AP_SerialManager: add device ID getter

libraries/AP_SerialManager/AP_SerialManager.cpp

@@ -908,6 +908,60 @@ void AP_SerialManager::registered_ports_log()
 
 #endif // AP_SERIALMANAGER_REGISTER_ENABLED
 
+// Return a device id for this port
+uint32_t AP_SerialManager::UARTState::get_device_id() const
+{
+#if AP_SERIALMANAGER_REGISTER_ENABLED
+    if (idx >= AP_SERIALMANAGER_SCR_PORT_1) {
+        // Scripting port
+        return AP_HAL::Device::make_bus_id(
+            AP_HAL::Device::BUS_TYPE_SERIAL,
+            0,
+            idx - AP_SERIALMANAGER_SCR_PORT_1,
+            uint8_t(DeviceType::SCRIPTING)
+        );
+    }
+
+    if (idx >= AP_SERIALMANAGER_CAN_D2_PORT_1) {
+        // CAN D2 port
+        return AP_HAL::Device::make_bus_id(
+            AP_HAL::Device::BUS_TYPE_SERIAL,
+            1,
+            idx - AP_SERIALMANAGER_CAN_D2_PORT_1,
+            uint8_t(DeviceType::CANBUS)
+        );
+    }
+
+    if (idx >= AP_SERIALMANAGER_CAN_D1_PORT_1) {
+        // CAN D1 port
+        return AP_HAL::Device::make_bus_id(
+            AP_HAL::Device::BUS_TYPE_SERIAL,
+            0,
+            idx - AP_SERIALMANAGER_CAN_D1_PORT_1,
+            uint8_t(DeviceType::CANBUS)
+        );
+    }
+
+    if (idx >= AP_SERIALMANAGER_NET_PORT_1) {
+        // Networking port
+        return AP_HAL::Device::make_bus_id(
+            AP_HAL::Device::BUS_TYPE_SERIAL,
+            0,
+            idx - AP_SERIALMANAGER_NET_PORT_1,
+            uint8_t(DeviceType::NETWORKING)
+        );
+    }
+#endif // AP_SERIALMANAGER_REGISTER_ENABLED
+
+    // Standard port
+    return AP_HAL::Device::make_bus_id(
+        AP_HAL::Device::BUS_TYPE_SERIAL,
+        0,
+        idx,
+        uint8_t(DeviceType::UART)
+    );
+}
+
 namespace AP {
 
 AP_SerialManager &serialmanager()

libraries/AP_SerialManager/AP_SerialManager.h

@@ -229,6 +229,18 @@ public:
 #if HAL_LOGGING_ENABLED && HAL_UART_STATS_ENABLED
         AP_HAL::UARTDriver::StatsTracker stats;
 #endif
+
+        // Enum for device type used in get_device_id
+        enum class DeviceType {
+            UNKNOWN,
+            UART,
+            NETWORKING,
+            CANBUS,
+            SCRIPTING,
+        };
+
+        // Return a device id for this port
+        uint32_t get_device_id() const;
     };
 
     // get a state from serial index