From a6ba463c4c73b0e37086ada165f3be3e77b04ceb Mon Sep 17 00:00:00 2001
From: nicoboy <contact@nicolasboyer.fr>
Date: Sun, 21 Jun 2026 16:26:49 +0200
Subject: [PATCH] Reduce UART buffer flush threshold from 512 to 64 bytes

Prevents MAVLink frames from being split at the 512-byte boundary
into two UDP packets. With 64B threshold + 3ms inactivity timeout,
each MAVLink frame (9-280 bytes) fits in a single UDP packet.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 src/main.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main.cpp b/src/main.cpp
index dae6a46..4c3675e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -41,7 +41,7 @@ uint32_t bytesUdpToUart = 0;
 unsigned long lastStatsTime = 0;
 
 // ── Buffer UART → UDP ────────────────────────────────────
-#define UART_BUF_SIZE   512
+#define UART_BUF_SIZE   64
 #define UART_FLUSH_MS   3
 uint8_t uartBuf[UART_BUF_SIZE];
 int uartBufLen = 0;