From 7954c85b7daae2de9ab894d0b34d0646e5356125 Mon Sep 17 00:00:00 2001
From: Neil McKechnie <neilmck999@gmail.com>
Date: Tue, 9 Mar 2021 10:27:38 +0000
Subject: [PATCH] Update freeMemory.cpp

---
 freeMemory.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/freeMemory.cpp b/freeMemory.cpp
index 500cff8..fd99d5b 100644
--- a/freeMemory.cpp
+++ b/freeMemory.cpp
@@ -50,9 +50,9 @@ int freeMemory() {
 // by estimation or inspection, that may be used by other 
 // called subroutines.
 int updateMinimumFreeMemory(unsigned char extraBytes) {
-  int spare = freeMemory()-extraBytes;
   byte sreg_save = SREG;
   noInterrupts();
+  int spare = freeMemory()-extraBytes;
   if (spare < minimum_free_memory) minimum_free_memory = spare;
   int returnValue = minimum_free_memory;
   SREG = sreg_save;