mirror of
https://github.com/MarlinFirmware/Marlin.git
synced 2024-11-24 04:29:34 +00:00
75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
|
/* Arduino SdFat Library
|
||
|
|
* Copyright (C) 2008 by William Greiman
|
||
|
|
*
|
||
|
|
* This file is part of the Arduino SdFat Library
|
||
|
|
*
|
||
|
|
* This Library 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 Library 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 the Arduino SdFat Library. If not, see
|
||
|
|
* <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
#include "SdFatUtil.h"
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** Amount of free RAM
|
||
|
|
* \return The number of free bytes.
|
||
|
|
*/
|
||
|
|
int SdFatUtil::FreeRam() {
|
||
|
|
extern int __bss_end;
|
||
|
|
extern int* __brkval;
|
||
|
|
int free_memory;
|
||
|
|
if (reinterpret_cast<int>(__brkval) == 0) {
|
||
|
|
// if no heap use from end of bss section
|
||
|
|
free_memory = reinterpret_cast<int>(&free_memory)
|
||
|
|
- reinterpret_cast<int>(&__bss_end);
|
||
|
|
} else {
|
||
|
|
// use from top of stack to heap
|
||
|
|
free_memory = reinterpret_cast<int>(&free_memory)
|
||
|
|
- reinterpret_cast<int>(__brkval);
|
||
|
|
}
|
||
|
|
return free_memory;
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** %Print a string in flash memory.
|
||
|
|
*
|
||
|
|
* \param[in] pr Print object for output.
|
||
|
|
* \param[in] str Pointer to string stored in flash memory.
|
||
|
|
*/
|
||
|
|
void SdFatUtil::print_P(Print* pr, PGM_P str) {
|
||
|
|
for (uint8_t c; (c = pgm_read_byte(str)); str++) pr->write(c);
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** %Print a string in flash memory followed by a CR/LF.
|
||
|
|
*
|
||
|
|
* \param[in] pr Print object for output.
|
||
|
|
* \param[in] str Pointer to string stored in flash memory.
|
||
|
|
*/
|
||
|
|
void SdFatUtil::println_P(Print* pr, PGM_P str) {
|
||
|
|
print_P(pr, str);
|
||
|
|
pr->println();
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** %Print a string in flash memory to Serial.
|
||
|
|
*
|
||
|
|
* \param[in] str Pointer to string stored in flash memory.
|
||
|
|
*/
|
||
|
|
void SdFatUtil::SerialPrint_P(PGM_P str) {
|
||
|
|
print_P(&Serial, str);
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** %Print a string in flash memory to Serial followed by a CR/LF.
|
||
|
|
*
|
||
|
|
* \param[in] str Pointer to string stored in flash memory.
|
||
|
|
*/
|
||
|
|
void SdFatUtil::SerialPrintln_P(PGM_P str) {
|
||
|
|
println_P(&Serial, str);
|
||
|
|
}
|