Add the (incomplete and non-buildable) esp32s2-hal and esp32s3-hal packages

Cargo.toml

@@ -3,4 +3,6 @@ members = [
     "esp-hal-common",
     "esp32-hal",
     "esp32c3-hal",
+    "esp32s2-hal",
+    "esp32s3-hal",
 ]

esp32s2-hal/.cargo/config.toml

@@ -0,0 +1,12 @@
+[target.xtensa-esp32s2-none-elf]
+runner = "xtensa-esp32s2-elf-gdb -q -x xtensa.gdb"
+
+[build]
+rustflags = [
+  "-C", "link-arg=-nostartfiles",
+  "-C", "link-arg=-Wl,-Tlink.x",
+]
+target = "xtensa-esp32s2-none-elf"
+
+[unstable]
+build-std = ["core"]

esp32s2-hal/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "esp32s2-hal"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+bare-metal = "1.0"
+embedded-hal = { version = "0.2", features = ["unproven"] }
+nb = "1.0"
+void = { version = "1.0", default-features = false }
+xtensa-lx = { version = "0.4", features = ["lx6"] } # FIXME
+
+[dependencies.esp32s2]
+path = "../../esp-pacs/esp32s2"
+
+[dependencies.esp-hal-common]
+path = "../esp-hal-common"
+features = ["32s2"]
+
+[dependencies.xtensa-lx-rt]
+git = "https://github.com/esp-rs/xtensa-lx-rt/"
+branch = "unify-xtensa-asm"
+features = ["lx6"]
+optional = true
+
+[dev-dependencies]
+panic-halt = "0.2"
+
+[features]
+default = ["rt"]
+rt = ["esp32s2/rt", "xtensa-lx-rt"]

esp32s2-hal/README.md

@@ -0,0 +1 @@
+# esp32s2-hal

esp32s2-hal/build.rs

@@ -0,0 +1,21 @@
+use std::{env, fs::File, io::Write, path::PathBuf};
+
+fn main() {
+    // Put the linker script somewhere the linker can find it
+    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
+    File::create(out.join("memory.x"))
+        .unwrap()
+        .write_all(include_bytes!("memory.x"))
+        .unwrap();
+
+    File::create(out.join("alias.x"))
+        .unwrap()
+        .write_all(include_bytes!("rom.x"))
+        .unwrap();
+
+    println!("cargo:rustc-link-search={}", out.display());
+
+    // Only re-run the build script when memory.x is changed,
+    // instead of when any part of the source code changes.
+    println!("cargo:rerun-if-changed=memory.x");
+}

esp32s2-hal/rust-toolchain.toml

@@ -0,0 +1,4 @@
+[toolchain]
+channel = "esp"
+components = ["rustfmt", "rustc-dev"]
+targets = ["xtensa-esp32s2-none-elf"]

esp32s2-hal/src/lib.rs

@@ -0,0 +1,8 @@
+#![no_std]
+
+pub use embedded_hal as ehal;
+pub use esp32s2 as pac;
+pub use esp_hal_common::{prelude, Serial, Timer};
+
+#[no_mangle]
+extern "C" fn DefaultHandler(_level: u32, _interrupt: pac::Interrupt) {}

esp32s3-hal/.cargo/config.toml

@@ -0,0 +1,12 @@
+[target.xtensa-esp32s3-none-elf]
+runner = "xtensa-esp32s3-elf-gdb -q -x xtensa.gdb"
+
+[build]
+rustflags = [
+  "-C", "link-arg=-nostartfiles",
+  "-C", "link-arg=-Wl,-Tlink.x",
+]
+target = "xtensa-esp32s3-none-elf"
+
+[unstable]
+build-std = ["core"]

esp32s3-hal/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "esp32s3-hal"
+version = "0.1.0"
+edition = "2018"
+
+[dependencies]
+bare-metal = "1.0"
+embedded-hal = { version = "0.2", features = ["unproven"] }
+nb = "1.0"
+void = { version = "1.0", default-features = false }
+xtensa-lx = { version = "0.4", features = ["lx6"] } # FIXME
+
+[dependencies.esp32s3]
+path = "../../esp-pacs/esp32s3"
+
+[dependencies.esp-hal-common]
+path = "../esp-hal-common"
+features = ["32s3"]
+
+[dependencies.xtensa-lx-rt]
+git = "https://github.com/esp-rs/xtensa-lx-rt/"
+branch = "unify-xtensa-asm"
+features = ["lx6"]
+optional = true
+
+[dev-dependencies]
+panic-halt = "0.2"
+
+[features]
+default = ["rt"]
+rt = ["esp32s3/rt", "xtensa-lx-rt"]

esp32s3-hal/README.md

@@ -0,0 +1 @@
+# esp32s3-hal

esp32s3-hal/build.rs

@@ -0,0 +1,16 @@
+use std::{env, fs::File, io::Write, path::PathBuf};
+
+fn main() {
+    // Put the linker script somewhere the linker can find it
+    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());
+
+    // Only re-run the build script when memory.x is changed,
+    // instead of when any part of the source code changes.
+    println!("cargo:rerun-if-changed=memory.x");
+}

esp32s3-hal/rust-toolchain.toml

@@ -0,0 +1,4 @@
+[toolchain]
+channel = "esp"
+components = ["rustfmt", "rustc-dev"]
+targets = ["xtensa-esp32s3-none-elf"]

esp32s3-hal/src/lib.rs

@@ -0,0 +1,5 @@
+#![no_std]
+
+pub use embedded_hal as ehal;
+pub use esp32s3 as pac;
+pub use esp_hal_common::{prelude, Serial, Timer};