OpenDevicePartnership · magravel · Jul 7, 2025
@@ -44,7 +44,7 @@ embassy-sync = { git = "https://github.com/embassy-rs/embassy" }
 embassy-time = { git = "https://github.com/embassy-rs/embassy" }
 embassy-time-driver = { git = "https://github.com/embassy-rs/embassy" }
 embedded-batteries-async = "0.1.0"
-embedded-cfu-protocol = { git = "https://github.com/OpenDevicePartnership/embedded-cfu", version = "0.1.0" }
+embedded-cfu-protocol = { git = "https://github.com/OpenDevicePartnership/embedded-cfu", version = "0.2.0" }
 embedded-hal = "1.0"
 embedded-hal-async = "1.0"
 embedded-hal-nb = "1.0"

@@ -3,38 +3,39 @@ use core::future::Future;
 use embedded_cfu_protocol::components::CfuComponentTraits;
 use embedded_cfu_protocol::host::{CfuHostStates, CfuUpdater};
 use embedded_cfu_protocol::protocol_definitions::*;
-use embedded_cfu_protocol::{CfuImage, CfuWriter, CfuWriterDefault, CfuWriterError};
+use embedded_cfu_protocol::{
+    CfuImage,
+    writer::{CfuWriterAsync, CfuWriterError, CfuWriterNop},
+};
 use heapless::Vec;
 
 use crate::CfuError;
 
 /// All host side Cfu traits, in some cases this will originate from a OS driver for CFU
-pub trait CfuHost: CfuHostStates {
+pub trait CfuHost<W>: CfuHostStates<W> {
     /// Get all images
     fn get_cfu_images<I: CfuImage>(&self) -> impl Future<Output = Result<Vec<I, MAX_CMPT_COUNT>, CfuError>>;
     /// Gets the firmware version of all components
-    fn get_all_fw_versions<T: CfuWriter>(
+    fn get_all_fw_versions(
         self,
-        writer: &mut T,
+        writer: &mut W,
         primary_cmpt: ComponentId,
     ) -> impl Future<Output = Result<GetFwVersionResponse, CfuError>>;
     /// Goes through the offer list and returns a slice of offer responses
-    fn process_cfu_offers<'a, T: CfuWriter>(
+    fn process_cfu_offers<'a>(
         offer_commands: &'a [FwUpdateOffer],
-        writer: &mut T,
+        writer: &mut W,
     ) -> impl Future<Output = Result<&'a [FwUpdateOfferResponse], CfuError>>;
     /// For a specific component, update its content
-    fn update_cfu_content<T: CfuWriter>(
-        writer: &mut T,
-    ) -> impl Future<Output = Result<FwUpdateContentResponse, CfuError>>;
+    fn update_cfu_content(writer: &mut W) -> impl Future<Output = Result<FwUpdateContentResponse, CfuError>>;
     /// For a specific image that was updated, validate its content
     fn is_cfu_image_valid<I: CfuImage>(image: I) -> impl Future<Output = Result<bool, CfuError>>;
 }
 
 pub struct CfuHostInstance<I: CfuImage, C: CfuComponentTraits> {
     pub updater: CfuUpdater,
     pub images: heapless::Vec<I, MAX_CMPT_COUNT>,
-    pub writer: CfuWriterDefault,
+    pub writer: CfuWriterNop,
     pub primary_cmpt: C,
     pub host_token: HostToken,
 }
@@ -45,15 +46,15 @@ impl<I: CfuImage, C: CfuComponentTraits> CfuHostInstance<I, C> {
         Self {
             updater: CfuUpdater {},
             images: Vec::new(),
-            writer: CfuWriterDefault::default(),
+            writer: CfuWriterNop,
             primary_cmpt,
             host_token: HostToken::Driver,
         }
     }
 }
 
-impl<I: CfuImage, C: CfuComponentTraits> CfuHostStates for CfuHostInstance<I, C> {
-    async fn start_transaction<T: CfuWriter>(self, _writer: &mut T) -> Result<FwUpdateOfferResponse, CfuProtocolError> {
+impl<I: CfuImage, C: CfuComponentTraits, W: CfuWriterAsync> CfuHostStates<W> for CfuHostInstance<I, C> {
+    async fn start_transaction(self, _writer: &mut W) -> Result<FwUpdateOfferResponse, CfuProtocolError> {
         let _mock_cmd = FwUpdateOfferInformation::new(OfferInformationComponentInfo::new(
             HostToken::Driver,
             SpecialComponentIds::Info,
@@ -62,10 +63,7 @@ impl<I: CfuImage, C: CfuComponentTraits> CfuHostStates for CfuHostInstance<I, C>
         let mockresponse = FwUpdateOfferResponse::default();
         Ok(mockresponse)
     }
-    async fn notify_start_offer_list<T: CfuWriter>(
-        self,
-        writer: &mut T,
-    ) -> Result<FwUpdateOfferResponse, CfuProtocolError> {
+    async fn notify_start_offer_list(self, writer: &mut W) -> Result<FwUpdateOfferResponse, CfuProtocolError> {
         // Serialize FwUpdateOfferInformation to bytes
         let mock_cmd = FwUpdateOfferInformation::new(OfferInformationComponentInfo::new(
             HostToken::Driver,
@@ -89,10 +87,7 @@ impl<I: CfuImage, C: CfuComponentTraits> CfuHostStates for CfuHostInstance<I, C>
         }
     }
 
