| /* Arduino FAT16 Library | |
| * Copyright (C) 2008 by William Greiman | |
| * | |
| * This file is part of the Arduino FAT16 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 Fat16 Library. If not, see | |
| * <http://www.gnu.org/licenses/>. | |
| */ | |
| /** | |
| * \file | |
| * Useful utility functions. | |
| */ | |
| /** Store and print a string in flash memory.*/ | |
| /** Store and print a string in flash memory followed by a CR/LF.*/ | |
| /** Defined so doxygen works for function definitions. */ | |
| //------------------------------------------------------------------------------ | |
| /** 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.write(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(); | |
| } | |