Update README for version 7.2 UI screen control fixes

README.md

@@ -11,12 +11,45 @@ This project is an Arduino‑IDE‑friendly firmware for the **Seeed XIAO ESP32
 - Uses a white LED and an optional presence sensor to give quick visual feedback.
 - Stores daily price data in **NVS** to survive reboots and reduce API calls.
 
-The latest sketch implements **Version 7.1** with separate provider fee support for negative spot prices.
+The latest sketch implements **Version 7.2** — a bug-fix release that
+restores primary-screen scrolling, fixes double-click → secondary-screen
+switching on the ESP32-C3, and stabilises end-of-day behaviour when no
+tomorrow data is available yet. The v7.1 negative-price provider fee logic
+is preserved unchanged.
 
 ---
 
 ## Version Highlights
 
+### v7.2 - Button Robustness & Screen-Control Fixes (2026-08-04)
+
+Bug-fix release. Resolves the three control glitches reported for v7.1:
+"cannot scroll the primary screen at 20:35", "double-click does not switch
+to the secondary screen", and "strange end-of-day behaviour at 22:15 with
+no tomorrow data". No fee/VAT math, NVS layout, API scheduling or
+48-hour scrolling behaviour was changed.
+
+- **Fix 1 – Primary-screen scroll** works at any hour of the day:
+  past-hour blanking in `displayPriceRow()` simplified from
+  `currentHour < 22` to a plain `localHourIndex < currentHour`, and the
+  `currentHour >= 21` override in `displayPrimaryList()` removed.
+- **Fix 2 – Double-click** reliably toggles to the secondary screen.
+  A new `bool buttonEverReleased` flag prevents a false
+  "Long press detected!" from firing right after every reset on the
+  ESP32-C3 (floating button pin + `buttonPressStartTime = 0` was making
+  the long-press detector trip on phantom 3-second holds during boot).
+- **Fix 3 – End-of-day scroll** is stable with no tomorrow data. The
+  `allowedAhead = 2` hack in `advanceDisplayOffset()` is gone, so the
+  user can no longer scroll into "24:00 / 25:00" and wrap back to 00:00.
+- **Fix 4 (bonus) – Auto-return timer** now resets on every click, so
+  scrolling the secondary status page no longer jumps back to the primary
+  view mid-read.
+
+See [`VERSION.md`](./VERSION.md) for the highlights and
+[`CHANGELOG.md`](./CHANGELOG.md) for full implementation details.
+
+---
+
 ### v7.1 - Negative Price Provider Fee (2026-04-06)
 
 Added a separate configurable provider fee for negative spot prices, correctly
@@ -229,7 +262,7 @@ if (dataIndex == lowIdx) {
 
 ---
 
-## Behavior & Display States (v7.1)
+## Behavior & Display States (v7.2)
 
 The display changes based on which data buffer is being used and the status of the fetch:
 
@@ -238,7 +271,7 @@ The display changes based on which data buffer is being used and the status of t
 | **Normal (Today)** | Shows current prices and 15-min details. Hours are marked as HH:00. | White LED reflects current price status (Breathe, Solid, or Blink). |
 | **Scrolling (Tomorrow)** | Future prices are displayed. Hours are marked with HH:>> to indicate "Tomorrow". | **Pinned to Today:** The LEDs continue showing the _actual current_ price status even while browsing future hours. |
 | **No Data** | Displays: "No data for today, Press & hold to, refresh manually." | White LED is turned **OFF** to avoid misleading price signals. |
-| **Connecting** | "Elec. Rate SI v7.1" followed by "Connecting..." and progress dots. | Built-in LED is **OFF** until connection is established. |
+| **Connecting** | "Elec. Rate SI v7.2" followed by "Connecting..." and progress dots. | Built-in LED is **OFF** until connection is established. |
 
 ### Key UX Principle: LEDs Stay Pinned to Current Time
 
@@ -353,7 +386,7 @@ All available bidding zones:
 
 ## Hardware Setup (Detailed)
 
-This section merges the original v5.5 instructions with the current v7.1 hardware expectations.
+This section merges the original v5.5 instructions with the current v7.2 hardware expectations.
 Follow it carefully to reproduce the working setup.
 
 ### 1. Microcontroller
@@ -503,7 +536,7 @@ The LED is driven with various patterns to indicate price level; see "LED Price
 
 ---
 
-## Firmware Features (v7.1)
+## Firmware Features (v7.2)
 
 ### Core Display & Pricing
 
@@ -719,7 +752,7 @@ In `processJsonData()`:
 
 A **secondary screen** (toggled via **double‑click**) provides 20 lines of status information, displayed 4 lines at a time:
 
-Typical content (updated for v7.1):
+Typical content (updated for v7.2):
 
 1. Current date and time (`HH:MM  DD.MM.YYYY`)
 2. Separator line (`--------------------`)
@@ -741,7 +774,7 @@ Typical content (updated for v7.1):
 17–20. Credits and version:
     - `energy-charts.info`
     - `dynamic electricity`
-    - `price ticker v7.1`
+    - `price ticker v7.2`
     - `by Legolas-2025`
 
 ---
@@ -774,7 +807,7 @@ If NVS does not contain valid Wi‑Fi credentials, or if connecting fails repeat
    - `DNSServer` (from ESP32 core)
    - `WebServer` (from ESP32 core)
    - `Preferences` (built‑in for ESP32)
-3. Open the v7.1 `.ino` file (`ESP32_standalone_electricity_ticker_7_1.ino`).
+3. Open the v7.2 `.ino` file (`ESP32_standalone_electricity_ticker_7_2.ino`).
 4. In Tools:
    - Board: `Seeed XIAO ESP32C3`
    - Port: choose the correct serial port.
@@ -790,6 +823,8 @@ If NVS does not contain valid Wi‑Fi credentials, or if connecting fails repeat
 
 ## Versioning & Changelog
 
+- **v7.2** – Button robustness & screen-control fixes (2026-08-04). See
+  highlights above; full details in [`CHANGELOG.md`](./CHANGELOG.md).
 - **v7.1** – Negative price provider fee:
   - Separate `NEG_PRICE_COMPANY_FEE_PERCENTAGE` constant (default `30.0` %)
   - Positive prices: `raw × (1 + pos_fee) × (1 + VAT)`