You shared your code, but forgot to tell us you’re using a custom version of a SparkFun library.
Sometimes, a "simple blink sketch" fails because of hidden .ioc configuration files in CubeIDE that define the clock speed or pinouts. in0.rar
Creating an archive like in0.rar is essential because most forums restrict uploading raw binary or script files for security reasons. Common Pitfalls in Project Sharing You shared your code, but forgot to tell
Based on this context, here is a blog post designed for a tech/DIY electronics blog. You shared your code
From .ino to .rar: How to Properly Share and Debug Your Hardware Projects
wix.com/blog/how-to-write-a-blog-post-with-examples">Wix or a built with R blogdown ?