First commit

core/archipelago/src/api/rpc/dispatcher.rs

@@ -387,6 +387,10 @@ impl RpcHandler {
             // Mesh networking (Meshcore LoRa)
             "mesh.status" => self.handle_mesh_status().await,
             "mesh.probe-device" => self.handle_mesh_probe_device(params).await,
+            "mesh.flash-list-firmware" => self.handle_mesh_flash_list_firmware(params).await,
+            "mesh.flash-device" => self.handle_mesh_flash_device(params).await,
+            "mesh.flash-status" => self.handle_mesh_flash_status().await,
+            "mesh.flash-cancel" => self.handle_mesh_flash_cancel().await,
             "mesh.peers" => self.handle_mesh_peers().await,
             "mesh.messages" => self.handle_mesh_messages(params).await,
             "mesh.debug-dump" => self.handle_mesh_debug_dump().await,

core/archipelago/src/api/rpc/mesh/flash.rs

@@ -0,0 +1,132 @@
+use super::super::RpcHandler;
+use crate::mesh;
+use crate::mesh::flash::{self, FlashBoard, FlashJobStatus};
+use crate::mesh::types::DeviceType;
+use anyhow::Result;
+
+fn parse_family(s: &str) -> Result<DeviceType> {
+    match s.trim().to_lowercase().as_str() {
+        "meshcore" => Ok(DeviceType::Meshcore),
+        "meshtastic" => Ok(DeviceType::Meshtastic),
+        "reticulum" | "rnode" => Ok(DeviceType::Reticulum),
+        other => anyhow::bail!("Unknown firmware family: {other} (expected meshcore|meshtastic|reticulum)"),
+    }
+}
+
+fn parse_board(s: &str) -> Result<FlashBoard> {
+    match s.trim().to_lowercase().as_str() {
+        "heltec-v3" | "heltec_v3" | "heltecv3" => Ok(FlashBoard::HeltecV3),
+        "heltec-v4" | "heltec_v4" | "heltecv4" => Ok(FlashBoard::HeltecV4),
+        other => anyhow::bail!("Unknown board: {other} (expected heltec-v3|heltec-v4)"),
+    }
+}
+
+impl RpcHandler {
+    /// mesh.flash-list-firmware — resolve the available firmware version(s)
+    /// for a given family. v1 only ever surfaces "latest".
+    pub(in crate::api::rpc) async fn handle_mesh_flash_list_firmware(
+        &self,
+        params: Option<serde_json::Value>,
+    ) -> Result<serde_json::Value> {
+        let family = params
+            .as_ref()
+            .and_then(|p| p.get("family"))
+            .and_then(|v| v.as_str())
+            .ok_or_else(|| anyhow::anyhow!("Missing family"))?;
+        let family = parse_family(family)?;
+        let versions = flash::list_firmware(family).await?;
+        Ok(serde_json::json!({ "versions": versions }))
+    }
+
+    /// mesh.flash-device — erase and reflash a detected LoRa radio with the
+    /// latest firmware for the given family, defaulting to a full chip
+    /// erase before write. `board` is optional: if the port's USB vid:pid
+    /// unambiguously resolves to a known board, that's used; otherwise the
+    /// caller must supply it explicitly (see `flash::resolve_flash_board`'s
+    /// doc comment on why we refuse to guess).
+    pub(in crate::api::rpc) async fn handle_mesh_flash_device(
+        &self,
+        params: Option<serde_json::Value>,
+    ) -> Result<serde_json::Value> {
+        let path = params
+            .as_ref()
+            .and_then(|p| p.get("path"))
+            .and_then(|v| v.as_str())
+            .ok_or_else(|| anyhow::anyhow!("Missing path"))?
+            .to_string();
+        let family = params
+            .as_ref()
+            .and_then(|p| p.get("family"))
+            .and_then(|v| v.as_str())
+            .ok_or_else(|| anyhow::anyhow!("Missing family"))?;
+        let family = parse_family(family)?;
+
+        let detected = mesh::detect_devices().await;
+        anyhow::ensure!(
+            detected.iter().any(|d| d == &path),
+            "{path} is not a detected mesh-radio candidate port"
+        );
+
+        let board = match params
+            .as_ref()
+            .and_then(|p| p.get("board"))
+            .and_then(|v| v.as_str())
+        {
+            Some(explicit) => parse_board(explicit)?,
+            None => {
+                let info = mesh::detect_devices_info()
+                    .await
+                    .into_iter()
+                    .find(|d| d.path == path);
+                info.as_ref()
+                    .and_then(flash::resolve_flash_board)
+                    .ok_or_else(|| {
+                        anyhow::anyhow!(
+                            "Could not auto-detect the board on {path} — specify board explicitly"
+                        )
+                    })?
+            }
+        };
+
+        flash::start_flash_job(
+            &self.flash_job,
+            &self.mesh_service_arc(),
+            self.config.data_dir.clone(),
+            path,
+            board,
+            family,
+        )
+        .await?;
+
+        Ok(serde_json::json!({ "started": true }))
+    }
+
+    /// mesh.flash-status — poll the current (or most recent) flash job.
+    pub(in crate::api::rpc) async fn handle_mesh_flash_status(&self) -> Result<serde_json::Value> {
+        let job = self.flash_job.read().await;
+        match job.as_ref() {
+            Some(j) => {
+                let status: FlashJobStatus = j.snapshot().await;
+                let mut value = serde_json::to_value(&status)?;
+                if let Some(obj) = value.as_object_mut() {
+                    obj.insert("active".into(), (!status.done).into());
+                }
+                Ok(value)
+            }
+            None => Ok(serde_json::json!({ "active": false })),
+        }
+    }
+
+    /// mesh.flash-cancel — best-effort; only honored before erase/write has
+    /// started (see `FlashJob::cancel`'s doc comment).
+    pub(in crate::api::rpc) async fn handle_mesh_flash_cancel(&self) -> Result<serde_json::Value> {
+        let job = self.flash_job.read().await;
+        match job.as_ref() {
+            Some(j) => {
+                j.cancel().await?;
+                Ok(serde_json::json!({ "cancelled": true }))
+            }
+            None => anyhow::bail!("No flash job in progress"),
+        }
+    }
+}

