add msc file explorer example

- add lib/fatfs version 15
- add lib/embedded-cli

examples/host/msc_file_explorer/CMakeLists.txt

@@ -0,0 +1,43 @@
+cmake_minimum_required(VERSION 3.5)
+
+include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake)
+
+# 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} ${CMAKE_CURRENT_LIST_DIR})
+
+add_executable(${PROJECT})
+
+# Example source
+target_sources(${PROJECT} PUBLIC
+        ${CMAKE_CURRENT_SOURCE_DIR}/src/main.c
+        ${CMAKE_CURRENT_SOURCE_DIR}/src/msc_app.c
+        )
+
+# Example include
+target_include_directories(${PROJECT} PUBLIC
+        ${CMAKE_CURRENT_SOURCE_DIR}/src
+        )
+
+# Configure compilation flags and libraries for the example... see the corresponding function
+# in hw/bsp/FAMILY/family.cmake for details.
+family_configure_host_example(${PROJECT})
+
+# For rp2040, un-comment to enable pico-pio-usb
+family_add_pico_pio_usb(${PROJECT})
+
+# due to warnings from Pico-PIO-USB
+target_compile_options(${PROJECT} PUBLIC
+        -Wno-error=shadow
+        -Wno-error=cast-align
+        -Wno-error=cast-qual
+        -Wno-error=redundant-decls
+        -Wno-error=sign-conversion
+        -Wno-error=conversion
+        -Wno-error=sign-compare
+        -Wno-error=unused-function
+        )