Interacts with the DCSD Alex Cable's Status LEDs. This can be adapted to any use case you want.

dcsd.py

#!/usr/bin/python3
try:
	import pylibftdi
except ImportError:
	import os
	os.system("brew install libftdi libusb; brew link libusb; pip3 install pylibftdi")
	print("Dependencies installed.\n")
	

'''
Value Map

0xF0:	All Lights Off				(0,0,0)
0xF1:	Red Light On				(0,0,1)
0xF2:	Green Light On				(1,0,0)
0xF3:	Red + Green Lights On			(1,0,1)
0xF8:	Yellow Light On				(0,1,0)
0xF9:	Red + Yellow  Lights On			(0,1,1)
0xFA:	Yellow + Green Lights On		(1,1,0)
0xFB:	All Lights On 				(1,1,1)
'''
pylibftdi.USB_PID_LIST.append(0x8a88) # PID
pylibftdi.USB_VID_LIST.append(0x0403) # VID

# Device Config
def connettiDCSD():
	luciDevice = pylibftdi.BitBangDevice("AH022NWG") # Device Serial for the Status LED FTDI.
	if luciDevice.device_id: 
		print(f"Found FTDI chip with requested Serial Number: {luciDevice.device_id}")
		luciDevice.open()
	return luciDevice

def dcsd_lights_set(green, yellow, red):
	lights_map = {
				  (0,0,0): 0xF0,
				  (0,0,1): 0xF1,
				  (1,0,0): 0xF2,
				  (1,0,1): 0xF3,
				  (0,1,0): 0xF8,
				  (0,1,1): 0xF9,
				  (1,1,0): 0xFA,
				  (1,1,1): 0xFB
				}
	tuple_key = tuple([green,yellow,red])
	luciDevice.ftdi_fn.ftdi_set_bitmode(lights_map[tuple_key], 0x20) # CBUS Bitmode

def blinkenlights():
	from time import sleep
	i = 0
	command = [(0,0,0),(1,0,0),(1,1,0),(1,1,1),(0,1,1),(0,0,1)]
	try:
		while 1:
			dcsd_lights_set(*(command[i])) # With *() possiamo direttamente passare una tupla alla funzione
			i+=1
			if i == 6: 
				i = 0
			sleep(.3)
	except KeyboardInterrupt:
		dcsd_lights_set(1,1,1) # Sets all lights on
		print("\r\rDone!")
		
def randlights():
	from random import randint
	from time import sleep
	while 1:
		dcsd_lights_set(randint(0, 1), randint(0, 1), randint(0, 1))
		sleep(.3)

def semaforo(trosso, tverde):
	import time, random
	while True:
		dcsd_lights_set(0, 0, 1)
		time.sleep(trosso)
		dcsd_lights_set(1, 0, 0)
		time.sleep(tverde)
		dcsd_lights_set(0, 1, 0)
		time.sleep(random.randint(3, 10))
	
luciDevice = connettiDCSD()
semaforo(10, 20)
dcsd_lights_set(0,0,0) # Spegne tutte le luci
luciDevice.close()