Check out a sample watch face created with this framework: barebones-watchface
Refer to the article...
"Create Your Own PineTime Watch Face in Rust... And Publish on crates.io"
Watch Face Framework for Rust + Mynewt on PineTime Smart Watch
https://lupyuen.github.io/pinetime-rust-mynewt/articles/watchface
Check out a sample watch face created with this framework: barebones-watchface
Refer to the article...
"Create Your Own PineTime Watch Face in Rust... And Publish on crates.io"
Watch Face Framework for Rust + Mynewt on PineTime Smart Watch
https://lupyuen.github.io/pinetime-rust-mynewt/articles/watchface
Apache License 2.0