feat(ui-new): a bolt beside the battery while USB power is connected

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

examples/companion_radio/ui-new/UITask.cpp

@@ -766,7 +766,7 @@ class HomeScreen : public UIScreen {
     // icon won't fit above the reserved area, every lower-priority icon after
     // it is dropped too (the list is ordered high→low).
     //
-    // Priority: BT > GPS fix > alarm > mute > auto-advert > trail > live-share >
+    // Priority: power > BT > GPS fix > alarm > mute > auto-advert > trail > live-share >
     // repeater. Battery (drawn above) is always rightmost. The background modes
     // (advert / trail / live-share / repeater) stay outside any BT gate — they
     // keep running with Bluetooth off, so their cue must not vanish with it.
@@ -782,6 +782,7 @@ class HomeScreen : public UIScreen {
     const bool gps_fix = gps_on && loc->isValid();
     struct Sicon { bool active; const MiniIcon* icon; };
     const Sicon icons[] = {
+      { board.isExternalPowered(),                                 &ICON_CHARGE },   // USB power: next to the battery
       { _task->isSerialEnabled() && _task->isBLEConnected(),       &ICON_BLUETOOTH },
       { gps_on,                                                    gps_fix ? &ICON_GPS : &ICON_GPS_SEARCH },
       { _node_prefs && _node_prefs->alarm_on,                      &ICON_ALARM },

examples/companion_radio/ui-new/icons.h

@@ -488,6 +488,16 @@ MINI_ICON(ICON_ALARM, 9,   // bell — an alarm is armed
   packRow("#########"),
   packRow("........."),
   packRow("...###..."));
+MINI_ICON(ICON_CHARGE, 9,   // lightning bolt -- on external power
+  packRow("......##."),
+  packRow(".....##.."),
+  packRow("....##..."),
+  packRow("...#####."),
+  packRow(".#####..."),
+  packRow("...##...."),
+  packRow("..##....."),
+  packRow(".##......"),
+  packRow(".#......."));
 MINI_ICON(ICON_TRAIL, 7,   // map pin (GPS trail logging)
   packRow("..###.."),
   packRow(".#####."),
@@ -572,6 +582,14 @@ MINI_ICON(ICON_ALARM, 7,   // bell — an alarm is armed
   packRow(".#####."),
   packRow("#######"),
   packRow("...#..."));
+MINI_ICON(ICON_CHARGE, 7,   // lightning bolt -- on external power
+  packRow("....##."),
+  packRow("...##.."),
+  packRow("..##..."),
+  packRow(".#####."),
+  packRow("...##.."),
+  packRow("..##..."),
+  packRow("..#...."));
 MINI_ICON(ICON_TRAIL, 7,   // map pin (GPS trail logging)
   packRow("..###.."),
   packRow(".#####."),
@@ -644,6 +662,13 @@ MINI_ICON(ICON_ALARM, 5,   // bell — an alarm is armed
   packRow(".###."),
   packRow("#####"),
   packRow("..#.."));
+MINI_ICON(ICON_CHARGE, 5,   // lightning bolt -- on external power
+  packRow("...#."),
+  packRow("..##."),
+  packRow(".####"),
+  packRow("..##."),
+  packRow(".##.."),
+  packRow(".#..."));
 
 MINI_ICON(ICON_TRAIL, 6,   // map pin / location marker (GPS trail logging)
   packRow(".####."),

variants/sim/SimMainBoard.h

@@ -16,9 +16,14 @@ class SimMainBoard : public mesh::MainBoard {
   // plumbed through, same reasoning as SimLocationProvider.h's singleton.
   static uint16_t& battMilliVoltsRef() { static uint16_t mv = 4000; return mv; }
 
+  static bool& externalPowerRef() { static bool on = false; return on; }
+
 public:
   void begin() { }
 
+  bool isExternalPowered() override { return externalPowerRef(); }
+  static void setExternalPower(bool on) { externalPowerRef() = on; }
+
   uint16_t getBattMilliVolts() override { return battMilliVoltsRef(); }
   static void setBattMilliVolts(uint16_t mv) { battMilliVoltsRef() = mv; }
   const char* getManufacturerName() const override { return "MeshCore Sim (native)"; }
@@ -43,4 +48,7 @@ public:
 extern "C" inline EMSCRIPTEN_KEEPALIVE void sim_battery_set_mv(int mv) {
   SimMainBoard::setBattMilliVolts((uint16_t)mv);
 }
+extern "C" inline EMSCRIPTEN_KEEPALIVE void sim_external_power_set(int on) {
+  SimMainBoard::setExternalPower(on != 0);
+}
 #endif