dashboard: highlight battery card on alarms

firmware/esp32-s3-dashboard/dashboard_config.h

@@ -1,6 +1,6 @@
 #pragma once
 
-static const char *DASHBOARD_VERSION = "0.1.41-temp-alerts";
+static const char *DASHBOARD_VERSION = "0.1.42-battery-alarm-card";
 
 // Update these if your Cargo ESP AP credentials are different.
 static const char *CARGO_WIFI_SSID = "OverlandController";

firmware/esp32-s3-dashboard/esp32-s3-dashboard.ino

@@ -14,6 +14,7 @@ using namespace esp_panel::board;
 
 static DashboardStatus status_model;
 
+static lv_obj_t *battery_card_obj = nullptr;
 static lv_obj_t *battery_soc_arc = nullptr;
 static lv_obj_t *battery_charge_pulse_arc = nullptr;
 static lv_obj_t *battery_current_label = nullptr;
@@ -61,6 +62,7 @@ static bool pending_relay_previous_state = false;
 static String last_battery_current_text;
 static String last_battery_estimate_text;
 static String last_battery_soc_text;
+static bool last_battery_card_alert = false;
 static String last_temp_tile_value_text[2];
 static String last_temp_tile_name_text[2];
 static String last_system_status_text;
@@ -627,6 +629,34 @@ static void update_temp_tile_alert_style(int index, bool alert)
     lvgl_port_unlock();
 }
 
+
+static void update_battery_card_alert_style(bool alert)
+{
+    if (battery_card_obj == nullptr) {
+        return;
+    }
+
+    if (last_battery_card_alert == alert) {
+        return;
+    }
+
+    last_battery_card_alert = alert;
+
+    lvgl_port_lock(-1);
+
+    if (alert) {
+        lv_obj_set_style_bg_color(battery_card_obj, lv_color_hex(0x7A271A), 0);
+        lv_obj_set_style_border_color(battery_card_obj, lv_color_hex(0xF97066), 0);
+        lv_obj_set_style_border_width(battery_card_obj, 3, 0);
+    } else {
+        lv_obj_set_style_bg_color(battery_card_obj, lv_color_hex(0x1F2933), 0);
+        lv_obj_set_style_border_color(battery_card_obj, lv_color_hex(0x3A4652), 0);
+        lv_obj_set_style_border_width(battery_card_obj, 2, 0);
+    }
+
+    lvgl_port_unlock();
+}
+
 static void update_overview_widgets()
 {
     String current_text = "Idle";
@@ -680,6 +710,21 @@ static void parse_status_json(const String &body)
 
     status_model.api_ok = true;
 
+    bool battery_alarm_active = false;
+
+    if (doc["alarms"].is<JsonObject>()) {
+        JsonObject alarms = doc["alarms"];
+        battery_alarm_active =
+            (alarms["low_soc"] | false) ||
+            (alarms["critical_soc"] | false) ||
+            (alarms["low_voltage"] | false) ||
+            (alarms["high_battery_temp"] | false) ||
+            (alarms["cell_imbalance"] | false) ||
+            (alarms["bms_disconnected"] | false);
+    }
+
+    update_battery_card_alert_style(battery_alarm_active);
+
     if (doc["battery"].is<JsonObject>()) {
         JsonObject battery = doc["battery"];
         status_model.bms_connected = battery["connected"] | status_model.bms_connected;
@@ -986,6 +1031,7 @@ static void create_overland_overview_screen()
 
     lv_obj_t *system_card = create_card(screen, "", 960, 48, LV_ALIGN_TOP_MID, 0, 12);
     lv_obj_t *battery_card = create_card(screen, "", 380, 310, LV_ALIGN_TOP_LEFT, 32, 76);
+    battery_card_obj = battery_card;
     lv_obj_t *temp_card = create_card(screen, "", 260, 310, LV_ALIGN_TOP_LEFT, 426, 76);
     lv_obj_t *vehicle_card = create_card(screen, "", 274, 310, LV_ALIGN_TOP_RIGHT, -32, 76);
     lv_obj_t *relay_card = create_card(screen, "", 960, 205, LV_ALIGN_BOTTOM_MID, 0, -8);