|
1 |
| -/* Arduino SdFat Library |
2 |
| - * Copyright (C) 2008 by William Greiman |
3 |
| - * |
4 |
| - * This file is part of the Arduino SdFat Library |
5 |
| - * |
6 |
| - * This Library is free software: you can redistribute it and/or modify |
7 |
| - * it under the terms of the GNU General Public License as published by |
8 |
| - * the Free Software Foundation, either version 3 of the License, or |
9 |
| - * (at your option) any later version. |
10 |
| - * |
11 |
| - * This Library is distributed in the hope that it will be useful, |
12 |
| - * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
| - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 |
| - * GNU General Public License for more details. |
15 |
| -
|
16 |
| - * You should have received a copy of the GNU General Public License |
17 |
| - * along with the Arduino SdFat Library. If not, see |
18 |
| - * <http://www.gnu.org/licenses/>. |
19 |
| - */ |
20 |
| -#ifndef SdFatUtil_h |
21 |
| -#define SdFatUtil_h |
22 |
| -/** |
23 |
| - * \file |
24 |
| - * Useful utility functions. |
25 |
| - */ |
26 |
| -#include <Arduino.h> |
27 |
| -#ifdef __AVR__ |
28 |
| -#include <avr/pgmspace.h> |
29 |
| - |
30 |
| -/** Store and print a string in flash memory.*/ |
31 |
| -#define PgmPrint(x) SerialPrint_P(PSTR(x)) |
32 |
| -/** Store and print a string in flash memory followed by a CR/LF.*/ |
33 |
| -#define PgmPrintln(x) SerialPrintln_P(PSTR(x)) |
34 |
| -/** Defined so doxygen works for function definitions. */ |
35 |
| -#endif |
36 |
| -#define NOINLINE __attribute__((noinline,unused)) |
37 |
| -#define UNUSEDOK __attribute__((unused)) |
38 |
| -//------------------------------------------------------------------------------ |
39 |
| -/** Return the number of bytes currently free in RAM. */ |
40 |
| -static UNUSEDOK int FreeRam(void) { |
41 |
| - extern int __bss_end; |
42 |
| - extern int* __brkval; |
43 |
| - int free_memory; |
44 |
| - if (reinterpret_cast<int>(__brkval) == 0) { |
45 |
| - // if no heap use from end of bss section |
46 |
| - free_memory = reinterpret_cast<int>(&free_memory) |
47 |
| - - reinterpret_cast<int>(&__bss_end); |
48 |
| - } else { |
49 |
| - // use from top of stack to heap |
50 |
| - free_memory = reinterpret_cast<int>(&free_memory) |
51 |
| - - reinterpret_cast<int>(__brkval); |
52 |
| - } |
53 |
| - return free_memory; |
54 |
| -} |
55 |
| -#ifdef __AVR__ |
56 |
| -//------------------------------------------------------------------------------ |
57 |
| -/** |
58 |
| - * %Print a string in flash memory to the serial port. |
59 |
| - * |
60 |
| - * \param[in] str Pointer to string stored in flash memory. |
61 |
| - */ |
62 |
| -static NOINLINE void SerialPrint_P(PGM_P str) { |
63 |
| - for (uint8_t c; (c = pgm_read_byte(str)); str++) Serial.write(c); |
64 |
| -} |
65 |
| -//------------------------------------------------------------------------------ |
66 |
| -/** |
67 |
| - * %Print a string in flash memory followed by a CR/LF. |
68 |
| - * |
69 |
| - * \param[in] str Pointer to string stored in flash memory. |
70 |
| - */ |
71 |
| -static NOINLINE void SerialPrintln_P(PGM_P str) { |
72 |
| - SerialPrint_P(str); |
73 |
| - Serial.println(); |
74 |
| -} |
75 |
| -#endif // __AVR__ |
76 |
| -#endif // #define SdFatUtil_h |
| 1 | +/* Arduino SdFat Library |
| 2 | + * Copyright (C) 2008 by William Greiman |
| 3 | + * |
| 4 | + * This file is part of the Arduino SdFat Library |
| 5 | + * |
| 6 | + * This Library is free software: you can redistribute it and/or modify |
| 7 | + * it under the terms of the GNU General Public License as published by |
| 8 | + * the Free Software Foundation, either version 3 of the License, or |
| 9 | + * (at your option) any later version. |
| 10 | + * |
| 11 | + * This Library is distributed in the hope that it will be useful, |
| 12 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | + * GNU General Public License for more details. |
| 15 | +
|
| 16 | + * You should have received a copy of the GNU General Public License |
| 17 | + * along with the Arduino SdFat Library. If not, see |
| 18 | + * <http://www.gnu.org/licenses/>. |
| 19 | + */ |
| 20 | +#ifndef SdFatUtil_h |
| 21 | +#define SdFatUtil_h |
| 22 | +/** |
| 23 | + * \file |
| 24 | + * Useful utility functions. |
| 25 | + */ |
| 26 | +#include <Arduino.h> |
| 27 | +#ifdef __AVR__ |
| 28 | +#include <avr/pgmspace.h> |
| 29 | + |
| 30 | +/** Store and print a string in flash memory.*/ |
| 31 | +#define PgmPrint(x) SerialPrint_P(PSTR(x)) |
| 32 | +/** Store and print a string in flash memory followed by a CR/LF.*/ |
| 33 | +#define PgmPrintln(x) SerialPrintln_P(PSTR(x)) |
| 34 | +/** Defined so doxygen works for function definitions. */ |
| 35 | +#endif |
| 36 | +#define NOINLINE __attribute__((noinline,unused)) |
| 37 | +#define UNUSEDOK __attribute__((unused)) |
| 38 | +//------------------------------------------------------------------------------ |
| 39 | +/** Return the number of bytes currently free in RAM. */ |
| 40 | +static UNUSEDOK int FreeRam(void) { |
| 41 | + extern int __bss_end; |
| 42 | + extern int* __brkval; |
| 43 | + int free_memory; |
| 44 | + if (reinterpret_cast<int>(__brkval) == 0) { |
| 45 | + // if no heap use from end of bss section |
| 46 | + free_memory = reinterpret_cast<int>(&free_memory) |
| 47 | + - reinterpret_cast<int>(&__bss_end); |
| 48 | + } else { |
| 49 | + // use from top of stack to heap |
| 50 | + free_memory = reinterpret_cast<int>(&free_memory) |
| 51 | + - reinterpret_cast<int>(__brkval); |
| 52 | + } |
| 53 | + return free_memory; |
| 54 | +} |
| 55 | +#ifdef __AVR__ |
| 56 | +//------------------------------------------------------------------------------ |
| 57 | +/** |
| 58 | + * %Print a string in flash memory to the serial port. |
| 59 | + * |
| 60 | + * \param[in] str Pointer to string stored in flash memory. |
| 61 | + */ |
| 62 | +static NOINLINE void SerialPrint_P(PGM_P str) { |
| 63 | + for (uint8_t c; (c = pgm_read_byte(str)); str++) Serial.write(c); |
| 64 | +} |
| 65 | +//------------------------------------------------------------------------------ |
| 66 | +/** |
| 67 | + * %Print a string in flash memory followed by a CR/LF. |
| 68 | + * |
| 69 | + * \param[in] str Pointer to string stored in flash memory. |
| 70 | + */ |
| 71 | +static NOINLINE void SerialPrintln_P(PGM_P str) { |
| 72 | + SerialPrint_P(str); |
| 73 | + Serial.println(); |
| 74 | +} |
| 75 | +#endif // __AVR__ |
| 76 | +#endif // #define SdFatUtil_h |
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