From b7c40964db93eb3df46b6aa8a5fb66ffbbc84dcc Mon Sep 17 00:00:00 2001
From: Pieter P <pieter.pas@outlook.com>
Date: Sun, 1 Sep 2024 16:19:21 +0200
Subject: [PATCH] Check USB connection status while writing

---
 src/MIDI_Interfaces/USBMIDI/LowLevel/BulkTX.ipp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/MIDI_Interfaces/USBMIDI/LowLevel/BulkTX.ipp b/src/MIDI_Interfaces/USBMIDI/LowLevel/BulkTX.ipp
index 673efbf0ea..a4a691a20d 100644
--- a/src/MIDI_Interfaces/USBMIDI/LowLevel/BulkTX.ipp
+++ b/src/MIDI_Interfaces/USBMIDI/LowLevel/BulkTX.ipp
@@ -51,7 +51,14 @@ void BulkTX<Derived, MessageTypeT, MaxPacketSizeV>::write(
         return;
     }
     const uint32_t *end = msgs + num_msgs;
-    while (msgs != end) msgs += write_impl(msgs, end - msgs);
+    while (msgs != end) {
+        auto sent = write_impl(msgs, end - msgs);
+        if (sent == 0 && !wait_connect()) {
+            writing.error.fetch_add(end - msgs, mo_rlx);
+            return;
+        }
+        msgs += sent;
+    }
 }
 
 template <class Derived, class MessageTypeT, uint16_t MaxPacketSizeV>