[server] Add support for embedded-io-async v0.6 (#83)

* Initial add, still some todos

* A lot of cleanup

* Revert temp default tweak

* Add example project

* Add basic serial server

* Add to CI

Author: jamesmunns

ci.sh

@@ -42,22 +42,24 @@ RUSTFLAGS="--cfg=web_sys_unstable_apis" \
 cargo check \
     --manifest-path source/postcard-rpc/Cargo.toml \
     --no-default-features \
-    --features=embassy-usb-0_3-server \
+    --features=embassy-usb-0_3-server,embassy-usb-0_4-server \
     --target thumbv7em-none-eabihf
 cargo check \
     --manifest-path source/postcard-rpc/Cargo.toml \
     --no-default-features \
-    --features=embassy-usb-0_4-server \
+    --features=embassy-usb-0_5-server \
     --target thumbv7em-none-eabihf
 cargo check \
     --manifest-path source/postcard-rpc/Cargo.toml \
     --no-default-features \
-    --features=embassy-usb-0_5-server \
+    --features=embedded-io-async-0_6-server \
     --target thumbv7em-none-eabihf
 
 # Example projects
 cargo build \
     --manifest-path example/workbook-host/Cargo.toml
+cargo build \
+    --manifest-path example/serial-host/Cargo.toml
 # Current (embassy-usb v0.5)
 cargo build \
     --manifest-path example/firmware/Cargo.toml \
@@ -69,6 +71,10 @@ cargo build \
 cargo build \
     --manifest-path example/firmware-eusb-v0_3/Cargo.toml \
     --target thumbv6m-none-eabi
+# embedded-io support
+cargo build \
+    --manifest-path example/nrf52840-serial/Cargo.toml \
+    --target thumbv7em-none-eabihf
 
 # Test Project
 cargo test \

example/nrf52840-serial/.cargo/config.toml

@@ -0,0 +1,12 @@
+[target.'cfg(all(target_arch = "arm", target_os = "none"))']
+runner = "probe-rs run --chip nrf52840_xxAA --protocol swd"
+
+[build]
+target = "thumbv7em-none-eabihf"
+
+[env]
+DEFMT_LOG = "debug"
+
+[unstable]
+build-std = ["core"]
+build-std-features = ["panic_immediate_abort"]