ("P9_21")
                    time.sleep(3)
                    print(motor)
                for motor in range (100, -1, -1):
                    m1b = ("P9_22")
                    time.sleep(3)
                    print(motor)

        except(KeyboardInterrupt):

                #And final cleanup
                print "You have just ended your camp trip!"
                GPIO.cleanup()
                quit()