This doesn't work - I can't get my head round the display part of it- See issues
TTGO-CW-Decoder
An attempt at getting the OZ1JHM CW decoder onto a TTGO ESP32
Scrolling text does not work yet! - It needs some help
The OZ1JHM CW Decoder is a Goertzel based decoder for morse code that works very well (not as good as the Mk 1 ear but one of the better ones). The decoder runs quite effectively on an arduino with a LCD display and has been modified by Andy, MM0GYG to include an on screen tuning aid that is very useful. This tuning aid also appears on the QCX CW transceiver
This version takes David Birds ESP32 version and makes a very small tweak to suit the TTGO screen. Credit remains with David, this is only present to provide a reference to a different board / screen combo.
Further to this Jim Harvey has also produced a variant for the STM32 Blue Pill.
This is just another variant of that. Just for the TTGO ESP32 board with 1.4" screen