First Commit

libraries/SdFat/examples/OpenNext/OpenNext.ino

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+/*
+ * Print size, modify date/time, and name for all files in root.
+ */
+#include "SdFat.h"
+
+// SD_FAT_TYPE = 0 for SdFat/File as defined in SdFatConfig.h,
+// 1 for FAT16/FAT32, 2 for exFAT, 3 for FAT16/FAT32 and exFAT.
+#define SD_FAT_TYPE 3
+/*
+  Change the value of SD_CS_PIN if you are using SPI and
+  your hardware does not use the default value, SS.
+  Common values are:
+  Arduino Ethernet shield: pin 4
+  Sparkfun SD shield: pin 8
+  Adafruit SD shields and modules: pin 10
+*/
+
+// SDCARD_SS_PIN is defined for the built-in SD on some boards.
+#ifndef SDCARD_SS_PIN
+const uint8_t SD_CS_PIN = SS;
+#else   // SDCARD_SS_PIN
+// Assume built-in SD is used.
+const uint8_t SD_CS_PIN = SDCARD_SS_PIN;
+#endif  // SDCARD_SS_PIN
+
+// Try max SPI clock for an SD. Reduce SPI_CLOCK if errors occur.
+#define SPI_CLOCK SD_SCK_MHZ(50)
+
+// Try to select the best SD card configuration.
+#if HAS_SDIO_CLASS
+#define SD_CONFIG SdioConfig(FIFO_SDIO)
+#elif ENABLE_DEDICATED_SPI
+#define SD_CONFIG SdSpiConfig(SD_CS_PIN, DEDICATED_SPI, SPI_CLOCK)
+#else  // HAS_SDIO_CLASS
+#define SD_CONFIG SdSpiConfig(SD_CS_PIN, SHARED_SPI, SPI_CLOCK)
+#endif  // HAS_SDIO_CLASS
+
+#if SD_FAT_TYPE == 0
+SdFat sd;
+File dir;
+File file;
+#elif SD_FAT_TYPE == 1
+SdFat32 sd;
+File32 dir;
+File32 file;
+#elif SD_FAT_TYPE == 2
+SdExFat sd;
+ExFile dir;
+ExFile file;
+#elif SD_FAT_TYPE == 3
+SdFs sd;
+FsFile dir;
+FsFile file;
+#else  // SD_FAT_TYPE
+#error invalid SD_FAT_TYPE
+#endif  // SD_FAT_TYPE
+//------------------------------------------------------------------------------
+// Store error strings in flash to save RAM.
+#define error(s) sd.errorHalt(&Serial, F(s))
+//------------------------------------------------------------------------------
+void setup() {
+  Serial.begin(9600);
+
+  // Wait for USB Serial
+  while (!Serial) {
+    yield();
+  }
+
+  Serial.println("Type any character to start");
+  while (!Serial.available()) {
+    yield();
+  }
+
+  // Initialize the SD.
+  if (!sd.begin(SD_CONFIG)) {
+    sd.initErrorHalt(&Serial);
+  }
+  // Open root directory
+  if (!dir.open("/")) {
+    error("dir.open failed");
+  }
+  // Open next file in root.
+  // Warning, openNext starts at the current position of dir so a
+  // rewind may be necessary in your application.
+  while (file.openNext(&dir, O_RDONLY)) {
+    file.printFileSize(&Serial);
+    Serial.write(' ');
+    file.printModifyDateTime(&Serial);
+    Serial.write(' ');
+    file.printName(&Serial);
+    if (file.isDir()) {
+      // Indicate a directory.
+      Serial.write('/');
+    }
+    Serial.println();
+    file.close();
+  }
+  if (dir.getError()) {
+    Serial.println("openNext failed");
+  } else {
+    Serial.println("Done!");
+  }
+}
+//------------------------------------------------------------------------------
+void loop() {}