DSPi ESP32 Front Panel v1.2.1

DSPi ESP32 Front Panel v1.2.1

Playback-stability maintenance release

Version 1.2.1 republishes the current tested main firmware state as a clean, traceable release so the Git tag, source archive and generated binaries all correspond to the same code.

Music-player reliability

• Include the post-v1.2.0 SD/FLAC playback stabilisation from commit fa5ac846818a0387da7b86320035135c5716f6da.
• Increase decoded PCM reserve capacity with preferred, fallback and emergency PSRAM ring sizes.
• Keep I2S output isolated on CPU1 while allowing decoder/SD work to run on either core.
• Use 4 KiB decoder SD read slices for more efficient contiguous reads.
• Raise low-ring protection thresholds and add detailed SD/decoder/ring telemetry to serial command s.

Other fixes carried from current main

• Document the tested ESP32-to-DSPi I2S wiring.
• Fix occupied preset overwrite acknowledgement timing on compatible DSPi firmware.

Build environment

• ESP32 Arduino core 3.3.11
• GFX Library for Arduino 1.6.5
• NimBLE-Arduino 2.5.0
• SdFat 2.3.0
• Waveshare ESP32-S3-LCD-2 / ESP32S3 Dev Module
• QIO, 16 MB flash, 3 MB application / 9.9 MB FATFS, OPI PSRAM

Upgrade

Use the application-only image at offset 0x10000 to preserve BLE pairing, learned mappings and panel settings. Use the full merged image at offset 0x0 for a clean installation or recovery.

The release binaries should be generated with Build-DSPi-Front-Panel-v1.2.1.ps1; use the resulting SHA256SUMS-v1.2.1.txt values when publishing the GitHub release.

DSPi ESP32 Front Panel v1.2.0

DSPi ESP32 Front Panel v1.2.0

VU interface and reliability release

Version 1.2.0 brings the complete VU visual system, clearer preset and settings navigation, DSPi Console change notifications, and hardened long-running 48 kHz SD playback to the public front-panel firmware.

Theme and display

• Add independent Main Text, Accent, Volume Meters and Analog VU colour settings under System Setup > Screen Settings > Theme.
• Add a thirty-colour palette with three shades per colour family for text, accents and digital/Home meters.
• Keep warning, fault, clip, success and black-background safety colours fixed.
• Preserve the original white/cyan appearance as the migration-safe default.
• Add Cyan, Green, honey-gold Amber, Magenta, Warm White and Red analogue VU faces.
• Preserve the approved analogue artwork, scale, shading, black curve, text, needle geometry, calibration and meter ballistics.
• Cache custom analogue faces once in PSRAM so every colour animates through the same lightweight frame path as original Cyan.
• Add configurable Dim, Screen Off, Digital VU and Analog VU idle actions with safe wake/return behaviour.
• Keep the Now Playing album/folder line at full brightness while retaining the original static two-line song-title layout.

Menus and presets

• Redesign System Setup, Screen Settings, Idle Screen and Theme as consistent list views.
• Present all ten preset slots in a compact music-browser-sized list, including empty slots.
• Keep short Select as an in-list preset load without forcing a Home overlay.
• Use a five-second Select hold to stop music safely and save the highlighted preset after explicit confirmation.
• Save DSPi feature parameters, User Volume and the associated panel screen/theme settings with the preset.
• Use 1 dB User Volume steps throughout the panel controls.

DSPi runtime integration

• Confirm Console-originated User Volume, preset, source, Loudness, Crossfeed, Leveller and Psy Bass changes through exact UART readbacks.
• Use the same Home full-screen notification path for confirmed Console changes and local encoder/D-pad/BLE actions.
• Prevent boot synchronisation and unchanged polling from creating false notifications.
• Keep music on the normal DSPi I2S Home source rather than a separate Home layer.
• Stop local music when another input takes ownership; starting local music selects the compatible I2S route.
• Keep valid PCM sample-rate metadata in the selected Accent colour on every input.

Music-player reliability

• Keep 44.1 and 48 kHz WAV, FLAC and MP3 playback, seeking, folder navigation, artwork and automatic track advance.
• Coalesce held browser navigation and defer expensive scans/redraws when the PCM reserve is low.
• Isolate I2S output and decoder scheduling from long automatic Bluetooth reconnect scans.
• Defer background BLE reconnect scans during timing-critical playback while retaining connected remote reports.
• Prevent hidden album-art work from continuing after leaving Now Playing.
• Add silent underrun-event, longest-underrun, last-event and PCM low-water telemetry to serial command s.

