From 39780656ef58b9d928902c4dcc6c60e866b74a3e Mon Sep 17 00:00:00 2001
From: korbinianbauer <64415847+korbinianbauer@users.noreply.github.com>
Date: Thu, 23 Oct 2025 16:15:12 +0200
Subject: [PATCH] Don't assign negative SNR to unsigned int type

SNR-based contention windows are broken on systems with 64-bit long integers.
Fixes #8430
---
 src/mesh/RadioInterface.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mesh/RadioInterface.cpp b/src/mesh/RadioInterface.cpp
index 31ec5acc5..3c0da4494 100644
--- a/src/mesh/RadioInterface.cpp
+++ b/src/mesh/RadioInterface.cpp
@@ -272,10 +272,10 @@ uint32_t RadioInterface::getTxDelayMsec()
 uint8_t RadioInterface::getCWsize(float snr)
 {
     // The minimum value for a LoRa SNR
-    const uint32_t SNR_MIN = -20;
+    const int32_t SNR_MIN = -20;
 
     // The maximum value for a LoRa SNR
-    const uint32_t SNR_MAX = 10;
+    const int32_t SNR_MAX = 10;
 
     return map(snr, SNR_MIN, SNR_MAX, CWmin, CWmax);
 }