Support multiple flash instances in embassy-boot

* Add FlashProvider and FlashConfig traits to define flash
characteristics
* Use traits in bootloader to retrieve flash handles and for
copying data between flash instances
* Add convenience implementations for using a single flash instance.

3 files changed, 4 insertions, 6 deletions

diff --git a/examples/boot/.cargo/config.toml b/examples/boot/.cargo/config.toml
index d044e9b4c..bbe06fd03 100644
--- a/examples/boot/.cargo/config.toml
+++ b/examples/boot/.cargo/config.toml
@@ -1,5 +1,4 @@
 [unstable]
-namespaced-features = true
 build-std = ["core"]
 build-std-features = ["panic_immediate_abort"]
 
diff --git a/examples/boot/Cargo.toml b/examples/boot/Cargo.toml
index 36e2e169d..2da659478 100644
--- a/examples/boot/Cargo.toml
+++ b/examples/boot/Cargo.toml
@@ -5,8 +5,8 @@ name = "embassy-boot-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy = { version = "0.1.0", path = "../../embassy" }
-embassy-nrf = { version = "0.1.0", path = "../../embassy-nrf", features = ["time-driver-rtc1", "gpiote"] }
+embassy = { version = "0.1.0", path = "../../embassy", features = ["nightly"] }
+embassy-nrf = { version = "0.1.0", path = "../../embassy-nrf", features = ["time-driver-rtc1", "gpiote", "nightly"] }
 embassy-boot-nrf = { version = "0.1.0", path = "../../embassy-boot/nrf" }
 embassy-traits = { version = "0.1.0", path = "../../embassy-traits" }
 
diff --git a/examples/boot/src/bin/a.rs b/examples/boot/src/bin/a.rs
index 88880e688..d18b508cc 100644
--- a/examples/boot/src/bin/a.rs
+++ b/examples/boot/src/bin/a.rs
@@ -12,7 +12,6 @@ use embassy_nrf::{
     Peripherals,
 };
 use embassy_traits::adapter::BlockingAsync;
-use embedded_hal::digital::v2::InputPin;
 use panic_reset as _;
 
 static APP_B: &[u8] = include_bytes!("../../b.bin");
@@ -29,14 +28,14 @@ async fn main(_s: embassy::executor::Spawner, p: Peripherals) {
 
     loop {
         button.wait_for_any_edge().await;
-        if button.is_low().unwrap() {
+        if button.is_low() {
             let mut updater = updater::new();
             let mut offset = 0;
             for chunk in APP_B.chunks(4096) {
                 let mut buf: [u8; 4096] = [0; 4096];
                 buf[..chunk.len()].copy_from_slice(chunk);
                 updater
-                    .write_firmware(offset, &buf, &mut nvmc)
+                    .write_firmware(offset, &buf, &mut nvmc, 4096)
                     .await
                     .unwrap();
                 offset += chunk.len();