[presto] fix resolution (480x480, hi-res)

presto/README.md

@@ -1,6 +1,6 @@
 # Presto Music Library - Records On This Day
 
-A MicroPython application for the [Pimoroni Presto](https://shop.pimoroni.com/products/presto?variant=54894104019323) (RP2350B, 720×720 touch display, WiFi) that connects to the Music Library API and lets you browse your record collection by release date.
+A MicroPython application for the [Pimoroni Presto](https://shop.pimoroni.com/products/presto?variant=54894104019323) (RP2350B, 480×480 touch display, WiFi) that connects to the Music Library API and lets you browse your record collection by release date.
 
 ## Features
 
@@ -21,6 +21,9 @@ A MicroPython application for the [Pimoroni Presto](https://shop.pimoroni.com/pr
 - 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

presto/main.py

@@ -1,7 +1,7 @@
 """
 Presto Music Library
 ===================================================
-A MicroPython application for the Pimoroni Presto (RP2350B, 720x720 touch
+A MicroPython application for the Pimoroni Presto (RP2350B, 480x480 touch
 display, WiFi) that connects to the Music Library API and lets you:
 - browse records by release date
 - search records in the collection
@@ -53,8 +53,8 @@ except ImportError:
 # API endpoint (production server)
 API_BASE = "https://music-library.claudio-ortolina.org"
 
-# Setup for the Presto display
-presto = Presto()
+# Setup for the Presto display in full-resolution 480x480 mode.
+presto = Presto(full_res=True)
 display = presto.display
 WIDTH, HEIGHT = display.get_bounds()
 touch = presto.touch

presto/poc.py

@@ -17,7 +17,7 @@ from presto import Presto
 # HARDWARE
 # ============================================================================
 
-presto = Presto()
+presto = Presto(full_res=True)
 display = presto.display
 touch = presto.touch
 WIDTH, HEIGHT = display.get_bounds()