# use this script to make L2 controller a simple
# "command triggered" waterfall LED strip
# after configured, send "load /c/run" command to start
# use ShellLab Testbench App to run this script
# download at www.linkongsoft.com/shell-lab/

strap_length = 30 # total length
delay_ms = 100  # movement delay in ms
steps = 10 # length of water bar
color = 0xFF0000  # red bar

fcfs = Utils.FCFS()
fcfs.appendFile("run", '''\
L -l{delay_ms} -n{steps} W -w -f {color}
L -l{delay_ms} -n{strap_length} W -w -f 0
'''.format(delay_ms=delay_ms, steps=steps, 
      color=color, strap_length=strap_length))

fcfs.appendFile("init", '''\
W -I -l{strap_length}
'''.format(strap_length=strap_length))

s = ShellLabStrip(PORT)
s.fcfsFormat()
s.fcfsProgram(fcfs.generate())
s.port.write('reboot\n')

# wait for reboot and test the effect
time.sleep(0.5)
s.disconnect()
s.connect()
s.writeCommand('load /c/run')