diff --git a/boards/nxp/ucans32k146/src/CMakeLists.txt b/boards/nxp/ucans32k146/src/CMakeLists.txt
index 4a19e54f51..458937f024 100644
--- a/boards/nxp/ucans32k146/src/CMakeLists.txt
+++ b/boards/nxp/ucans32k146/src/CMakeLists.txt
@@ -58,7 +58,7 @@ else()
 		bringup.c
 		buttons.c
 		clockconfig.c
-		# i2c.cpp # TODO
+		i2c.cpp
 		init.c
 		mtd.cpp
 		periphclocks.c
diff --git a/platforms/nuttx/src/px4/nxp/s32k14x/include/px4_arch/i2c_hw_description.h b/platforms/nuttx/src/px4/nxp/s32k14x/include/px4_arch/i2c_hw_description.h
new file mode 100644
index 0000000000..b53476d9bd
--- /dev/null
+++ b/platforms/nuttx/src/px4/nxp/s32k14x/include/px4_arch/i2c_hw_description.h
@@ -0,0 +1,52 @@
+/****************************************************************************
+ *
+ *   Copyright (c) 2021 PX4 Development Team. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name PX4 nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+#pragma once
+
+#include <px4_arch/hw_description.h>
+#include <px4_platform_common/i2c.h>
+
+static inline constexpr px4_i2c_bus_t initI2CBusInternal(int bus)
+{
+	px4_i2c_bus_t ret{};
+	ret.bus = bus;
+	ret.is_external = false;
+	return ret;
+}
+
+static inline constexpr px4_i2c_bus_t initI2CBusExternal(int bus)
+{
+	px4_i2c_bus_t ret{};
+	ret.bus = bus;
+	ret.is_external = true;
+	return ret;
+}
diff --git a/platforms/nuttx/src/px4/nxp/s32k1xx/include/px4_arch/i2c_hw_description.h b/platforms/nuttx/src/px4/nxp/s32k1xx/include/px4_arch/i2c_hw_description.h
new file mode 100644
index 0000000000..b53476d9bd
--- /dev/null
+++ b/platforms/nuttx/src/px4/nxp/s32k1xx/include/px4_arch/i2c_hw_description.h
@@ -0,0 +1,52 @@
+/****************************************************************************
+ *
+ *   Copyright (c) 2021 PX4 Development Team. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name PX4 nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+#pragma once
+
+#include <px4_arch/hw_description.h>
+#include <px4_platform_common/i2c.h>
+
+static inline constexpr px4_i2c_bus_t initI2CBusInternal(int bus)
+{
+	px4_i2c_bus_t ret{};
+	ret.bus = bus;
+	ret.is_external = false;
+	return ret;
+}
+
+static inline constexpr px4_i2c_bus_t initI2CBusExternal(int bus)
+{
+	px4_i2c_bus_t ret{};
+	ret.bus = bus;
+	ret.is_external = true;
+	return ret;
+}