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Replaced 'int' type with 'intptr_t' type in pointer arithmetic for co… #3

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daf273e
Replaced 'int' type with 'intptr_t' type in pointer arithmetic for co…
s-t-a-n Jan 17, 2021
3b3b632
Updated README.md to reflect changes made to repo
s-t-a-n Feb 1, 2021
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8 changes: 5 additions & 3 deletions MemoryFree.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,8 @@
#include <WProgram.h>
#endif

#include <stdint.h>

extern unsigned int __heap_start;
extern void *__brkval;

Expand Down Expand Up @@ -39,13 +41,13 @@ int freeListSize()
int freeMemory()
{
int free_memory;
if ((int)__brkval == 0)
if ((intptr_t)__brkval == 0)
{
free_memory = ((int)&free_memory) - ((int)&__heap_start);
free_memory = ((intptr_t)&free_memory) - ((intptr_t)&__heap_start);
}
else
{
free_memory = ((int)&free_memory) - ((int)__brkval);
free_memory = ((intptr_t)&free_memory) - ((intptr_t)__brkval);
free_memory += freeListSize();
}
return free_memory;
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1 change: 1 addition & 0 deletions README.md
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Expand Up @@ -3,3 +3,4 @@ This is the excellent MemoryFree library from http://www.arduino.cc/playground/C
I am hosting it here so there is a quick and easy way to pull it down.

(20 Mar 2015) Repository updated with code from http://playground.arduino.cc/code/AvailableMemory
(17 Jan 2021) Replaced 'int' type with 'intptr_t' type in pointer arithmetic for compiling without -fpermisive