music_library/presto

Presto Music Library - Records On This Day

A MicroPython application for the Pimoroni Presto (RP2350B, 480×480 touch display, WiFi) that connects to the Music Library API and lets you browse your record collection by release date.

Features

• Month calendar — 7×6 grid with day-of-week headers, today highlight
• Today's records on boot — opens directly to records released on today's date
• Tap a day — see records released on that date with cover art, titles, artist names, format, and release year
• Record detail view — tap any record row to see large cover art, genres, record type, and purchase date
• Month navigation — arrow buttons to browse previous/future months
• Touch scrolling — drag the day view to scroll through longer record lists
• Display sleep — turns the backlight off after 1 minute of inactivity and wakes on touch
• WiFi auto-connect — connects on boot with retry logic
• NTP time sync — calendar always shows the correct date
• Error handling — graceful messages when the server is unreachable or images fail to load

Requirements

• Pimoroni Presto running stock firmware (MicroPython + PicoGraphics + touch driver)
• WiFi network with internet access
• A valid API token for the Music Library API

The app initialises Presto with full_res=True, so all layout and touch coordinates use the display's full 480×480 pixel coordinate system.

Setup

1. Create secrets.py

cp config.example.py secrets.py

Edit secrets.py and fill in your credentials:

WIFI_SSID = "your-wifi-ssid"
WIFI_PASSWORD = "your-wifi-password"
API_TOKEN = "your-api-token"

secrets.py is git-ignored and never committed.

2. Deploy to your Presto

Copy the files to the root of your Presto's flash storage. You can use Thonny, mpremote, or any MicroPython file transfer tool.

Using mpremote:

# Install mpremote if you don't have it
pip install mpremote

# Copy files to the Presto
mpremote fs cp main.py :main.py
mpremote fs cp secrets.py :secrets.py

# Reset the device to start the app
mpremote reset

After secrets.py has been copied to the device once, you can redeploy the app with the project task:

mise run presto

This copies main.py to :main.py and resets the device; it does not copy secrets.py.

Using Thonny:

1. Open Thonny and select "MicroPython (Raspberry Pi Pico)" as the interpreter
2. Open main.py and secrets.py in Thonny
3. Use File → Save Copy → Raspberry Pi Pico to save main.py as main.py and secrets.py as secrets.py
4. Press the reset button on the Presto, or use Run → Send EOF / Soft Reboot

3. The app starts automatically

The Presto runs main.py on boot. The app will:

1. Show a startup screen
2. Connect to WiFi (showing progress)
3. Sync time via NTP
4. Load and display today's records

Usage

Month view

• Today's date is highlighted in blue
• Tap ← → arrows to navigate months
• Tap any day cell to see records released on that date

Day view

• Shows records with cover art, title, artists, format, and release year
• Tap < Back to return to the month view
• Drag vertically to scroll through longer lists
• During drag scrolling, cover art is temporarily shown as lightweight placeholders and redrawn when you lift your finger

Record detail view

• Tap any record row in the day view to open its detail page
• Shows a larger cover image (uses thumb_url, 480px source), the full title, artists, genres, record type, format, release year, and purchase date
• Drag vertically to scroll if the content is taller than the screen
• The header bar stays fixed at the top while the cover and info scroll underneath
• Tap < Back to return to the day view
• If the record can be scrobbled, a "Scrobble" button appears at the bottom — tap it to scrobble the release to Last.fm; "Done" confirms success

Display sleep

• After 1 minute with no touch input, the display backlight turns off
• Touch the screen once to wake it; the wake touch is ignored so it will not also press a button or scroll
• WiFi is left enabled while the display sleeps. If it drops while idle, the app reconnects on wake

Error states

• "Could not reach server" — the API is unreachable. Tap anywhere on the day view to retry, or tap Back to return to the month view.
• "WiFi connection failed" — WiFi credentials are wrong or the network is down. The app retries every 10 seconds.
• Grey placeholder in place of cover art — the image could not be loaded (network issue or invalid URL). The rest of the record info is still shown.

Files

presto/
  main.py # Application source, deployed to the device as main.py
  config.example.py     # Template for secrets.py
  secrets.py            # Your credentials (git-ignored, create from example)
  README.md             # This file

Testing

Prerequisites

The test harness uses the pimoroni-emulator (already installed via mise) to provide a headless display with mock MicroPython modules. You also need pytest (installed via the project venv).

Running tests

# From the presto/ directory:
mise run test

# Or directly:
cd presto
pytest tests/ -v

What the tests cover

Smoke tests verify that every screen renders without crashing:

Test	Screen
test_home_screen	Home / splash
test_month_view	Month calendar grid
test_day_view_empty	Day view (no records)
test_day_view_error	Day view (error state)
test_record_detail	Record detail view
test_search_input	Search input screen
test_search_results	Search results list

All tests use mock data and do not make network requests. Screenshots are saved to presto/tests/fixtures/ for manual inspection.

Adding new tests

1. Add a test method to presto/tests/test_screens.py following the existing pattern:
   • Create an AppState via main_module.AppState()
   • Set the appropriate view state fields
   • Call the screen's draw function
   • Optionally save a screenshot
2. Use make_mock_record() from tests.conftest if your test needs record data.
3. Run mise run test to verify.

Troubleshooting

Symptom	Likely cause	Fix
Stuck on "secrets.py not found"	secrets.py not on the device	Copy config.example.py to secrets.py and deploy it
Stuck on "WiFi connection failed"	Wrong SSID/password, or network down	Check secrets.py credentials; verify network is up
"Could not reach server" on day tap	API token invalid, or server down	Check API_TOKEN in secrets.py; verify the server is running
Images show as grey rectangles	JPEG decoder not available, or image URLs unreachable	Check firmware version; ensure Presto has internet access
Touch not responding	Firmware touch API mismatch	Try updating Presto firmware to the latest version
Display is black after idle	Backlight sleep is active	Touch once to wake the display

API Endpoint

The app talks to:

GET https://music-library.claudio-ortolina.org/api/v1/collection/on_this_day?date=YYYY-MM-DD
Authorization: Bearer <API_TOKEN>

Response format:

{
  "records": [
    {
      "id": "...",
      "selected_release_id": "abc-123-uuid",
      "title": "Album Title",
      "artists": ["Artist Name"],
      "micro_cover_url": "https://.../api/v1/assets/thumb.jpg?width=40",
      "mini_cover_url": "https://.../api/v1/assets/thumb.jpg?width=150",
      "thumb_url": "https://.../api/v1/assets/thumb.jpg?width=480",
      "release_date": "1973-03-01",
      "genres": ["Rock"],
      "format": "Vinyl",
      "record_type": "LP",
      "purchased_at": "2024-11-15"
    }
  ]
}

The Presto client prefers mini_cover_url for the 80×80 full-resolution row thumbnail, then falls back to micro_cover_url and thumb_url. The detail view prefers thumb_url for the full-size cover, falling back to mini_cover_url and micro_cover_url.

License

This application is part of the Music Library project.