From bd62939713678e2f94c7228dd4a81807e5618667 Mon Sep 17 00:00:00 2001
From: Neil McKechnie <neilmck999@gmail.com>
Date: Sat, 4 Feb 2023 20:55:14 +0000
Subject: [PATCH] Fix handling of hex numbers to avoid extending MSB (sign bit)

Also, added format %X (unsigned long) to complement %x (unsigned int).
---
 StringFormatter.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/StringFormatter.cpp b/StringFormatter.cpp
index cc78714..c1f20c4 100644
--- a/StringFormatter.cpp
+++ b/StringFormatter.cpp
@@ -108,7 +108,8 @@ void StringFormatter::send2(Print * stream,const FSH* format, va_list args) {
       case 'l': printPadded(stream,va_arg(args, long), formatWidth, formatLeft); break;
       case 'b': stream->print(va_arg(args, int), BIN); break;
       case 'o': stream->print(va_arg(args, int), OCT); break;
-      case 'x': stream->print(va_arg(args, int), HEX); break;
+      case 'x': stream->print((unsigned int)va_arg(args, unsigned int), HEX); break;
+      case 'X': stream->print((unsigned long)va_arg(args, unsigned long), HEX); break;
       //case 'f': stream->print(va_arg(args, double), 2); break;
       //format width prefix
       case '-':