Rename the toplevel include directory to shared. Add it to the project workspace. Include led_driver.h from main.c

right/build/kds/.cproject

@@ -223,7 +223,7 @@
 									<listOptionValue builtIn="false" value="../../../../lib/KSDK_2.0_FRDM-K22F/CMSIS/Include"/>
 									<listOptionValue builtIn="false" value="../../../../lib/KSDK_2.0_FRDM-K22F/devices/MK22F51212/drivers"/>
 									<listOptionValue builtIn="false" value="../../../../lib/KSDK_2.0_FRDM-K22F/devices/MK22F51212"/>
-									<listOptionValue builtIn="false" value="../../../../include"/>
+									<listOptionValue builtIn="false" value="../../../../shared"/>
 								</option>
 								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.std.997197032" name="Language standard" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.std" useByScannerDiscovery="true" value="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.std.gnu99" valueType="enumerated"/>
 								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs.9752018572" name="Defined symbols (-D)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.defs" useByScannerDiscovery="false" valueType="definedSymbols">

right/build/kds/.project

@@ -40,6 +40,11 @@
 			<type>2</type>
 			<locationURI>virtual:/virtual</locationURI>
 		</link>
+		<link>
+			<name>shared</name>
+			<type>2</type>
+			<locationURI>PARENT-3-PROJECT_LOC/shared</locationURI>
+		</link>
 		<link>
 			<name>src</name>
 			<type>2</type>

right/src/main.c

@@ -3,9 +3,10 @@
 #include "include/board/board.h"
 #include "include/board/pin_mux.h"
 #include "usb_composite_device.h"
-#include "i2c.h"
 #include "fsl_common.h"
 #include "fsl_port.h"
+#include "i2c.h"
+#include "led_driver.h"
 
 void main() {
     BOARD_InitPins();