Added compatibility with other Arduino IMU libraries

Author: Rocketct

src/ArduinoIMU.h

@@ -0,0 +1,29 @@
+/*
+  This file is part of the ArduinoIMU library.
+  Copyright (c) 2022 Arduino SA. All rights reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef _ARUDINO_IMU_H_
+#define _ARUDINO_IMU_H_
+
+#include "Arduino.h"
+
+#if defined __has_include
+  #define HAS_INCLUDE_IMU     __has_include("Arduino_LSM6DSOX.h") ||  __has_include("Arduino_LSM6DS3.h") || __has_include("Arduino_LSM9DS1.h")
+#endif
+#endif
+

src/LSM6DS3.cpp

@@ -207,9 +207,10 @@ int LSM6DS3Class::writeRegister(uint8_t address, uint8_t value)
   }
   return 1;
 }
-
-#ifdef ARDUINO_AVR_UNO_WIFI_REV2
-LSM6DS3Class IMU(SPI, SPIIMU_SS, SPIIMU_INT);
-#else
-LSM6DS3Class IMU(Wire, LSM6DS3_ADDRESS);
-#endif
+#ifdef IMU_INCLUDED
+  #ifdef ARDUINO_AVR_UNO_WIFI_REV2
+    LSM6DS3Class IMU(SPI, SPIIMU_SS, SPIIMU_INT);
+  #else
+    LSM6DS3Class IMU(Wire, LSM6DS3_ADDRESS);
+  #endif
+#endif

src/LSM6DS3.h

@@ -20,6 +20,9 @@
 #include <Arduino.h>
 #include <Wire.h>
 #include <SPI.h>
+#include "ArduinoIMU.h"
+
+#define IMU_INCLUDED !HAS_INCLUDE_IMU
 
 #define LSM6DS3_ADDRESS            0x6A
 
@@ -84,5 +87,6 @@ class LSM6DS3Class {
 
     SPISettings _spiSettings;
 };
-
-extern LSM6DS3Class IMU;
+#ifdef IMU_INCLUDED
+  extern LSM6DS3Class IMU;
+#endif