Support for ESP-IDF build

Cargo.toml

@@ -1,5 +1,5 @@
 [workspace]
-members = ["matter", "matter_macro_derive", "tools/tlv_tool"]
+members = ["matter", "matter_macro_derive"]
 
 exclude = ["examples/*"]
 

README.md

@@ -47,13 +47,31 @@ Building the library:
 $ cargo build
 ```
 
-Building the example:
+Building and running the example (Linux, MacOS X):
 
 ```
-$ RUST_LOG="matter" cargo run --example onoff_light
+$ cargo run --example onoff_light
 ```
 
-With the chip-tool (the current tool for testing Matter) use the Ethernet commissioning mechanism:
+Building the example (Espressif's ESP-IDF):
+* Install all build prerequisites described [here](https://github.com/esp-rs/esp-idf-template#prerequisites)
+* Build with the following command line:
+```
+export MCU=esp32; export CARGO_TARGET_XTENSA_ESP32_ESPIDF_LINKER=ldproxy; export RUSTFLAGS="-C default-linker-libraries"; export WIFI_SSID=ssid;export WIFI_PASS=pass; cargo build --example onoff_light --no-default-features --features std,crypto_rustcrypto --target xtensa-esp32-espidf -Zbuild-std=std,panic_abort
+```
+* If you are building for a different Espressif MCU, change the `MCU` variable, the `xtensa-esp32-espidf` target and the name of the `CARGO_TARGET_<esp-idf-target-uppercase>_LINKER` variable to match your MCU and its Rust target. Available Espressif MCUs and targets are:
+  * esp32 / xtensa-esp32-espidf
+  * esp32s2 / xtensa-esp32s2-espidf
+  * esp32s3 / xtensa-esp32s3-espidf
+  * esp32c3 / riscv32imc-esp-espidf
+  * esp32c5 / riscv32imc-esp-espidf
+  * esp32c6 / risxcv32imac-esp-espidf
+* Put in `WIFI_SSID` / `WIFI_PASS` the SSID & password for your wireless router
+* Flash using the `espflash` utility described in the build prerequsites' link above
+
+## Test
+
+With the `chip-tool` (the current tool for testing Matter) use the Ethernet commissioning mechanism:
 
 ```
 $ chip-tool pairing code 12344321 <Pairing-Code>

examples/onoff_light/src/main.rs

@@ -31,7 +31,6 @@ use matter::data_model::system_model::descriptor;
 use matter::error::Error;
 use matter::interaction_model::core::InteractionModel;
 use matter::mdns::{DefaultMdns, DefaultMdnsRunner};
-use matter::persist;
 use matter::secure_channel::spake2p::VerifierData;
 use matter::transport::network::{Address, IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr};
 use matter::transport::{
@@ -50,7 +49,6 @@ fn main() -> Result<(), Error> {
         .unwrap();
 
     thread.join().unwrap()
-    // run()
 }
 
 #[cfg(not(feature = "std"))]
@@ -105,17 +103,21 @@ fn run() -> Result<(), Error> {
     let psm_path = std::env::temp_dir().join("matter-iot");
     info!("Persisting from/to {}", psm_path.display());
 
-    let psm = persist::FilePsm::new(psm_path)?;
+    #[cfg(all(feature = "std", not(target_os = "espidf")))]
+    let psm = matter::persist::FilePsm::new(psm_path)?;
 
     let mut buf = [0; 4096];
     let buf = &mut buf;
 
-    if let Some(data) = psm.load("acls", buf)? {
-        matter.load_acls(data)?;
-    }
+    #[cfg(all(feature = "std", not(target_os = "espidf")))]
+    {
+        if let Some(data) = psm.load("acls", buf)? {
+            matter.load_acls(data)?;
+        }
 
-    if let Some(data) = psm.load("fabrics", buf)? {
-        matter.load_fabrics(data)?;
+        if let Some(data) = psm.load("fabrics", buf)? {
+            matter.load_fabrics(data)?;
+        }
     }
 
     let mut transport = Transport::new(&matter);
@@ -180,12 +182,15 @@ fn run() -> Result<(), Error> {
                 }
             }
 
