You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
2.4 KiB
71 lines
2.4 KiB
14 years ago
|
/* 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/>.
|
||
|
|
*/
|
||
|
|
#ifndef SdFatUtil_h
|
||
|
|
#define SdFatUtil_h
|
||
|
|
/**
|
||
|
|
* \file
|
||
|
|
* Useful utility functions.
|
||
|
|
*/
|
||
|
|
#include <WProgram.h>
|
||
|
|
#include <avr/pgmspace.h>
|
||
|
|
/** Store and print a string in flash memory.*/
|
||
|
|
#define PgmPrint(x) SerialPrint_P(PSTR(x))
|
||
|
|
/** Store and print a string in flash memory followed by a CR/LF.*/
|
||
|
|
#define PgmPrintln(x) SerialPrintln_P(PSTR(x))
|
||
|
|
/** Defined so doxygen works for function definitions. */
|
||
|
|
#define NOINLINE __attribute__((noinline))
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** Return the number of bytes currently free in RAM. */
|
||
|
|
static int FreeRam(void) {
|
||
|
|
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 to the serial port.
|
||
|
|
*
|
||
|
|
* \param[in] str Pointer to string stored in flash memory.
|
||
|
|
*/
|
||
|
|
static NOINLINE void SerialPrint_P(PGM_P str) {
|
||
|
|
for (uint8_t c; (c = pgm_read_byte(str)); str++) Serial.print(c);
|
||
|
|
}
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/**
|
||
|
|
* %Print a string in flash memory followed by a CR/LF.
|
||
|
|
*
|
||
|
|
* \param[in] str Pointer to string stored in flash memory.
|
||
|
|
*/
|
||
|
|
static NOINLINE void SerialPrintln_P(PGM_P str) {
|
||
|
|
SerialPrint_P(str);
|
||
|
|
Serial.println();
|
||
|
|
}
|
||
|
|
#endif // #define SdFatUtil_h
|