WPE-I: decode the pump's own status words, add panel-verified entities

The WPE-I publishes its status in two words of its own (verified by a
controlled standby experiment with the panel videoed in each state):

- WAERMEPUMPEN_STATUS (0x4eda, Kessel): bit 4 = passive cooling active
  (valve in cooling position; flips with the panel's Passivkühlventil
  checkboxes), two of bits {2, 13} = Kühlbetrieb mode / Netzversorgung
  Inverter. Reads 0x8000 in Bereitschaft.
- Anlagen-Status (BETRIEBS_STATUS 0x4ecd), broadcast towards the room
  unit with HK2's sender id: bit 2 = Heizkreispumpe 2 (word went 4->0->4
  in sync with the standby flip; panel Status Anlage confirmed).

Only panel-verified bits become binaries; both raw words are exposed as
diagnostic sensors so the remaining bits can be identified from recorded
history when the pump changes state (e.g. season change). The Manager
BETRIEBS_STATUS word — the WPL decode source — always reads 0 on this
machine.

Also adds, each panel-verified:
- EVU_SPERRE_AKTIV (0x0074, broadcast flag; panel Inbetriebnahme shows
  EVU SPERRE EIN)
- REGELABWEICHUNG (0x033d, -1.7..-2.1 K matching the Analyse menu)
- WAERMEERTRAG_2WE_HEIZ_SUMME_MWH (0x0928/0x0929 = 36 kWh, matching the
  panel's NHZ HEIZEN SUMME 0.036 MWh)

Author: adrai

components/wp_core/property.h

@@ -361,6 +361,14 @@ struct Property : public oe32trta::detail::Property {
     // WPL13 status word (observed raw 280/285 = 28.0/28.5 l/min while idle
     // in passive cooling, matching VOLUMENSTROM 0x4f47 = 27.7 l/min)
     PROPERTY(WP_WASSERVOLUMENSTROM, 0x02e2, Type::et_dec_val);
+    // the WPE-I's Wärmepumpen-Status word (broadcast by Kessel; 0x8000 while
+    // in standby). Panel-verified bits: 4 = passive cooling active; two of
+    // {2, 13} = Kühlbetrieb mode / Netzversorgung Inverter.
+    PROPERTY(WAERMEPUMPEN_STATUS, 0x4eda);
+    PROPERTY(EVU_SPERRE_AKTIV, 0x0074);
+    PROPERTY(REGELABWEICHUNG, 0x033d, Type::et_dec_val);
+    PROPERTY(WAERMEERTRAG_2WE_HEIZ_SUM_KWH, 0x0928);
+    PROPERTY(WAERMEERTRAG_2WE_HEIZ_SUM_MWH, 0x0929, Type::et_double_val);
     // runtime counters; property ids shared with WPL17 (0x4efb..) / WPL17+23 (NHZ)
     PROPERTY(LAUFZEIT_VD_HEIZEN, 0x4efb);
     PROPERTY(LAUFZEIT_NHZ1, 0x0259);

yaml/wpe-i.yaml

@@ -13,6 +13,56 @@ esphome:
   platformio_options:
     build_flags:
       - "-DWPE_I"
+  on_boot:
+    - priority: -50
+      then:
+        - lambda: |-
+            // Wärmepumpen-Status word 0x4eda: only panel-verified bits are decoded.
+            // The raw word is exposed as a sensor so the remaining bits can be
+            // identified from recorded history when the pump changes state.
+            CallbackHandler::instance().addCallback(std::make_pair(CanNode::Kessel,Property::kWAERMEPUMPEN_STATUS),[](const SimpleVariant& value){
+              const auto word{static_cast<std::uint16_t>(value)};
+              id(WP_STATUS_RAW).publish_state(word);
+              if (word != 0x8000U) {  // 0x8000 = standby (Bereitschaft)
+                const std::bitset<16U> status_bits{word};
+                id(PASSIVKUEHLUNG_AKTIV).publish_state(status_bits.test(4U));
+              }
+            });
+            // Anlagen-Status word 0x4ecd is broadcast by the pump towards the
+            // room unit and arrives carrying HK2's sender id.
+            CallbackHandler::instance().addCallback(std::make_pair(CanNode::HK2,Property::kBETRIEBS_STATUS),[](const SimpleVariant& value){
+              const auto word{static_cast<std::uint16_t>(value)};
+              const std::bitset<16U> status_bits{word};
+              id(ANLAGE_STATUS_RAW).publish_state(word);
+              id(HEIZKREISPUMPE_2).publish_state(status_bits.test(2U));
+            });
+            // EVU-Sperre-aktiv flag 0x0074, broadcast periodically (Manager id)
+            CallbackHandler::instance().addCallback(std::make_pair(CanNode::Manager,Property::kEVU_SPERRE_AKTIV),[](const SimpleVariant& value){
+              id(EVU_SPERRE_AKTIV).publish_state(static_cast<std::uint16_t>(value) == 1U);
+            });
+    - priority: -100
+      then:
+        - lambda: |-
+            queueRequest(CanNode::Kessel, Property::kWAERMEPUMPEN_STATUS);
+
+#########################################
+#                                       #
+#   Status raw words (diagnostic)       #
+#                                       #
+#########################################
+sensor:
+  - platform: template
+    name: WP_STATUS_RAW
+    id: WP_STATUS_RAW
+    icon: "mdi:numeric"
+    accuracy_decimals: 0
+    update_interval: never
+  - platform: template
+    name: ANLAGE_STATUS_RAW
+    id: ANLAGE_STATUS_RAW
+    icon: "mdi:numeric"
+    accuracy_decimals: 0
+    update_interval: never
 
 #########################################
 #                                       #
@@ -42,3 +92,12 @@ packages:
   LAUFZEIT_NHZ1:                        !include { file: templates/wp_generic.yaml, vars: { property: "LAUFZEIT_NHZ1", unit: "h", target: "Heizmodul" }}
   LAUFZEIT_NHZ2:                        !include { file: templates/wp_generic.yaml, vars: { property: "LAUFZEIT_NHZ2", unit: "h", target: "Heizmodul" }}
   LAUFZEIT_NHZ1_2:                      !include { file: templates/wp_generic.yaml, vars: { property: "LAUFZEIT_NHZ1_2", unit: "h", target: "Heizmodul" }}
+
+  # status binaries decoded from the WPE-I's own status words (panel-verified bits only)
+  PASSIVKUEHLUNG_AKTIV:                 !include { file: templates/wp_binary.yaml, vars: { name: "PASSIVKUEHLUNG_AKTIV" }}
+  HEIZKREISPUMPE_2:                     !include { file: templates/wp_binary.yaml, vars: { name: "HEIZKREISPUMPE_2" }}
+  EVU_SPERRE_AKTIV:                     !include { file: templates/wp_binary.yaml, vars: { name: "EVU_SPERRE_AKTIV" }}
+
+  # further panel-verified values
+  REGELABWEICHUNG:                      !include { file: templates/wp_generic.yaml, vars: { property: "REGELABWEICHUNG", unit: "K", accuracy_decimals: "1", target: "Manager" }}
+  WAERMEERTRAG_2WE_HEIZ_SUMME_MWH:      !include { file: templates/wp_generic_combined.yaml, vars: { sensor_name: "WAERMEERTRAG_2WE_HEIZ_SUMME_MWH" , scaled_property: "WAERMEERTRAG_2WE_HEIZ_SUM_KWH" , property: "WAERMEERTRAG_2WE_HEIZ_SUM_MWH" , unit: "MWh", accuracy_decimals: "3", icon: "mdi:fire" , target: "Heizmodul", state_class: "total_increasing" }}