-    async fn notify_end_offer_list<T: CfuWriter>(
-        self,
-        writer: &mut T,
-    ) -> Result<FwUpdateOfferResponse, CfuProtocolError> {
+    async fn notify_end_offer_list(self, writer: &mut W) -> Result<FwUpdateOfferResponse, CfuProtocolError> {
         let mock_cmd = FwUpdateOfferInformation::new(OfferInformationComponentInfo::new(
             HostToken::Driver,
             SpecialComponentIds::Info,
@@ -128,14 +123,14 @@ impl<I: CfuImage, C: CfuComponentTraits> CfuHostStates for CfuHostInstance<I, C>
     }
 }
 
-impl<I: CfuImage, C: CfuComponentTraits> CfuHost for CfuHostInstance<I, C> {
+impl<I: CfuImage, C: CfuComponentTraits, W: CfuWriterAsync> CfuHost<W> for CfuHostInstance<I, C> {
     async fn get_cfu_images<T: CfuImage>(&self) -> Result<Vec<T, MAX_CMPT_COUNT>, CfuError> {
         Err(CfuError::BadImage)
     }
 
-    async fn get_all_fw_versions<T: CfuWriter>(
+    async fn get_all_fw_versions(
         self,
-        _writer: &mut T,
+        _writer: &mut W,
         primary_cmpt: ComponentId,
     ) -> Result<GetFwVersionResponse, CfuError> {
         let mut component_count: u8 = 0;
@@ -172,15 +167,15 @@ impl<I: CfuImage, C: CfuComponentTraits> CfuHost for CfuHostInstance<I, C> {
         }
     }
 
-    async fn process_cfu_offers<'a, T: CfuWriter>(
+    async fn process_cfu_offers<'a>(
         _offer_commands: &'a [FwUpdateOffer],
-        _writer: &mut T,
+        _writer: &mut W,
     ) -> Result<&'a [FwUpdateOfferResponse], CfuError> {
         // TODO
         Err(CfuError::BadImage)
     }
 
-    async fn update_cfu_content<T: CfuWriter>(_writer: &mut T) -> Result<FwUpdateContentResponse, CfuError> {
+    async fn update_cfu_content(_writer: &mut W) -> Result<FwUpdateContentResponse, CfuError> {
         Err(CfuError::ProtocolError(CfuProtocolError::WriterError(
             CfuWriterError::Other,
         )))

@@ -1,10 +1,12 @@
 #![no_std]
+
 use embassy_sync::once_lock::OnceLock;
 use embedded_cfu_protocol::client::CfuReceiveContent;
+use embedded_cfu_protocol::components::CfuComponentTraits;
 use embedded_cfu_protocol::protocol_definitions::*;
 use embedded_services::cfu::component::*;
 use embedded_services::cfu::{CfuError, ContextToken};
-use embedded_services::{comms, error, info};
+use embedded_services::{comms, error, info, trace};
 
 pub mod buffer;
 pub mod host;
@@ -17,8 +19,21 @@ pub struct CfuClient {
     tp: comms::Endpoint,
 }
 
-/// use default "do-nothing" implementations
-impl<T, C, E: Default> CfuReceiveContent<T, C, E> for CfuClient {}
+impl<T, C> CfuReceiveContent<T, C, ()> for CfuClient {
+    async fn process_command(&self, _args: Option<T>, _cmd: C) -> Result<(), ()> {
+        trace!("CfuClient CfuReceiveContent::process_command do nothing implementation.");
+        Ok(())
+    }
+
+    async fn prepare_components(
+        &self,
+        _args: Option<T>,
+        _primary_component: impl CfuComponentTraits,
+    ) -> Result<(), ()> {
+        trace!("CfuClient CfuReceiveContent::prepare_components do nothing implementation.");
+        Ok(())
+    }
+}
 
 impl CfuClient {
     /// Create a new Cfu Client

@@ -5,7 +5,7 @@ use embassy_sync::channel::Channel;
 use embassy_sync::mutex::Mutex;
 use embedded_cfu_protocol::components::{CfuComponentInfo, CfuComponentStorage, CfuComponentTraits};
 use embedded_cfu_protocol::protocol_definitions::*;
-use embedded_cfu_protocol::{CfuWriter, CfuWriterError};
+use embedded_cfu_protocol::writer::{CfuWriterAsync, CfuWriterError};
 use heapless::Vec;
 
 use super::CfuError;
@@ -173,7 +173,7 @@ impl CfuDevice {
 }
 
 /// Example for CFU Component
-pub struct CfuComponentDefault<W: CfuWriter> {
+pub struct CfuComponentDefault<W> {
     device: CfuDevice,
     is_dual_bank: bool,
     is_primary: bool,
@@ -182,19 +182,19 @@ pub struct CfuComponentDefault<W: CfuWriter> {
     writer: Mutex<GlobalRawMutex, W>,
 }
 
