# Changelog

## 2026-10-18 — WAV via DAC2 only (touch-safe)

- Drop I2S INTERNAL_DAC (it enables GPIO25 and kills touch).
- PCM WAV → RAM → dac_output on GPIO26 only; Beep tab unchanged.

## 2026-10-18 — Beep tab + WAV tab

- Keep 16 LEDC beeps on Beep tab.
- WAV tab scans TF (/ and /wav); short files load to RAM then play via Internal DAC.
- Core0 decode task; gain capped for onboard amp.

## 2026-10-18 — Built-in UI beep sounds

- Drop MP3; LEDC tone bank: Click/Key/Pop/Confirm/Cancel/Success/Error/...
- Scrollable SOUNDS list; tap to play.

## 2026-10-18 — Smooth MP3 + keep UI alive

- MP3 decode on FreeRTOS core0; UI/touch on core1.
- DAC1(GPIO25) disabled while playing so touch CLK works.
- No SD rescan during playback (SPI contention).

## 2026-10-18 — Music list from TF

- Scan root + /music for .mp3; scrollable list; tap row to play.
- PLAY uses selected track; auto-enables speaker on list tap.

## 2026-10-18 — Play /paomo.mp3 from TF

- PLAY streams `/paomo.mp3` via ESP8266Audio + internal DAC (GPIO26).
- Serial `#PUT` + `tools/sd_put.py` to copy MP3 onto the TF card.

## 2026-10-18 — Canon in D melody

- Replace Twinkle Twinkle with Pachelbel Canon in D (monophonic).

## 2026-10-17 — ASCII glyphs + volume slider

- Replace ·/— (tofu boxes) with ASCII `-` / `|`.
- Add VOL slider (0-100); live duty update while playing.

## 2026-10-17 — UI layout refresh

- Compact 320x240 layout: header status, capacity hero, usage bar, dual actions.
- Drop on-screen touch debug cursor; keep calibrated touch.cpp unchanged.

## 2026-10-17 — Restore TF + speaker (touch map frozen)

- Re-add SD info UI and speaker ON/OFF + Play Music.
- Default volume 20% via LEDC duty (GPIO26).
- Touch mapping left unchanged (diagonal BL/TR fix).

## 2026-10-17 — Touch-only then calibrated

- Stripped to touch test; fixed BL/TR with diagonal mirror (not 180°).