Put the implicit memory.x behind a memory_x feature on embassy-stm32.

embassy-stm32/Cargo.toml

@@ -42,6 +42,7 @@ defmt-warn = [ ]
 defmt-error = [ ]
 sdmmc-rs = ["embedded-sdmmc"]
 net = ["embassy-net", "vcell"]
+memory_x = ["stm32-metapac/memory_x"]
 
 # Reexport stm32-metapac at `embassy_stm32::pac`.
 # This is unstable because semver-minor (non-breaking) releases of embassy-stm32 may major-bump (breaking) the stm32-metapac version.

examples/stm32f4/Cargo.toml

@@ -19,7 +19,7 @@ defmt-error = []
 [dependencies]
 embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-trace"] }
 embassy-traits = { version = "0.1.0", path = "../../embassy-traits", features = ["defmt"] }
-embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["defmt", "defmt-trace", "stm32f429zi", "unstable-pac"]  }
+embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["defmt", "defmt-trace", "stm32f429zi", "unstable-pac", "memory_x"]  }
 embassy-hal-common = {version = "0.1.0", path = "../../embassy-hal-common" }
 
 defmt = "0.2.0"

examples/stm32h7/Cargo.toml

@@ -19,7 +19,7 @@ defmt-error = []
 [dependencies]
 embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-trace"] }
 embassy-traits = { version = "0.1.0", path = "../../embassy-traits", features = ["defmt"] }
-embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["defmt", "defmt-trace", "stm32h743zi", "net"] }
+embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["defmt", "defmt-trace", "stm32h743zi", "net", "memory_x"] }
 embassy-hal-common = {version = "0.1.0", path = "../../embassy-hal-common" }
 embassy-net = { path = "../../embassy-net", default-features = false, features = ["defmt-debug", "defmt", "tcp", "medium-ethernet", "pool-16"] }
 stm32-metapac = { path = "../../stm32-metapac", features = ["stm32h743zi"] }

stm32-metapac-gen/src/assets/build.rs

@@ -17,6 +17,11 @@ fn main() {
         //.write_all(include_bytes!("memory.x"))
         //.unwrap();
 
+    println!("HOWDY");
+
+    #[cfg(feature = "memory_x")]
+    println!("cargo:rustc-link-search=src/chips/{}/memory_x/", _chip_name);
+
     #[cfg(feature = "rt")]
     println!("cargo:rustc-link-search=src/chips/{}", _chip_name);
 

stm32-metapac-gen/src/lib.rs

@@ -773,7 +773,8 @@ fn gen_memory_x(out_dir: &PathBuf, chip: &Chip) {
     write!(memory_x, "    RAM : ORIGIN = 0x{:x}, LENGTH = {}\n", ram_origin, ram_bytes).unwrap();
     write!(memory_x, "}}").unwrap();
 
-    let mut file = File::create(out_dir.join("memory.x")).unwrap();
+    fs::create_dir_all(out_dir.join("memory_x")).unwrap();
+    let mut file = File::create(out_dir.join("memory_x").join("memory.x")).unwrap();
     file.write_all( memory_x.as_bytes() ).unwrap();
 
 }

stm32-metapac/Cargo.toml

@@ -17,6 +17,7 @@ regex = "1.5.4"
 
 [features]
 rt = ["cortex-m-rt/device"]
+memory_x = []
 
 # BEGIN GENERATED FEATURES
 # Generated by gen_features.py. DO NOT EDIT.

stm32-metapac/build.rs

@@ -27,5 +27,13 @@ fn main() {
         out_dir.display(),
         chip_name.to_ascii_lowercase()
     );
+
+    #[cfg(feature = "memory_x")]
+    println!(
+        "cargo:rustc-link-search={}/src/chips/{}/memory_x/",
+        out_dir.display(),
+        chip_name.to_ascii_lowercase()
+    );
+
     println!("cargo:rerun-if-changed=build.rs");
 }