-impl<W: CfuWriter + Default> Default for CfuComponentDefault<W> {
+impl<W: CfuWriterAsync + Default> Default for CfuComponentDefault<W> {
     fn default() -> Self {
         Self::new(1, false, [None; MAX_SUBCMPT_COUNT], W::default())
     }
 }
 
-impl<W: CfuWriter> CfuDeviceContainer for CfuComponentDefault<W> {
+impl<W: CfuWriterAsync> CfuDeviceContainer for CfuComponentDefault<W> {
     fn get_cfu_component_device(&self) -> &CfuDevice {
         &self.device
     }
 }
 
-impl<W: CfuWriter> CfuComponentDefault<W> {
+impl<W: CfuWriterAsync> CfuComponentDefault<W> {
     /// Constructor
     pub fn new(
         id: ComponentId,
@@ -283,7 +283,7 @@ impl<W: CfuWriter> CfuComponentDefault<W> {
     }
 }
 
-impl<W: CfuWriter> CfuComponentInfo for CfuComponentDefault<W> {
+impl<W: CfuWriterAsync> CfuComponentInfo for CfuComponentDefault<W> {
     fn get_component_id(&self) -> ComponentId {
         self.device.component_id()
     }
@@ -304,25 +304,29 @@ impl<W: CfuWriter> CfuComponentInfo for CfuComponentDefault<W> {
     }
 }
 
-impl<W: CfuWriter> CfuWriter for CfuComponentDefault<W> {
-    async fn cfu_write(&self, mem_offset: Option<usize>, data: &[u8]) -> Result<(), CfuWriterError> {
+impl<W: CfuWriterAsync> CfuWriterAsync for CfuComponentDefault<W> {
+    async fn cfu_write(&mut self, mem_offset: Option<usize>, data: &[u8]) -> Result<(), CfuWriterError> {
         self.writer.lock().await.cfu_write(mem_offset, data).await
     }
     async fn cfu_write_read(
-        &self,
+        &mut self,
         mem_offset: Option<usize>,
         data: &[u8],
         read: &mut [u8],
     ) -> Result<(), CfuWriterError> {
         self.writer.lock().await.cfu_write_read(mem_offset, data, read).await
     }
 
-    async fn cfu_read(&self, mem_offset: Option<usize>, read: &mut [u8]) -> Result<(), CfuWriterError> {
+    async fn cfu_read(&mut self, mem_offset: Option<usize>, read: &mut [u8]) -> Result<(), CfuWriterError> {
         self.writer.lock().await.cfu_read(mem_offset, read).await
     }
+
+    async fn cfu_storage(&mut self, mem_offset: usize, read: &[u8]) -> Result<(), CfuWriterError> {
+        self.writer.lock().await.cfu_storage(mem_offset, read).await
+    }
 }
 
-impl<W: CfuWriter> CfuComponentStorage for CfuComponentDefault<W> {
+impl<W: CfuWriterAsync> CfuComponentStorage for CfuComponentDefault<W> {
     fn get_storage_offset(&self) -> usize {
         self.storage_offset
     }
@@ -344,7 +348,7 @@ async fn default_get_fw_version() -> Result<FwVersion, CfuProtocolError> {
     Ok(FwVersion::default())
 }
 
-impl<W: CfuWriter + Default> CfuComponentTraits for CfuComponentDefault<W> {}
+impl<W: CfuWriterAsync + Default> CfuComponentTraits for CfuComponentDefault<W> {}
 
 /// Example Wrapper for CFU Component
 /// Takes type which implements `CFUComponentTraits` and `CfuDeviceContainer`

@@ -47,7 +47,7 @@ futures = { version = "0.3.30", default-features = false, features = [
 mimxrt600-fcb = "0.1.0"
 mimxrt685s-pac = { version = "*", features = ["rt", "critical-section"] }
 
-embedded-cfu-protocol = { git = "https://github.com/OpenDevicePartnership/embedded-cfu" }
+embedded-cfu-protocol = { git = "https://github.com/OpenDevicePartnership/embedded-cfu", version = "0.2.0"}
 embedded-services = { path = "../../embedded-service", features = ["defmt"] }
 power-button-service = { path = "../../power-button-service", features = [
     "defmt",

@@ -28,7 +28,7 @@ power-policy-service = { path = "../../power-policy-service", features = [
     "log",
 ] }
 cfu-service = { path = "../../cfu-service", features = ["log"] }
-embedded-cfu-protocol = { git = "https://github.com/OpenDevicePartnership/embedded-cfu" }
+embedded-cfu-protocol = { git = "https://github.com/OpenDevicePartnership/embedded-cfu", version = "0.2.0" }
 
 embedded-batteries-async = "0.1.0"
 battery-service = { path = "../../battery-service", features = ["log"] }