First Commit

libraries/SdFat/examples/debug/TestRmdir/TestRmdir.ino

@@ -0,0 +1,99 @@
+/*
+ * This sketch will remove the files and directories
+ * created by the SdFatMakeDir.pde sketch.
+ *
+ * Performance is erratic due to the large number
+ * of flash erase operations caused by many random
+ * writes to file structures.
+ */
+#include <SdFat.h>
+
+const uint8_t SD_CHIP_SELECT = SS;
+
+SdFat sd;
+typedef File file_t;
+
+// store error strings in flash to save RAM
+#define error(s) sd.errorHalt(&Serial, F(s))
+
+/*
+ * remove all files in dir.
+ */
+void deleteFiles(FatFile* dir) {
+  char name[32];
+  file_t file;
+
+  // open and delete files
+  for (uint16_t n = 0; ; n++){
+     sprintf(name, "%u.TXT", n);
+
+     // open start time
+     uint32_t t0 = millis();
+
+     // assume done if open fails
+     if (!file.open(dir, name, O_WRONLY)) return;
+
+     // open end time and remove start time
+     uint32_t t1 = millis();
+     if (!file.remove()) error("file.remove failed");
+
+     // remove end time
+     uint32_t t2 = millis();
+
+     Serial.print(F("RM "));
+     Serial.print(n);
+     Serial.write(' ');
+
+     // open time
+     Serial.print(t1 - t0);
+     Serial.write(' ');
+
+     // remove time
+     Serial.println(t2 - t1);
+  }
+}
+
+void setup() {
+  file_t root;
+  Serial.begin(9600);
+  while (!Serial) {}  // wait for Leonardo
+  Serial.println(F("Type any character to start"));
+  while (Serial.read() <= 0) {}
+  delay(200);  // Catch Due reset problem
+
+  // initialize the SD card at SPI_FULL_SPEED for best performance.
+  // try lower speed if bus errors occur.
+  if (!sd.begin(SD_CHIP_SELECT, SPI_FULL_SPEED)) {
+    sd.initErrorHalt(&Serial);
+  }
+  root.openRoot(&sd);
+  // delete files in root if not FAT16.
+  if (sd.fatType() != 16) {
+    Serial.println(F("Remove files in root"));
+    deleteFiles(&root);
+  }
+
+  // open SUB1 and delete files
+  file_t sub1;
+  if (!sub1.open("SUB1", O_RDONLY)) error("open SUB1 failed");
+  Serial.println(F("Remove files in SUB1"));
+  deleteFiles(&sub1);
+
+  // open SUB2 and delete files
+  file_t sub2;
+  if (!sub2.open(&sub1, "SUB2", O_RDONLY)) error("open SUB2 failed");
+  Serial.println(F("Remove files in SUB2"));
+  deleteFiles(&sub2);
+
+  // remove SUB2
+  if (!sub2.rmdir()) error("sub2.rmdir failed");
+  Serial.println(F("SUB2 removed"));
+
+  // remove SUB1
+  if (!sub1.rmdir()) error("sub1.rmdir failed");
+  Serial.println(F("SUB1 removed"));
+
+  Serial.println(F("Done"));
+}
+
+void loop() { }