Servo test code in Python for Pololu Micro Maestro servo controller

servo-test.py

@public.route('/speed/<channel>/<pulse_in_ms>')
def set_motor_speed(channel, pulse_in_ms):
    pytronics.serialWrite(chr(0xAA), speed=9600)
    if (channel == 'right'):
        side = chr(0x01)
    else:
        side = chr(0x02)
    rough_speed = (int(pulse_in_ms) >> 7) & 0x7F # grab bits 7-13
    fine_speed = int(pulse_in_ms) & 0x7F # wipe out all but bits 0-6
    pytronics.serialWrite(chr(0x84) + side + chr(fine_speed) + chr(rough_speed), speed=9600)
    print "Set speed to {0}".format(int(rough_speed))
    return "speed set"