build dds module but not test
Merge pull request #3 from ScottZhangLiwen/bugfix_dds

build dds module but not test
Merge pull request #4 from SuperAFM/master

scan_control_v1
pull requeset
use usart to communicate with other board
the third usart(USART3) is able to transmit information to another
Merge pull request #5 from ScottZhangLiwen/master

update