From e8646f5ede777bc883079eec42d6989aa14b8f7a Mon Sep 17 00:00:00 2001
From: Wessel Nieboer <wessel@weebl.me>
Date: Sat, 7 Feb 2026 16:58:06 +0100
Subject: [PATCH] Parse as signed int

---
 examples/companion_radio/MyMesh.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/examples/companion_radio/MyMesh.cpp b/examples/companion_radio/MyMesh.cpp
index f8e90be5..96716091 100644
--- a/examples/companion_radio/MyMesh.cpp
+++ b/examples/companion_radio/MyMesh.cpp
@@ -1228,10 +1228,11 @@ void MyMesh::handleCmdFrame(size_t len) {
       writeErrFrame(ERR_CODE_ILLEGAL_ARG);
     }
   } else if (cmd_frame[0] == CMD_SET_RADIO_TX_POWER) {
-    if (cmd_frame[1] > MAX_LORA_TX_POWER) {
+    int8_t power = (int8_t)cmd_frame[1];
+    if (power < -9 || power > MAX_LORA_TX_POWER) {
       writeErrFrame(ERR_CODE_ILLEGAL_ARG);
     } else {
-      _prefs.tx_power_dbm = cmd_frame[1];
+      _prefs.tx_power_dbm = power;
       savePrefs();
       radio_set_tx_power(_prefs.tx_power_dbm);
       writeOKFrame();