From 87a8b7490866cda9e5c6819eeb357647bdb8d36e Mon Sep 17 00:00:00 2001 From: Milton Eduardo Sosa <31409391+snorkman88@users.noreply.github.com> Date: Wed, 2 Oct 2024 20:46:42 +0200 Subject: Add example to poll encoder and display value on I2C display (#963) Co-authored-by: Milton Eduardo Sosa --- examples/stm32f411_encoder_polling/build.rs | 31 +++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 examples/stm32f411_encoder_polling/build.rs (limited to 'examples/stm32f411_encoder_polling/build.rs') diff --git a/examples/stm32f411_encoder_polling/build.rs b/examples/stm32f411_encoder_polling/build.rs new file mode 100644 index 0000000..d534cc3 --- /dev/null +++ b/examples/stm32f411_encoder_polling/build.rs @@ -0,0 +1,31 @@ +//! This build script copies the `memory.x` file from the crate root into +//! a directory where the linker can always find it at build time. +//! For many projects this is optional, as the linker always searches the +//! project root directory -- wherever `Cargo.toml` is. However, if you +//! are using a workspace or have a more complicated build setup, this +//! build script becomes required. Additionally, by requesting that +//! Cargo re-run the build script whenever `memory.x` is changed, +//! updating `memory.x` ensures a rebuild of the application with the +//! new memory settings. + +use std::env; +use std::fs::File; +use std::io::Write; +use std::path::PathBuf; + +fn main() { + // Put `memory.x` in our output directory and ensure it's + // on the linker search path. + let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap()); + File::create(out.join("memory.x")) + .unwrap() + .write_all(include_bytes!("memory.x")) + .unwrap(); + println!("cargo:rustc-link-search={}", out.display()); + + // By default, Cargo will re-run a build script whenever + // any file in the project changes. By specifying `memory.x` + // here, we ensure the build script is only re-run when + // `memory.x` is changed. + println!("cargo:rerun-if-changed=memory.x"); +} -- cgit v1.2.3