normal commit
Merge branch 'START' of https://github.com/GuoZhiyong/RTT_GPS_STUSB into START

Conflicts:
	bsp/stm32f40x_car/applications/vdr.c
Merge branch 'START' of https://github.com/GuoZhiyong/RTT_GPS_STUSB into START

Conflicts:
	bsp/stm32f40x_car/applications/vdr.c
初步规划