code with bug

[0x00-pl]

Fixes #\<GitHub-issue-number>.

Make sure all boxes are checked (add x inside the brackets) when you submit your contribution, remove this sentence before doing so.

• [x] I have thoroughly tested my contribution.
• [x] The code I submitted has no copyright issues.

\<Description of and rational behind this PR>

[vowstar]

Please push to https://github.com/kendryte/kendryte-standalone-sdk/tree/v0.5.0rc