-            if let Some(data) = transport.matter().store_fabrics(buf)? {
-                psm.store("fabrics", data)?;
-            }
+            #[cfg(all(feature = "std", not(target_os = "espidf")))]
+            {
+                if let Some(data) = transport.matter().store_fabrics(buf)? {
+                    psm.store("fabrics", data)?;
+                }
 
-            if let Some(data) = transport.matter().store_acls(buf)? {
-                psm.store("acls", data)?;
+                if let Some(data) = transport.matter().store_acls(buf)? {
+                    psm.store("acls", data)?;
+                }
             }
         }
 

matter/Cargo.toml

@@ -16,7 +16,6 @@ path = "src/lib.rs"
 
 [features]
 default = ["os", "crypto_rustcrypto"]
-#default = ["crypto_rustcrypto"]
 os = ["std", "backtrace", "env_logger", "nix", "critical-section/std", "embassy-sync/std", "embassy-time/std"]
 std = ["alloc", "rand", "qrcode", "async-io", "smol", "esp-idf-sys/std"]
 backtrace = []
@@ -51,7 +50,6 @@ domain = { version = "0.7.2", default_features = false, features = ["heapless"]
 # STD-only dependencies
 rand = { version = "0.8.5", optional = true }
 qrcode = { version = "0.12", default-features = false, optional = true } # Print QR code
-astro-dnssd = { version = "0.3", optional = true } # On Linux needs avahi-compat-libdns_sd, i.e. on Ubuntu/Debian do `sudo apt-get install libavahi-compat-libdnssd-dev`
 smol = { version = "1.2", optional = true } # =1.2 for compatibility with ESP IDF
 async-io = { version = "=1.12", optional = true } # =1.2 for compatibility with ESP IDF
 
@@ -72,18 +70,27 @@ crypto-bigint = { version = "0.4", default-features = false, optional = true }
 rand_core = { version = "0.6", default-features = false, optional = true }
 x509-cert = { version = "0.2.0", default-features = false, features = ["pem"], optional = true } # TODO: requires `alloc`
 
+[target.'cfg(target_os = "macos")'.dependencies]
+astro-dnssd = { version = "0.3" }
+
 [target.'cfg(not(target_os = "espidf"))'.dependencies]
 mbedtls = { git = "https://github.com/fortanix/rust-mbedtls", optional = true }
 env_logger = { version = "0.10.0", optional = true }
 nix = { version = "0.26", features = ["net"], optional = true }
 
 [target.'cfg(target_os = "espidf")'.dependencies]
-esp-idf-sys = { version = "0.33", default-features = false, features = ["native"] }
+esp-idf-sys = { version = "0.33", default-features = false, features = ["native", "binstart"] }
+esp-idf-hal = { version = "0.41", features = ["embassy-sync", "critical-section"] }
+esp-idf-svc = { version = "0.46", features = ["embassy-time-driver"] }
+embedded-svc = "0.25"
+
+[build-dependencies]
+embuild = "0.31.2"
 
 [[example]]
 name = "onoff_light"
 path = "../examples/onoff_light/src/main.rs"
 
-[[example]]
-name = "speaker"
-path = "../examples/speaker/src/main.rs"
+# [[example]]
+# name = "speaker"
+# path = "../examples/speaker/src/main.rs"

matter/build.rs

@@ -0,0 +1,11 @@
+use std::env::var;
+
+// Necessary because of this issue: https://github.com/rust-lang/cargo/issues/9641
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    if var("TARGET").unwrap().ends_with("-espidf") {
+        embuild::build::CfgArgs::output_propagated("ESP_IDF")?;
+        embuild::build::LinkArgs::output_propagated("ESP_IDF")?;
+    }
+
+    Ok(())
+}

matter/src/transport/udp.rs

@@ -52,6 +52,8 @@ mod smol_udp {
                 IpAddr::V6(ip_addr) => self.socket.join_multicast_v6(&ip_addr, 0)?,
             }
 
+            info!("Joining multicast on {:?}", ip_addr);
+
             Ok(())
         }