From 4c6929ebb96b01312c129777940f69edda70cc98 Mon Sep 17 00:00:00 2001
From: ryan kurte <ryan@kurte.nz>
Date: Fri, 11 Sep 2026 08:52:33 +1200
Subject: [PATCH 1/2] chore: downgrade some noisy log lines from debug to trace
 also adds a note about status bytes where you'll probably end up looking if
 they're not working

---
 lib/src/device.rs           | 5 ++++-
 lib/src/provider/context.rs | 6 +++---
 lib/src/transport/ble.rs    | 2 +-
 3 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/lib/src/device.rs b/lib/src/device.rs
index 56e8a79..539e2b8 100644
--- a/lib/src/device.rs
+++ b/lib/src/device.rs
@@ -158,9 +158,12 @@ impl<T: Exchange + Send> Device for T {
         }
 
         // Decode response data - status bytes
+        // NOTE: the `comm.tx`` vs. `comm.tx_length` distinction in io_legacy can
+        // result in some unexpected behaviour when trying to send status bytes.
+        // see: https://github.com/LedgerHQ/ledger-device-rust-sdk/issues/431
         let (resp, _) = RESP::decode(&buff[..n - 2])?;
 
-        debug!("RX: {resp:?}");
+        debug!("RX: {resp:02x?}");
 
         // Return decode response
         Ok(resp)
diff --git a/lib/src/provider/context.rs b/lib/src/provider/context.rs
index 927eb2a..da454b1 100644
--- a/lib/src/provider/context.rs
+++ b/lib/src/provider/context.rs
@@ -5,7 +5,7 @@ use tokio::{
     sync::mpsc::{unbounded_channel, UnboundedReceiver, UnboundedSender},
     task::LocalSet,
 };
-use tracing::{debug, error, warn};
+use tracing::{debug, error, trace, warn};
 
 use crate::{
     error::Error,
@@ -107,10 +107,10 @@ impl ProviderImpl {
 
         // Poll on incoming requests
         while let Some((req, tx)) = self.req_rx.recv().await {
-            debug!("LedgerProvider request: {:02x?}", req);
+            trace!("LedgerProvider request: {:02x?}", req);
 
             if let Some(resp) = self.handle_req(&req).await {
-                debug!("LedgerProvider response: {:02x?}", resp);
+                trace!("LedgerProvider response: {:02x?}", resp);
 
                 if let Err(e) = tx.send(resp) {
                     error!("Failed to forward response: {}", e);
diff --git a/lib/src/transport/ble.rs b/lib/src/transport/ble.rs
index 378f0f9..7e48fb8 100644
--- a/lib/src/transport/ble.rs
+++ b/lib/src/transport/ble.rs
@@ -100,7 +100,7 @@ impl BleTransport {
                     }
                 };
 
-                debug!("Peripheral: {p:?} props: {properties:?}");
+                trace!("Peripheral: {p:?} props: {properties:?}");
 
                 let Some(model) = properties
                     .services

From e52737e5cfce92d7daaf60aa195c90b96d49cff4 Mon Sep 17 00:00:00 2001
From: ryan kurte <120750323+ryan-sentz@users.noreply.github.com>
Date: Mon, 14 Sep 2026 12:29:48 +1200
Subject: [PATCH 2/2] downgrade EmptyResponse error logging as this happens
 when talking to stax (and presumably other touch) devices

---
 lib/src/transport/usb.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/src/transport/usb.rs b/lib/src/transport/usb.rs
index 812ecb1..2083ec9 100644
--- a/lib/src/transport/usb.rs
+++ b/lib/src/transport/usb.rs
@@ -257,7 +257,9 @@ impl UsbDevice {
 
         // Check read length is valid for following operations
         if n == 0 {
-            error!("Empty response");
+            // NOTE: this can happen when interacting with the new touch devices in
+            // situations that are not -strictly- errors.
+            debug!("Empty response");
             return Err(Error::EmptyResponse);
         } else if n < 7 {
             error!("Unexpected read length {n}");