添加rtt的驱动框架，实现了一部分接口函数，支持了Kconfig.

kconfig.cmake

@@ -0,0 +1,30 @@
+
+set(PYTHON_EXECUTABLE $ENV{PYTHON_EXECUTABLE})
+
+message(
+  ${PYTHON_EXECUTABLE} "\n"
+  ${CMAKE_SOURCE_DIR}/mkrtos_tool/kconfig/kconfig.py "\n"
+  ${CMAKE_SOURCE_DIR}/Kconfig "\n"
+  ${CMAKE_SOURCE_DIR}/build/auto.conf "\n"
+  ${CMAKE_SOURCE_DIR}/build/autoconf.h "\n"
+  ${CMAKE_SOURCE_DIR}/build/log.txt "\n"
+  ${CMAKE_SOURCE_DIR}/build/.config "\n"
+  )
+execute_process(
+  COMMAND
+  ${PYTHON_EXECUTABLE} 
+  ${CMAKE_SOURCE_DIR}/mkrtos_tool/kconfig/kconfig.py
+  ${CMAKE_SOURCE_DIR}/Kconfig 
+  ${CMAKE_SOURCE_DIR}/build/auto.conf 
+  ${CMAKE_SOURCE_DIR}/build/autoconf.h 
+  ${CMAKE_SOURCE_DIR}/build/log.txt 
+  ${CMAKE_SOURCE_DIR}/build/.config 
+  
+  WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+  # The working directory is set to the app dir such that the user
+  # can use relative paths in CONF_FILE, e.g. CONF_FILE=nrf5.conf
+  RESULT_VARIABLE ret
+  )
+if(NOT "${ret}" STREQUAL "0")
+  message(FATAL_ERROR "command failed with return code: ${ret}")
+endif()