cmake: add nuttx force-upload target (#9717)

If the PX4FMUv2 board does not have the v5 uploader, it's not possible
to check the silicon revision to make sure it's safe to upload the
firmware which is more than 1 MB. However, if the user is sure the
silicon revision is not affected by this errata, he can upload the
firmware using px4_uploader.py with --force argument. This commit adds
`force-upload` make target to do it more convenient way.

Signed-off-by: Andrei Korigodski <akorigod@gmail.com>

Tools/px_uploader.py

@@ -555,7 +555,8 @@ class uploader(object):
                                    "high that it is not safe! If unsure, use px4fmu-v2_default.\n"
                                    "\n"
                                    "If you know you that the board does not have the silicon errata, use\n"
-                                   "this script with --force, or update the bootloader.\n")
+                                   "this script with --force, or update the bootloader. If you are invoking\n"
+                                   "upload using make, you can use force-upload target to force the upload.\n")
 
         self.__erase("Erase  ")
         self.__program("Program", fw)

platforms/nuttx/CMakeLists.txt

@@ -189,6 +189,14 @@ if (TARGET parameters_xml AND TARGET airframes_xml)
 			VERBATIM
 			USES_TERMINAL
 			)
+		add_custom_target(force-upload
+			COMMAND ${PYTHON_EXECUTABLE}
+				${PX4_SOURCE_DIR}/Tools/px_uploader.py --force --port ${serial_ports} ${fw_file}
+			DEPENDS ${fw_file}
+			COMMENT "uploading px4 with --force"
+			VERBATIM
+			USES_TERMINAL
+			)
 	endif()
 endif()