Add BLE characteristics for BMS MOS states

Introduces BLE characteristics for charge and discharge MOS states in the BMS. Updates telemetry and notification logic to support these new characteristics, allowing external devices to read MOS status via BLE.

Author: zjwhitehead

src/sp140/extra-data.ino

@@ -109,6 +109,8 @@ Preferences preferences;
 #define BMS_LOW_TEMP_UUID           "26CD6E8A-175D-4C8E-B487-DEFF0B034F2A"
 #define BMS_FAILURE_LEVEL_UUID      "396C768B-F348-44CC-9D46-92388F25A557"
 #define BMS_VOLTAGE_DIFF_UUID       "1C45825B-7C81-430B-8D5F-B644FFFC71BB"
+#define BMS_CHARGE_MOS_UUID         "8BADF137-FFF5-4FBC-9DD7-DFCEAFB0EDF9"
+#define BMS_DISCHARGE_MOS_UUID      "D044DEDA-BE72-4B84-A61F-49861501BE9B"
 #define BMS_CELL_VOLTAGES_UUID      "4337e58b-8462-49b2-b061-c3bf379ef4af"
 
 // ESC Characteristic UUIDs
@@ -134,6 +136,8 @@ static BLECharacteristic* pBMSLowTemp = nullptr;
 static BLECharacteristic* pBMSFailureLevel = nullptr;
 static BLECharacteristic* pBMSVoltageDiff = nullptr;
 static BLECharacteristic* pBMSCellVoltages = nullptr;
+static BLECharacteristic* pBMSChargeMos = nullptr;
+static BLECharacteristic* pBMSDischargeMos = nullptr;
 
 void updateThrottleBLE(int value) {
   // Handle disconnecting
@@ -188,6 +192,14 @@ void updateBMSTelemetry(const STR_BMS_TELEMETRY_140& telemetry) {
   if (pBMSLowTemp) pBMSLowTemp->setValue(lowTemp);
   if (pBMSFailureLevel) pBMSFailureLevel->setValue((uint8_t*)&telemetry.battery_failure_level, sizeof(uint8_t));
   if (pBMSVoltageDiff) pBMSVoltageDiff->setValue(voltageDiff);
+  if (pBMSChargeMos) {
+    uint8_t chargeMos = telemetry.is_charge_mos ? 1 : 0;
+    pBMSChargeMos->setValue(&chargeMos, sizeof(chargeMos));
+  }
+  if (pBMSDischargeMos) {
+    uint8_t dischargeMos = telemetry.is_discharge_mos ? 1 : 0;
+    pBMSDischargeMos->setValue(&dischargeMos, sizeof(dischargeMos));
+  }
 
   // Update cell voltages characteristic
   if (pBMSCellVoltages != nullptr) {
@@ -220,6 +232,8 @@ void updateBMSTelemetry(const STR_BMS_TELEMETRY_140& telemetry) {
     if (pBMSLowTemp) pBMSLowTemp->notify();
     if (pBMSFailureLevel) pBMSFailureLevel->notify();
     if (pBMSVoltageDiff) pBMSVoltageDiff->notify();
+    if (pBMSChargeMos) pBMSChargeMos->notify();
+    if (pBMSDischargeMos) pBMSDischargeMos->notify();
   }
 }
 
@@ -542,6 +556,16 @@ void setupBLE() {
       BLECharacteristic::PROPERTY_READ // Only READ property for debugging
   );
 
+  pBMSChargeMos = pBMSService->createCharacteristic(
+      BLEUUID(BMS_CHARGE_MOS_UUID),
+      BLECharacteristic::PROPERTY_READ
+  );
+
+  pBMSDischargeMos = pBMSService->createCharacteristic(
+      BLEUUID(BMS_DISCHARGE_MOS_UUID),
+      BLECharacteristic::PROPERTY_READ
+  );
+
   // Set initial value for pBMSCellVoltages (array of zeros)
   uint16_t initial_cell_values[BMS_CELLS_NUM] = {0};
   pBMSCellVoltages->setValue((uint8_t*)initial_cell_values, BMS_CELLS_NUM * sizeof(uint16_t));