From 8aac93a59344ba49977228e34c8a29902ac41e13 Mon Sep 17 00:00:00 2001
From: Antti Kauppila <antti.kauppila@arm.com>
Date: Wed, 13 Nov 2019 09:38:02 +0200
Subject: [PATCH] ATHandler build warning fixed

---
 features/cellular/framework/AT/ATHandler.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/features/cellular/framework/AT/ATHandler.cpp b/features/cellular/framework/AT/ATHandler.cpp
index 761fd46fff..95bc31bfe6 100644
--- a/features/cellular/framework/AT/ATHandler.cpp
+++ b/features/cellular/framework/AT/ATHandler.cpp
@@ -1606,7 +1606,7 @@ void ATHandler::write_hex_string(char *str, size_t size)
     }
 
     char hexbuf[2];
-    for (int i = 0; i < size; i++) {
+    for (size_t i = 0; i < size; i++) {
         hexbuf[0] = hex_values[((str[i]) >> 4) & 0x0F];
         hexbuf[1] = hex_values[(str[i]) & 0x0F];
         write(hexbuf, 2);