From fdf0acb670cc6708713671df1f4e6a4379a3132c Mon Sep 17 00:00:00 2001
From: ghis94 <ghis94>
Date: Mon, 23 Feb 2026 14:48:02 +0100
Subject: [PATCH] Add PRG-driven 3-page OLED UI with idle screen off

---
 src/App.cpp           | 142 +++++++++++++++++++++++++++++++++++++++++-
 src/App.h             |  12 ++++
 src/FrisquetManager.h |   3 +
 3 files changed, 156 insertions(+), 1 deletion(-)

diff --git a/src/App.cpp b/src/App.cpp
index de5a9f2..c0093e1 100644
--- a/src/App.cpp
+++ b/src/App.cpp
@@ -1,12 +1,26 @@
 #include "App.h"
 
+namespace {
+String fmtFloat(float value, uint8_t decimals = 1, const char* unit = "") {
+  if (isnan(value)) {
+    return "-";
+  }
+  String out((double)value, (unsigned int)decimals);
+  if (unit && unit[0] != '\0') {
+    out += unit;
+  }
+  return out;
+}
+}
+
 App::App() : _mqtt(_wifiClient), _frisquetManager(_radio, _cfg, _mqtt) {}
 
 void App::begin() {
   Serial.begin(115200);
   delay(50);
 
-  Heltec.begin(false /*DisplayEnable disable*/, false /*LoRa Disable*/, true /*Serial Enable*/);
+  Heltec.begin(true /*DisplayEnable enable*/, false /*LoRa Disable*/, true /*Serial Enable*/);
+  initLocalUi();
 