core/archipelago/src/api/rpc/mesh/mod.rs

@@ -1,5 +1,6 @@
 mod assistant;
 mod bitcoin_ops;
+mod flash;
 mod messaging;
 mod safety;
 mod status;

core/archipelago/src/api/rpc/mod.rs

@@ -88,6 +88,9 @@ pub struct RpcHandler {
     endpoint_rate_limiter: EndpointRateLimiter,
     response_cache: ResponseCache,
     mesh_service: Arc<tokio::sync::RwLock<Option<crate::mesh::MeshService>>>,
+    /// LoRa radio firmware-flash job state, sibling to `mesh_service` — one
+    /// job at a time, since flashing needs exclusive access to the port.
+    flash_job: crate::mesh::flash::FlashJobHandle,
     transport_router: Arc<tokio::sync::RwLock<Option<Arc<crate::transport::TransportRouter>>>>,
     /// Shared content-addressed blob store. Set by ApiHandler after construction
     /// so mesh.send-content / mesh.fetch-content RPCs can reach it without a
@@ -159,6 +162,7 @@ impl RpcHandler {
             endpoint_rate_limiter,
             response_cache: ResponseCache::new(5),
             mesh_service: Arc::new(tokio::sync::RwLock::new(None)),
+            flash_job: crate::mesh::flash::new_job_handle(),
             transport_router: Arc::new(tokio::sync::RwLock::new(None)),
             blob_store: Arc::new(tokio::sync::RwLock::new(None)),
             self_pubkey_hex: Arc::new(tokio::sync::RwLock::new(None)),