rt-thread.git/bsp/at32/at32f421-start/README.md, branch serialX-dev Unnamed repository; edit this file 'description' to name the repository. http://cgit.235523.xyz/rt-thread.git/atom/bsp/at32/at32f421-start/README.md?h=serialX-dev 2023-02-01T03:30:56Z add support f421/f425 2023-02-01T03:30:56Z sheltonyu sheltonyu@163.com 2023-01-30T01:44:30Z urn:sha1:c8106bc19b420f6969341f43c5fe8dc880454156