Looking at the blinking LED was easy, but converting that back into morse code was more difficult than I expected. I will not share how I did it here, just in case you want to try the challenge yourself. However, my code is attached to this post if you're interested in seeing how I solved the problem.
Part 1: Staring at the LED
Part 2:Interpreting the blinksThanks to N2MOH for the morse sender (I also copied your timing constants) and Scott Hanselman for the morse array.