   initConfig();
   initNetwork();
@@ -19,6 +33,7 @@ void App::begin() {
 
 void App::loop() {
   // boucle des services
+  updateLocalUi();
   _networkManager.loop();
   if (_apFallbackArmed && !WiFi.isConnected()) {
     if ((int32_t)(millis() - _apFallbackAtMs) >= 0) {
@@ -68,3 +83,128 @@ void App::initPortal() {
 void App::initOta() {
   _ota.begin(_networkManager.hostname().c_str());
 }
+
+void App::initLocalUi() {
+  pinMode(0, INPUT_PULLUP); // BOOT button (Heltec V3/V4 families)
+
+  if (Heltec.display == nullptr) {
+    return;
+  }
+
+  _uiPage = 0;
+  _uiAwake = false;
+  _uiAwakeUntilMs = 0;
+  _uiNextRefreshMs = 0;
+  _uiDirty = false;
+  sleepLocalUi();
+}
+
+void App::updateLocalUi() {
+  if (Heltec.display == nullptr) {
+    return;
+  }
+
+  const uint32_t now = millis();
+  if ((int32_t)(now - _bootBtnDebounceMs) < 0) {
+    // Debounce active, continue with periodic refresh.
+  } else {
+    const bool pressed = (digitalRead(0) == LOW);
+    if (pressed != _bootBtnLastPressed) {
+      _bootBtnLastPressed = pressed;
+      _bootBtnDebounceMs = now + 50;
+
+      if (pressed) {
+        if (!_uiAwake) {
+          _uiAwake = true;
+          _uiPage = 0; // Page 1: connectivite
+          Heltec.display->displayOn();
+        } else {
+          _uiPage = (_uiPage + 1) % 3;
+        }
+
+        _uiAwakeUntilMs = now + 15000;
+        _uiDirty = true;
+      }
+    }
+  }
+
+  if (!_uiAwake) {
+    return;
+  }
+
+  if ((int32_t)(now - _uiAwakeUntilMs) >= 0) {
+    sleepLocalUi();
+    return;
+  }
+
+  if (_uiDirty || (int32_t)(now - _uiNextRefreshMs) >= 0) {
+    renderLocalUi();
+    _uiDirty = false;
+    _uiNextRefreshMs = now + 1000;
+  }
+}
+
+void App::renderLocalUi() {
+  if (Heltec.display == nullptr) {
+    return;
+  }
+
+  String l0;
+  String l1;
+  String l2;
+  String l3;
+  String l4;
+  String l5;
+
+  if (_uiPage == 0) {
+    l0 = "Page 1/3 Connectivite";
+    l1 = String("WiFi: ") + (WiFi.isConnected() ? "OK" : "OFF");
+    l2 = String("MQTT: ") + (_mqtt.connected() ? "OK" : "OFF");
+    l3 = String("IP: ") + (WiFi.isConnected() ? WiFi.localIP().toString() : "-");
+    l4 = String("RSSI: ") + (WiFi.isConnected() ? String(WiFi.RSSI()) + " dBm" : "-");
+    l5 = String("SSID: ") + (WiFi.isConnected() ? WiFi.SSID() : "-");
+  } else if (_uiPage == 1) {
+    const auto& c = _frisquetManager.chaudiere();
+    l0 = "Page 2/3 Chaudiere";
+    l1 = String("T CDC: ") + fmtFloat(c.getTemperatureCDC(), 1, "C");
+    l2 = String("T ECS: ") + fmtFloat(c.getTemperatureECS(), 1, "C");
+    l3 = String("T Ext: ") + fmtFloat(c.getTemperatureExterieure(), 1, "C");
+    l4 = String("Press: ") + fmtFloat(c.getPression(), 1, " bar");
+    l5 = String("Mode ECS: ") + c.getNomModeECS();
+  } else {
+    auto& z1 = _frisquetManager.zone1();
+    const float sondeEnvoyee = _cfg.useSondeExterieure()
+      ? _frisquetManager.sondeExterieure().getTemperatureExterieure()
+      : NAN;
+
+    l0 = "Page 3/3 Zone";
+    l1 = String("Amb Z1: ") + (_cfg.useZone1() ? fmtFloat(z1.getTemperatureAmbiante(), 1, "C") : "-");
+    l2 = String("Cons Z1: ") + (_cfg.useZone1() ? fmtFloat(z1.getTemperatureConsigne(), 1, "C") : "-");
+    l3 = String("Dep Z1: ") + (_cfg.useZone1() ? fmtFloat(z1.getTemperatureDepart(), 1, "C") : "-");
+    l4 = String("Boost Z1: ") + (_cfg.useZone1() ? (z1.boostActif() ? "ON" : "OFF") : "-");
+    l5 = String("Sonde->Chaud: ") + fmtFloat(sondeEnvoyee, 1, "C");
+  }
+
+  Heltec.display->clear();
+  Heltec.display->drawString(0, 0, l0);
+  Heltec.display->drawString(0, 10, l1);
+  Heltec.display->drawString(0, 20, l2);
+  Heltec.display->drawString(0, 30, l3);
+  Heltec.display->drawString(0, 40, l4);
+  Heltec.display->drawString(0, 50, l5);
+  Heltec.display->display();
+}
+
+void App::sleepLocalUi() {
+  _uiAwake = false;
+  _uiAwakeUntilMs = 0;
+  _uiDirty = false;
+
+  if (Heltec.display == nullptr) {
+    return;
+  }
+
+  Heltec.display->clear();
+  Heltec.display->display();
+  Heltec.display->displayOff();
+}
diff --git a/src/App.h b/src/App.h
index 7bd7dad..0d57dc8 100644
--- a/src/App.h
+++ b/src/App.h
@@ -46,4 +46,16 @@ class App {
   void initMqtt();
   void initPortal();
   void initOta();
+  void initLocalUi();
+  void updateLocalUi();
+  void renderLocalUi();
+  void sleepLocalUi();
+
+  bool _bootBtnLastPressed = false;
+  uint32_t _bootBtnDebounceMs = 0;
+  uint8_t _uiPage = 0;
+  bool _uiAwake = false;
+  uint32_t _uiAwakeUntilMs = 0;
+  uint32_t _uiNextRefreshMs = 0;
+  bool _uiDirty = true;
 };
diff --git a/src/FrisquetManager.h b/src/FrisquetManager.h
index f09982f..edee61c 100644
--- a/src/FrisquetManager.h
+++ b/src/FrisquetManager.h
@@ -27,6 +27,9 @@ class FrisquetManager {
   Connect& connect() { return _connect; }
   Chaudiere& chaudiere() { return _chaudiere; }
   SondeExterieure& sondeExterieure() { return _sondeExterieure; }
+  Zone& zone1() { return _zone1; }
+  Zone& zone2() { return _zone2; }
+  Zone& zone3() { return _zone3; }
   Satellite& satelliteZ1() { return _satelliteZ1; }
   Satellite& satelliteZ2() { return _satelliteZ2; }
   Satellite& satelliteZ3() { return _satelliteZ3; }