From 6f8e53c0607dc2aedff5d2a71b8d890f53b07b20 Mon Sep 17 00:00:00 2001
From: DeFiDude <59237470+DeFiDude@users.noreply.github.com>
Date: Sat, 21 Mar 2026 02:19:07 -0600
Subject: [PATCH] Fix LoRa TX killed by receive() after handle_incoming
 (untested)

---
 src/transport/LoRaInterface.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/transport/LoRaInterface.cpp b/src/transport/LoRaInterface.cpp
index 59e4913..c96b13d 100644
--- a/src/transport/LoRaInterface.cpp
+++ b/src/transport/LoRaInterface.cpp
@@ -139,8 +139,13 @@ void LoRaInterface::loop() {
         memcpy(buf.writable(payloadSize), raw + RNODE_HEADER_L, payloadSize);
         InterfaceImpl::handle_incoming(buf);
 
-        // Re-enter RX
-        _radio->receive();
+        // Re-enter RX — but only if handle_incoming didn't trigger a TX.
+        // handle_incoming() can synchronously call send_outgoing() (for link
+        // proofs, path responses), which starts an async TX via endPacket(true).
+        // Calling receive() here would abort that TX (clears IRQ flags + enters RX).
+        if (!_txPending) {
+            _radio->receive();
+        }
     } else if (packetSize > 0) {
         // Packet too small (only header, no payload) — discard
         Serial.printf("[LORA_IF] RX runt packet (%d bytes), discarding\n", packetSize);