I updated the sketch I'm currently using.
Please keep in mind, that I only tested this with my own setup. To use it, at least the number of LEDs has to be adjusted. Also maybe the color order (which can be configured in Hyperion anyway). Also you maybe want to comment out the sleep mode and intro animation stuff if you don't want that.
Although this works perfectly fine for me, I'm currently also testing a Pro Micro (Atmega32U4) which has an integrated USB-interface and should be significantly faster (bandwidth) than the Arduino Mega/Uno/Nano/Pro Mini.
I also attached the Python script I used to create the prefixes.
Usage is pretty simple:
If no argument is given you have to enter the number of LEDs and it will give you the corresponding prefix.
If started with i.e. "--list 500" - it will list all 500 prefixes for 1-500 LEDs.
#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
Generate prefix for Adalight/Hyperion Arduino sketch
'''
from __future__ import print_function
import sys
def calc_prefix(num_leds):
prefix = [ord(c) for c in "Ada"]
high_byte = ((num_leds - 1) >> 8) & 0xff
low_byte = (num_leds - 1) & 0xff
checksum = high_byte ^ low_byte ^ 0x55
prefix.extend([high_byte, low_byte, checksum])
return prefix
def print_prefix_list(up_to):
for i in range(1, up_to + 1):
prefix = calc_prefix(i)
sys.stdout.write("{:<15}".format(i))
out = [format(b, "02x") for b in prefix]
sys.stdout.write(" ".join(out))
sys.stdout.write("\n")
def main():
args = sys.argv[1:]
if not args:
num_leds = raw_input("Please enter total number of LEDs: ")
if not num_leds.isdigit():
print("You have to enter a number!")
else:
num_leds = int(num_leds)
prefix = calc_prefix(num_leds)
print("\n")
print("Number of LEDs: {:d}".format(num_leds))
print("\n")
sys.stdout.write("Prefix: ")
sys.stdout.write(" ".join([format(b, "02x") for b in prefix]))
print("\n")
else:
if args[0] == "--list" or args[0] == "-l":
if args[1].isdigit():
print_prefix_list(int(args[1]))
return
if __name__ == "__main__":
main()
