diff options
| author | Thibaut VIARD <thibaut.viard@atmel.com> | 2011-06-21 00:20:43 +0200 |
|---|---|---|
| committer | Thibaut VIARD <thibaut.viard@atmel.com> | 2011-06-21 00:20:43 +0200 |
| commit | 0887b98f627500271b5ad8b3c4f6c7b90bc227ee (patch) | |
| tree | ef8626954567ba22e392c68c8f3606416b07b5b5 /libraries/SD/utility/SdFatUtil.h | |
| parent | 90c487402cefadb6a2aab907ab07075cbb759e34 (diff) | |
Moving all AVR specific libraries to hardware/avr
Diffstat (limited to 'libraries/SD/utility/SdFatUtil.h')
| -rw-r--r-- | libraries/SD/utility/SdFatUtil.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/libraries/SD/utility/SdFatUtil.h b/libraries/SD/utility/SdFatUtil.h new file mode 100644 index 0000000..c626bfe --- /dev/null +++ b/libraries/SD/utility/SdFatUtil.h @@ -0,0 +1,70 @@ +/* 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 <Arduino.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
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