update readme for new v1.5 features

README.md

@@ -33,6 +33,7 @@ A fork created specifically to focus on enabling BLE & WiFi companion firmware f
   - [Emoji Picker](#emoji-picker)
   - [SMS & Phone App (4G only)](#sms--phone-app-4g-only)
   - [Web Browser & IRC](#web-browser--irc)
+  - [Alarm Clock (Audio only)](#alarm-clock-audio-only)
   - [Lock Screen (T-Deck Pro)](#lock-screen-t-deck-pro)
 - [T5S3 E-Paper Pro](#t5s3-e-paper-pro)
   - [Build Variants](#t5s3-build-variants)
@@ -138,7 +139,7 @@ If you're loading firmware from an SD card via the LilyGo Launcher firmware, use
 Once Meck is installed, you can update firmware directly from your phone — no computer or serial cable required. The device creates a temporary WiFi access point and you upload the new `.bin` via your phone's browser.
 
 1. Download the new **non-merged** `.bin` to your phone (from GitHub Releases, Discord, etc.)
-2. On the device: **Settings → Firmware Update → Enter** (T-Deck Pro) or **tap** (T5S3)
+2. On the device: **Settings → OTA Tools → Firmware Update → Enter** (T-Deck Pro) or **tap** (T5S3)
 3. The device starts a WiFi network called `Meck-Update-XXXX` and displays connection details
 4. On your phone: connect to the `Meck-Update` WiFi network, open a browser, go to `192.168.4.1`
 5. Tap **Choose File**, select the `.bin`, tap **Upload**
@@ -148,6 +149,8 @@ The partition layout supports dual OTA slots — the old firmware remains on the
 
 > **Note:** Use the **non-merged** `.bin` for OTA updates. The merged binary is only needed for first-time USB flashing.
 
+**OTA Tools (v1.5+):** The firmware update has moved into **Settings → OTA Tools**, a submenu that also contains the new **SD File Manager**. The file manager creates the same WiFi access point and serves a browser-based interface where you can browse, upload, download, and delete files on the SD card from your phone — useful for managing audiobooks, alarm sounds, e-books, and notes without ejecting the SD card. Both OTA tools work on all variants including standalone builds.
+
 ---
 
 ## Path Hash Mode (v0.9.9+)
@@ -206,6 +209,7 @@ The T-Deck Pro firmware includes full keyboard support for standalone messaging
 | B | Open web browser (BLE and 4G variants only) |
 | T | Open SMS & Phone app (4G variant only) |
 | P | Open audiobook player (audio variant only) |
+| K | Open alarm clock (audio variant only) |
 | F | Open node discovery (search for nearby repeaters/nodes) |
 | H | Open last heard list (passive advert history) |
 | G | Open map screen (shows contacts with GPS positions) |
@@ -348,6 +352,7 @@ Press **S** from the home screen to open settings. On first boot (when the devic
 | GPS Baud Rate | A / D to cycle (Default 38400 / 4800 / 9600 / 19200 / 38400 / 57600 / 115200), Enter to confirm. **Requires reboot to take effect.** |
 | Path Hash Mode | W / S to cycle (1-byte / 2-byte / 3-byte), Enter to confirm |
 | Dark Mode | Toggle inverted display — white text on black background (Enter to toggle) |
+| Larger Font | Toggle larger text size on channel messages, contacts, DM inbox, and repeater admin screens (Enter to toggle) |
 | Auto Lock | A / D to cycle timeout (None / 2 / 5 / 10 / 15 / 30 min), Enter to confirm |
 | Contacts >> | Opens the Contacts sub-screen (see below) |
 | Channels >> | Opens the Channels sub-screen (see below) |
@@ -426,6 +431,55 @@ The browser is a text-centric reader best suited to text-heavy websites. It also
 
 For full documentation including key mappings, WiFi setup, bookmarks, IRC configuration, and SD card structure, see the [Web App Guide](Web_App_Guide.md).
 
