examples: Establish CoAP playground

examples/coap/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "coap"
+version = "0.1.0"
+authors = [ "Christian Amsüss <[email protected]>" ]
+edition.workspace = true
+publish = false
+
+[dependencies]
+embassy-executor = { workspace = true, default-features = false }
+embassy-net = { workspace = true, features = ["udp"] }
+embassy-time = { workspace = true, default-features = false }
+embedded-io-async = "0.6.1"
+heapless = { workspace = true }
+riot-rs = { path = "../../src/riot-rs", features = ["override-network-config"] }
+riot-rs-boards = { path = "../../src/riot-rs-boards" }

examples/coap/README.md

@@ -0,0 +1,14 @@
+# coap demo
+
+## About
+
+This application is a work in progress demo of running CoAP on RIOT-rs.
+
+## Roadmap
+
+Eventually, this should be 20 line demo.
+
+Until the CoAP roadmap is complete,
+this serves as a work bench, test bed, demo zone and playground at the same time.
+This application will grow as parts of the roadmap are added,
+and shrink as they become default or are wrapped into components of RIOT-rs.

examples/coap/laze.yml

@@ -0,0 +1,5 @@
+apps:
+  - name: coap
+    selects:
+      - ?release
+      - network

examples/coap/src/main.rs

@@ -0,0 +1,27 @@
+#![no_main]
+#![no_std]
+#![feature(type_alias_impl_trait)]
+#![feature(used_with_arg)]
+
+use riot_rs::{debug::println, embassy::network};
+
+#[riot_rs::task(autostart)]
+async fn udp_echo() {
+    let stack = network::network_stack().await.unwrap();
+
+    println!("Starting up CoAP server");
+
+    todo!("Work with {stack:p}");
+}
+
+// FIXME: So far, this is necessary boiler plate; see ../README.md#networking for details
+#[riot_rs::config(network)]
+fn network_config() -> embassy_net::Config {
+    use embassy_net::Ipv4Address;
+
+    embassy_net::Config::ipv4_static(embassy_net::StaticConfigV4 {
+        address: embassy_net::Ipv4Cidr::new(Ipv4Address::new(10, 42, 0, 61), 24),
+        dns_servers: heapless::Vec::new(),
+        gateway: Some(Ipv4Address::new(10, 42, 0, 1)),
+    })
+}

examples/laze.yml

@@ -6,6 +6,7 @@ defaults:
 subdirs:
   - benchmark
   - core-sizes
+  - coap
   - embassy
   - embassy-http-server
   - embassy-net-tcp