First version of my operation system for stm32 board

Dependencies:   RA8875 VS1053 sd-driver-hs

Revision:
0:86f82f777a7a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.gitignore	Thu Mar 01 06:58:17 2018 +0000
@@ -0,0 +1,4 @@
+.build
+.mbed
+projectfiles
+*.py*