+### Alarm Clock (Audio only)
+
+Press **K** from the home screen to open the alarm clock. This is available on the audio variant of the T-Deck Pro (PCM5102A DAC). Set up to five daily alarms that play custom MP3 files through the headphone jack.
+
+**Setup:**
+
+1. Place MP3 files (44100 Hz sample rate) in `/alarms/` on the SD card
+2. Press **K** to open the alarm clock
+3. Select an alarm slot (1–5) with **W / S** and press **Enter** to edit
+4. Set the hour and minute, then choose an MP3 file from the list
+5. Press **Enter** to save the alarm
+
+| Key | Action |
+|-----|--------|
+| W / S | Navigate alarm slots / adjust time |
+| A / D | Switch between hour and minute fields |
+| Enter | Edit slot / save alarm / select MP3 |
+| X | Delete selected alarm |
+| Q | Back to home screen |
+
+**When an alarm fires:**
+
+The selected MP3 plays through the headphone jack, even if you're on another screen or playing an audiobook.
+
+| Key | Action |
+|-----|--------|
+| Z | Snooze for 5 minutes |
+| Any other key | Dismiss alarm |
+
+Alarm configuration is stored in `/alarms/.alarmcfg` on the SD card. Alarms persist across reboots — if the RTC has valid time (via GPS or companion app sync), alarms fire at the correct time after a restart.
+
+> **Note:** MP3 files should be encoded at **44100 Hz** sample rate. Lower sample rates may cause distortion due to ESP32-S3 I2S hardware limitations (same requirement as the audiobook player).
+
+**SD Card Folder Structure:**
+
+```
+SD Card
+├── alarms/
+│   ├── .alarmcfg             (auto-created, stores alarm slot config)
+│   ├── morning-chime.mp3
+│   ├── rooster.mp3
+│   └── gentle-bells.mp3
+├── audiobooks/               (existing — audiobook player)
+│   └── ...
+├── books/                    (existing — text reader)
+│   └── ...
+└── ...
+```
+
 ### Lock Screen (T-Deck Pro)
 
 Double-click the Boot button to lock the screen. The lock screen shows the current time, battery percentage, and unread message count. The CPU drops to 40 MHz while locked to reduce power consumption.
@@ -530,6 +584,7 @@ The T5S3 Settings screen includes one additional display option not available on
 | Setting | Description |
 |---------|-------------|
 | **Dark Mode** | Inverts the display — white text on black background. Tap to toggle on/off. Available on both T-Deck Pro and T5S3. |
+| **Larger Font** | Increases text size on channel messages, contacts, DM inbox, and repeater admin screens. Tap to toggle on/off. Available on both T-Deck Pro and T5S3. |
 | **Portrait Mode** | Rotates the display 90° from landscape (960×540) to portrait (540×960). Touch coordinates are automatically remapped. Text reader layout recalculates on orientation change. T5S3 only. |
 
 These settings are persisted and survive reboots.
@@ -754,12 +809,13 @@ There are a number of fairly major features in the pipeline, with no particular
 - [X] OTA firmware update via phone
 - [X] DM inbox with per-contact unread indicators
 - [X] Roomserver message handling and mark-read on login
+- [X] Alarm clock with custom MP3 sounds (audio variant)
+- [X] Customised user option for larger-font mode
 - [ ] Fix M4B rendering to enable chaptered audiobook playback
 - [ ] Better JPEG and PNG decoding
 - [ ] Improve EPUB rendering and EPUB format handling
 - [ ] Figure out a way to silence the ringtone
 - [ ] Figure out a way to customise the ringtone
-- [ ] Customised user option for larger-font mode
 
 **T5S3 E-Paper Pro:**
 - [X] Core port: display, touch input, LoRa, battery, RTC
@@ -780,8 +836,8 @@ There are a number of fairly major features in the pipeline, with no particular
 - [X] OTA firmware update via phone (WiFi variant)
 - [X] DM inbox with per-contact unread indicators
 - [X] Roomserver message handling and mark-read on login
+- [X] Customised user option for larger-font mode
 - [ ] Improve EPUB rendering and EPUB format handling
-- [ ] Customised user option for larger-font mode
 
 ## 📞 Get Support