morse

Implements ITU M.1677 : International Morse code.

Why yet another Morse library?

NPM reveals a load of existing Morse code libraries, but

• ecto/morse does not support transmission signals, only .--. notation

• dito for jarofghosts/morse-stream

• skattyadz/node-morse-code is bound to Arduino/ events

• joeLepper/morse-maker is based on keyboard events, and a flashing PI

• ryanseys/tessel-morse …​ well, here i stopped and started coding

What’s that transmission thing again?

Morse code is a two way transformation from text to dots and spaces notation. The letter 'A' e.g. is represented as .-, and vice versa. But if you want to transmit this information, be it via air (sound or light), copper (electricity), or any other medium, you need a pulse and a signal/ no signal. At its heart, Morse code is a digital signal (on or off).

on     +---+   +-----------+
       |   |   |           |                    (1)
off   -+   +---+           +-----------

pulse ---+---+---+---+---+---+---+---+---> t

1. Transmission signal for letter 'A'

Prerequisites

• Go

Installation

go get github.com/jhinrichsen/morse

To do list

• Decoding

• Make implementation indepent of type String (support streams e.a.)

• Maybe support Samuel Morse’s original version, just to allow pluggable tables

Specifications

ITU [http://www.itu.int/rec/R-REC-M.1677-1-200910-I/]