DSPi compatibility

• DSPi firmware v1.1.5/V28 and compatible v1.1.6 beta protocol builds.
• Four-input S/PDIF inventory including S/PDIF 4 when reported and enabled.
• Older compatible three-input DSPi configurations remain supported.

Build environment

• ESP32 Arduino core 3.3.11
• GFX Library for Arduino 1.6.5
• NimBLE-Arduino 2.5.0
• SdFat 2.3.0
• Waveshare ESP32-S3-LCD-2 / ESP32S3 Dev Module
• QIO, 16 MB flash, 3 MB application / 9.9 MB FATFS, OPI PSRAM

Verified release images

• Application image, 1,894,336 bytes:
  CEF24D1A44462CC346BF78C755D02EDC37EF4AD61C6F4CEB3D98F83261702788
• Full merged image, 16,777,216 bytes:
  9EE74D3E646D23A6DA0B2A2F2A075BA05B2EF5F658731439FAFCAECB77C20749

Upgrade

Use the application-only image at offset 0x10000 to preserve BLE pairing, learned mappings and panel settings. Use the full image at offset 0x0 only for a clean installation or recovery.

DSPi ESP32 Front Panel v1.1.3

DSPi ESP32 Front Panel v1.1.3

Compatibility update

Version 1.1.3 updates the public ESP32 front-panel firmware for DSPi firmware v1.1.5.

Changes

• Add S/PDIF 4 as input-source value 6.
• Expand the front-panel S/PDIF inventory from three to four inputs.
• Parse REQ_GET_SPDIF_INPUT_CONFIG (0xEF) from the device-reported input count instead of requiring an exact five-byte, three-input response.
• Accept both the older three-input response and the current four-input response.
• Keep source selection, source readback, preset restoration and media-route restoration aligned with the expanded source enum.
• Preserve all v1.1.2 music-player, Wi-Fi transfer, BLE remote, display and VU functionality.

DSPi compatibility

• DSPi firmware v1.1.5: supports all four selectable S/PDIF inputs.
• Earlier compatible DSPi firmware: remains supported; S/PDIF 4 stays hidden when it is not reported or enabled.

Build environment

• ESP32 Arduino core 3.3.11
• GFX Library for Arduino 1.6.5
• NimBLE-Arduino 2.5.0
• SdFat 2.3.0
• Waveshare ESP32-S3-LCD-2 / ESP32S3 Dev Module
• QIO, 16 MB flash, 3 MB application / 9.9 MB FATFS, OPI PSRAM

Upgrade

Use the application-only image at offset 0x10000 to preserve BLE pairing and panel settings. Use the full image at offset 0x0 only for a clean installation or recovery.

DSPi ESP32 Front Panel v1.1.2

Important

This historical release predates DSPi firmware v1.1.5 four-input S/PDIF compatibility. Users running DSPi v1.1.5 or later should install v1.1.3.

DSPi ESP32 Front Panel v1.1.2 ## New in this version - Adds SD-card music playback for WAV, FLAC and MP3 files. - Adds album and folder browsing, artwork display, pause, seek and track navigation. - Adds Wi-Fi Music Transfer with browser-based upload, folder creation and deletion. - Adds live upload progress, speed and estimated completion time. - Adds safe transfer shutdown before returning to normal media use. - Improves long-running playback stability by keeping SD reads bounded and cooperative. - Keeps normal playback on the shared 20 MHz SD path with 10 MHz and 4 MHz fallbacks. - Retains preset control, source selection, volume limit, display settings, meters and BLE remote support. ## Compatibility This firmware targets the Waveshare ESP32-S3-LCD-2 front panel and the DSPi UART interface used by the existing project.

DSPi ESP32 Front Panel v1.1.0

Full Changelog: v1.0.0...v1.1.0

DSPi ESP32 Front Panel v1.0.0

Initial public release.

Includes:

• ESP32-S3 front-panel firmware
• Analogue and stereo VU displays
• Rotary encoder control
• BLE remote support
• DSPi UART connection
• Windows flashing script
• Wiring and pin-map instructions