daily_automated

trunk/Arduino/hardware/custom/avr/zzz.libraries.old/SdFat/SdFatUtil.cpp

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+/* Arduino SdFat Library
+ * Copyright (C) 2012 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 <stdlib.h>
+#include <SdFat.h>
+#include <SdFatUtil.h>
+#ifdef __arm__
+// should use uinstd.h to define sbrk but Due causes a conflict
+extern "C" char* sbrk(int incr);
+#else  // __ARM__
+extern char *__brkval;
+extern char __bss_end;
+#endif  // __arm__
+//------------------------------------------------------------------------------
+/** Amount of free RAM
+ * \return The number of free bytes.
+ */
+int SdFatUtil::FreeRam() {
+  char top;
+#ifdef __arm__
+  return &top - reinterpret_cast<char*>(sbrk(0));
+#else  // __arm__
+  return __brkval ? &top - __brkval : &top - &__bss_end;
+#endif  // __arm__
+}
+//------------------------------------------------------------------------------
+/** %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(SdFat::stdOut(), 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(SdFat::stdOut(), str);
+}