The control of a radio station is usually done by an application installed on a target machine, this application being often developed specifically for an operating system (Windows, Unix, …). After a description of the functional aspects in a previous article, this video presents the technical aspects of the implementation of the FT-857D CAT in a web browser.
The work was to port the FT-857D CAT library and the corresponding display application on the ESP32 T-Display. This software was originally developed on an Arduino Nano (see article) The goal was to have a platform of the same size as the Arduino Nano but with in addition to the serial link, an on-board WiFi and Bluetooth.
This application: – displays an image and then a timed sequence of screens of different colors (red, blue, green), – displays the power voltage on short-pressed GPIO 35 button, – puts the ESP32 to sleep on the GPIO 35 button long press, – launches a WiFi scan on short press of the GPIO 0 button and displays the result.