added compiledb script

Author: d-mironov

compiledb.py

@@ -0,0 +1,8 @@
+import os
+Import("env")
+
+# include toolchain paths
+env.Replace(COMPILATIONDB_INCLUDE_TOOLCHAIN=True)
+
+# override compilation DB path
+env.Replace(COMPILATIONDB_PATH=os.path.join("$BUILD_DIR", "compile_commands.json"))

platformio.ini

@@ -17,3 +17,5 @@ build_flags = -Wl,--undefined,_printf_float
 
 upload_protocol = stlink
 debug_tool = stlink
+
+extra_scripts = compiledb.py