WIP: show recv_timeout API

TODO update text

beginner/apps/Cargo.lock

@@ -122,7 +122,7 @@ checksum = "b1411551beb3c11dedfb0a90a0fa256b47d28b9ec2cdff34c25a2fa59e45dbdc"
 [[package]]
 name = "nrf-hal-common"
 version = "0.10.0"
-source = "git+https://github.com/japaric/nrf-hal?branch=radio#d624e80e5724e4709081ed65abaf63271fe1eca7"
+source = "git+https://github.com/japaric/nrf-hal?branch=radio#7076639891fd2493e1c61a7aca71944b48ae0458"
 dependencies = [
  "cast",
  "cortex-m",
@@ -137,7 +137,7 @@ dependencies = [
 [[package]]
 name = "nrf52840-hal"
 version = "0.10.0"
-source = "git+https://github.com/japaric/nrf-hal?branch=radio#d624e80e5724e4709081ed65abaf63271fe1eca7"
+source = "git+https://github.com/japaric/nrf-hal?branch=radio#7076639891fd2493e1c61a7aca71944b48ae0458"
 dependencies = [
  "cast",
  "cortex-m",

beginner/apps/src/bin/radio-recv.rs

@@ -4,9 +4,8 @@
 
 use core::str;
 
-use cortex_m::asm;
 use cortex_m_rt::entry;
-use dk::ieee802154::Packet;
+use dk::ieee802154::{Error, Packet};
 use panic_log as _; // the panicking behavior
 
 #[entry]
@@ -14,17 +13,27 @@ fn main() -> ! {
     // initializes the peripherals
     let board = dk::init().unwrap();
     let mut radio = board.radio;
+    let mut timer = board.timer;
 
     let mut packet = Packet::new();
     let msg = b"olleh";
     packet.copy_from_slice(msg);
     radio.send(&packet);
     log::info!("sent: {:?}", msg);
-    let crc = radio.recv(&mut packet);
-    let s = str::from_utf8(&*packet).expect("response is not valid UTF-8");
-    log::info!("received: {} (CRC={:?})", s, crc);
+    let timeout = 1_000;
+    let res = radio.recv_timeout(&mut packet, &mut timer, timeout);
 
-    loop {
-        asm::bkpt();
+    match res {
+        Ok(crc) => {
+            log::info!(
+                "received: {} (CRC={})",
+                str::from_utf8(&*packet).expect("response is not valid UTF-8"),
+                crc
+            );
+        }
+        Err(Error::Crc(crc)) => log::error!("invalid CRC: {:06x}", crc),
+        Err(Error::Timeout) => log::error!("no response within {} ms", timeout),
     }
+
+    dk::exit()
 }

boards/dk/src/lib.rs

@@ -5,6 +5,7 @@
 #![no_std]
 
 use core::{
+    ops,
     sync::atomic::{AtomicU32, Ordering},
     time::Duration,
 };
@@ -118,7 +119,7 @@ impl Led {
     }
 }
 
-/// A timer for blocking delay
+/// A timer for creating blocking delays
 pub struct Timer {
     inner: hal::Timer<hal::target::TIMER0, OneShot>,
 }
@@ -157,7 +158,19 @@ impl Timer {
     }
 }
 
-// add Instant API
+impl ops::Deref for Timer {
+    type Target = hal::Timer<hal::target::TIMER0, OneShot>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.inner
+    }
+}
+
+impl ops::DerefMut for Timer {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.inner
+    }
+}
 
 /// Initializes the board
 ///