Backup-Mirrors/Standalone-electricity-price-ticker
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Update README for version 6.1.2 changes

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Amir
2026-03-11 20:19:54 +01:00
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@@ -9,8 +9,9 @@ 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 6.1.1**, focusing on:
The latest sketch implements **Version 6.1.2**, focusing on:
- Version 6.1.2 fix: restore correct **white LED indicator** behavior (ESP32 PWM fix; no dim glow when off).
- Version 6.1.1 fix: Correct daily **low/high hourly markers** (now includes negative and **0.0** prices).
- Daily (not hourly) API fetching.
- Robust **NVS storage** of daily price data.
@@ -237,7 +238,7 @@ The LED is driven with various patterns to indicate price level; see “LED Pric
---
## Firmware Features (v6.1.1)
## Firmware Features (v6.1.2)
### Core Display & Pricing
@@ -262,7 +263,7 @@ The LED is driven with various patterns to indicate price level; see “LED Pric
- Local language letters.
- Low‑price and high‑price indicators.
- **Daily min/max markers**:
- The low/high hourly indicators now consider **negative**, **0.0**, and positive prices (v6.1.1 fix).
- The low/high hourly indicators consider **negative**, **0.0**, and positive prices (v6.1.1 fix).
### LED Price Signalling
@@ -275,6 +276,11 @@ The white LED (GPIO 5) reflects the **current 15‑minute interval** price:
- Very expensive → complex “double‑blink with long on” pattern.
- Negative price or no data → LED off.
**Important implementation note (v6.1.2):**
- On ESP32, avoid mixing PWM (`analogWrite`) and `digitalWrite` on the same LED pin.
- The firmware now uses `analogWrite(pin, 0/255)` consistently to guarantee the LED is fully off when gated off.
LED is **disabled** when:
- No data for today.
@@ -558,13 +564,14 @@ If NVS does not contain valid Wi‑Fi credentials, or if connecting fails repeat
---
## Versioning & Changelog
- **v5.5** – 15‑minute detail mode, LED based on current 15‑minute slot, improved DST handling (see file `20251027a_electricity_ticker_10_5_5_latest_DST_and_midnight_fix.ino`).
- **v6.0.0** – First NVS‑enabled version:
- Store daily price data in NVS.
- Reduce API calls to “boot + after‑midnight”.
- Add NVS status section to secondary menu.
- **v6.1.2** – LED indicator restored (broken in previous version):
- Avoid mixing PWM and `digitalWrite` on the same LED pin (ESP32 LEDC behavior).
- Ensures LED is fully off when gated off; patterns operate correctly.
- **v6.1.1** – Daily low/high marker fix:
- Daily min/max and average now include negative and **0.0** prices.
- **v6.1.0** – Midnight fetch & “today” detection fixes:
- Correctly detect **market day** using the last `unix_seconds` timestamp.
- Distinguish between:
@@ -574,6 +581,11 @@ If NVS does not contain valid Wi‑Fi credentials, or if connecting fails repeat
- Two retries every 20 minutes in the first hour (~00:20, ~00:40).
- Then hourly retries (top‑of‑hour) until today’s dataset is available.
- Behavior on reboot and manual long‑press is unchanged, but now respects the improved “today” logic.
- **v6.0.0** – NVS storage & daily fetch:
- Store daily price data in NVS.
- Reduce API calls to “boot + after‑midnight”.
- Add NVS status section to secondary menu.
- **v5.5** – 15‑minute detail mode, LED based on current 15‑minute slot, improved DST handling (see file `20251027a_electricity_ticker_10_5_5_latest_DST_and_midnight_fix.ino`).
See [`CHANGELOG.md`](./CHANGELOG.md) for more details.