Make examples standalone buildable via CMake

examples/device/cdc_msc_freertos/CMakeLists.txt

@@ -1,20 +1,17 @@
 cmake_minimum_required(VERSION 3.5)
 
-# use BOARD-Directory name for project id
-get_filename_component(PROJECT ${CMAKE_CURRENT_SOURCE_DIR} NAME)
-set(PROJECT ${BOARD}-${PROJECT})
+include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake)
 
-# TOP is absolute path to root directory of TinyUSB git repo
-set(TOP "../../..")
-get_filename_component(TOP "${TOP}" REALPATH)
+# gets PROJECT name for the example (e.g. <BOARD>-<DIR_NAME>)
+family_get_project_name(PROJECT ${CMAKE_CURRENT_LIST_DIR})
+
+project(${PROJECT})
+
+# Checks this example is valid for the family and initializes the project
+family_initialize_project(${PROJECT} ${CMAKE_CURRENT_LIST_DIR})
 
 # Check for -DFAMILY=
 if(FAMILY MATCHES "^esp32s[2-3]")
-  cmake_minimum_required(VERSION 3.5)
-
-  include(${TOP}/hw/bsp/${FAMILY}/family.cmake)
-  project(${PROJECT})
-
 else()
   message(FATAL_ERROR "Invalid FAMILY specified: ${FAMILY}")
 endif()