From c843680e07a0e41f2666ad5d7b7901255f05c001 Mon Sep 17 00:00:00 2001
From: jgromes <jan.gromes@gmail.com>
Date: Sun, 18 Jul 2021 10:19:07 +0200
Subject: [PATCH] [PHY] Fixed negative random numbers (#328)

---
 src/protocols/PhysicalLayer/PhysicalLayer.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/protocols/PhysicalLayer/PhysicalLayer.cpp b/src/protocols/PhysicalLayer/PhysicalLayer.cpp
index c81d306a..d32670a7 100644
--- a/src/protocols/PhysicalLayer/PhysicalLayer.cpp
+++ b/src/protocols/PhysicalLayer/PhysicalLayer.cpp
@@ -159,6 +159,10 @@ int32_t PhysicalLayer::random(int32_t max) {
 
   // create 32-bit TRNG number
   int32_t randNum = ((int32_t)randBuff[0] << 24) | ((int32_t)randBuff[1] << 16) | ((int32_t)randBuff[2] << 8) | ((int32_t)randBuff[3]);
+  if(randNum < 0) {
+    randNum *= -1;
+  }
+  RADIOLIB_DEBUG_PRINTLN(randNum);
   return(randNum % max);
 }