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TEF6686_ESP32 - Advanced Tuner software for NXP TEF668x tuners with ESP32 board Based on Catena / NXP semiconductors API.
!
It's dedicated to projects based on original PE5PVB's boards and to chinese clones that are sold by many sellers on the Internet.

Features

• Frequency range: 65-108MHz and 144kHz-27MHz AM
• Connection with RDS Spy, XDR-GTK and StationList over Wi-Fi
• Almost all RDS data
• Automatic / manual scan
• Squelch function
• Battery level indicator
• S-meter and modulation indicator
• Various themes
• Many languages
• FullSearchRDS function (only TEF6687/9)
• FMSI Stereo Improvement (only TEF6687/9)
• AF switching
• Memory presets

And many more...

Photo above showing "Advanced RDS" screen

Getting started

Setup

If you want to setup your device please hold during device boot:

• BW button to change rotary encoder direction
• Mode button the flip screen
• Band button to calibrate analogue S-meter
• Rotary button to switch between normal and optical rotary encoder
• BW + Mode buttons to calibrate touch screen
• BW + Band buttons to toggle screen inversion
• BW + Rotary buttons to set all settings back to default values

Connecting analog signal meter

                      to meter
                          |
                R         V
  IO27 -------=====-----=====---|
               1 k     5 k POT

Crystal option of TEF668X

Depending on the voltage of ESP32 IO15, different crystal oscillators are supported.
Please select the appropriate resistor for the following conditions.

                         R15
                          |
                          |
                          |
  VCC_3V3_CPU -----=====--•--=====----|GND
                    R49       R48

IO15: 0V        → 9.216M
IO15: 1V        → 12M
IO15: 2V        → 55.466M
IO15: (2V~3.3V] → 4M

Manual

Screensaver triggered

• BAND SHORT PRESS: Wakeup Screen
• BAND LONG PRESS: Wakeup Screen
• ROTARY CHANGE: Wakeup Screen

Screensaver disabled

• BAND SHORT PRESS: Switch band
• BAND LONG PRESS: Open advanced RDS viewer
• ROTARY SHORT PRESS: Set stepsize or navigate
• ROTARY LONG PRESS: Toggle iMS & EQ
• MODE SHORT PRESS: Switch between auto/manual or exit menu
• MODE LONG PRESS: Open menu
• BW SHORT PRESS: Switch forced mono, or auto stereo
• BW LONG PRESS: Switch bandwidth, hold button and use rotary to select value