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CHANGELOG.md

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Changelog

The project documentation is avaiable at https://esp32-si4732.github.io/ats-mini/

1.05 (2025-03-16)

Added

  • Add EEPROM write icon
  • New color themes: Bluesky, eInk, Pager, Orange, Night, Phosphor
  • Support for color themes
  • Theme editor. To enable it, recompile the firmware with THEME_EDITOR=1 and connect via USB serial port. Press @ to print the current theme, change it using any text editor (see themes.h for details), then press ! and paste the updated theme (effective until the receiver is powered off). Once you are happy, add the resulting colors to themes.h. Check out a useful color picker as well https://chrishewett.com/blog/true-rgb565-colour-picker/

Changed

  • Add repo URL to the About screen, hide battery

Fixed

  • Fix tuner scale height on MW1 & MW2 bands

1.04 (2025-03-12)

Changed

  • Refactor the code to make it more DRY
  • Return the Volos Project UI with some changes. The new s-meter also serves as a stereo indicator on FM.

1.03 (2025-03-11)

Added

  • Add screenshot feature, new command to toggle serial log. Send "C" over the serial port to make a screenshot, then feed the resulting HEX dump to the "xxd -r -p" command to get a BMP image. Use the "t" command to toggle the serial log.

Changed

  • Center and underline the menu headers. Thanks to R8ADR for the patch

Fixed

  • Fix "P" (button press) serial command

1.02 (2025-03-11)

Added

    • Display timeout has been added (Settings > Sleep), a value of zero disables the timeout
    • Turning the display off/on by long pressing the encoder (2 seconds). This reduces QRM from the display
    • Added "O" and "o" commands (display off and on) to the serial port protocol
  • AM/FM station search by scrolling with the encoder pressed (the search can also be stopped by rotating the encoder)
  • Pressing the encoder for more than 0.5 seconds triggers volume adjustment (this compensates the Volume menu option no longer being highlighted by default)

Changed

    • The menu has been reorganized, and the Spare items have been removed
    • A Settings menu has been added, and the display brightness adjustment option has been moved there
    • The position in the main menu and settings menu is remembered (until power is turned off)
    • The startup splash screen has been moved to Settings > About (but the reset of settings by turning on the receiver with the encoder pressed still works)
    • The Seek Up/Down menu items have been removed
  • Changed the charging indicator (lightning icon instead of the EXT text)

Fixed

  • Fixed the duplication of the MW2 band name

1.01 (2025-03-11)

Identical to 1.01 by Dave (G8PTN), just recompiled for esp32:esp32@3.1.3 Arduino core.

Added

  • Added "MODE" configuration per band (FM, AM, LSB, USB)

Changed

  • Improved tuning speed by delaying the display updates

1.00 (2025-03-11)

Identical to 1.00 by Dave (G8PTN), just recompiled for esp32:esp32@3.1.3 Arduino core.

Added

  • Added "Brightness" menu option

    • This controls the PWM from 32 to 255 (full on) in steps of steps of 32
    • When the brightness is set lower than 255, PSU or RFI noise may be present

  • Added "Calibration" menu option

    This allows the SI4732 reference clock offset to be compensated per band

  • Added Automatic Volume Control (AVC) menu option. This allows the maximum audio gain to be adjusted.

  • Added GPIO1 (Output) control (0=FM, 1 = AM/SSB)

  • Added a REMOTE serial interface for debug control and monitoring

  • User interface modified:

    • Removed the frequency scale
    • Set "Volume" as the default adjustment parameter
    • Modifed the S-Meter size and added labels
    • All actions now use a single press of the rotary encoder button, with a 10s timeout
    • Added status bar with indicators for Display and EEPROM write activity
    • Added unit labels for "Step" and "BW"
    • Added SSB tuning step options 10Hz, 25Hz, 50Hz, 0.1k and 0.5k
    • Added background refresh of main screen

  • VFO/BFO tuning mechanism added based on Goshante ATS_EX firmware

    • This provides "chuff" free tuning over a 28kHz span (+/- 14kHz)
    • Compile option "BFO_MENU_EN" for debug purposes, manual BFO is not required

Changed

  • Modified FM steps options (50k, 100k, 200k, 1M)

  • Modified the audio mute behaviour

    • Previously the rx.setAudioMute() appeared to unmute when changing band
    • The "Mute" option now toggles the volume level between 0 and previous value

  • Modified the battery monitoring function

    • Uses set voltages for 25%, 50% and 75% with a configurable hysteresis voltage
    • Added voltage reading to status bar

  • Settings for AGC/ATTN, SoftMute and AVC stored in EEPROM per mode

    AGC/ATTN (FM, AM, SSB), SoftMute (AM, SSB), AVC (AM, SSB)

Fixed