blob: 7d9f33dc5050f67ff5e6bf79c43d8ae54a0a5894 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
/**
* sd/SdFatUtil.cpp
*
* Arduino SdFat Library
* Copyright (c) 2008 by William Greiman
*
* This file is part of the Arduino Sd2Card Library
*/
#include "../inc/MarlinConfig.h"
#if ENABLED(SDSUPPORT)
#include "SdFatUtil.h"
#include <string.h>
/**
* Amount of free RAM
* \return The number of free bytes.
*/
#ifdef __arm__
extern "C" char* sbrk(int incr);
int SdFatUtil::FreeRam() {
char top;
return &top - reinterpret_cast<char*>(sbrk(0));
}
#else
extern char* __brkval;
extern char __bss_end;
int SdFatUtil::FreeRam() {
char top;
return __brkval ? &top - __brkval : &top - &__bss_end;
}
#endif
#endif // SDSUPPORT
|
